阅读说明：本技术 油基钻屑热解析处理撬装式设备 (Skid-mounted equipment for thermal desorption treatment of oil-based drilling cuttings ) 是由 刘胜涛 江浩 周胜 王建星 漆小虎 刘军 张尚斌 崔永刚 杨静豪 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种油基钻屑热解析处理撬装式设备,包括热解炉、进料装置、出料装置、除尘装置、冷凝分离器装置以及导热油加热锅炉装置,热解炉的每个油加热盘和电加热盘的周向外壁均设置有正向推进组件和反向推进组件,正向推进组件的总数量大于反向推进组件的总数量。通过在每个油加热盘和电加热盘的周向外壁设置正向推进组件和反向推进组件,正向推进组件能够推动油基钻屑从低温区朝着高温区移动,而反向推进组件能够推动油基钻屑朝着低温区移动,正向推进组件和反向推进组件反复推动油基钻屑移动,能够使油基钻屑翻滚,起到搅拌的作用,从而提高水分和油的蒸发气化效率。(The invention discloses skid-mounted equipment for thermal desorption treatment of oil-based drilling cuttings, which comprises a pyrolysis furnace, a feeding device, a discharging device, a dust removal device, a condensation separator device and a heat-conducting oil heating boiler device, wherein a forward propulsion assembly and a reverse propulsion assembly are arranged on the circumferential outer wall of each oil heating plate and each electric heating plate of the pyrolysis furnace, and the total number of the forward propulsion assemblies is greater than that of the reverse propulsion assemblies. Through setting up forward propulsion subassembly and reverse propulsion subassembly at the circumference outer wall of every oil heating plate and electric heating plate, forward propulsion subassembly can promote oil base drill chip and remove towards the high temperature region from the low temperature zone, and reverse propulsion subassembly can promote oil base drill chip and remove towards the low temperature zone, and forward propulsion subassembly and reverse propulsion subassembly promote oil base drill chip repeatedly and remove, can make oil base drill chip roll, play the effect of stirring to improve the evaporation gasification efficiency of moisture and oil.)

1. The skid-mounted equipment for thermal desorption treatment of the oil-based drill cuttings comprises a pyrolysis furnace (4), a feeding device (5), a discharging device (3), a dust removal device (2), a condensation separator device (1) and a heat conduction oil heating boiler device (6), wherein the pyrolysis furnace (4) comprises a furnace body (410), an oil heating shaft (420), an electric heating shaft (430) and a driving device (450), the feeding device (5) is connected with an oil-based drill cuttings inlet of the furnace body (410), the discharging device (3) is connected with an oil-based drill cuttings discharge port of the furnace body (410), the dust removal device (2) is connected with an exhaust port of the furnace body (410), and the condensation separator device (1) is connected with the dust removal device (2); the oil heating shaft (420) is a hollow shaft, one end of the oil heating shaft is a closed end and is fixedly connected with the electric heating shaft (430), and an oil supply mechanism is arranged in the oil heating shaft (420); the outer wall of the oil heating shaft (420) is provided with a plurality of oil heating plates (421), the inner cavities of the oil heating plates (421) are communicated with the inner holes of the oil heating shaft (420), an oil baffle ring plate (422) is arranged in the inner cavity of each oil heating plate (421), and the inner holes of the oil baffle ring plates (422) are fixedly connected with the core pipe (440); a plurality of electric heating plates (431) are arranged on the outer wall of the electric heating shaft (430), and an electric heating element (432) is arranged in each electric heating plate (431); the oil heating shaft (420) or the electric heating shaft (430) is connected with a driving device (450); the oil heating plate is characterized in that the circumferential outer wall of each oil heating plate (421) and the circumferential outer wall of each electric heating plate (431) are provided with a forward propulsion assembly (460) and a reverse propulsion assembly (470), and the total number of the forward propulsion assemblies (460) is larger than that of the reverse propulsion assemblies (470).

2. The skid-mounted equipment for thermal resolution treatment of oil-based drill cuttings according to claim 1, wherein the discharging device (3) comprises a vertical slag discharge pipe (300), the upper end of the slag discharge pipe (300) is sealed by a sealing piece (301), the lower end of the slag discharge pipe is connected with a tubular screw conveyor (302), the side wall of the slag discharge pipe (300) below the sealing piece (301) is provided with a slag inlet (303), the slag inlet (303) is connected with the oil-based drill cuttings discharge port of the furnace body (410), a stirring shaft (304) is arranged in the slag discharge pipe (300), a stirring sheet (305) is arranged on the stirring shaft (304), and the upper end of the stirring shaft (304) penetrates through the sealing piece (301) and is connected with a power mechanism (306).

3. The skid-mounted device for thermal resolution processing of oil-based drill cuttings according to claim 2, wherein an upper level sensor (307) and a lower level sensor (308) are arranged in the slag discharge pipe (300) below the slag inlet (303).

4. The skid-mounted device for thermal desorption treatment of oil-based drill cuttings according to claim 1, wherein the dust removal device (2) comprises a horizontal pipe body (200), one end of the pipe body (200) is an open air inlet end (201), the other end of the pipe body is a closed air outlet end, the air outlet end is provided with an air outlet (202), the air inlet end (201) is connected with an air outlet of a furnace body (410), the air outlet (202) is connected with the condensation separator device (1), a rotating shaft (203) is arranged inside the pipe body (200), a spiral dust guard plate (204) is arranged on the rotating shaft (203), a spiral air flow channel is formed among the rotating shaft (203), the dust guard plate (204) and the pipe body (200), and one end of the rotating shaft (203) is connected with a driving mechanism (205).

5. The skid-mounted equipment for the thermal resolution treatment of the oil-based cuttings according to claim 1, wherein the condensation separator device comprises a shell (100) with an inner cavity, the inner cavity of the shell (100) is divided into a condensation cavity (102) and a separation cavity by a guide plate (101), the top of the condensation cavity (102) is provided with a feed inlet (103) and a plurality of condensation nozzles (104), the separation cavity is divided into a plurality of separation chambers arranged in sequence by a vertical partition plate (105), an overflow channel for communicating two adjacent separation chambers is arranged between the top of the partition plate (105) and the guide plate (101), an inlet channel (106) is arranged on the guide plate (101) above the separation chamber at one end, an oil recovery chamber (107) is connected to the top of the separation chamber at the other end, a water recovery chamber (108) is connected to the bottom of the separation chamber (105), and an oil discharge channel (109) is connected to the oil recovery chamber (107), the water recovery chamber (108) is connected to a drain passage (110).

6. The skid-mounted equipment for the thermal desorption treatment of the oil-based cuttings according to claim 5, wherein the oil discharge channel (109) is connected with an oil recovery tank (130), and the oil recovery tank (130) is connected with a combustion chamber of the conduction oil heating boiler device (6) through a pipeline.

7. the skid-mounted equipment for the thermal desorption treatment of the oil-based drill cuttings according to claim 5, wherein the top of the separation chamber is provided with a noncondensable gas discharge channel (116), the noncondensable gas discharge channel (116) is connected with a noncondensable gas tank (131), and the noncondensable gas tank (131) is connected with a combustion chamber of the heat-conducting oil heating boiler device (6) through a pipeline.

8. the skid-mounted equipment for the thermal resolution treatment of the oil-based drill cuttings according to claim 1, further comprising a rectangular base (7), wherein enclosing plates (71) are hinged to the side edges of the base (7), a horizontal top plate (73) is connected to the edges of the upper surface of the base (7) through a plurality of vertical connecting columns (72), the upper ends of the enclosing plates (71) are detachably connected with the top plate (73), the enclosing plates (71) and the base (7) enclose an installation cavity, and the pyrolysis furnace (4), the feeding device (5), the discharging device (3), the dust removing device (2), the condensation separator device (1) and the heat conduction oil heating boiler device (6) are installed in the installation cavity.

9. The skid-mounted equipment for the thermal desorption treatment of the oil-based cuttings according to claim 1, wherein a fixing rod (411) is arranged at the top of the inner cavity of the furnace body (410), a plurality of mud scrapers (412) are arranged on the fixing rod (411), and each mud scraper (412) is positioned between two adjacent electric heating plates (431) or two adjacent oil heating plates (421).

10. The skid-mounted equipment for thermal desorption treatment of oil-based cuttings according to claim 1, wherein each of the forward propulsion assembly (460) and the reverse propulsion assembly (470) comprises a baffle plate (471) and a push plate (472), one end of the baffle plate (471) is connected with the push plate (472), the baffle plate (471) is perpendicular to the axial direction of the oil heating shaft (420), and the push plate (472) forms an acute angle or an obtuse angle with the axial direction of the oil heating shaft (420).

Technical Field

The invention relates to the field of oil-based drilling cutting treatment equipment, in particular to skid-mounted equipment for thermal desorption treatment of oil-based drilling cuttings.

Background

the oil-based drilling cuttings are slurry pollutants generated in the process of exploiting a deep oil well and a shale oil-gas well, contain pollutants such as petroleum hydrocarbons, heavy metals and organic matters, and cause pollution and resource waste to soil, atmosphere and underground water if the oil-based drilling cuttings are not effectively treated in time. According to incomplete statistics, oil-based drilling cuttings generated in various oil fields in China reach up to millions of tons every year, the oil content of the oil-based drilling cuttings is 10% -30%, the water content is 20% -50%, about more than one hundred thousand tons of oil are deposited in the oil-based drilling cuttings every year according to the average oil content of 20%, a large amount of waste of oil resources is caused, the ecological environment is seriously damaged, and waste drilling fluid and oily sludge are listed as national dangerous wastes. With the increasing demand of China on petroleum and natural gas resources, a large amount of oil-based drill cuttings become a heavy burden of oil and gas fields.

At present, oil-based drilling cuttings are mainly treated by incineration, landfill, solidification, solvent extraction, bioremediation, centrifugal separation or thermal desorption and the like, wherein the incineration, landfill, solidification and the like cannot be harmlessly treated, and the solvent extraction, bioremediation and other modes have higher treatment cost and low efficiency and are not suitable for economic large-scale treatment; the centrifugal separation technology is only suitable for primary treatment of the oil-based drilling cuttings, and the oil content of the treated waste residues is still more than 2%, so that the national environmental protection requirement cannot be met. In order to meet the national environmental protection requirement, the thermal desorption technology becomes a leading novel technology, and the oil content of the waste residue after thermal decomposition can reach below 1%.

Regarding the thermal desorption technology, at present, microwave heating, hot flue gas heating, indirect furnace body heating, direct furnace body heating and other thermal desorption technologies exist, and both patent CN201310645168.3, a manufacturing method of recovery equipment for mud and diesel oil base in waste oil-based mud, and patent CN201720631428.5, a resource recovery system for oil-containing drilling cutting base oil, disclose that oil-based mud is recovered by using a centrifugal filtration-centrifugal sedimentation coupling process, and the separated low oil-containing solid phase realizes the recovery of diesel oil base through leaching-evaporation equipment; patent CN201710056323.6 "a sludge pyrolysis desorption device" discloses a sludge pyrolysis treatment by adopting a high-temperature hot flue gas heating mode; in patent CN201810070920.9 & lt & ltoil-based drilling cuttings continuous microwave pyrolysis equipment and process & gt and patent CN201410309267.9 & lt & gt & lt & gt, an oil-containing drilling cuttings device and method for microwave thermal desorption & gt are used for pyrolyzing oil-based drilling cuttings in a microwave heating mode; the patent CN201410805630.6 'Indirect heating thermal desorption treatment device and method for oil-containing solid waste' adopts a mode of directly heating a furnace body. Although the oil content of the waste residue of the oil-based drilling cuttings after pyrolysis in the above way can reach below 1%, the equipment is complex, the investment is large, the operation cost is high, and for many years, a set of method and a device which are technically and economically feasible for treating the oil-based drilling cuttings are not available in China. Patent publication No. CN108625821A "oil-based drilling cutting processing method" proposes processing oil-based drilling cutting in a mode of indirect heating of heat conduction oil and electricity, so that the oil content of waste residue after pyrolysis of the oil-based drilling cutting is below 0.3%, the thermal desorption equipment adopted by the method comprises a pyrolysis furnace, a feeding device, a discharging device, a dust removing device, a condensation separating device and a heat-conducting oil heating boiler device, wherein, the pyrolysis furnace is one of important components, the core component of the pyrolysis furnace in the prior art is a rotor device, which comprises a heating plate, a blocking plate, a heat-conducting oil outlet, a heat-conducting oil inlet, a furnace body, a feed inlet, a discharge outlet, a gas outlet, a second rotating shaft, an inner pipe, a partition plate, an electric heating element, a driving device and the like, in the practical use process, the oil-based drilling cuttings have certain adhesiveness and are easy to adhere to the inner wall of the furnace body, and the oil-based drilling cuttings are not stirred sufficiently, so that the evaporation and gasification efficiency of water and oil in the oil-based drilling cuttings is not high enough.

Disclosure of Invention

The invention aims to provide skid-mounted equipment for thermal desorption treatment of oil-based drilling cuttings, which can fully stir the oil-based drilling cuttings in the pyrolysis process and improve the evaporation efficiency of oil and water.

The technical scheme adopted by the invention for solving the technical problem is as follows: the thermal desorption treatment skid-mounted equipment for the oil-based drilling cuttings comprises a pyrolysis furnace, a feeding device, a discharging device, a dust removal device, a condensation separator device and a heat-conducting oil heating boiler device, wherein the pyrolysis furnace comprises a furnace body, an oil heating shaft, an electric heating shaft, a core pipe and a driving device; the oil heating shaft is a hollow shaft, one end of the oil heating shaft is a closed end and is fixedly connected with the electric heating shaft, and an oil supply mechanism is arranged in the oil heating shaft; the outer wall of the oil heating shaft is provided with a plurality of oil heating plates, the inner cavities of the oil heating plates are communicated with the inner hole of the oil heating shaft, an oil blocking ring plate is arranged in the inner cavity of each oil heating plate, and the inner hole of each oil blocking ring plate is fixedly connected with the core pipe; the outer wall of the electric heating shaft is provided with a plurality of electric heating plates, and each electric heating plate is internally provided with an electric heating piece; the oil heating shaft or the electric heating shaft is connected with a driving device; the circumferential outer walls of each oil heating plate and each electric heating plate are provided with a forward propulsion assembly and a reverse propulsion assembly, and the total number of the forward propulsion assemblies is larger than that of the reverse propulsion assemblies.

Further, discharging device includes vertical row's sediment pipe, arrange the upper end of sediment pipe and seal through the sealing, the lower extreme is connected with tubular screw conveyer, and the row's sediment pipe lateral wall of sealing below is provided with into the cinder notch, it links to each other with the oil base drill chip row mouth of furnace body to advance the cinder notch, be provided with the (mixing) shaft in the row's sediment intraductal, be provided with the stirring piece on the (mixing) shaft, the upper end of (mixing) shaft runs through the sealing and is connected with driving mechanism.

Furthermore, an upper material level sensor and a lower material level sensor are arranged in the slag discharging pipe below the slag inlet.

further, dust collector includes the horizontally body, the one end of body is open inlet end, and the other end is the confined end of giving vent to anger, the end of giving vent to anger is provided with the gas outlet, the inlet end links to each other with the gas vent of furnace body, and the gas outlet links to each other with the condensation separator device, the inside of body is provided with the pivot, be provided with spiral baffle in the pivot, form spiral air flow channel between pivot, baffle and the body, the one end of pivot is connected with actuating mechanism.

Further, condensation separator device is including the casing that has the inner chamber, the inner chamber of casing is separated by the guide plate and becomes condensation chamber and disengagement chamber, the top in condensation chamber is provided with feed inlet and a plurality of condensation shower nozzle, the disengagement chamber is separated by vertical baffle and becomes a plurality of separating chambers of arranging in proper order, the overflow passageway that has two adjacent separating chambers of intercommunication between the top of baffle and the guide plate is provided with the inlet channel on the guide plate that is located the separating chamber top of one end, and the top that is located the separating chamber of the other end is connected with the oil recovery room, and the bottom is connected with the water recovery room, the oil recovery room is connected with oil extraction passageway, and the water recovery room is connected with drainage channel.

Further, the oil discharge channel is connected with an oil recovery tank, and the oil recovery tank is connected with a combustion cavity of the heat conduction oil heating boiler device through a pipeline.

Furthermore, the top of the separation cavity is provided with a noncondensable gas discharge channel, the noncondensable gas discharge channel is connected with a noncondensable gas tank, and the noncondensable gas tank is connected with a combustion cavity of the heat-conducting oil heating boiler device through a pipeline.

Further, still include the base of rectangle, the side of base articulates there is the bounding wall, and the edge of base upper surface is connected with the horizontally roof through many vertical spliced poles, the upper end and the roof of bounding wall can be dismantled and be connected, and roof, bounding wall and base enclose into the installation cavity, pyrolysis oven, feed arrangement, discharging device, dust collector, condensation separator device and conduction oil heating boiler device all install in the installation cavity.

Furthermore, a fixing rod is arranged at the top of the inner cavity of the furnace body, a plurality of mud scraping plates are arranged on the fixing rod, and each mud scraping plate is located between two adjacent electric heating plates or two adjacent oil heating plates.

Further, every forward propulsion subassembly and reverse propulsion subassembly all include a baffle and a push pedal, the one end and the push pedal of baffle link to each other, and the baffle perpendicular to oil heating shaft's axial, and the push pedal is acute angle or obtuse angle with the axial of heating shaft.

Compared with the prior art, the invention has the beneficial effects that: through setting up forward propulsion subassembly and reverse propulsion subassembly at the circumference outer wall of every oil heating plate and electric heating plate, forward propulsion subassembly can promote oil base drill chip and remove towards the high temperature region from the low temperature zone, and reverse propulsion subassembly can promote oil base drill chip and remove towards the low temperature zone, and forward propulsion subassembly and reverse propulsion subassembly promote oil base drill chip repeatedly and remove, can make oil base drill chip roll, play the effect of stirring to improve the evaporation gasification efficiency of moisture and oil. In addition, the number of the forward propulsion assemblies is larger than that of the reverse propulsion assemblies, so that the oil-based drilling cuttings in the furnace body can be pushed to move slowly towards the high-temperature area integrally, and the conveying function can be achieved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic cross-sectional view of a pyrolysis furnace;

FIG. 3 is a schematic perspective view of the pyrolysis furnace with the furnace body removed;

FIG. 4 is a schematic view of a discharge device;

FIG. 5 is a front perspective view of a condensate separator apparatus;

FIG. 6 is a rear perspective view of the condensate separator apparatus;

FIG. 7 is a schematic internal view of a condensate separator apparatus;

FIG. 8 is a schematic perspective view of a dust removing apparatus;

FIG. 9 is a schematic cross-sectional view of a dust extraction apparatus;

FIG. 10 is a schematic view of the present invention mounted on a base;

FIG. 11 is a schematic view of the skid of the present invention;

Reference numerals: 1-a condensation separator unit; 100-a housing; 101-a deflector; 102-a condensation chamber; 103-a feed inlet; 104-condensation nozzle; 105-a separator; 106-liquid inlet channel; 107-oil recovery chamber; 108-a water recovery chamber; 109-oil drain channel; 110-a drainage channel; 111-cooling the dilution chamber; 112-preliminary stratification chamber; 113-secondary layering chamber; 114-upper water level switch; 115-lower water level switch; 116 — noncondensable gas discharge channel; 117 — a sewage drain; 118 — a pressure transmitter; 119-a temperature sensor; 120-a heat exchanger; 121-window cover; 122-safety valve pot connecting pipe; 123-safety valve tank, 130-oil recovery tank; 131-noncondensable tank; 132-water recovery tank; 2-a dust removal device; 200-a pipe body; 201-air inlet end; 202-air outlet; 203-a rotating shaft; 204-dust board; 205 — a drive mechanism; 206-external heating tube; 207-insulating layer; 208-end cap; 209-a third bearing block; 210-internal heating pipe; 211 — a first thermocouple; 212-an expansion joint; 213-air intake flange; 214-an outlet flange; 3, a discharging device; 300-a slag discharge pipe; 301-closure; 3011-cylinder; 3012-end plate; 3013 — a second heating tube; 302-tubular screw conveyor; 303-a slag inlet; 304-stirring shaft; 305-stirring sheet; 306-a power mechanism; 307 — upper level sensor; 308-lower level sensor; 309-a first heating pipe; 310 — a second thermocouple; 311, a heat preservation cover; 312 — a second bearing block; 4-a pyrolysis furnace; 410-furnace body; 411-fixing the rod; 412-mud scraper; 420-oil heating shaft; 421-oil heating disc; 422-oil baffle ring plate; 423-scraper; 424 — first scraping mechanism; 425-a shaft head; 426 — a rotary joint; 430 — an electrically heated shaft; 431-electric heating plates; 432-electric heating elements; 433, a second scraping mechanism; 434 — third thermocouple; 435-connecting disc; 440-core tube; 441-an oil inlet; 442-oil outlet; 450-a drive; 460 — a forward propulsion assembly; 470-reverse propulsion assembly; 471-baffle; 472 — push plate; 5-a feeding device; 6-heating the boiler device by heat-conducting oil; 7-a base; 71-enclosing plate; 72-connecting column; 73 — top plate.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

The skid-mounted equipment for thermal desorption treatment of the oil-based drill cuttings comprises a pyrolysis furnace 4, a feeding device 5, a discharging device 3, a dust removal device 2, a condensation separator device 1 and a heat-conducting oil heating boiler device 6, wherein the pyrolysis furnace 4 comprises a furnace body 410, an oil heating shaft 420, an electric heating shaft 430 and a driving device 450, the feeding device 5 is connected with an oil-based drill cuttings inlet of the furnace body 410, the discharging device 3 is connected with an oil-based drill cuttings discharge port of the furnace body 410, the dust removal device 2 is connected with an exhaust port of the furnace body 410, and the condensation separator device 1 is connected with the dust removal device 2; the oil heating shaft 420 is a hollow shaft, one end of the oil heating shaft is a closed end and is fixedly connected with the electric heating shaft 430, the other end of the oil heating shaft is an open end, an oil supply mechanism is arranged in the oil heating shaft 420, the oil supply mechanism comprises a core pipe, the core pipe 440 is positioned in the oil heating shaft 420, one end of the core pipe 440 is positioned at the closed end of the oil heating shaft 420, the other end of the core pipe is provided with an oil inlet 441, an oil outlet 442 is arranged between the other end of the core pipe and the open end of the oil heating shaft 420, and the oil outlet 442 and the oil inlet 441 are; the outer wall of the oil heating shaft 420 is provided with a plurality of oil heating coils 421, the inner cavities of the oil heating coils 421 are communicated with the inner holes of the oil heating shaft 420, an oil baffle ring plate 422 is arranged in each inner cavity of each oil heating coil 421, and the inner holes of the oil baffle ring plates 422 are fixedly connected with the core pipe 440; a plurality of electric heating plates 431 are arranged on the outer wall of the electric heating shaft 430, and an electric heating piece 432 is arranged in each electric heating plate 431; the oil heating shaft 420 or the electric heating shaft 430 is connected with a driving device 450; the circumferential outer walls of each oil heating pan 421 and electric heating pan 431 are provided with forward propulsion assemblies 460 and reverse propulsion assemblies 470, the total number of forward propulsion assemblies 460 being greater than the total number of reverse propulsion assemblies 470.

The feeding device 5 is used for conveying the oil-based drilling cutting raw materials into the pyrolysis furnace 4 and can be composed of a vibrating screen, a multi-stage screw conveyor or a mortar conveying pump, and measures must be taken to prevent air from entering the pyrolysis furnace 4 through the feeding device 5 in the material conveying process. The pyrolysis furnace 4 is used for heating the oil-based drilling cuttings to evaporate oil and water into steam, and the dust removal device 2 is used for condensing and liquefying the oil and the steam and then performing oil-water separation, so that the oil and the water are recovered. The discharging device 3 is used for discharging the oil-based drilling cuttings after oil and water are separated, the heat conduction oil heating boiler device 6 adopts an existing conventional fuel boiler and is used for heating the medium oil to the temperature required by the process and conveying the medium oil into the pyrolysis furnace 4, and the high-temperature medium oil, namely hot oil, is used for exchanging heat with the oil-based drilling cuttings to promote evaporation of the oil and the water in the oil-based drilling cuttings.

The furnace body 410 comprises a cylinder and two end plates, the cylinder and the two end plates enclose a cylindrical cavity, one end of the cavity is a low-temperature area, the other end of the cavity is a high-temperature area, and the temperature in the cavity is gradually increased from the low-temperature area to the high-temperature area. An oil-based drilling cutting inlet used for introducing oil-based drilling cutting is formed in the furnace body 410 of the low-temperature area, an oil-based drilling cutting discharge port used for discharging the oil-based drilling cutting and an exhaust port used for discharging oil and water vapor are formed in the furnace body 410 of the high-temperature area, the oil-based drilling cutting enters the low-temperature area and moves towards the high-temperature area, the temperature is continuously increased, and the water and the oil are continuously evaporated and gasified. In order to increase the heat exchange area, improve the heat exchange efficiency and stabilize the temperature of the furnace body 410, an electric heating wire can be arranged outside the furnace body 410, and in order to reduce the heat loss, a layer of heat insulation material covering the electric heating wire can be coated outside the furnace body 410, so that the heat dissipation speed is reduced, the heat utilization rate is improved, and meanwhile, an operator is prevented from being scalded. Most of the oil heating shaft 420 and the electric heating shaft 430 are located in the cavity of the furnace body 410, the open end of the oil heating shaft 420 extends from the end of the furnace body 410 where the low temperature region is located to the outside of the furnace body 410 for introducing and discharging hot oil, and the end of the electric heating shaft 430 extends from the end of the furnace body 410 where the high temperature region is located to the outside of the furnace body 410. The driving device 450 is used for driving the oil heating shaft 420 and the electric heating shaft 430 to rotate, and the driving device 450 may be a diesel engine, a motor, or the like, preferably a motor, and may be connected to the electric heating shaft 430 through a transmission mechanism such as a coupling, a belt, a gear, or the like.

The oil heating plate 421 and the electric heating plate 431 are used for transferring heat of hot oil and the electric heating member 432 to the oil-based drilling cuttings, the structure, the distribution mode, the connection mode with the oil heating shaft 420 and the like of the oil heating plate 421 adopt the prior art, the oil baffle ring plate 422 also adopts the prior art, the function of guiding the hot oil is achieved, a rectangular wave-shaped hot oil channel is formed in the space between the oil heating plate 421 and the core pipe 440, the heat exchange area can be increased, the heat exchange speed is increased, and therefore the evaporation efficiency of the oil and the water in the oil-based drilling cuttings is improved. The oil inlet 441, the core pipe 440, the hot oil passage, and the oil outlet 442 constitute a flow path of the hot oil.

Because the oil-based drill cuttings have certain viscosity and may adhere to the inner wall of the furnace body 410 or the outer walls of the oil heating plate 421 and the electric heating plate 431, in order to avoid the influence of the oil-based drill cuttings on heat exchange due to the fact that the oil-based drill cuttings are thicker and thicker, the scrapers 423 are arranged on the oil heating plate 421 and the electric heating plate 431, the scrapers 423 are welded on the circumferential outer walls of the oil heating plate 421 and the electric heating plate 431, a small gap is formed between the scrapers 423 and the inner wall of the cylinder of the furnace body 410 or the scrapers 423 are in contact with the inner wall of the cylinder of the furnace body 410. In addition, the side wall of the oil heating pan 421 closest to the open end of the oil heating shaft 420 is provided with a first scraping mechanism 424, and the side wall of the electric heating pan 431 farthest from the oil heating shaft 420 is provided with a second scraping mechanism 433. The first scraping mechanism 424 and the second scraping mechanism 433 may be plates or rods welded on the oil heating plate 421 or the electric heating plate 431, and may hang off the oil-based drill cuttings adhered to the inner walls of the two end plates of the furnace body 410.

The top of the inner cavity of the furnace body 410 is provided with a fixing rod 411, the fixing rod 411 is provided with a plurality of mud scraping plates 412, and each mud scraping plate 412 is positioned between two adjacent electric heating plates 431 or two adjacent oil heating plates 421. Two ends of the fixing rod 411 can be mounted on end plates of the furnace body 410 through screws and the like, and the center lines of the oil heating shaft 420 and the electric heating shaft 430 are lower than the center line of the furnace body 410, so that the fixing rod 411 is positioned above the electric heating plate 431 and the oil heating plate 421. The mud scraping plate 412 can be a thin plate, the upper end of the thin plate is fixedly connected with the fixing rod 411, the lower end of the thin plate extends into the space between two adjacent electric heating plates 431 or two adjacent oil heating plates 421, two side edges of the thin plate are respectively contacted with the side walls of the two adjacent electric heating plates 431 or the two adjacent oil heating plates 421, or a small gap is formed between the two side edges of the thin plate and the side walls of the two adjacent electric heating plates 431 or the two adjacent oil heating plates 421, so that the oil-based drilling cuttings on the side walls of the two adjacent electric heating plates 431 or the two adjacent oil heating plates 421 can be hung off by the two side edges of the thin plate. In addition, the mud scraping plate 412 may also include a positioning rod and a door-shaped frame, the upper end of the positioning rod is fixedly connected to the positioning rod 411, the lower end of the positioning rod is fixedly connected to the top of the door-shaped frame, and the door-shaped frame extends into the space between two adjacent electric heating plates 431 or two adjacent oil heating plates 421. Because the furnace body 410 is in a horizontal state during use, the oil-based drill cuttings are located at the bottom of the furnace body 410 after entering the furnace body 410, the electric heating shaft 430 and the electric heating shaft 430 drive the oil heating plate 421 and the electric heating plate 431 to rotate, the lower portions of the oil heating plate 421 and the electric heating plate 431 are in contact with the oil-based drill cuttings to transfer heat to the oil-based drill cuttings, if the oil-based drill cuttings are adhered to the side walls of the oil heating plate 421 and the electric heating plate 431, when the oil heating plate 421 and the electric heating plate 431 rotate to the upper portions, the mud scraping plate 412 can hang the oil-based drill cuttings, the oil-based drill cuttings fall to the bottom of the furnace body 410 again, the problem that the thickness of the oil-based drill cuttings adhered to the oil heating plate 421 and the electric heating plate 431 is increased to affect the heat exchange efficiency is avoided, the heat exchange and mud scraping are not interfered with each other.

After the oil-based drill cuttings enter the furnace body 410, the oil heating plate 421 and the electric heating plate 431 rotate to play a certain role in stirring the oil-based drill cuttings, but the stirring effect is not good enough, and the oil-based drill cuttings are difficult to be pushed to move from a low-temperature area to a high-temperature area, therefore, a forward pushing assembly 460 and a reverse pushing assembly 470 are arranged on the circumferential outer wall of each of the oil heating plate 421 and the electric heating plate 431, the forward pushing assembly 460 can push a pushing mechanism of the oil-based drill cuttings to move towards the high-temperature area, and the reverse pushing assembly 470 can push a pushing mechanism of the oil-based drill cuttings to move towards the low-temperature area, when in use, the forward pushing assembly 460 continuously pushes the oil-based drill cuttings to move forward, and the reverse pushing assembly 470 continuously pushes the oil-based drill cuttings to move reversely, so that the oil-based drill cuttings can be fully stirred, and because, the oil-based drilling cuttings can be integrally moved towards the oil-based drilling cuttings discharge port positioned in the high-temperature area, so that the oil-based drilling cuttings are conveyed, and continuous treatment is realized. Specifically, the distribution of forward propulsion assemblies 460 and reverse propulsion assemblies 470 on each oil heating disk 421 and electric heating disk 431 may be: two forward propulsion assemblies 460, one reverse propulsion assembly 470, two forward propulsion assemblies 460 … …, or three forward propulsion assemblies 460, two reverse propulsion assemblies 470, three forward propulsion assemblies 460 … …, etc., arranged in sequence.

The forward propulsion assembly 460 and the reverse propulsion assembly 470 are propelled according to the principle of the conventional screw conveyor, and the forward propulsion assembly 460 and the reverse propulsion assembly 470 may be a single propulsion plate, which is disposed at an angle to the axial direction of the oil heating shaft 420, and the forward propulsion plate and the reverse propulsion plate are oriented differently. Preferably, each of the forward propulsion assembly 460 and the reverse propulsion assembly 470 includes a baffle 471 and a push plate 472, one end of the baffle 471 is connected to the push plate 472, the baffle 471 is perpendicular to the axial direction of the oil heating shaft 420, and the push plate 472 forms an acute angle or an obtuse angle with the axial direction of the oil heating shaft 420. The baffle 471 plays a role in blocking materials, the push plate 472 plays a role in pushing materials, and the length of the push plate 472 is small, so that the capacity of pushing materials to advance is weak, the efficiency is low, the baffle 471 is arranged, and the baffle 471 and the push plate 472 work in a matched mode, so that the material pushing capacity is strong.

In order to facilitate the installation of the oil heating shaft 420, the open end of the oil heating shaft 420 is provided with a shaft head 425, the shaft head 425 is installed on a first bearing seat through a bearing, and the first bearing seat is fixed on a component outside the furnace body 410, so that the oil heating shaft 420 can smoothly rotate. The shaft head 425 is connected with a rotary joint 426, the rotary joint 426 is provided with an oil inlet channel and an oil outlet channel, the oil inlet channel is connected with the oil inlet 441 and used for introducing hot oil, and the oil outlet channel is connected with the oil outlet 442 and used for discharging the hot oil. The rotary joint 426 is rotatable with respect to the oil heating shaft 420, and thus, when the oil heating shaft 420 rotates, the rotary joint 426 can be fixed to a part outside the furnace body 410 so as to stably supply and discharge the hot oil.

The electric heating shaft 430 can be a solid shaft, the electric heating element 432 can be a heating wire, an electric heating rod and the like, preferably, the electric heating shaft 430 is a hollow shaft, the electric heating element 432 is an electric heating pipe, one end of the electric heating pipe extends to an inner hole of the electric heating shaft 430, a lead connected with each electric heating element 432 is positioned in the inner hole of the electric heating shaft 430, the lead is used for connecting the electric heating element 432 with a power supply, and the lead is arranged in the inner hole of the electric heating shaft 430, so that the implementation is convenient.

A third thermocouple 434 is arranged in each electric heating plate 431 and is used for detecting the temperature in each electric heating plate 431, so that the heating power of the electric heating element 432 can be adjusted according to the process requirements, and the temperature can be controlled in a proper range.

The oil heating shaft 420 and the electric heating shaft 430 can be directly connected by welding or connected by a flange and a bolt, and preferably, the oil heating shaft 420 and the electric heating shaft 430 are connected by welding through the connecting disc 435, and the connection is firm and reliable.

As shown in fig. 4, the discharging device 3 includes a vertical slag discharging pipe 300, the upper end of the slag discharging pipe 300 is sealed by a sealing member 301, the lower end is connected with a tubular screw conveyor 302, the sidewall of the slag discharging pipe 300 below the sealing member 301 is provided with a slag inlet 303, the slag inlet 303 is connected with the oil-based drill chip discharge port of the furnace body 410, the slag discharging pipe 300 can adopt pipes such as stainless steel pipes, the upper end of the slag discharging pipe is sealed, and dust, oil and water vapor are prevented from entering the external air from the upper end of the slag discharging pipe 300. Tubular screw conveyer 302 includes the pipeline and sets up the spiral delivery board in the pipeline inside, tubular screw conveyer 302 slope sets up, the lower extreme of row's cinder pipe 300 and tubular screw conveyer 302's lower extreme sealing connection, after the waste residue in pyrolysis furnace 4 gets into row's cinder pipe 300 through advancing cinder notch 303, can fall to the bottom of row's cinder pipe 300 and pile up, the waste residue fills up the lower extreme of row's cinder pipe 300 gradually, along with the increase of waste residue, the waste residue forms the waste residue stopper in the bottom of row's cinder pipe 300, the waste residue stopper can play sealed effect, avoid external air to get into pyrolysis furnace 4, prevent the oil in pyrolysis furnace 4 simultaneously, water vapor passes through the waste residue eduction gear and discharges.

The waste residue is the graininess, has certain clearance each other, in order to reduce the space size between the waste residue granule, improves the sealed effect of waste residue stopper, be provided with (mixing) shaft 304 in the scum pipe 300, be provided with stirring piece 305 on the (mixing) shaft 304, the upper end of (mixing) shaft 304 runs through sealing 301 and is connected with power mechanism 306. Specifically, a second bearing seat 312 is arranged above the sealing member 301, and the stirring shaft 304 is mounted on the second bearing seat 312 through a bearing, so that stable mounting and rotation of the stirring shaft 304 are ensured. The power mechanism 306 is an electric motor, when the electric motor drives the stirring shaft 304 to rotate at a certain speed, the stirring sheet 305 on the stirring shaft 304 crushes the waste residue in the slag discharge pipe 300, so that the particle size of the waste residue is smaller, and the sealing performance of the waste residue plug can be improved.

in the working process of the device, the waste residue plug always has a certain height to meet the sealing requirement, in order to conveniently control the starting and stopping of the tubular spiral conveyor 302 to finish the outward transportation of the waste residue and avoid the too high or too low height of the waste residue plug, an upper level sensor 307 and a lower level sensor 308 are arranged in the slag discharge pipe 300 below the slag inlet 303, the tubular spiral conveyor 302 is started when the height of the waste residue plug reaches the upper level sensor 307, and the tubular spiral conveyor 302 is closed when the height of the waste residue plug reaches the lower level sensor 308, and the specific positions of the upper level sensor 307 and the lower level sensor 308 are determined according to the process requirement.

When the waste residue enters the slag discharging pipe 300 from the pyrolysis furnace 4, oil and water vapor also enter the slag discharging pipe 300 through the slag inlet 303, in order to avoid the oil and water vapor to be liquefied when meeting cold in the slag discharging pipe 300, thereby causing the waste of the oil and water vapor and the increase of the oil content in the waste residue, the outer wall of the slag discharging pipe 300 is provided with a first heating pipe 309 and a second thermocouple 310. The first heating pipe 309 is an electric heating pipe, the second thermocouple 310 is used for detecting the temperature in the slag discharging pipe 300, and when the temperature in the slag discharging pipe 300 is reduced to a certain value, the first heating pipe 309 is electrified to generate heat, so that the temperature in the slag discharging pipe 300 is increased, thereby effectively avoiding condensation and liquefaction of oil and water vapor and ensuring the recovery rate of oil and water.

The outer cladding of row's cinder pipe 300 is provided with heat preservation cover 311, and heat preservation cover 311 can be ceramic fiber material or glass fiber material etc. common insulation material, can reduce the heat loss, and heat preservation cover 311 wraps cinder pipe 300 and first heating pipe 309, reduces the energy consumption of first heating pipe 309, can avoid the staff direct contact to cinder pipe 300 and be scalded simultaneously.

The sealing member 301 may be an end cover plate, and preferably, the sealing member 301 includes a cylinder 3011 and end plates 3012 disposed at two ends of the cylinder, the cylinder 3011 is located in the slag discharging pipe 300 and connected to the slag discharging pipe 300, and the cylinder 3011 may be connected to the slag discharging pipe 300 by a screw, a welding connection, or a connection member such as a screw. The cylinder 3011 is provided with a second heating pipe 3013, and the second heating pipe 3013 is used to heat the end plate 3012 at the inner end of the cylinder 3011, so that the end plate 3012 is at a higher temperature, and condensation when oil and water vapor contact the end plate 3012 is avoided.

The second heating pipe 3013 and the first heating pipe 309 can be controlled by a controller, the second thermocouple 310 transmits the temperature to the controller, and the controller controls the second heating pipe 3013 and the first heating pipe 309 to be powered on and off according to the detection result, so that automatic control is realized.

In conclusion, the discharging device 3 has the following advantages:

1) Prevent in the air admission pyrolysis oven 4, guarantee pyrolysis oven 4 work safety: the starting and stopping of the tubular screw conveyor 302 are controlled by the upper level sensor 307 and the lower level sensor 308, so that the waste residue plug in the slag discharge pipe 300 is ensured to be at least kept at a certain height, the material plug is formed to isolate air, and the caking waste residue is smashed into powder by the rotation of the stirring shaft 304, which is favorable for ensuring the air tightness of the waste residue plug.

2) The oil content of the waste residue is reduced to the maximum extent, and the waste residue emission is ensured to meet the national standard: electric heating pipes are arranged in the slag discharge pipe 300 and the sealing piece 301 for heating the cavity and the sealing piece, so that oil and water vapor are prevented from being mixed in waste slag after being condensed.

3) The heat preservation and energy saving effect is good: the second thermocouple 310 can detect the cavity temperature of the slag discharging pipe 300, and is used for controlling the second heating pipe 3013 and the first heating pipe 309 to be started and stopped, so that the cavity temperature is kept constant, and the electric heating pipe does not need to be started all the time; the outer wall of the slag discharging pipe 300 is provided with a heat insulation cover 311, so that the cavity of the slag discharging pipe 300 is heat-insulated and energy-saving, and an operator is prevented from being scalded.

4) The device has compact structure and small volume, and can be organically combined with oil-based sludge thermal desorption equipment.

As shown in fig. 8 and 9, the dust removing device 2 includes a horizontal pipe body 200, and the pipe body 200 is a metal pipe, which may be a stainless steel pipe. The one end of body 200 is open inlet end 201, and inlet end 201 links to each other with the gas vent of furnace body 410 for let in the mixture of dust and oil, vapor, and the other end is the confined end of giving vent to anger, avoids oil, vapor to leak, it is provided with gas outlet 202 to give vent to anger the end, is used for discharging oil, vapor after the dust removal.

specifically, an expansion joint 212 is connected to the air inlet end 201 of the pipe body 200, and an air inlet flange 213 is connected to the expansion joint 212. Expansion joint 212 can axially stretch out and draw back, can effectively compensate the axial deformation of body 200 to link to each other inlet end 201 with external oil, vapor delivery pipe when assembling this device, specifically link to each other with external delivery pipe through air intake flange 213, be used for letting in the mixture of oil, vapor and the dust that pyrolysis oven 4 produced body 200. Similarly, the air outlet 202 is connected to an air outlet flange 214, and is connected to an external conveying pipeline through the air outlet flange 214, so as to convey the dust-removed mixed vapor to a condensation separation device.

The air outlet end of the tube 200 is sealed by an end cap 208, and the air outlet 202 is arranged on the tube 200 inside the end cap 208. The end cap 208 may be screwed to the tube 200 to block oil and water vapor from leaking, thereby ensuring that the oil and water vapor are discharged from the air outlet 202.

The inside of body 200 is provided with pivot 203, be provided with spiral dust board 204 on the pivot 203, form spiral air current passageway between pivot 203, dust board 204 and the body 200, the one end of pivot 203 is connected with actuating mechanism 205. Oil, the mixture of vapor and dust can flow along spiral air current channel behind letting in body 200, at the in-process that flows, owing to receive keeping off the hindrance of dirt board 204, speed can reduce gradually, the dust then can subside in body 200 bottom, it is rotatory according to the direction of setting for to utilize actuating mechanism 205 to drive pivot 203 and dirt board 204, pivot 203 and body 200 constitute spiral delivery mechanism, can carry the dust of subsiding in body 200 to inlet end 201 and discharge to the furnace body 410 from inlet end 201, thereby realize removing dust.

in order to facilitate the installation and smooth rotation of the rotating shaft 203, a third bearing seat 209 is arranged outside the air outlet end of the tube body 200, one end of the rotating shaft 203 passes through the end cover 208 and then is installed on the third bearing seat 209 through a bearing, and the driving mechanism 205 is an electric motor and can be connected with the electric motor and the rotating shaft 203 through a speed reducer to provide power for the rotation of the rotating shaft 203.

Because the temperature of the oil and the water vapor is higher, in order to avoid the condensation and liquefaction of the vapor caused by the great temperature reduction of the vapor in the dust removal process, a first thermocouple 211 is arranged in the tube body 200, an external heating pipe 206 is arranged on the outer wall of the tube body 200, an insulating layer 207 for coating the external heating pipe 206 and the tube body 200 is arranged outside the tube body 200, and an internal heating pipe 210 is arranged on the inner side of the end cover 208. The outer heating tube 206 and the inner heating tube 210 are both electric heating tubes. The first thermocouple 211 is used for detecting the temperature in the pipe body 200, when the temperature is low, the outer heating pipe 206 and the inner heating pipe 210 are electrified, the heat generated by the outer heating pipe 206 and the inner heating pipe 210 is transferred to oil and water vapor, the temperature of the oil and the water vapor is maintained at a proper value, the oil and the water vapor are prevented from being cooled and condensed in the pipe body 200, and most of the oil and the water vapor can pass through the dust removal device and enter a subsequent condensation separation device. The operation of outer heating pipe 206 and inner heating pipe 210 can be automatically controlled by a controller, first thermocouple 211 transmits a temperature signal to the controller, and the controller judges whether to open outer heating pipe 206 and inner heating pipe 210 according to a detection result, so that the manual operation amount is reduced, and the labor cost is saved. In order to avoid large heat loss and reduce the energy consumption of the external heating pipe 206 and the internal heating pipe 210, the outer wall of the pipe body 200 is coated with the heat-insulating layer 207, the heat-insulating layer 207 can effectively reduce the heat dissipation speed, and meanwhile, workers can be prevented from being scalded. The insulating layer 207 can be made of various existing insulating materials, such as a ceramic fiber layer, a glass fiber layer, and the like.

This dust collector 2 has following advantage:

1) The dust removal effect is good: most of dust in high-temperature oil and water vapor can be removed, and the condensation efficiency of the subsequent process and the purity of the recovered oil are effectively improved.

2) The oil-water vapor passing rate is high: the electric heating tubes are arranged on the outer wall of the pipe body 200 and the end cover 208, so that oil vapor is not cooled down when passing through the dust remover, and the passing rate of the oil vapor is effectively improved.

3) The energy-saving effect is good: the whole pipe body 200 is covered by the heat preservation layer 207 for heat preservation, the first thermocouple 211 is installed in the pipe body 200, the starting and stopping of the electric heating pipe are controlled according to technological parameters, the temperature of the inner cavity of the dust remover is kept constant, and the electric heating pipe is not required to be continuously started.

4) The device of the invention has compact structure and small volume, and can be used in combination with pyrolysis equipment.

As shown in fig. 5, 6 and 7, the condensation and separation device 1 includes a housing 100 having an inner cavity, and the housing 100 may be made of stainless steel, aluminum alloy, or the like, and may have various shapes such as a rectangular parallelepiped. The inner cavity of the shell 100 is divided into a condensation cavity 102 and a separation cavity by a guide plate 101, and the guide plate 101 can be horizontally arranged or have a certain inclination, so that the condensed oil-water mixture flows into the separation cavity.

The top of the condensation cavity 102 is provided with a feed inlet 103 and a plurality of condensation nozzles 104, the feed inlet 103 is provided with a flange, and the flange can be connected with an air outlet 202 of the dust removal device 2 through a pipeline, so that gaseous oil water after dust removal can be conveniently introduced into the condensation cavity 102. The condensation nozzle 104 is connected to a condensation water source for introducing low-temperature condensation water into the condensation chamber 102, so as to cool the high-temperature gaseous oil and water to condense the high-temperature gaseous oil and water into a liquid state, thereby facilitating subsequent separation. The number of the condensation nozzles 104 can be multiple, such as 6, 8, etc., and they are uniformly distributed on the top of the condensation chamber 102, so as to ensure uniform and effective cooling of the gaseous oil and water.

in order to facilitate the control of the temperature and the pressure in the condensation chamber 102, a pressure transmitter 118 and a temperature sensor 119 are arranged in the condensation chamber 102, the pressure transmitter 118 can detect the pressure in the condensation chamber 102, the temperature sensor 119 can detect the temperature in the condensation chamber 102, and the opening number and the opening time of the condensation nozzles 104 are controlled according to the detection result, so that the temperature and the pressure in the condensation chamber 102 can be controlled to be adjusted, and the temperature and the pressure in the condensation chamber 102 can be controlled to be proper. The work of condensation shower nozzle 104 can be controlled by the controller, and pressure transmitter 118 and temperature sensor 119 will detect signal transmission to the controller, and the operation of condensation shower nozzle 104 is controlled according to the testing result again to the controller to realize automated control, control is in time effective, and the amount of labour reduces.

The separation chamber is separated into a plurality of separating chambers of arranging in proper order by vertical baffle 105, the overflow channel who communicates two adjacent separating chambers has between the top of baffle 105 and guide plate 101, is provided with inlet channel 106 on the guide plate 101 that is located the separating chamber top of one end, and specifically, inlet channel 106 can be the through-hole of seting up on guide plate 101, also can be the clearance that has between guide plate 101 and the casing 100 inner wall, and when guide plate 101 slope set up, inlet channel 106 is located the lower one end of guide plate 101 height. The top of the separation chamber at the other end is connected with an oil recovery chamber 107, namely, the top of the separation chamber far away from the liquid inlet channel 106 is connected with the oil recovery chamber 107, the bottom of the separation chamber is connected with a water recovery chamber 108, the oil recovery chamber 107 is connected with an oil discharge channel 109, and the water recovery chamber 108 is connected with a water discharge channel 110. The oil-water mixed gas is condensed into a liquid state in the condensation cavity 102 and then enters the separation chambers through the liquid inlet channel 106, after standing and layering of each separation chamber, oil on the upper layer flows into the oil recovery chamber 107 and then is discharged through the oil discharge channel 109 for utilization, and water on the lower layer flows into the water recovery chamber 108 and then is discharged through the water discharge channel 110 for utilization. Flanges are provided at both the oil discharge passage 109 and the water discharge passage 110 for connecting external pipes so as to deliver oil and water to a designated device. In order to realize smooth discharge of oil and water, a pump can be arranged on the external pipeline as a power mechanism.

In order to facilitate determination of the liquid levels in the water recovery chamber 108 and the oil recovery chamber 107 for controlling the progress of oil discharge and water discharge and to avoid determination of too high or too low liquid levels in the water recovery chamber 108 and the oil recovery chamber 107, an upper water level switch 114 and a lower water level switch 115 are provided in each of the water recovery chamber 108 and the oil recovery chamber 107. As the separation progresses, the liquid level in the water recovery chamber 108 and the oil recovery chamber 107 increases, and when the liquid level rises to the upper water level switch 114, the control pump starts to pump out the water in the water recovery chamber 108 or the oil in the oil recovery chamber 107, and at this time, the liquid level in the water recovery chamber 108 or the oil recovery chamber 107 falls, and when the liquid level falls to the lower water level switch 115, the control pump is turned off to stop pumping water or pumping oil. The upper water level switch 114 and the lower water level switch 115 can be connected with a controller, and the controller is used for controlling the operation of the pump, so that the automatic operation of the equipment is realized.

The separating chamber can be 2, 3, 4 etc. preferentially, the preferred, the separating chamber is including the cooling dilution room 111 that sets gradually, preliminary layering room 112 and secondary layering room 113, inlet channel 106 sets up in the top of cooling dilution room 111, and oil-water mixture liquid passes through inlet channel 106 and gets into behind the cooling dilution room 111, can let in the comdenstion water to cooling dilution room 111, cools down the cooling and dilutes oil-water mixture liquid, then, the liquid in the cooling dilution room 111 passes through overflow path and gets into preliminary layering room 112. Preliminary stratification chamber 112 is used for the preliminary layering of stewing of profit, through the layering after, can discharge the water of lower floor, and the oil and a small amount of water of upper strata pass through overflow channel and get into secondary stratification chamber 113, and secondary stratification chamber 113's volume is greater than preliminary stratification chamber 112, can make the profit stratify better. The top of the secondary stratification chamber 113 is communicated with the oil recovery chamber 107, and the bottom of the secondary stratification chamber 113 is communicated with the water recovery chamber 108, specifically, a first isolation plate may be disposed between the secondary stratification chamber 113 and the oil recovery chamber 107, a second isolation plate may be disposed between the oil recovery chamber 107 and the water recovery chamber 108, an upper space may be provided between the top of the first isolation plate and the guide plate 101, oil on the upper layer of the secondary stratification chamber 113 may enter the oil recovery chamber 107 through the upper space, a lower space may be provided between the bottom of the first isolation plate and the bottom plate of the housing 100, the top of the second isolation plate is fixedly connected to the guide plate 101, a lower space may be provided between the bottom of the housing 100 and the bottom plate of the second isolation plate, and the bottom of the second isolation plate is connected to the bottom of the first isolation plate through a horizontal connection plate, at this time, water on the lower layer in the secondary stratification chamber 113 may enter the water recovery chamber 108. Through primary separation and secondary separation, the separation of oil and water is sufficient, and the purity of the separated oil is high.

Along with the oil-water separation, the suspended solid at the oil-water interface in the secondary layering chamber 113 can be continuously increased, so that a sewage discharge flange is arranged on the side wall of the middle part of the secondary layering chamber 113 and used for periodically discharging the suspended solid, and the influence on the oil-water separation effect caused by the continuous increase of the suspended solid is avoided.

In order to avoid the situation that the liquid level in the secondary layering chamber 113 is too high, a highest liquid level detection switch is arranged in the secondary layering chamber 113, when the liquid level reaches the highest liquid level detection switch, the equipment needs to be checked, and the safe operation of the equipment is guaranteed.

In order to make full use of the separated water and reduce the consumption of condensed water outside, the bottom of the primary stratification chamber 112 is connected to the condensate shower head 104 through a pipe (not shown) having a pump. Specifically, the bottom side wall of the preliminary lamination chamber 112 is provided with a flange, and the flange is connected with a pipe, and the pipe is connected with the condensation shower head 104. The pump can pump the water in the lower layer of the primary layering chamber 112 to the condensation nozzle 104 to be used as high-temperature gaseous oil-water and other condensed water, so that the circulation of the water is realized.

The lower layer of the preliminary stratification chamber 112 has a low temperature of water, and in order to further utilize the water, the bottom of the cooling dilution chamber 111 is communicated with the upper part of the cooling dilution chamber 111 through a pipe which passes through a heat exchanger 120, and the bottom of the preliminary stratification chamber 112 is connected with the heat exchanger 120 through a pipe. When the water in the lower layer of the primary layering chamber 112 and the mixed liquid in the cooling dilution chamber 111 pass through the heat exchanger 120, the water exchanges heat with the mixed liquid, so that the temperature of the mixed liquid is reduced, and then the mixed liquid enters the cooling dilution chamber 111 again to play a cooling role, and the temperature of the water is increased, and the water can be conveyed to other equipment for utilization. The flow of the water in the lower layer of the preliminary stratification chamber 112 and the mixed liquid in the cooling dilution chamber 111 may be powered by a pump. The heat exchanger 120 may be any conventional heat exchange device.

the bottom of each separation chamber is provided with a drain outlet 117, and a flange is arranged at the drain outlet 117 and is used for being connected with an external drain pipeline so as to drain each separation chamber regularly.

A plurality of openable and closable window covers 121 are arranged on the top of the condensation chamber 102 and the shell 100 on the side of each separation chamber, so that each condensation nozzle 104 and each separation chamber in the condensation chamber 102 can be conveniently overhauled, the working condition can be observed, manual cleaning can be carried out, and the like. In addition, a glass observation window can be arranged on the side wall of the secondary stratification chamber 113 so as to observe the stratification condition of oil, water and suspended matters inside.

The lateral wall of cooling diluting room 111 is provided with safety valve jar connecting pipe 122, safety valve jar connecting pipe 122 is used for linking to each other with the safety valve jar 123 on the pyrolysis oven 4, for making equipment work normally safely, keep the pressure-fired all the time in the pyrolysis oven 4, the maximum pressure safety value is guaranteed through safety valve jar 123, after the internal pressure exceeds the settlement pressure in the pyrolysis oven 4, oil water vapor opens immediately through safety valve jar 123 and carries out the release, the inside oil water mist of pyrolysis oven 4 directly gets into cooling diluting room 111 through safety valve jar connecting pipe 122, then the cooling is liquid, avoid the inside pressure of pyrolysis oven 4 to continuously increase and cause the accident, can guarantee the safe operation of pyrolysis oven 4.

The oil discharge channel 109 is connected with an oil recovery tank 130, oil in the oil recovery chamber passes through the oil recovery tank 130 of the oil discharge channel 109 and is stored, the oil recovery tank 130 is connected with a combustion cavity of the heat conduction oil heating boiler device 6 through a pipeline, and part of the oil in the oil recovery tank 130 can be conveyed to the combustion cavity of the heat boiler device 6 and used as fuel of the heat boiler device 6, so that the use amount of other fuels can be reduced.

the drain passage 110 is connected to a water recovery tank 132 for recovering water stored in the water recovery chamber 108.

There are a small amount of non-condensable gas in the oil-water mixture, in order to discharge and handle these non-condensable gases, the top of separation chamber is provided with non-condensable gas discharge passage 116, non-condensable gas discharge passage 116 is connected with non-condensable gas tank 131, non-condensable gas tank 131 passes through the pipeline and links to each other with the combustion chamber of conduction oil heating boiler device 6. The noncondensable gas enters the noncondensable gas tank 131 through the noncondensable gas discharge passage 116, then is conveyed to the combustion chamber of the heat-conducting oil heating boiler device 6 through a pipeline, avoids air pollution caused after the noncondensable gas is emptied, does not need to utilize the purifying equipment to treat the noncondensable gas, can also serve as the fuel of the heat-conducting oil heating boiler device 6, and reduces the consumption of other fuels.

The condensation separator device 1 has the following advantages:

1) The condensation effect is good: a plurality of condensation nozzles 104 are arranged in the condensation cavity 102, and a certain number of condensation nozzles 104 are controlled to be started or stopped according to the pressure value in the condensation cavity 102, so that the optimal condensation effect is achieved.

2) The recovered oil has high purity and high reuse value: a plurality of separation chambers are arranged according to the separation process, so that the condensed oil-water-dust mixed liquid is further condensed and stably stands for a long time for layering, high-purity oil liquid can be obtained, and the recovered oil and 0# diesel oil have basically the same components.

3) the degree of automation is high: a pressure transmitter 118 and a temperature sensor 119 are arranged in the condensation cavity 102, and the condensation nozzle 104 can be automatically controlled to start and stop according to the process parameters; a plurality of liquid level switches are arranged in the separation cavity, and the recovery oil pump and the recovery water pump can be automatically controlled to be automatically started and stopped, and the maximum liquid level is monitored.

4) Energy saving and good circular economy: the condensed water required by the condensation nozzle 104 comes from the cooling water at the lower layer of the primary layering chamber 112 and can be recycled.

Because the equipment quantity of the pyrolysis furnace 4, the feeding device 5, the discharging device 3, the dust removing device 2, the condensation separator device 1 and the like is large, all the components are generally transported to a use place separately and then assembled together, when the position of the whole equipment needs to be changed, all the components need to be disassembled and transported separately, which is very inconvenient, therefore, as shown in fig. 10, the present invention further comprises a rectangular base 7, wherein the side of the base 7 is hinged with a surrounding plate 71, the edge of the upper surface of the base 7 is connected with a horizontal top plate 73 through a plurality of vertical connecting columns 72, the upper end of the surrounding plate 71 is detachably connected with the top plate 73, and the top plate 73, the enclosing plate 71 and the base 7 enclose an installation cavity, and the pyrolysis furnace 4, the feeding device 5, the discharging device 3, the dust removing device 2, the condensation separator device 1 and the heat-conducting oil heating boiler device 6 are all installed in the installation cavity. When the position of the device needs to be changed, the enclosing plate 71 is rotated upwards and is fixedly connected with the top plate 73, the internal equipment is protected by the enclosing plate 71, the top plate 73 and the base 7, the appearance of the whole equipment is cuboid, skid-mounting of the equipment is realized, and the device is similar to a container, as shown in fig. 11, so that the whole device is convenient to transport.

In conclusion, the thermal desorption effect is good, and the oil content of the waste residue after the oil-based drilling cuttings are treated by adopting a reasonable treatment process is not more than 0.3 percent and completely meets the national environmental protection standard; the outer surface of the whole rotor disc is a heat exchange area with the oil-based drilling cuttings, so that the heat exchange area of the oil-based drilling cuttings is maximized in a limited space, and the thermal desorption efficiency is improved; the rotor device adopts a mode of heat conduction oil heating (low temperature region) and electric heating (high temperature region), wherein oil heating provides most heat, electric heating only provides a small part of heat, heat conduction oil is heated by a boiler (fuel oil), and recovered diesel oil can be used as boiler fuel, so that the cost for treating oil-based drilling cuttings in a long-term large-scale manner is low, and the rotor device is economical and energy-saving; the non-condensable gas generated in the production process passes through a non-condensable gas treatment device and then enters a heat conduction oil boiler to be combusted, and the non-hazardous emission is realized; the skid-mounted type container has the advantages of skid-mounted type, strong maneuverability, convenience in transportation, small occupied area, low requirements for plants and foundations, and capability of meeting the requirement of good field maneuverability.