阅读说明：本技术 一种脱悬浮物与油水分离耦合的装置和方法 (Suspended matter removal and oil-water separation coupling device and method ) 是由 杨秀娜 何佳 阮宗琳 于 2019-10-31 设计创作，主要内容包括：一种脱悬浮物与油水分离耦合的装置和方法,装置包括均质系统和脱除系统,均质系统包括一个均质反应器,用于将待处理物料中的大块悬浮物均质化成较小的悬浮物,处理后的物料进入脱除系统,先进行初步的油水分离和脱悬浮物,脱除系统为一个立式反应器,上部中间设置一个套筒,为脱油区,填充纤维填料,套筒外环形的区域为脱悬浮物区,填充吸附填料,脱除后的水相出料,油相进入下部的除水区,其内填充油水分离填料,实现油水深度分离。本发明的装置和方法中,首先采用均质系统对悬浮物进行均匀化处理,将形状不规则的、尺寸大小不一的、且较多为大块“海带”状的悬浮物均质处理为形态及尺寸都较小的悬浮物,一方面解决后续脱悬浮物过程生产效率低、容易堵塞填料等问题,另一方面不影响集成油水分离方法中的油水分离填料的堵塞和使用效果。(The utility model provides a take off device and method of suspended solid and water oil separating coupling, the device includes homogeneous system and desorption system, homogeneous system includes a homogenizing reactor, be arranged in with the bold suspended solid homogenization in the pending material becoming less suspended solid, the material after the processing gets into the desorption system, carry out preliminary water oil separating earlier and take off the suspended solid, the desorption system is a vertical reactor, set up a sleeve in the middle of the upper portion, for deoiling the district, the packing fibre packs, the outer annular region of sleeve is for taking off the suspended solid district, fill adsorption filler, the aqueous phase ejection of compact after the desorption, the oil phase gets into the except that the water district of lower part, it packs oil-water separation filler to fill in it, realize the oil-water degree of depth separation. In the device and the method, firstly, a homogenizing system is adopted to homogenize suspended matters, and suspended matters which are irregular in shape, different in size and more in the shape of large kelp are homogenized into suspended matters with smaller shapes and sizes, so that the problems of low production efficiency, easiness in filler blockage and the like in the subsequent suspended matter removal process are solved, and the blockage and the use effect of the oil-water separation filler in the integrated oil-water separation method are not influenced.)

1. A device for removing suspended matters and coupling oil-water separation is characterized by comprising a homogenizing system and a removing system, wherein the homogenizing system comprises a homogenizing reactor, the middle part of the homogenizing reactor is provided with a through homogenizing bin, the homogenizing bin is a space formed by two porous partition plates, the partition plates divide the space in the homogenizing reactor into three parts, the bottom of the homogenizing reactor is provided with a gas distribution device I, the top of the homogenizing reactor is provided with a gas outlet I, one side of the homogenizing bin is connected with a feed inlet I, and a discharge outlet I is arranged on the other side opposite to the feed inlet I and is positioned at the upper part of the homogenizing reactor; the device comprises a material outlet I, a material removing system and a material removing system, wherein the material outlet I is connected with the material removing system, the material removing system comprises a vertical reactor, a sleeve is arranged in the middle of the upper part of the reactor and is an oil removing area, an outer annular area of the sleeve is a suspension removing area, the lower part of the reactor is a water removing area, fiber fillers are filled in the oil removing area, a filler baffle is arranged at the top of the oil removing area, a material inlet II is arranged on the filler baffle and is; the suspension removing area is filled with adsorption filler, and the outer wall of the suspension removing area is provided with a discharge hole III; the bottom of the suspension removing area is provided with a gas distribution device II, and the top of the reactor is provided with a gas outlet II; the water removal area is arranged at the bottom of the vertical reactor and communicated with the oil removal area, oil-water separation filler is filled in the water removal area, and a discharge hole IV is arranged at the bottom of the water removal area.

2. The apparatus of claim 1, wherein the homogenizing silo is a region capable of homogenizing the feed material, and is selected from any one or more of an ultrasonic reactor, a microwave oscillation reactor, a mechanical stirrer, a magnetic stirrer and the like.

3. The apparatus of claim 1, wherein the gas distribution means I and II are microbubble generators forming bubbles having a size of 50nm to 1000 μm.

4. The apparatus according to claim 1, wherein the gas outlet I at the top of the homogenizing reactor is further connected to a gas distribution device I through a supercharger I.

5. The apparatus according to claim 1, wherein the gas outlet II is further connected to a gas distribution device II through a booster II.

6. The apparatus of claim 4 or 5, wherein the supercharger I and supercharger II are selected from the group consisting of one or more of a compressor, a dissolved air pump, and a high pressure jet pump.

7. The device of claim 1, wherein the fiber filler in the deoiling area is in any shape, is filled by a way of stacking multiple fiber layers, is woven by fiber yarns, and has a concave-convex structure with any one of an X-shaped, a V-shaped, an 8-shaped, an omega-shaped, a water drop-shaped or a diamond-shaped surface.

8. The device according to claim 7, wherein the fiber filler is a composite fiber filament woven by oleophilic and hydrophobic fibers and hydrophilic and oleophobic fibers, wherein the ratio of the hydrophilic and oleophobic fibers to the oleophilic and hydrophobic fibers is 1: 2-1: 20, the oleophilic and hydrophobic fiber filament is selected from at least one of polyester fiber filament, nylon fiber filament, polyurethane fiber filament, polypropylene fiber filament, polyacrylonitrile fiber filament and polyvinyl chloride fiber filament, and the hydrophilic and oleophobic fiber filament is selected from natural high molecular polymer polypropylene fiber with carboxyl, amino or hydroxyl on the main chain or side chain, or is selected from materials with the surface subjected to hydrophilic and oleophobic treatment.

9. The apparatus of claim 1, wherein the zone of the suspended matter is divided into a plurality of sections in the vertical direction, each section being separated by two parallel porous partitions, the two parallel porous partitions opening into the reactor wall to form a discharge opening iii of the zone of the suspended matter.

10. The apparatus of claim 1, wherein the adsorbent packing is of a density of 50kg/m³～900kg/m³The oleophilic type filler is selected from at least one of ester, polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, acrylic acid and nylon, or is selected from materials of which the surfaces are subjected to oleophilic treatment.

11. The apparatus of claim 10, wherein the adsorbent packing is any one of a large-pore honeycomb packing, a large-pore wire mesh packing, a hollow packing, a fabric packing, and a corrugated tooth angle packing.

12. The apparatus of claim 1, wherein the adsorptive filler is in a non-fixed packed state within the region of the resuspension zone, and the porosity of the filler is in the range of 30% to 95%.

13. The device according to claim 1, wherein the oil-water separation filler in the water removal area is divided into two sections, the upper section is a coalescence filler, and the coalescence filler is woven by hydrophilic oleophobic fiber and oleophilic hydrophobic fiber according to the mass ratio of 2: 1-20: 1; the lower section is filled with corrugated plates.

14. A method for performing suspended substance removal and oil-water separation coupled treatment by using the device of any one of claims 1 to 13, comprising the following steps: the method comprises the following steps that materials to be treated enter a homogenizing bin from a feeding hole I, a gas distribution device I is used for feeding gas, under the action of the homogenizing bin and bubbles, suspended matters in the materials to be treated are homogenized and enter a deoiling area from a discharging hole I, under the action of fiber fillers, a water phase and an oil phase are subjected to preliminary separation, the water phase serving as a light phase is on the upper side, the oil phase serving as a heavy phase is on the lower side and enters a dewatering area, the water phase carries the suspended matters and enters the zone for separating the suspended matters from a discharging hole II, and the suspended matters are removed under the action of the bubbles introduced by an adsorption filler and gas distribution device II and discharged from; and the oil phase enters the water removal area and then is separated under the action of an oil-water separation filler, and the oil phase at the bottom is discharged from a discharge hole IV.

15. The method according to claim 14, wherein the material to be treated is selected from any one of heavy inferior raw oil, heavy dirty oil and coal tar, or oil product after electric desalting of raw oil or cut oily sewage.

16. The method of claim 14, wherein the material to be treated is injected with water in an amount of 3-20% by mass of the oil.

17. The method as claimed in claim 14, wherein the size of the suspension after homogenizing treatment is controlled by controlling the force of the homogenizing silo, the air input of the air distribution device I and the size of the air bubbles, so that the diameter of the suspension is smaller than the pore diameter of the fiber filler in the deoiling area.

18. The method as claimed in claim 14, wherein the gas introduced into the gas distribution unit i and the gas distribution unit ii is selected from nitrogen, air or an inert gas.

19. The method as claimed in claim 14, wherein the ratio of the aeration rate of the gas distribution device i to the volume of the feedstock to be treated is 1:1 to 500: 1.

20. The method as claimed in claim 14, wherein the ratio of the aeration rate of the gas distribution device II to the volume of the raw material to be treated is 100:1 to 1000: 1.

21. The method of claim 14, wherein the operating conditions of the homogenization system are as follows: the temperature is normal temperature to 200 ℃, and the pressure is 0.3 to 10.0 MPa.

22. The method of claim 14, wherein the removal system is operated under the following conditions: the temperature is normal temperature to 150 ℃, preferably 30 to 80 ℃; the pressure is 0.1 to 10.0MPa, preferably 0.1 to 1.0 MPa.

Technical Field

The invention belongs to the technical field of petrochemical industry, and particularly relates to a coupling device and a coupling method for removing suspended matters and separating oil from water.

Background

The first step of crude oil processing is desalting and dewatering, which is to add small amount of water into crude oil, fully mix them to dissolve salt in water, then add demulsifier with proper content, under the action of electric field under a certain temp. and pressure, make water drop become bigger to obtain settlement separation, and this process is called crude oil electric desalting and dewatering. Therefore, the oil-water separation effect is of great significance to the subsequent processing of the refinery because the salt is dissolved in water.

In recent years, along with the enhancement of the tendency of crude oil to be inferior and heavy, more crude oil contains a certain amount of colloidal suspended matters, and no facilities for removing suspended matters from crude oil exist in the prior art, so that more problems are brought to the crude oil dehydration and desalination process and subsequent processing devices, and the main expression is as follows: (1) the colloidal suspended substance in the crude oil is suspended in the oil product in a flaky or flocculent way, so that the flowing equipment and pipelines are easily blocked; (2) the colloid suspended matters are not easy to be polarized in the traditional electric desalting process, so that deep oil-water separation is difficult to realize, the oil-water separation is incomplete, and the two phases are seriously carried with each other; (3) the removal of these colloidal suspensions, which results from the rapid clogging of the filter by conventional filtration methods, does not allow long-term operation. In summary, due to the presence of colloidal suspensions, whether they are in the oil or in the sewage, they have a number of adverse effects that require the development of suitable methods for their removal depending on the crude oil processing scheme.

In the prior art, the crude oil electric desalting and dewatering method is not provided with a process and equipment for removing colloid suspended matters, and crude oil electric desalting and dewatering equipment also has no function of removing suspended matters, so that the following problems exist: (1) colloid suspended matters in the crude oil electric desalting and dewatering process are in a suspended state, cannot be removed by settling separation, and meanwhile, the suspended matters cannot be polarized by an electric field to influence the desalting effect and also are the main reasons for causing the salt content index in the desalted crude oil to be unqualified; (2) the colloid suspended substance is an oil substance with light density but is insoluble in water, so that the oil-water separation effect is influenced in the oil-water separation process, the oil-water two phases are very seriously carried with each other, and the water content in the oil product is higher. Therefore, if the oil product is desalted and dehydrated, i.e. the oil-water separation, achieves a good effect, new processes and equipment need to be developed, and the problems of poor desalting effect, serious mutual entrainment of oil and water phases and the like in the oil product desalting and dehydrating process can be solved by adopting an effective method to remove suspended matters in the oil product.

CN 109453561A proposes a method for removing suspended matters in grease, which is a method for removing suspended matters in grease and comprises the steps of carrying out primary filtration on primary oil to obtain primary filtered oil; then, carrying out secondary filtration on the primary filtered oil to obtain secondary filtered oil; filtering the second filtered oil for the third time to obtain third filtered oil; performing fourth filtration on the third filtered oil by using a bag filter; in conclusion, the method of multi-stage filtration is adopted to remove suspended matters in the grease. The method has the problems that the filtering equipment is rapidly blocked and cannot be operated for a long period.

CN201280072453.4 proposes a filter device and a method for filtering suspensions, wherein the filter device has a pack of at least one recess plate and adjacent recess plates, said pack being between a fixed head piece and a movable end piece, the filter device having a suspension pipe for piping a first flow of suspension from the head piece into the pack, said suspension pipe extending through said pack to the end piece, wherein the filter device has a supply pipe for conveying a second flow pipe of the suspension into the suspension pipe, said connection supply pipe being connected to the end piece, wherein a filter cavity is formed between the recess plate and the adjacent recess plate, the recess plate and/or the adjacent recess plate having a recess, wherein the recess plate has a suspension conduit for conveying the suspension from the suspension pipe to the filter chamber, the filter device having at least one filter cloth for filtering solid components from the suspension. The principle of the method is that the suspended matters are filtered by adopting the principle of the filter cloth, and the problems that the filter cloth is easy to block and cannot be used for a long time still exist.

CN101972559A proposes an oil-water separation device and an oil-water separation method, the device comprises a cyclone with a U-shaped bottom flow pipe and a horizontal coalescent oil-water separator with the function of uniformly distributing liquid. An inlet liquid distributor, a rectifying sieve plate, a stainless steel corrugated filler fixed by a limit grid plate, a polypropylene wire mesh corrugated filler, an outlet collector and the like are sequentially arranged in the horizontal coalescent oil-water separator. The bottom flow pipe of the cyclone and the filter screen arranged in the bottom flow pipe can filter a small amount of solid impurities contained in liquid so as to avoid blocking coalescing filler, the inlet liquid distributor and the outlet liquid collector ensure that the liquid is uniformly distributed, the rectifying sieve plate ensures that the flow velocity of the liquid is reduced to be laminar flow, the stainless steel plate corrugated filler provides a place for coalescing and separating oil drops, and the polypropylene wire mesh corrugated filler with the air floatation device can further coalesce and separate the residual fine oil drops. The purpose of this patent is to achieve deep separation of oil and water, but without the function of removing suspended matter, if the feed contains suspended matter, it will also cause blockage in the packing.

In conclusion, the development of the device and the method capable of efficiently removing the suspended matters in the crude oil and separating the oil from the water has great significance in solving the problems of poor desalting and dewatering effect, blockage of filtering equipment by the suspended matters or oil-water separation filler, serious mutual entrainment of oil and water phases and the like in the oil desalting and dewatering process.

Disclosure of Invention

The invention provides a device and a method for efficiently removing suspended matters in crude oil and separating oil from water, aiming at the problems that the whole device and the method which can efficiently remove the suspended matters in the crude oil and separate oil from water are lacked, the conventional single suspended matter removing process has the problems of low production efficiency, easy blockage of filtering facilities or fillers and the like, and the conventional single oil-water separating process cannot process materials containing suspended matters, so that the problems of blockage of separating fillers, mutual entrainment of oil and water phases and the like are caused.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

the invention provides a device for coupling suspended matter removal and oil-water separation, which comprises a homogenizing system and a removing system, wherein the homogenizing system comprises a homogenizing reactor, the middle part of the homogenizing reactor is a through homogenizing bin, the homogenizing bin is a space formed by two porous partition plates, the partition plates divide the space in the homogenizing reactor into three parts, the bottom of the homogenizing reactor is provided with a gas distribution device I, the top of the homogenizing reactor is provided with a gas outlet I, one side of the homogenizing bin is connected with a feeding hole I, and a discharging hole I is arranged on the other side opposite to the feeding hole I and is positioned at the upper part of the homogenizing reactor; the device comprises a material outlet I, a material removing system and a material removing system, wherein the material outlet I is connected with the material removing system, the material removing system comprises a vertical reactor, a sleeve is arranged in the middle of the upper part of the reactor and is an oil removing area, an outer annular area of the sleeve is a suspension removing area, the lower part of the reactor is a water removing area, fiber fillers are filled in the oil removing area, a filler baffle is arranged at the top of the oil removing area, a material inlet II is arranged on the filler baffle and is; the suspension removing area is filled with adsorption filler, and the outer wall of the suspension removing area is provided with a discharge hole III; the bottom of the suspension removing area is provided with a gas distribution device II, and the top of the reactor is provided with a gas outlet II; the water removal area is arranged at the bottom of the vertical reactor and communicated with the oil removal area, oil-water separation filler is filled in the water removal area, and a discharge hole IV is arranged at the bottom of the water removal area.

Further, the homogenizing chamber is a region where the feed material can be homogenized, the homogenizing treatment can be realized by various methods, and the homogenizing chamber can be any one or combination of an ultrasonic reactor, a microwave oscillation reactor, a mechanical stirrer, a magnetic stirrer and the like.

Further, the homogenizing chamber is preferably an ultrasonic reactor because ultrasonic waves have better conductivity in oil and water; the ultrasonic wave generating frequency is generally 20 KHz-100 KHz, and the power density is generally more than or equal to 0.3w/cm²(power density = transmission power (W)/transmission area (cm)²) The signal can be a sinusoidal signal or a pulse signal.

Further, the gas distribution device I and the gas distribution device II are micro-bubble generators, the micro-bubble generators are devices capable of dispersing gas into small-sized bubbles, or can be called as micro-pore bubble generators, membrane tube micro-diffusers, ultra-micro-bubble generators and the like, bubbles with the size of 50 nm-1000 μm, preferably 5 μm-100 μm can be formed, and equipment capable of realizing the functions can be used in the invention. The gas distribution device I and the gas distribution device II have the functions of pushing and accelerating the floating of suspended matters in feeding, and are mainly realized by adopting a pressurized dissolved gas floatation method.

Further, gas outlet I at the top of the homogenizing reactor is connected with a gas distribution device I through a supercharger I, so that the recycling of gas is realized.

Further, the fiber filler in the deoiling area is in any shape, such as a long strip shape, a square shape, a cylindrical shape, a polygonal shape or other regular or irregular shapes; the fiber filler is woven by fiber yarns, and the aperture of the fiber yarns is larger than the diameter of suspended matters in the liquid entering the deoiling area, so that the fiber filler is prevented from being blocked by the suspended matters; the fiber yarn is a composite fiber yarn formed by weaving oleophylic hydrophobic fibers and hydrophilic oleophobic fibers together, wherein the mass ratio of the hydrophilic oleophobic fibers to the oleophylic hydrophobic fibers is 1: 2-1: 20, and preferably 1: 2-1: 8; the oleophylic and hydrophobic fiber filaments are selected from at least one of polyester fiber filaments, nylon fiber filaments, polyurethane fiber filaments, polypropylene fiber filaments, polyacrylonitrile fiber filaments and polyvinyl chloride fiber filaments, and the hydrophilic and oleophobic fiber filaments are selected from natural high molecular polymers with carboxyl, amino or hydroxyl on the main chain or side chain, such as polypropylene fibers, or from materials of which the surface is subjected to hydrophilic and oleophobic treatment; the fiber filler is filled in a mode of overlapping multiple fiber layers, wherein the surface of each fiber layer is provided with a concave-convex structure, and the concave-convex structure can be any one of an X-shaped structure, a V-shaped structure, an 8-shaped structure, an omega-shaped structure, a drop-shaped structure or a diamond-shaped structure.

Furthermore, the suspension removing object area is divided into a plurality of sections in the vertical direction, each two sections are separated by two porous partition plates which are arranged in parallel, and the two porous partition plates which are arranged in parallel are opened on the wall of the reactor to form a discharge hole III of the suspension removing object area. The purpose of the segmentation is to improve the efficiency of removing suspended matters, and after the lower end is blocked, the treated material moves upwards, and the water phase discharged material also gradually moves upwards.

Furthermore, the adsorption filler filled in the suspension removal area is low-density air flotation filler with the filler density of 50kg/m³～900kg/m³Preferably 300kg/m³～600kg/m³(ii) a The filler is made of oleophylic materials or modified oleophylic materials, and is selected from at least one of polyester, polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, acrylic acid and nylon, or is selected from materials of which the surfaces are subjected to oleophylic treatment; the packing may be any shape such as any one type of large-pore honeycomb packing, large-pore wire mesh packing, hollow packing, fabric packing, and corrugated corner packing.

Further, the adsorption filler is in a non-fixed filling state in the suspension removal area; the porosity of the filler is 30% to 95%, preferably 50% to 80%.

Furthermore, the gas outlet II is also connected with a gas distribution device II through a supercharger II, so that the recycling of gas is realized.

Further, the supercharger i and the supercharger ii are more specifically selected from one or a combination of a plurality of compressors, a solution pump and a high-pressure jet pump.

Furthermore, the oil-water separation filler in the water removal area is divided into two sections, the upper section is a coalescent filler, and the coalescent filler is a filler which can coalesce water drops in the oil phase; more specifically, the fabric is woven by hydrophilic oleophobic fibers and oleophilic hydrophobic fibers according to the mass ratio of 2: 1-20: 1, preferably 2: 1-8: 1; the lower section is provided with corrugated plate filler for accelerating the settling separation of water drops in an oil phase; the two-stage combination achieves better dewatering from the oil phase. The hydrophilic oleophobic fiber and the oleophilic hydrophobic fiber are selected as described above.

The technical purpose of the second aspect of the invention is to provide a method for performing suspended matter removal and oil-water separation coupling treatment by using the device, which comprises the following steps: the method comprises the following steps that materials to be treated enter a homogenizing bin from a feeding hole I, a gas distribution device I is used for feeding gas, under the action of the homogenizing bin and bubbles, suspended matters in the materials to be treated are homogenized and enter a deoiling area from a discharging hole I, under the action of fiber fillers, a water phase and an oil phase are subjected to preliminary separation, the water phase serving as a light phase is on the upper side, the oil phase serving as a heavy phase is on the lower side and enters a dewatering area, the water phase carries the suspended matters and enters the zone for separating the suspended matters from a discharging hole II, and the suspended matters are removed under the action of the bubbles introduced by an adsorption filler and gas distribution device II and discharged from; and the oil phase enters the water removal area and then is separated under the action of an oil-water separation filler, and the oil phase at the bottom is discharged from a discharge hole IV.

It should be understood by those skilled in the art that, firstly, most suspended matters in crude oil or sewage are irregular in shape and different in size, and are mostly in the shape of large kelp, so that no matter the suspended matters are removed by adopting the prior art methods such as filtration, membrane treatment, adsorption, air flotation and the like, the problems that equipment is easy to hang and block, the equipment is not easy to clean and long-period operation cannot be maintained exist in the technologies. Secondly, in the process of removing the suspended matters, because the suspended matters have low density, the suspended matters exist in a water phase in heavy oil products (oil products with density larger than water), the fed materials are oil-water two-phase, if the conventional suspended matters are removed, the oil-water two-phase fed materials need to enter the removing equipment, the problems of low suspended matters removing efficiency, oil carrying of the suspended matters and the like are caused, if the prior art is adopted for oil-water separation and then suspended matters removal, the problems that the suspended matters block the oil-water separating equipment and the suspended matters can not run for a long period exist, so that the invention aims at the problems that the water phase carrying the suspended matters is separated from the oil phase by the fiber filler, the suspended matters can not block the oil-water separating filler, then the water phase of the oil-water separation is introduced into a suspended matters removing area for removing the suspended matters, the oil phase of the oil-water separation, the two processes are not influenced by each other, and the whole efficiency of suspension removal and oil-water separation is high.

Further, the material to be treated is selected from any one of heavy inferior raw oil, heavy dirty oil and coal tar, or is an oil product obtained after crude oil is electrically desalted or cut oily sewage.

Furthermore, the material to be treated needs to be injected with water, and the water injection amount is 3-20% of the oil product mass.

Furthermore, the size of the suspension after being homogenized is controlled by controlling the acting force of the homogenizing bin, the air inflow of the air distribution device I and the size of air bubbles, so that the diameter of the suspension is smaller than the pore diameter of the fiber filler in the deoiling area, and the fiber filler cannot be blocked.

Further, the gas introduced into the gas distribution device I and the gas distribution device II is selected from nitrogen, air or inert gas, preferably nitrogen.

Further, the volume ratio (Nm) of the aeration of the gas distribution unit I to the feed of the material to be treated³/h：m³H) is 1:1 to 500:1, preferably 10:1 to 100: 1; volume ratio (Nm) of ventilation of gas distribution apparatus II to raw material to be treated³/h：m³H) is 100:1 to 1000:1, preferably 100:1 to 500: 1; wherein the gas volume is based on the gas volume in the standard state.

Further, the operation conditions of the homogenizing system are as follows: the temperature is normal temperature to 200 ℃, preferably 60 to 120 ℃; the pressure is 0.3-10.0 MPa, preferably 0.5-2.0 MPa; the operating conditions of the removal system were as follows: the temperature is normal temperature to 150 ℃, preferably 30 to 80 ℃; the pressure is 0.1 to 10.0MPa, preferably 0.1 to 1.0 MPa.

Compared with the prior art, the invention has the following advantages:

(1) in the device and the method, firstly, a homogenizing system is adopted to homogenize suspended matters, and suspended matters which are irregular in shape, different in size and more in the shape of large kelp are homogenized into suspended matters with smaller shapes and sizes, so that the problems of low production efficiency, easiness in filler blockage and the like in the subsequent suspended matter removal process are solved, and the blockage and the use effect of the oil-water separation filler in the integrated oil-water separation method are not influenced.

(2) The suspended matter removing process and the oil-water separating process are coupled in a reactor, the water phase and the oil phase of the suspended matter carried by the fiber filler are firstly utilized for preliminary separation, and then the suspended matter is removed and the oil-water is deeply separated; the oil-water separation is carried out while removing the suspended matters, the two processes are not affected with each other, and the overall efficiency of removing the suspended matters and the oil-water separation is high.

(3) In the process of coupling the suspended matter removal and the oil-water separation, a coupling equipment structure is arranged by utilizing the characteristics and the requirements of the suspended matter removal and the oil-water separation process, so that the material flow direction in the oil-water separation process is from top to bottom, and the liquid drop sedimentation separation in the oil-water separation process is facilitated; when the water phase is naturally introduced into the process of removing the suspended matters, the material flow direction is from bottom to top, and the air-float gas is introduced into the lower part of the material flow direction to push and carry the suspended matters to float upwards, so that the pushing of the suspended matters to float upwards and the removal of the suspended matters are facilitated.

In a word, the invention provides a device and a method for efficiently removing suspended matters in crude oil and separating oil from water, and the device and the method have the advantages of high suspended matter removing effect, high overall production efficiency of the oil-water separation process, good treatment effect, no blockage in the two processes and greatly prolonged operation period.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a device for coupling suspended matter removal and oil-water separation in example 1;

the system comprises a homogenizing reactor 1, a feeding port I, a homogenizing bin 3, a micro-bubble generator I, a discharging port I, a gas outlet I, a pressurizing machine I, a vertical reactor 8, a feeding port II, a fiber filler 10, a fiber filler baffle 11, a discharging port II, a adsorbing filler 13, a porous partition plate 14, an arc baffle 15, a discharging port III, a discharging port 17, a micro-bubble generator II, a gas outlet 19, a pressurizing machine II, a coalescing filler 20, a corrugated plate filler 21 and a discharging port IV 22.

Detailed Description

The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

A device for coupling suspended matter removal and oil-water separation comprises a homogenizing system and a removing system, and is shown in figure 1:

the homogenizing system comprises a homogenizing reactor 1, a through homogenizing bin 3 is arranged in the middle of the homogenizing reactor 1, the homogenizing bin 3 is a space formed by two porous partition plates, and the homogenizing bin 3 is an ultrasonic reactor and is externally connected with a power supply; the space in the homogenizing reactor 1 is divided into three parts by the partition plates, a micro-bubble generator I4 is arranged at the bottom of the homogenizing reactor 1, a gas outlet I6 is arranged at the top of the homogenizing reactor, the gas outlet I6 is connected with the micro-bubble generator I4 through a supercharger I7, one side of the homogenizing bin 3 is connected with a feeding port I2, and a discharging port I5 is arranged at the other side opposite to the feeding port I1 and is positioned at the upper part of the homogenizing reactor 1;

the discharge port I5 is connected with a removal system, the removal system comprises a vertical reactor 8, a sleeve is arranged in the middle of the upper portion of the vertical reactor 8 and is an oil removal area, a suspension removal area is arranged in an outer annular area of the sleeve, a water removal area is arranged at the lower portion of the vertical reactor 8, fiber filler 10 is filled in the oil removal area, and the fiber filler 10 is formed by weaving polyurethane fiber yarns (oleophylic hydrophobic fibers) and polypropylene fiber yarns (hydrophilic oleophobic fibers) into cylindrical fibers with X-shaped surfaces according to the proportion of 4:1 and stacking the fibers; the top of the deoiling area is provided with a fiber filler baffle 11, a feed inlet II 9 is arranged on the fiber filler baffle and is connected with a discharge outlet I5, and the bottom of the deoiling area is provided with a discharge outlet II 12 which is communicated with a suspension removing area;

the suspension removing object area is divided into a plurality of sections in the vertical direction, each two sections are separated by two porous partition plates 14 arranged in parallel, the two porous partition plates 14 arranged in parallel are opened on the wall of the reactor to form a discharge hole III 16 of the suspension removing object area, an adsorption filler 13 is filled between the porous partition plates 14, and the adsorption filler 13 is sealed at the uppermost end through an arc-shaped baffle plate 15; the adsorption packing 13 has a density of 600kg/m³Macroporous cellular polypropylene filler; the bottom in taking off the suspension district sets up microbubble generator II 17, the top of vertical reactor 8 sets up gas outlet II 18, and it connects the fine gas through booster compressor II 19The bubble generator II 17 is used for realizing gas circulation; the dewatering area is arranged at the bottom of the vertical reactor 8 and is communicated with the deoiling area, the upper section in the dewatering area is filled with coalescent filler 20 which is a woven layer with omega-shaped surface pattern type woven by polyurethane fiber (oleophylic hydrophobic fiber) and polypropylene fiber (hydrophilic oleophobic fiber) according to the proportion of 1:4, the lower section is provided with corrugated plate filler 21, and the bottom is provided with a discharge port IV 22.

Example 2

The apparatus of example 1 was used to separate oil from water by removing suspended matter from heavy contaminated oil. Table 1 shows the properties of the raw materials to be treated.

TABLE 1

With in table 1 pending with pending material get into homogeneity storehouse 3 in the homogeneity reactor 1 by feed inlet I2, the bottom of homogeneity reactor 1 sets up microbubble generator I4, and the top of homogeneity reactor 1 sets up gas outlet I6, and gas outlet I6 passes through booster I7 and connects microbubble generator I4, feed inlet I2 is connected to one side of homogeneity storehouse 3, and discharge gate I5 sets up in the opposite side relative with feed inlet I1, is located the upper portion of homogeneity reactor 1. Under the action of the homogenizing bin 3 and the microbubbles, suspended matters in the materials to be treated entering the homogenizing bin 3 are homogenized, the homogenized materials enter a deoiling area of the vertical reactor 8 from a discharge port I5, under the action of a fiber filler 10 filled in the deoiling area, a water phase and an oil phase are subjected to preliminary separation, a light phase after oil-water separation flows to a region for removing the suspended matters from a discharge port II 12 arranged at the bottom of the deoiling area, and the light phase moves from bottom to top under the action of bubbles introduced by an adsorption filler 13 and a microbubble generator II 17 to remove the suspended matters and is discharged from a discharge port III 16; after the oil phase enters the dewatering area, coalescence and separation are realized under the action of coalescence fillers 21 and corrugated plate fillers 21, and the oil phase at the bottom is discharged from a discharge port IV 22.

Volume ratio (Nm) of ventilation of microbubble generator I4 to feed of material to be treated³/h：m³H) is80: 1; volume ratio (Nm) of ventilation of microbubble generator II 17 to raw material to be treated³/h：m³H) is 200: 1; wherein the gas volume is based on the gas volume in the standard state.

The operating conditions of the homogenization system are as follows: the temperature is 110 ℃, and the pressure is 1.6 MPa; the operating conditions of the removal system were as follows: the temperature is 70 ℃; the pressure was 1.0 MPa.

After the treatment by the method, the removal of suspended matters in the material to be treated and the oil-water separation are simultaneously completed, the salt content in the oil phase is 2.75-2.96 mg/L, the water content is 4900-5100 ppm, the oil content in the water phase is 0.35-0.45 wt%, the suspended matters in the water phase and the oil phase cannot be seen, and are respectively 0.0034% and 0.0012% by measurement, and the blockage phenomenon does not occur to each packing layer in the operation process of the device.

Example 3

The apparatus of example 1 was used to separate oil from water in heavy crude oil. Table 2 shows the properties of the raw materials to be treated.

TABLE 2

With in table 1 pending with pending material get into homogeneity storehouse 3 in the homogeneity reactor 1 by feed inlet I2, the bottom of homogeneity reactor 1 sets up microbubble generator I4, and the top of homogeneity reactor 1 sets up gas outlet I6, and gas outlet I6 passes through booster I7 and connects microbubble generator I4, feed inlet I2 is connected to one side of homogeneity storehouse 3, and discharge gate I5 sets up in the opposite side relative with feed inlet I1, is located the upper portion of homogeneity reactor 1. Under the action of the homogenizing bin 3 and the microbubbles, suspended matters in the materials to be treated entering the homogenizing bin 3 are homogenized, the homogenized materials enter a deoiling area of the vertical reactor 8 from a discharge port I5, under the action of a fiber filler 10 filled in the deoiling area, a water phase and an oil phase are subjected to preliminary separation, a light phase after oil-water separation flows to a region for removing the suspended matters from a discharge port II 12 arranged at the bottom of the deoiling area, and the light phase moves from bottom to top under the action of bubbles introduced by an adsorption filler 13 and a microbubble generator II 17 to remove the suspended matters and is discharged from a discharge port III 16; after the oil phase enters the dewatering area, coalescence and separation are realized under the action of coalescence fillers 21 and corrugated plate fillers 21, and the oil phase at the bottom is discharged from a discharge port IV 22.

Volume ratio (Nm) of ventilation of microbubble generator I4 to feed of material to be treated³/h：m³H) is 50: 1; volume ratio (Nm) of ventilation of microbubble generator II 17 to raw material to be treated³/h：m³H) 450: 1; wherein the gas volume is based on the gas volume in the standard state.

The operating conditions of the homogenization system are as follows: the temperature is 102 ℃, and the pressure is 1.2 MPa; the operating conditions of the removal system were as follows: the temperature is 80 ℃; the pressure was 0.8 MPa.

After the treatment by the method, the removal of suspended matters in the materials to be treated and the separation of oil and water are simultaneously finished, the salt content in the oil phase is 2.65-2.88 mg/L, the water content is 4500-5000 ppm, the oil content in the water phase is 0.27-0.29 wt%, the suspended matters in the water phase and the oil phase cannot be seen, and are respectively 0.0027% and 0.0010% after measurement, and all packing layers are not blocked in the operation process of the device.