CN201524521U - Large wet desulphurization device with wet-type electrostatic demister - Google Patents

Large wet desulphurization device with wet-type electrostatic demister Download PDF

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Publication number
CN201524521U
CN201524521U CN2009200237331U CN200920023733U CN201524521U CN 201524521 U CN201524521 U CN 201524521U CN 2009200237331 U CN2009200237331 U CN 2009200237331U CN 200920023733 U CN200920023733 U CN 200920023733U CN 201524521 U CN201524521 U CN 201524521U
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CN
China
Prior art keywords
wet
demister
tower
flue gas
electrostatic demister
Prior art date
Application number
CN2009200237331U
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Chinese (zh)
Inventor
王金亭
谷吉林
闫君
李玲燕
宋广峰
陈芳
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山东山大能源环境有限公司
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Application filed by 山东山大能源环境有限公司 filed Critical 山东山大能源环境有限公司
Priority to CN2009200237331U priority Critical patent/CN201524521U/en
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Publication of CN201524521U publication Critical patent/CN201524521U/en

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Abstract

The utility model relates to a large wet desulphurization device with a wet-type electrostatic demister, wherein the bottom of a tower of the device is provided with a circulating slurry pool; the tower is internally provided with a three-stage or four-stage spraying layer; and the wet-type electrostatic demister is installed above the spraying layer or outside the tower. The interior of the wet-type electrostatic demister is arranged in a tube shape, a honeycomb shape or a square hole shape, and the tube-shaped, the honeycomb-shaped or the square-hole-shaped arrangement way leads the resistance of the demister to be greatly reduced, and the pressure is reduced to 200-500Pa. By adopting lime stone/lime or other alkaline matters (including ammonia water) as desulfurizing agent, the device can remove liquid drops, fine dust and heavy metal mercury with different particle sizes in flue gas with high efficiency, and catches various gases such as SO3, NH3 and the like which exist in a way of aerosol in the flue gas; furthermore, the device is simple in operation, low in running cost and remarkable in demisting and desulfurizing effects.

Description

A kind of large-scale wet desulphurization device that has the wet electrostatic demister

One, technical field

The utility model belongs to industrial waste gas purifying environmental protection and energy field, particularly is used for a kind of large-scale wet desulphurization device that removes multiple pollutant uniting of wet electrostatic demister that has of gas cleaning.

Two, background technology

At present, flue gas desulfurization is SO in the control fire coal boiler fume that extensively adopts both at home and abroad 2Effective ways, wherein use at most, the most effective flue gas desulfurization technique is process for flue gas desulfurization by limestone/lime-gypsum wet technology, in addition, can make the ammonia desulfurizing process of product recycling that very big development has also been arranged in recent years; But also there are the following problems for these two kinds of flue gas desulfurization technique devices: the two-layer mechanical demister of the common employing of (1) limestone/lime-gypsum wet desulfurizing process is removed the drop in the flue gas, reduce the water content in the smoke evacuation, but this demister is poor to the removal effect of fine droplets, can not remove micronic dust in the flue gas and heavy metal Hg etc., the water content in causing discharging fume, fine dust content and content of beary metal are still higher; (2) though the limestone/lime-gypsum wet desulfurizing process can efficiently remove the SO in the flue gas 2, but the SO to existing with aerosol form 3Removal efficiency but very low, in the fume emission process owing to reason, SO such as the existence of moisture and temperature be low 3Can condense into acid solution, back-end ductwork and chimney are caused corrosion; (3) for improving the rising height of flue gas after desulfurization, in the limestone/lime-gypsum wet desulfurizing process, is furnished with GGH usually, the cigarette temperature of the wet saturated flue gas that the absorption tower is discharged rises to discharging more than 80 ℃, but GGH is installed can bring investment and operating cost increase, desulphurization system operation pressure drop to increase, problems such as fault increases, and, facts have proved, after flue gas heats through GGH, the cigarette temperature still is lower than its acid dew point, still can produce new acid cure knot in back-end ductwork and chimney, etching problem still exists; (4) existing ammonia desulfurizing process ubiquity ammonia consumption height, aerosol is difficult to eliminate, easily forms when discharging fume problems such as ammonia mist, " NH 3Escape " cost that causes raises and secondary pollution problem becomes and hinders ammonia desulfurizing process at coal-fired flue-gas process field stumbling-block preventing the development.

Three, utility model content

The purpose of this utility model is to solve the problems referred to above that exist in the present wet fuel gas desulfurizing technology device, the wet electrostatic demister is set above the spraying layer of wet desulphurization device or outside the tower, utilize the static demister to remove drop, fine dust and the heavy metal Hg of different-grain diameter in the flue gas, and all gases that exists with aerosol form in the seizure flue gas, as SO 3, NH 3Deng.

The utility model is realized in the following way:

This wet desulphurization device is made of tower body, recycle slurry liquid pool, spraying layer and wet electrostatic demister, gas approach is arranged on the middle part of desulfurizing tower, the outlet of flue gas is arranged on the top of desulfurizing tower, the wet electrostatic demister is installed above spraying layer or outside the tower, the demister anode tube in a tubular form, cellular or square hole shape, anode pore bundle is arranged in round or square, fuses by brace summer and shell; The pore intermediate arrangement has cathode line, and the cathode line upper and lower end is separately fixed on the cathode frame of upper and lower part; The outside of demister is provided with insulated case.Anode pore internal diameter or inscribed circle diameter are 300mm~400mm, anode tube length 4~6m.The top of electrostatic precipitator is provided with continuous flush device.

Flue gas enters from desulfurizing tower middle part air inlet, after reaction zone and the reverse contact desulfuriation of absorbent slurry, enters the wet electrostatic demister, removes materials such as drop, aerosol, micronic dust and heavy metal Hg, discharges from exhanst gas outlet then; Electrostatic precipitator is caught the material that gets off with the recycle slurry liquid pool at the bottom of desulfurization product flows into tower, and recycle slurry liquid pool section is provided with agitating device, and slurries can be recycled.

The demister top and the bottom respectively are provided with four insulated case, are used for hanging the cathode line framework, and the full payload of bearing whole cathode line and framework.Insulated case adopts hot blast to keep inner dry, in order to avoid humidity is short-circuited.The cleaning that liquid that demister is collected by self or outer water receiving keep electrode surface, simple to operate.Tubulose, perforate mode cellular or the square hole shape can greatly reduce the resistance of demister, and pressure drop is generally 200~500Pa.

This large-scale wet desulphurization device, desulfurizing agent both can adopt limestone/lime or other alkaline matter (comprising ammoniacal liquor).Make desulfurizing agent, water smoke and SO with limestone/lime etc. 3efficiently remove the condensate liquid corrosion of having avoided back-end ductwork and inner wall of stack, thereby no longer need operation such as flue gas reheat, greatly reduce investment cost and operating cost; Make desulfurizing agent with ammoniacal liquor, the utility model can effectively solve present ammonia desulfurizing process ubiquitous " NH3 escape " problem, has both reduced secondary pollution, has reclaimed absorbent again, has reduced the ammonia consumption.In addition, this demister cleans electrode surface by liquid or the outer water receiving of self collecting, and simple to operate, operating cost is low.

Four, description of drawings

Fig. 1 is the structural representation that wet electrostatic demister of the present utility model is installed in the spray system top;

Fig. 2 is that wet electrostatic demister of the present utility model is installed in the outer structural representation of tower;

Fig. 3 is the plan structure schematic diagram of the utility model electrostatic precipitator.

Wherein: 1 is tower body; 2 is the recycle slurry liquid pool; 3 is gas approach; 4 is spraying layer; 5 is the wet electrostatic demister; 6 is flusher; 7 is exhanst gas outlet; 8 is electrode wires; 9 is anode tube; 10 is insulated case.

Five, the specific embodiment

Provide a preferred forms of the present utility model below in conjunction with accompanying drawing.

In Fig. 1, Fig. 2 and Fig. 3, this wet desulphurization device is made of tower body 1, recycle slurry liquid pool 2, spraying layer 4 and wet electrostatic demister 5, gas approach 3 is arranged on the middle part of desulfurizing tower, exhanst gas outlet 7 is arranged on the rear portion of wet electrostatic demister 5, between the rear portion of spraying layer 4 and exhanst gas outlet 7, wet electrostatic demister 5 is installed, the demister anode tube in a tubular form, cellular or square hole shape, anode pore bundle is arranged in round or square, fuses by brace summer and shell; The pore intermediate arrangement has cathode line, and the cathode line upper and lower end is separately fixed on the cathode frame of upper and lower part; The outside of demister is provided with insulated case.Anode pore internal diameter is 300mm~400mm, anode tube length 4~6m.The top of electrostatic precipitator is provided with flusher 6.

Flue gas enters desulfurizing tower from desulfurizing tower gas approach 3, pass through spraying layer 4 from bottom to top, with the desulfurizer slurry counter current contacting under absorption spraying layer spray, acidic materials such as the SO2 in the flue gas are desulfurized slurries and catch, and fall after rise to the recycle slurry liquid pool 2 of tower body 1 with spray liquid.

Flue gas after the desulfurization enters wet electrostatic demister 5, and the drop of the various particle diameters that contain in the flue gas, fine dust and heavy metal Hg etc. are removed by electrostatic precipitator, simultaneously the SO that exists with aerosol form 3Also be adsorbed Deng material and remove; Because wet electrostatic demister 5 can efficiently remove the drop and the SO of various particle diameters in the flue gas 3Deng the material that easily causes corrosion, improved the acid dew point of wet flue gas, flue gas can directly be discharged from chimney through the corrosion-resistant flue.

The electrode surface of wet electrostatic demister 5 cleans by the liquid of self collecting, and also can clean by the outer water receiving of flusher 6 usefulness, and cleaning fluid falls after rise to recycle slurry liquid pool 2 together with removing the material that gets off.

Be provided with agitating device in the recycle slurry liquid pool 2, unemployed desulfurizer slurry can be recycled 4 continuation of pumped back spraying layer and use then discharge processing from recycle slurry liquid pool 2 of desulfurization product in the recycle slurry liquid pool 2.

Claims (3)

1. large-scale wet desulphurization device that has the wet electrostatic demister, constitute by tower body, recycle slurry liquid pool, spraying layer and wet electrostatic demister, gas approach is arranged on the middle part of desulfurizing tower, the outlet of flue gas is arranged on the top of desulfurizing tower, it is characterized in that being equipped with above spraying layer or outside the tower wet electrostatic demister, the demister anode tube in a tubular form, cellular or square hole shape, anode pore bundle is arranged in round or square, fuses by brace summer and shell; The pore intermediate arrangement has cathode line, and the cathode line upper and lower end is separately fixed on the cathode frame of upper and lower part; The outside of demister is provided with insulated case.
2. a kind of large-scale wet desulphurization device that has the wet electrostatic demister according to claim 1 is characterized in that anode pore internal diameter or inscribed circle diameter are 300mm~400mm, anode tube length 4~6m.
3. a kind of large-scale wet desulphurization device that has the wet electrostatic demister according to claim 1 is characterized in that the top of electrostatic precipitator is provided with continuous flush device.
CN2009200237331U 2009-03-16 2009-03-16 Large wet desulphurization device with wet-type electrostatic demister CN201524521U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200237331U CN201524521U (en) 2009-03-16 2009-03-16 Large wet desulphurization device with wet-type electrostatic demister

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200237331U CN201524521U (en) 2009-03-16 2009-03-16 Large wet desulphurization device with wet-type electrostatic demister

Publications (1)

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CN201524521U true CN201524521U (en) 2010-07-14

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335538A (en) * 2011-08-26 2012-02-01 浙江菲达脱硫工程有限公司 Device and method for removing composite pollutant
CN102430478A (en) * 2011-08-26 2012-05-02 浙江菲达脱硫工程有限公司 Device and method for removing PM 2.5 from smoke
CN102500188A (en) * 2011-11-23 2012-06-20 浙江菲达脱硫工程有限公司 Wet type electric dust-removing device
CN102500222A (en) * 2011-11-23 2012-06-20 浙江菲达脱硫工程有限公司 Process and device for removing combined pollutants
CN102580500A (en) * 2012-02-23 2012-07-18 庄建中 Dedusting desulfurization environment-friendly chimney
CN102688682A (en) * 2012-05-16 2012-09-26 浙江菲达环保科技股份有限公司 Flue gas desulfurization tower
CN103816771A (en) * 2014-03-26 2014-05-28 南京宇行环保科技有限公司 Absorption tower with wet type electric demister
CN104028382A (en) * 2014-06-13 2014-09-10 南京龙源环保有限公司 Vertical type wet electric demister
CN104226478A (en) * 2014-05-09 2014-12-24 中电投远达环保工程有限公司 High-pressure insulation sealing device of wet type electrostatic dust remover
CN105536990A (en) * 2015-12-18 2016-05-04 河北宁泊环保有限公司 Wet fog electrostatic precipitator
CN105797866A (en) * 2016-05-18 2016-07-27 佛山市南海区保蓝机械科技有限公司 No-clean wet electrostatic purifying device
CN106925431A (en) * 2015-12-29 2017-07-07 青岛道空优科技有限公司 A kind of heavy metal adsorption cleaning system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430478A (en) * 2011-08-26 2012-05-02 浙江菲达脱硫工程有限公司 Device and method for removing PM 2.5 from smoke
CN102335538A (en) * 2011-08-26 2012-02-01 浙江菲达脱硫工程有限公司 Device and method for removing composite pollutant
CN102500188A (en) * 2011-11-23 2012-06-20 浙江菲达脱硫工程有限公司 Wet type electric dust-removing device
CN102500222A (en) * 2011-11-23 2012-06-20 浙江菲达脱硫工程有限公司 Process and device for removing combined pollutants
CN102580500B (en) * 2012-02-23 2014-05-07 庄建中 Dedusting desulfurization environment-friendly chimney
CN102580500A (en) * 2012-02-23 2012-07-18 庄建中 Dedusting desulfurization environment-friendly chimney
CN102688682A (en) * 2012-05-16 2012-09-26 浙江菲达环保科技股份有限公司 Flue gas desulfurization tower
CN103816771B (en) * 2014-03-26 2016-01-06 南京宇行环保科技有限公司 A kind of absorption tower including wet type electrostatic precipitator
CN103816771A (en) * 2014-03-26 2014-05-28 南京宇行环保科技有限公司 Absorption tower with wet type electric demister
CN104226478A (en) * 2014-05-09 2014-12-24 中电投远达环保工程有限公司 High-pressure insulation sealing device of wet type electrostatic dust remover
CN104028382A (en) * 2014-06-13 2014-09-10 南京龙源环保有限公司 Vertical type wet electric demister
CN105536990A (en) * 2015-12-18 2016-05-04 河北宁泊环保有限公司 Wet fog electrostatic precipitator
CN106925431A (en) * 2015-12-29 2017-07-07 青岛道空优科技有限公司 A kind of heavy metal adsorption cleaning system
CN105797866A (en) * 2016-05-18 2016-07-27 佛山市南海区保蓝机械科技有限公司 No-clean wet electrostatic purifying device

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Granted publication date: 20100714