阅读说明：本技术 急冷干法除尘系统 (Quenching dry-method dust removal system ) 是由 吴世均 于 2021-09-23 设计创作，主要内容包括：本发明公开了急冷干法除尘系统,包括急冷塔,急冷塔上端为烟气输入口并与自余热锅炉设备烟气输出口相连,在急冷塔内部上端且对应烟气输入口设置有冷却喷淋装置；急冷塔下端为烟气输出端并与干法反应器下端相连,干法反应器上端为烟气输出端并与布袋除尘器输入端相连,且布袋除尘器输出端与湿法洗涤塔输入端相连；还包括消石灰中间仓和活性炭仓,消石灰中间仓下端的消石灰输出口与干法反应器下端的消石灰输入口之间以及活性炭仓下端的活性炭输出口与干法反应器下端的活性炭输入口之间各自通过消石灰输送装置和活性炭输送装置相连。本发明具有设计更加合理,能够提高烟气除尘质量,能够更好的对烟气进行净化以达到排放要求的特点。(The invention discloses a quenching dry dedusting system, which comprises a quenching tower, wherein the upper end of the quenching tower is a flue gas input port and is connected with a flue gas output port of waste heat boiler equipment; the lower end of the quenching tower is a flue gas output end and is connected with the lower end of the dry-method reactor, the upper end of the dry-method reactor is a flue gas output end and is connected with the input end of a bag-type dust remover, and the output end of the bag-type dust remover is connected with the input end of the wet-method washing tower; the device also comprises a slaked lime intermediate bin and an activated carbon bin, wherein a slaked lime output port at the lower end of the slaked lime intermediate bin is connected with a slaked lime input port at the lower end of the dry-method reactor, and an activated carbon output port at the lower end of the activated carbon bin is connected with an activated carbon input port at the lower end of the dry-method reactor through a slaked lime conveying device and an activated carbon conveying device respectively. The invention has the characteristics of more reasonable design, improved flue gas dedusting quality and better purification of flue gas to meet the emission requirement.)

1. The quenching dry dedusting system comprises a quenching tower, wherein the upper end of the quenching tower is a flue gas input port and is connected with a flue gas output port of waste heat boiler equipment, and a cooling spray device is arranged at the upper end inside the quenching tower and corresponds to the flue gas input port; the lower end of the quenching tower is a flue gas output end and is connected with the lower end of the dry-method reactor, the upper end of the dry-method reactor is a flue gas output end and is connected with the input end of a bag-type dust remover, and the output end of the bag-type dust remover is connected with the input end of the wet-method washing tower; the device is characterized by also comprising a slaked lime intermediate bin and an activated carbon bin, wherein a slaked lime output port at the lower end of the slaked lime intermediate bin is connected with a slaked lime input port at the lower end of the dry-method reactor, and an activated carbon output port at the lower end of the activated carbon bin is connected with an activated carbon input port at the lower end of the dry-method reactor through a slaked lime conveying device and an activated carbon conveying device respectively.

2. The quenching dry dedusting system of claim 1, characterized in that: the cooling spray device comprises a main quenching spray gun which is horizontally arranged, and the spray end of the main quenching spray gun is over against and is positioned below the flue gas input port at the upper end of the quenching tower; the device also comprises a first auxiliary quenching spray gun and a second auxiliary quenching spray gun which are paired left and right and are horizontally positioned below the main quenching spray gun, and the spraying ends of the first auxiliary quenching spray gun and the second auxiliary quenching spray gun are oppositely arranged; the third auxiliary quenching spray gun is vertically arranged, the injection end of the third auxiliary quenching spray gun vertically extends to the lower part of the main quenching spray gun, and the third auxiliary quenching spray gun is horizontally positioned at the outer side position of the injection end of the main quenching spray gun; the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun are respectively connected with the water supply part structure.

3. The quenching dry dedusting system of claim 2, characterized in that: the water supply part structure comprises an emergency water spraying tank, the upper end of the emergency water spraying tank is provided with a water inlet and is connected with the self-synthesis water pump through a water conveying pipeline; the upper end of the emergency water spraying tank is also provided with a compressed air inlet and is connected with the self-compressed air buffer tank through a compressed air input pipeline; the lower end of the emergency spray tank is provided with a water outlet and is respectively connected with the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun through water outlet pipelines.

4. The quenching dry dedusting system of claim 3, characterized in that: the emergency spray tank is characterized in that a water outlet main pipeline is connected to a water outlet at the lower end of the emergency spray tank, a first branch pipeline, a second branch pipeline, a third branch pipeline and a fourth branch pipeline are connected to the water outlet main pipeline at intervals along the length direction of the water outlet main pipeline, and the far ends of the first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline are respectively connected with the cooling water input ends of a first auxiliary quenching spray gun, a second auxiliary quenching spray gun, a third auxiliary quenching spray gun and a main quenching spray gun.

5. The quenching dry dedusting system of claim 4, characterized in that: still include the quench water tank, quench water tank input is continuous with from the synthetic water pump and from the district normal water supply structure through first moisturizing pipeline and second moisturizing pipeline respectively, and quench water tank output passes through the water supply connection structure and links to each other with the outlet main pipe way.

6. The quenching dry dedusting system of claim 5, characterized in that: still include from the adsorption circulation pump, from the adsorption circulation pump output with quench water tank input links to each other, and is provided with the flange stop valve between from adsorption circulation pump output and quench water tank input.

7. The quenching dry dedusting system of claim 1, characterized in that: a flue gas circulating pipeline is connected between the flue gas output end and the flue gas input end of the bag-type dust collector, and a hot air circulating fan and a hot air heater are arranged on the flue gas circulating pipeline; and two ends of the flue gas circulating pipeline are respectively provided with an 8-shaped blind plate.

8. The quenching dry dedusting system of claim 7, characterized in that: the gas storage tank for the bag-type dust collector is connected with the self-instrument gas storage tank, the output ends of the gas storage tanks for the bag-type dust collector are respectively connected with the gas interface at the upper end of the bag-type dust collector, and the output ends of the gas storage tanks for the bag-type dust collector are also respectively connected with the air cannon at the lower end of the bag-type dust collector.

9. The quenching dry dedusting system of claim 1, characterized in that: a slaked lime bin is arranged above the slaked lime intermediate bin, and the lower end of the slaked lime bin is provided with an output port and is connected with the upper end of the slaked lime intermediate bin; and the air inlet at the upper end of the slaked lime bin and the air inlet at the upper end of the activated carbon bin are respectively connected with the output end of the meter air storage tank.

10. The quenching dry dedusting system of claim 9, characterized in that: the slaked lime conveying device comprises a first flange pipe which is horizontally arranged, a slaked lime output port at the lower end of the slaked lime intermediate bin is communicated with the middle of the first flange pipe, one end of the first flange pipe is connected with the slaked lime input port at the lower end of the dry process reactor through a slaked lime conveying pipeline, the other end of the first flange pipe is connected with two first mounting pipelines, and slaked lime conveying fans are respectively connected and arranged at the outer ends of the two first mounting pipelines.

Technical Field

The invention relates to the technical field of dust removal, in particular to a quenching dry-method dust removal system.

Background

In industrial production, a large amount of flue gas can be generated in the production and operation processes of boiler equipment, a large amount of harmful substances (including sulfur dioxide) are carried in the flue gas, and in industrial dust removal, the sulfur dioxide in the flue gas is mostly reduced by a limestone-gypsum wet method. The method has the defects of high running power consumption, low reuse rate of water resources and less popularization and application because the desulfurization wastewater generated by the outward discharge can be discharged after further treatment.

In the existing dust removal system, Chinese patent (CN 202823149U) discloses a semi-dry desulfurization dust removal device for cloth bag dust removal; chinese patent (CN 207507256U) discloses a semi-dry desulfurization control system and a semi-dry desulfurization and dust removal working system. However, the system has the following problems that 1, the discharged smoke has pungent peculiar smell and cannot be directly discharged, 2, the smoke has high dust content and cannot well and directly meet the national discharge requirement (100mg/m 3); 3, the dust content is high, the abrasion is large, the maintenance workload is large, and the dust on the fan blade is large, so that the service life of equipment such as a fan is reduced.

Therefore, the technical personnel in the field strive to develop a quenching dry dedusting system which has more reasonable design, can improve the dedusting quality of the flue gas and can better purify the flue gas so as to meet the emission requirement.

Disclosure of Invention

In view of the above defects in the prior art, the technical problem to be solved by the present invention is how to provide a quenching dry dedusting system which has a more reasonable design, can improve the dedusting quality of flue gas, and can better purify flue gas to meet emission requirements.

In order to achieve the aim, the invention provides a quenching dry dedusting system which comprises a quenching tower, wherein the upper end of the quenching tower is a flue gas input port and is connected with a flue gas output port of waste heat boiler equipment; the lower end of the quenching tower is a flue gas output end and is connected with the lower end of the dry-method reactor, the upper end of the dry-method reactor is a flue gas output end and is connected with the input end of a bag-type dust remover, and the output end of the bag-type dust remover is connected with the input end of the wet-method washing tower; the device is characterized by also comprising a slaked lime intermediate bin and an activated carbon bin, wherein a slaked lime output port at the lower end of the slaked lime intermediate bin is connected with a slaked lime input port at the lower end of the dry-method reactor, and an activated carbon output port at the lower end of the activated carbon bin is connected with an activated carbon input port at the lower end of the dry-method reactor through a slaked lime conveying device and an activated carbon conveying device respectively.

Therefore, in the system, the flue gas is output from the flue gas output port of the waste heat boiler equipment and enters from the flue gas input port at the upper end of the quenching tower, the flue gas moves from top to bottom in the quenching tower, and the upper end of the quenching tower is cooled by the cooling spray device. And then the gas is output from the lower end of the quenching tower and enters a dry reactor, is treated by the dry reactor, then enters a bag-type dust remover for dust removal treatment, and finally is output to a wet washing tower. In the above-mentioned system, when the flue gas is handled in dry process reactor, lime hydrate and active carbon are carried to the dry process reactor through lime hydrate conveyor and active carbon conveyor respectively in lime hydrate intermediate bin and active carbon storehouse, wherein, lime hydrate can react and get rid of harmful substance such as sulfur dioxide in the flue gas effectively with the flue gas, active carbon can adsorb the waste gas in the flue gas, also can adsorb the sulfur dioxide in the flue gas once more, make behind above-mentioned system processing, can better handle the sulfur dioxide in the flue gas, can improve the flue gas dust removal quality, can be better purify the flue gas in order to reach emission requirement.

As optimization, the cooling spray device comprises a main quenching spray gun which is horizontally arranged, and the spray end of the main quenching spray gun is over against and is positioned below a flue gas input port at the upper end of the quenching tower; the device also comprises a first auxiliary quenching spray gun and a second auxiliary quenching spray gun which are paired left and right and are horizontally positioned below the main quenching spray gun, and the spraying ends of the first auxiliary quenching spray gun and the second auxiliary quenching spray gun are oppositely arranged; the third auxiliary quenching spray gun is vertically arranged, the injection end of the third auxiliary quenching spray gun vertically extends to the lower part of the main quenching spray gun, and the third auxiliary quenching spray gun is horizontally positioned at the outer side position of the injection end of the main quenching spray gun; the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun are respectively connected with the water supply part structure.

Like this, through setting up main rapid cooling spray gun, first supplementary rapid cooling spray gun, the supplementary rapid cooling spray gun of second and the supplementary rapid cooling spray gun of third to spatial layout between the four can cool down the flue gas of quench tower upper end flue gas input better, for follow-up flue gas treatment is ready. And through setting up a plurality of spray guns, also make things convenient for the adjustment more with the temperature of control flue gas.

As optimization, the water supply part structure comprises an emergency water spraying tank, wherein the upper end of the emergency water spraying tank is provided with a water inlet and is connected with a self-synthesis water pump through a water conveying pipeline; the upper end of the emergency water spraying tank is also provided with a compressed air inlet and is connected with the self-compressed air buffer tank through a compressed air input pipeline; the lower end of the emergency spray tank is provided with a water outlet and is respectively connected with the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun through water outlet pipelines.

Therefore, the water supply part is simpler in structure and more reasonable in design. The internal pressure of the emergency water spray tank is changed by injecting compressed air into the emergency water spray tank, so that high-pressure water is supplied to the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun, and the flue gas in the quenching tower is cooled.

Furthermore, a flange ball valve and a flange check valve are respectively arranged on the water conveying pipeline and the compressed air input pipeline. Like this, through set up flange ball valve and flange check valve on conduit and compressed air input pipeline respectively, can conveniently control water supply and air feed more.

As optimization, a main water outlet pipe is connected to a water outlet at the lower end of the emergency spray tank, a first branch pipe, a second branch pipe, a third branch pipe and a fourth branch pipe are connected to the main water outlet pipe at intervals along the length direction of the main water outlet pipe, and the far ends of the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected with the cooling water input ends of a first auxiliary quenching spray gun, a second auxiliary quenching spray gun, a third auxiliary quenching spray gun and a main quenching spray gun.

Like this, through setting up first branch road pipeline, second branch road pipeline, third branch road pipeline and fourth branch road pipeline and supplying water to first supplementary rapid cooling spray gun, the supplementary rapid cooling spray gun of second, the supplementary rapid cooling spray gun of third and main rapid cooling spray gun respectively, influence each other is littleer, and the design is more reasonable.

Furthermore, a flange gate valve and a pneumatic valve are arranged at one end, close to the emergency water spraying tank, of the main water outlet pipeline. Therefore, the on-off of the main water outlet pipeline can be controlled more conveniently.

Furthermore, a flange check valve and a flange stop valve are arranged between the first branch pipeline and the second branch pipeline on the main water outlet pipeline. Therefore, water supply can be facilitated, and water supply control is realized.

Furthermore, flange stop valves are respectively arranged on the second branch pipeline, the third branch pipeline and the fourth branch pipeline.

Furthermore, the distal ends of the first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline at least have partial length sections which are hose structures. Thus, the installation and the arrangement are more convenient.

As optimization, the system further comprises a quenching water tank, wherein the input end of the quenching water tank is respectively connected with the self-synthesis water pump and the reclaimed water supply structure in the boundary region through a first water replenishing pipeline and a second water replenishing pipeline, and the output end of the quenching water tank is connected with the water outlet main pipeline through a water supply connecting structure.

Therefore, the quenching water tank serves as a water supply source, water can be supplied to the spray gun, and the design is more reliable.

Furthermore, the water supply connecting structure is connected with a cooling water output pipeline at the output end of the quenching water tank in pairs,

a flange gate valve, a pipeline Y-shaped filter, a cooling water pump, a flange check valve and a flange gate valve are sequentially arranged on the two cooling water output pipelines in pairs along the flowing direction of liquid in the cooling water output pipelines; and the far ends of the two cooling water output pipelines paired pairwise are collected and connected together to form an output port and are used for being connected with a main water outlet pipeline. Like this, water supply connection structure is simpler, is provided with reserve water supply route for whole work is more reliable.

Further, be provided with flange gate valve, solenoid valve and flange gate valve in order on first moisturizing pipeline, still be provided with first moisturizing branch road pipeline, two flange gate valve outside positions on first moisturizing pipeline are connected separately at first moisturizing branch road pipeline both ends, and are provided with the flange stop valve on first moisturizing branch road pipeline.

Thus, the structure design is simpler, and the control can be more convenient.

Further, be provided with flanged gate valve and solenoid valve in order on second moisturizing pipeline, still be provided with second moisturizing branch road pipeline, second moisturizing branch road pipeline both ends are connected respectively and are put on second moisturizing pipeline flanged gate valve and solenoid valve outside, and are provided with the flange stop valve on second moisturizing branch road pipeline.

Thus, the structure design is simpler, and the control can be more convenient.

And as optimization, the system also comprises a self-adsorption circulating pump, the output end of the self-adsorption circulating pump is connected with the input end of the quenching water tank, and a flange stop valve is arranged between the output end of the self-adsorption circulating pump and the input end of the quenching water tank.

Thus, the self-adsorption circulating pump can supply the quenching water tank with alkali liquor. The supplementary alkali liquor makes the liquid cooled by the flue gas have alkalinity, and can better neutralize the flue gas, thereby being more convenient for subsequent treatment and discharge.

As optimization, a flue gas circulating pipeline is connected and arranged between the flue gas output end and the flue gas input end of the bag-type dust collector, and a hot air circulating fan and a hot air heater are arranged on the flue gas circulating pipeline; and two ends of the flue gas circulating pipeline are respectively provided with an 8-shaped blind plate.

Therefore, unqualified flue gas at the output end of the bag-type dust collector can circularly enter the input end again and is treated again, and the dust collection quality can be better improved. The hot air circulating fan and the hot air heater arranged on the flue gas circulating pipeline can convey and heat the flue gas, so that the flue gas can be better ensured to be at proper temperature.

Furthermore, the liquid input end of the heated air circulation fan is connected with the output end of the self-cooling circulation water pump, and the liquid output end of the heated air circulation fan is connected with the input end of the circulation cooling tower. Thus, the hot air circulating fan can be cooled completely and the internal solid waste can be discharged to the circulating cooling tower for treatment.

Further, a flange stop valve is arranged between the liquid input end of the hot air circulating fan and the output end of the self-cooling circulating water pump; and a flange gate valve is arranged between the liquid output end of the hot air circulating fan and the input end of the circulating cooling tower. The design is more reasonable, and the control can be more convenient.

The air storage tank for the bag-type dust collector is further included, the input end of the air storage tank for the bag-type dust collector is connected with the self-instrument air storage tank, the output ends of the air storage tank for the bag-type dust collector are respectively connected with the air interface at the upper end of the bag-type dust collector, and the output ends of the air storage tank for the bag-type dust collector are respectively connected with the air cannons at the lower end of the bag-type dust collector.

Therefore, the gas storage tank for the bag-type dust collector can better provide gas for the bag-type dust collector, and the bag-type dust collector can complete work more conveniently.

Furthermore, the lower ends of the quenching tower and the bag-type dust remover are respectively provided with an ash box. This enables dust to be collected and centrally disposed of.

Further, the lower extreme of quench tower has the vertical chimney that sets up downwards of one end, and vertical in pairs is provided with the pneumatic valve on the chimney, and the inlet end of pneumatic valve with from being provided with the control trachea between the instrument gas storage tank separately, be provided with internal thread ball valve and solenoid valve on the control trachea separately. Thus, the dust collection and discharge at the lower end of the quenching tower can be more conveniently controlled.

As optimization, a slaked lime bin is arranged above the slaked lime intermediate bin, and the lower end of the slaked lime bin is provided with an output port and is connected with the upper end of the slaked lime intermediate bin; and the air inlet at the upper end of the slaked lime bin and the air inlet at the upper end of the activated carbon bin are respectively connected with the output end of the meter air storage tank.

Therefore, the lime hydrate and the active carbon can be more conveniently removed and conveyed to the dry reactor for utilization.

Furthermore, the upper ends of the slaked lime bin and the activated carbon bin are respectively provided with a supply port and are respectively connected with an external slaked lime supply structure and an external activated carbon supply device.

Preferably, the slaked lime conveying device comprises a first flange pipe which is horizontally arranged, a slaked lime output port at the lower end of the slaked lime intermediate bin is communicated with the middle of the first flange pipe, one end of the first flange pipe is connected with the slaked lime input port at the lower end of the dry-process reactor through a slaked lime conveying pipeline, the other end of the first flange pipe is connected with two first mounting pipelines, and slaked lime conveying fans are respectively connected and arranged at the outer ends of the two first mounting pipelines.

Like this, the lime hydrate conveyor structure is simpler, and the design is more reasonable, can be better carry the lime hydrate to dry process reactor.

Further, a butterfly valve is respectively arranged on the first installation pipeline.

Further, activated carbon conveyor includes the second flange pipe that the level set up, and makes activated carbon storehouse lower extreme active carbon delivery outlet and second flange pipe middle part be the intercommunication setting, links to each other through activated carbon pipeline between second flange pipe one end and the active carbon input port of dry process reactor lower extreme, is connected with second installation pipeline at the second flange pipe other end, links up respectively in second installation pipeline outer end and is provided with activated carbon conveyor fan.

Like this, active carbon conveyor structure is simpler, and the design is more reasonable, can be better carry the dry process reactor with active carbon.

Further, a butterfly valve is respectively arranged on the second mounting pipeline.

Further, the dry process reactor includes that outside whole is the shell body of tubulose and vertical design of circle, and the shell body lower extreme is buckled downwards towards quench tower one side slope and is linked to each other with the flue gas output of quench tower lower extreme, buckles downwards after shell body upper end level is buckled and is the U-shaped structure of establishing of falling to the distal end level is again buckled towards the direction of keeping away from the quench tower and is extended the formation flue gas delivery outlet. Like this, the design of dry process reactor is more reasonable, and the U-shaped can be better retrain the flue gas of inside for the flue gas that reaches the requirement just can pass through, and has still increased reaction length, makes the reaction time of flue gas and slaked lime and active carbon longer.

Furthermore, eight bag-type dust collectors are connected in series.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of a position a in fig. 1.

FIG. 3 is a schematic view of the structure of a quenching tower and a dry reactor section in FIG. 1

Fig. 4 is a schematic structural view of a slaked lime intermediate bin and an activated carbon bin portion in fig. 1.

Fig. 5 is a partially enlarged schematic view of a B position in fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 5, the quenching dry dedusting system comprises a quenching tower 1, wherein the upper end of the quenching tower is a flue gas inlet and is connected with a flue gas outlet of a waste heat boiler device 2, and a cooling spray device 3 is arranged at the upper end inside the quenching tower and corresponds to the flue gas inlet; the lower end of the quenching tower is a flue gas output end and is connected with the lower end of the dry-method reactor 4, the upper end of the dry-method reactor is a flue gas output end and is connected with the input end of a bag-type dust collector 5, and the output end of the bag-type dust collector is connected with the input end of a wet-method washing tower 6; the device also comprises a slaked lime intermediate bin 7 and an activated carbon bin 8, wherein a slaked lime output port at the lower end of the slaked lime intermediate bin is connected with a slaked lime input port at the lower end of the dry-method reactor, and an activated carbon output port at the lower end of the activated carbon bin is connected with an activated carbon input port at the lower end of the dry-method reactor through a slaked lime conveying device and an activated carbon conveying device respectively.

Therefore, in the system, the flue gas is output from the flue gas output port of the waste heat boiler equipment and enters from the flue gas input port at the upper end of the quenching tower, the flue gas moves from top to bottom in the quenching tower, and the upper end of the quenching tower is cooled by the cooling spray device. And then the gas is output from the lower end of the quenching tower and enters a dry reactor, is treated by the dry reactor, then enters a bag-type dust remover for dust removal treatment, and finally is output to a wet washing tower. In the above-mentioned system, when the flue gas is handled in dry process reactor, lime hydrate and active carbon are carried to the dry process reactor through lime hydrate conveyor and active carbon conveyor respectively in lime hydrate intermediate bin and active carbon storehouse, wherein, lime hydrate can react and get rid of harmful substance such as sulfur dioxide in the flue gas effectively with the flue gas, active carbon can adsorb the waste gas in the flue gas, also can adsorb the sulfur dioxide in the flue gas once more, make behind above-mentioned system processing, can better handle the sulfur dioxide in the flue gas, can improve the flue gas dust removal quality, can be better purify the flue gas in order to reach emission requirement.

In the specific embodiment, the cooling spray device 3 comprises a main quenching spray gun 9 which is horizontally arranged, and the injection end of the main quenching spray gun is over against and is positioned below the flue gas input port at the upper end of the quenching tower; the device also comprises a first auxiliary quenching spray gun 10 and a second auxiliary quenching spray gun 11 which are paired left and right and are horizontally positioned below the main quenching spray gun, and the spraying ends of the first auxiliary quenching spray gun and the second auxiliary quenching spray gun are oppositely arranged; the device also comprises a third auxiliary quenching spray gun 12 which is vertically arranged, wherein the injection end of the third auxiliary quenching spray gun vertically extends to the lower part of the main quenching spray gun, and the third auxiliary quenching spray gun is horizontally positioned at the outer side position of the injection end of the main quenching spray gun; the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun are respectively connected with the water supply part structure.

Like this, through setting up main rapid cooling spray gun, first supplementary rapid cooling spray gun, the supplementary rapid cooling spray gun of second and the supplementary rapid cooling spray gun of third to spatial layout between the four can cool down the flue gas of quench tower upper end flue gas input better, for follow-up flue gas treatment is ready. And through setting up a plurality of spray guns, also make things convenient for the adjustment more with the temperature of control flue gas.

In the specific embodiment, the water supply part structure comprises an emergency water spraying tank 13, the upper end of the emergency water spraying tank is provided with a water inlet and is connected with a self-comprehensive water pump 14 through a water conveying pipeline; the upper end of the emergency water spraying tank is also provided with a compressed air inlet and is connected with a self-compressed air buffer tank 15 through a compressed air input pipeline; the lower end of the emergency spray tank is provided with a water outlet and is respectively connected with the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun through water outlet pipelines.

Therefore, the water supply part is simpler in structure and more reasonable in design. The internal pressure of the emergency water spray tank is changed by injecting compressed air into the emergency water spray tank, so that high-pressure water is supplied to the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun, and the flue gas in the quenching tower is cooled.

Specifically, a flange ball valve 16 and a flange check valve 17 are respectively arranged on the water conveying pipeline and the compressed air input pipeline. Like this, through set up flange ball valve and flange check valve on conduit and compressed air input pipeline respectively, can conveniently control water supply and air feed more.

In this embodiment, a main outlet pipe 18 is connected to a water outlet at the lower end of the emergency water spraying tank, a first branch pipe 19, a second branch pipe 20, a third branch pipe 21 and a fourth branch pipe 22 are connected to the main outlet pipe at intervals along the length direction of the main outlet pipe, and distal ends of the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected to cooling water input ends of the first auxiliary quenching spray gun, the second auxiliary quenching spray gun, the third auxiliary quenching spray gun and the main quenching spray gun.

Like this, through setting up first branch road pipeline, second branch road pipeline, third branch road pipeline and fourth branch road pipeline and supplying water to first supplementary rapid cooling spray gun, the supplementary rapid cooling spray gun of second, the supplementary rapid cooling spray gun of third and main rapid cooling spray gun respectively, influence each other is littleer, and the design is more reasonable.

Specifically, a flange gate valve 23 and a pneumatic valve 24 are arranged at one end of the main water outlet pipeline close to the emergency water spraying tank. Therefore, the on-off of the main water outlet pipeline can be controlled more conveniently.

Specifically, a flange check valve and a flange stop valve are arranged between a first branch pipeline and a second branch pipeline on the main water outlet pipeline. Therefore, water supply can be facilitated, and water supply control is realized.

Specifically, flange stop valves are respectively arranged on the second branch pipeline, the third branch pipeline and the fourth branch pipeline.

Specifically, the distal ends of the first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline at least have partial length sections which are hose structures. Thus, the installation and the arrangement are more convenient.

In this embodiment, still include quench water tank 25, quench water tank input is continuous with from the synthetic water pump and from the district normal water supply structure through first moisturizing pipeline 26 and second moisturizing pipeline 27 respectively, and quench water tank output passes through the water supply connection structure and links to each other with the main pipeline of play water.

Therefore, the quenching water tank serves as a water supply source, water can be supplied to the spray gun, and the design is more reliable.

In particular, the water supply connecting structure is connected with a cooling water output pipeline at the output end of the quenching water tank in pairs,

a flange gate valve, a pipeline Y-shaped filter 29, a cooling water pump 30, a flange check valve and a flange gate valve are sequentially arranged on the two cooling water output pipelines 28 in pairs along the flowing direction of liquid in the cooling water output pipelines; and the far ends of the two cooling water output pipelines paired pairwise are collected and connected together to form an output port and are used for being connected with a main water outlet pipeline. Like this, water supply connection structure is simpler, is provided with reserve water supply route for whole work is more reliable.

Specifically, be provided with flange gate valve, solenoid valve and flange gate valve in order on first moisturizing pipeline, still be provided with first moisturizing branch road pipeline, two flange gate valve outside positions on first moisturizing pipeline are connected separately at first moisturizing branch road pipeline both ends, and are provided with the flange stop valve on first moisturizing branch road pipeline.

Thus, the structure design is simpler, and the control can be more convenient.

Specifically, be provided with flanged gate valve and solenoid valve in order on second moisturizing pipeline, still be provided with second moisturizing branch road pipeline, second moisturizing branch road pipeline both ends are connected respectively and are put on second moisturizing pipeline flanged gate valve and solenoid valve outside, and are provided with the flange stop valve on second moisturizing branch road pipeline.

Thus, the structure design is simpler, and the control can be more convenient.

In this embodiment, still include from adsorbing circulating pump 31, from adsorbing circulating pump output with quench water tank input links to each other, and is provided with the flange stop valve between from adsorbing circulating pump output and quench water tank input.

Thus, the self-adsorption circulating pump can supply the quenching water tank with alkali liquor. The supplementary alkali liquor makes the liquid cooled by the flue gas have alkalinity, and can better neutralize the flue gas, thereby being more convenient for subsequent treatment and discharge.

In the embodiment, a flue gas circulation pipeline 32 is connected between the flue gas output end and the flue gas input end of the bag-type dust collector, and a hot air circulation fan 33 and a hot air heater 34 are arranged on the flue gas circulation pipeline; and two ends of the flue gas circulating pipeline are respectively provided with an 8-shaped blind plate 35.

Therefore, unqualified flue gas at the output end of the bag-type dust collector can circularly enter the input end again and is treated again, and the dust collection quality can be better improved. The hot air circulating fan and the hot air heater arranged on the flue gas circulating pipeline can convey and heat the flue gas, so that the flue gas can be better ensured to be at proper temperature.

Specifically, the liquid input end of the heated air circulation fan is connected with the output end of the self-cooling circulating water pump 36, and the liquid output end of the heated air circulation fan is connected with the input end of the circulating cooling tower 37. Thus, the hot air circulating fan can be cooled completely and the internal solid waste can be discharged to the circulating cooling tower for treatment.

Specifically, a flange stop valve is arranged between a liquid input end of the hot air circulating fan and an output end of the self-cooling circulating water pump; and a flange gate valve is arranged between the liquid output end of the hot air circulating fan and the input end of the circulating cooling tower. The design is more reasonable, and the control can be more convenient.

In this specific embodiment, the dust collector further comprises an air storage tank 38 for the bag-type dust collector, an input end of the air storage tank for the bag-type dust collector is connected with the self-instrument air storage tank, output ends of the air storage tank for the bag-type dust collector are respectively connected with an air interface at the upper end of the bag-type dust collector, and output ends of the air storage tank for the bag-type dust collector are also respectively connected with an air cannon at the lower end of the bag-type dust collector.

Therefore, the gas storage tank for the bag-type dust collector can better provide gas for the bag-type dust collector, and the bag-type dust collector can complete work more conveniently.

Specifically, the lower ends of the quenching tower and the bag-type dust remover are respectively provided with an ash box 39. This enables dust to be collected and centrally disposed of.

Specifically, the quench tower lower extreme has the vertical chimney 40 that sets up downwards of one end, and vertical in pairs is provided with the pneumatic valve on the chimney, and the inlet end of pneumatic valve with from being provided with the control trachea between the instrument gas storage tank separately, be provided with internal thread ball valve and solenoid valve on the control trachea separately. Thus, the dust collection and discharge at the lower end of the quenching tower can be more conveniently controlled.

In the specific embodiment, a slaked lime bin 41 is arranged above the slaked lime intermediate bin, and the lower end of the slaked lime bin is provided with an output port and is connected with the upper end of the slaked lime intermediate bin; and the air inlet at the upper end of the slaked lime bin and the air inlet at the upper end of the activated carbon bin are respectively connected with the output end of the meter air storage tank.

Therefore, the lime hydrate and the active carbon can be more conveniently removed and conveyed to the dry reactor for utilization.

Specifically, the upper ends of the slaked lime bin and the activated carbon bin are respectively provided with a supply port and are respectively connected with an external slaked lime supply structure and an external activated carbon supply device.

In this embodiment, the slaked lime conveying device includes a first flange pipe 42 horizontally disposed, and a slaked lime outlet at the lower end of the slaked lime intermediate bin is communicated with the middle of the first flange pipe, one end of the first flange pipe is connected with the slaked lime inlet at the lower end of the dry reactor through a slaked lime conveying pipe 43, the other end of the first flange pipe is connected with two first installation pipes 44, and the outer ends of the two first installation pipes are respectively connected with a slaked lime conveying fan 45.

Like this, the lime hydrate conveyor structure is simpler, and the design is more reasonable, can be better carry the lime hydrate to dry process reactor.

Specifically, the first mounting pipes are respectively provided with a butterfly valve.

Specifically, active carbon conveyor includes the second flange pipe 46 that the level set up, and makes active carbon storehouse lower extreme active carbon delivery outlet and second flange pipe middle part be the intercommunication setting, links to each other through active carbon pipeline 47 between second flange pipe one end and the active carbon input port of dry process reactor lower extreme, is connected with second installation pipeline 48 at the second flange pipe other end, links up respectively in second installation pipeline outer end and is provided with active carbon delivery fan 49.

Like this, active carbon conveyor structure is simpler, and the design is more reasonable, can be better carry the dry process reactor with active carbon.

Specifically, the second mounting pipes are respectively provided with butterfly valves.

Concretely, dry process reactor includes that outside whole is the shell body of tubulose and vertical design of circle, and the shell body lower extreme is buckled downwards towards quench tower one side slope and is linked to each other with the flue gas output of quench tower lower extreme, buckles downwards after shell body upper end level is buckled and is the U-shaped structure of establishing of falling to the distal end level orientation is buckled again and is extended the formation flue gas delivery outlet towards the direction of keeping away from the quench tower. Like this, the design of dry process reactor is more reasonable, and the U-shaped can be better retrain the flue gas of inside for the flue gas that reaches the requirement just can pass through, and has still increased reaction length, makes the reaction time of flue gas and slaked lime and active carbon longer.

Specifically, eight bag-type dust collectors are connected in series.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.