CN204848746U - Coke wet quenching flue gas is retrieved and purifier - Google Patents

Coke wet quenching flue gas is retrieved and purifier Download PDF

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Publication number
CN204848746U
CN204848746U CN201520399088.9U CN201520399088U CN204848746U CN 204848746 U CN204848746 U CN 204848746U CN 201520399088 U CN201520399088 U CN 201520399088U CN 204848746 U CN204848746 U CN 204848746U
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China
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wet
water
quenching
cooling tower
coke
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CN201520399088.9U
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Inventor
许艳梅
樊响
王青
宋玉才
周景伟
闫武装
谢桂龙
殷旭
邓志鹏
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Beijing Metallurgical Equipment Research Design Institute Co Ltd
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Beijing Metallurgical Equipment Research Design Institute Co Ltd
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Abstract

The utility model provides a coke wet quenching flue gas is retrieved and purifier comprises interconnect's quenching tower, evaporation cooling tower, wet -type electrostatic precipitator, aiutage, water pump, water tank, sedimentation tank, evaporation cooling tower internally mounted sprays the heat sink, the quenching tower comprises dust cage, baffling formula wood check dust extractor, spray set and coke quenching cart, wet -type electrostatic precipitator comprises water catch bowl, negative pole straining device, corona electrode, positive pole tube bank, distribution of air flow device, WESP spray set, high voltage dc source, the insulator of guiding the line, the dust cage and the evaporation cooling tower intercommunication of quenching tower, evaporation cooling tower and wet -type electrostatic precipitator intercommunication, export of evaporation cooling tower and sedimentation tank intercommunication, the water catch bowl of wet -type electrostatic precipitator bottom and the water inlet intercommunication of water tank, its advantage is: realize the discharge to reach standard of flue gas to effectively deviate from multiple pollutants such as remaining phenolic constituents in the flue gas, cyanide, sulphide, the comprehensive utilization of energy -concerving and environment -protective realization resource.

Description

A kind of coke wet quenching off-gas recovery and refining plant
Technical field:
The utility model relates to industrial flue gas cleaning technical field, particularly relates to a kind of coke wet quenching off-gas recovery and refining plant.
Background technology:
In the prior art, the pollutent of coal chemical enterprise release is the important sources causing ambient atmosphere to pollute.In process of coking, atmospheric polluting material source mainly contains three links-coaling, discharges of the coke and quenching process; Wherein, coke quenching tower discharge atmospheric polluting material account for about 35% of coking production Air Pollutant Emission, be coal chemical enterprise important atmospheric polluting material source.What current domestic coke oven generally adopted is traditional wet quenching technology, even if in the coke-oven plant of application dry quenching(of coke) technology, wet quenching is also used as a kind of overhaul reserve technology.Wet quenching is extinguishing of red Jiao of red heat directly being sprayed water, its facility is simple, reduced investment, technology is simple, processing ease, but a large amount of water vapor that quenching process produces contains a large amount of dust, phenols, prussiate, sulfide, obnoxious flavour, and the large quantity of air sucked with coke quenching tower open at both ends forms mixed airflow, carry a large amount of water droplet secretly and coke powder overflows from tower top, severe contamination air and surrounding environment.In new " coking chemistry emission of industrial pollutants standard " (GB16171-2012) that promulgate, the exhaust gas emission of coke-oven plant is had higher requirement, require from 1 day January in 2015, the granular material discharged concentration 30mg/Nm of existing enterprise's coke oven smoke stack emission 3, the granular material discharged concentration of the regional coke oven smoke stack emission of special discharge is 15mg/Nm 3.At present, the dedusting technology that domestic wet quenching is commonly used is, at coke quenching tower inner top, deflector type wood lattice dust catcher is housed, and a large amount of coke powder produced when can trap quenching and water smoke, efficiency of dust collection is about 60%.But after traverse baffle trapping, the emission concentration about 200 ~ 400g/t of dust, cannot meet the emission standard of the burnt 50g of ton of national regulation.And the particle diameter major part of discharging dust is less than 10 μm, pollutent easily forms floating dust, improves the concentration of peripheral region, coke-oven plant PM2.5, brings serious pollution to surrounding environment.
Summary of the invention:
The purpose of this utility model overcomes the deficiency that prior art exists, and provides a kind of energy-conserving and environment-protective and can realize high and comprehensive coke wet quenching off-gas recovery and the refining plant removing multiple pollutant of coke oven flue gas qualified discharge, recycle-water steam and efficiency of dust collection.
The technical solution that the utility model adopts is: provide a kind of coke wet quenching off-gas recovery and refining plant, comprise by the interconnective coke quenching tower of pipeline, aiutage, water pump, water tank; It is characterized in that: also comprise the wet cooling tower, wet electrical dust precipitator, the settling tank that are attached thereto; The thick dedusting section that the deflector type wood lattice dust catcher that the dust gathering arrester that coke quenching tower is installed by top and top are installed forms and the spray equipment that bottom is installed and the quenching section that quenching car forms are formed; Wet cooling tower inside is provided with spraying ventilating device; The insulator that wet electrical dust precipitator is gone between by water leg, negative electrode take-up device, corona electrode, anode tube bank, airflow uniform distribution device, WESP spray equipment, high-voltage DC power supply, band forms; The outlet conduit of dust gathering arrester that coke quenching tower top is installed is communicated with the intake ducting of wet cooling tower; The outlet pipe on wet cooling tower top is communicated with wet electrical dust precipitator intake ducting; The lower part outlet of wet cooling tower is communicated with settling tank; Water leg with row's mouth is installed bottom wet electrical dust precipitator; The water outlet of water leg is connected with the water-in of water tank; The venting port of wet electrical dust precipitator lower side is connected with aiutage; The water-in of spray equipment that wet electrical dust precipitator top is installed is connected with the water outlet of water pump; The water-in of water pump is connected with water tank; The water-in of settling tank is connected with the water outlet of wet cooling tower with the water outlet of water tank.Be further characterized in that: the airflow uniform distribution device that wet electrical dust precipitator inlet end is arranged is made up of adjustable flow deflector and airflow-distribution board; In wet electrical dust precipitator housing, homogeneous vertical arranges the anode tube bank that some glass reinforced plastic does and corona electrode, and high-voltage DC power supply is connected with corona electrode by the insulator of band lead-in wire, and corona electrode is fixed by negative electrode take-up device.
The beneficial effects of the utility model are: the water vapor produced in coke wet quenching process and subsidiary particulate matter can be reclaimed substantially, dustiness is down to 10mg/Nm the most at last 3even 5mg/Nm 3below realize qualified discharge, and remove the water smoke carried secretly in flue gas simultaneously, effective elimination can be obtained to the multiple pollutant such as phenols, prussiate, sulfide residual in flue gas, greatly improve the cleanliness factor of flue gas, reduce the pollution to environment.Because the water vapor collected can recycle, the waste of water resources can be greatly reduced, achieve recycle and the energy-saving and emission-reduction of energy resource.
Accompanying drawing illustrates:
Fig. 1 is the system diagram of a kind of coke wet quenching off-gas recovery of the utility model embodiment and refining plant;
In accompanying drawing: 1. coke quenching tower; 2. spray equipment; 3. deflector type wood lattice dust catcher; 4. dust gathering arrester; 5. quenching car; 6. wet cooling tower; 7. spraying ventilating device; 8. wet electrical dust precipitator; 9. water leg; 10. negative electrode take-up device; 11. corona electrodes; 12. anode tube banks; 13. airflow uniform distribution devices; 14.WESP spray equipment; 15. high-voltage DC power supplies; The insulator of 16. band lead-in wires; 17. aiutages; 18. water pumps; 19. water tanks; 20. settling tanks.
Embodiment:
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail: Fig. 1 is the system diagram of a kind of coke wet quenching off-gas recovery and refining plant.This device comprises the coke quenching tower 1, wet cooling tower 6, wet electrical dust precipitator 8, aiutage 17, water pump 18, water tank 19, the settling tank 20 that are interconnected.Wherein, coke quenching tower 1 comprises the bottom quenching section be made up of spray equipment 2 and the burnt car 5 of breath and the thick dedusting section in top be made up of deflector type wood lattice dust catcher 3 and dust gathering arrester 4 forms; Wet cooling tower 6 top is provided with spraying ventilating device 7; Wet electrical dust precipitator 8 is made up of the insulator 16 of water leg 9, negative electrode take-up device 10, corona electrode 11, anode tube bank 12, airflow uniform distribution device 13, WESP spray equipment 14, high-voltage DC power supply 15, band lead-in wire; Wet electrical dust precipitator 8 is communicated with aiutage 17; The outlet of water tank 19 is communicated with water pump 18 with settling tank 20 respectively, and the entrance of water tank 19 is communicated with the water leg 9 bottom wet electrical dust precipitator 8; Settling tank 20 is connected with wet cooling tower 6 with coke quenching tower 1.Principle of work of the present utility model is: after the red Jiao's spray coke quenching water in the 2 pairs of quenching cars 5 of the spray equipment in coke quenching tower 1, the flue gas produced enters deflector type wood lattice dust catcher 3 and carries out thick dedusting, flue gas after thick dedusting is trapped by top dust gathering arrester 4, dust gathering arrester 4 structure from top to bottom presents diminishing horn shape, flue gas can be collected better, and enter wet cooling tower 6 by the flue that top is connected, cool further, the outlet of wet cooling tower 6 connects the top inlet of wet electrical dust precipitator 8 by pipeline, terminal dedusting demist is carried out in wet electrical dust precipitator, clean flue gas after final purification enters air through aiutage 17.Water vapor during such fume treatment order can farthest remove smoke and objectionable impurities.Coke quenching water after quenching flows into settling tank 20 along ditch, and the water-in of spray equipment in coke quenching tower 1 is connected with settling tank 20, can re-start quenching cycle water circulation use, energy-conserving and environment-protective.Such fume treatment order can also control the emitted dose of wet cooling tower 6 top spray heat sink 7, control flue gas exit temperature at about 55 DEG C, most water vapor is condensed into water in this stage, and the water vapor that condensation is got off and dust enter coke quenching tower settling tank 20 through discharge line.Wet electrical dust precipitator 8 inlet end is provided with airflow uniform distribution device 13, is made up of, makes even gas distribution adjustable flow deflector and airflow-distribution board, avoids the problem that the uneven dedusting demisting efficiency brought of flue gas reduces; In housing, homogeneous vertical arranges some glass reinforced plastic tube bank 12 and corona electrode 11, and high voltage direct current 15 is connected with corona electrode 11 by the insulated case of 16 band lead-in wires, and corona electrode is fixed by negative electrode fixed system 10, avoids corona electrode 11 to swing in high velocity air.The liquid that wet electrical dust precipitator 8 is collected and cleaning showers liquid enter water tank 19 through underdrain pipeline, supernatant liquor boosts via water pump 20, wash-down water as WESP spray equipment 14 recycles, and turbid liquid sends into settling tank 20 through drainage pipeline, recycles after treatment.

Claims (3)

1. coke wet quenching off-gas recovery and a refining plant, comprises by the interconnective coke quenching tower of pipeline (1), aiutage (17), water pump (18), water tank (19); It is characterized in that: also comprise the wet cooling tower (6), wet electrical dust precipitator (8), the settling tank (20) that are attached thereto; The thick dedusting section that deflector type wood lattice dust catcher (3) that the dust gathering arrester (4) that coke quenching tower (1) is installed by top and top are installed forms and the spray equipment (2) that bottom is installed and the quenching section that quenching car (5) forms are formed; Wet cooling tower (6) inside is provided with spraying ventilating device (7); Wet electrical dust precipitator (8) is restrained (12), airflow uniform distribution device (13), WESP spray equipment (14), high-voltage DC power supply (15) by water leg (9), negative electrode take-up device (10), corona electrode (11), anode, is with the insulator (16) of lead-in wire to form; The outlet conduit of the dust gathering arrester (4) that coke quenching tower (1) top is installed is communicated with the intake ducting of wet cooling tower (6); The outlet pipe on wet cooling tower (6) top is communicated with wet electrical dust precipitator (8) intake ducting; The lower part outlet of wet cooling tower (6) is communicated with settling tank (20); The water leg (9) with row's mouth is installed in wet electrical dust precipitator (8) bottom; The water outlet of water leg (9) is connected with the water-in of water tank (19); The venting port of wet electrical dust precipitator (8) lower side is connected with aiutage (17); The water-in of the spray equipment (14) that wet electrical dust precipitator (8) top is installed is connected with the water outlet of water pump (18); The water-in of water pump (18) is connected with water tank (19); The water-in of settling tank (20) is connected with the water outlet of wet cooling tower (6) with the water outlet of water tank (19).
2. a kind of coke wet quenching off-gas recovery as claimed in claim 1 and refining plant, is characterized in that: the airflow uniform distribution device (13) that wet electrical dust precipitator (8) inlet end is arranged is made up of adjustable flow deflector and airflow-distribution board.
3. a kind of coke wet quenching off-gas recovery as claimed in claim 1 and refining plant, it is characterized in that: in wet electrical dust precipitator (8) housing, homogeneous vertical arranges anode tube bank (12) and corona electrode (11) that some glass reinforced plastic does, high-voltage DC power supply (15) is connected with corona electrode (11) by the insulator (16) of band lead-in wire, and corona electrode (11) is fixed by negative electrode take-up device (10).
CN201520399088.9U 2015-06-10 2015-06-10 Coke wet quenching flue gas is retrieved and purifier Active CN204848746U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540898A (en) * 2016-02-01 2016-05-04 浙江天地环保工程有限公司 Ultra-low drainage wet type electric dedusting wastewater concentrated liquid treatment system
CN106512667A (en) * 2016-12-31 2017-03-22 江苏博际环境工程科技有限公司 Wet-type variable-flow flue gas purification and downward wet-type static electricity combined ultralow flue gas emission device
CN106566565A (en) * 2016-11-05 2017-04-19 北京首钢国际工程技术有限公司 Collection method for particulate matter emission in coke wet quenching process
CN106984437A (en) * 2017-06-08 2017-07-28 天华化工机械及自动化研究设计院有限公司 A kind of wet electric dust-removing process handled for catalyst preparation industrial tail gas
CN108854458A (en) * 2018-09-07 2018-11-23 河南嵩岳碳素有限公司 The steam discharge technology of nitrogen-containing oxide and tar
CN110354999A (en) * 2019-07-22 2019-10-22 陆昌元 A kind of smoke purifying equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540898A (en) * 2016-02-01 2016-05-04 浙江天地环保工程有限公司 Ultra-low drainage wet type electric dedusting wastewater concentrated liquid treatment system
CN106566565A (en) * 2016-11-05 2017-04-19 北京首钢国际工程技术有限公司 Collection method for particulate matter emission in coke wet quenching process
CN106512667A (en) * 2016-12-31 2017-03-22 江苏博际环境工程科技有限公司 Wet-type variable-flow flue gas purification and downward wet-type static electricity combined ultralow flue gas emission device
CN106984437A (en) * 2017-06-08 2017-07-28 天华化工机械及自动化研究设计院有限公司 A kind of wet electric dust-removing process handled for catalyst preparation industrial tail gas
CN108854458A (en) * 2018-09-07 2018-11-23 河南嵩岳碳素有限公司 The steam discharge technology of nitrogen-containing oxide and tar
CN110354999A (en) * 2019-07-22 2019-10-22 陆昌元 A kind of smoke purifying equipment

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