CN203525547U - Wet-type integrated removal tower for desulfurization, denitration, demercuration, and PM2.5 removal - Google Patents

Wet-type integrated removal tower for desulfurization, denitration, demercuration, and PM2.5 removal Download PDF

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Publication number
CN203525547U
CN203525547U CN201320684929.1U CN201320684929U CN203525547U CN 203525547 U CN203525547 U CN 203525547U CN 201320684929 U CN201320684929 U CN 201320684929U CN 203525547 U CN203525547 U CN 203525547U
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China
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wet
tower
flue gas
oxidation
oxidizing agent
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CN201320684929.1U
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Chinese (zh)
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高继贤
张小娟
阎冬
洪小松
范治国
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上海龙净环保科技工程有限公司
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Abstract

The utility model discloses a wet-type integrated removal tower for desulfurization, denitration, demercuration, and PM2.5 removal. A wet desulfurization section, an oxidation denitration and demercuration section and a wet electric dust removal section are arranged in the removal tower from bottom to top in sequence; a flue gas inlet is formed in the wet desulfurization section; a clean flue gas outlet is formed in the wet electric dust removal section. The utility model also discloses a wet-type integrated removal process for desulfurization, denitration, demercuration, and PM2.5 removal, the process comprises the following steps: S101, a wet desulfurization stage; S102, a denitration and demercuration stage; S103, a PM2.5 removal stage; S104, a clean flue gas discharging stage. By adopting the removal tower, fine particles, such as sulfur oxides, NOx, Hg and PM2.5, are removed from the flue gas in sequence in the same removal tower, the formation of gypsum rain is effectively prevented, the flue gas purification efficiency is improved, ultralow emission of the flue gas can be realized, moreover, the occupied area is greatly saved, and the operating cost is reduced.

Description

A kind of wet type integrated desulfurizing denitration demercuration takes off the tower that removes of PM2.5
Technical field
The utility model relates to the technical field of Air Pollution Control, relates in particular to the de-PM of a kind of wet type integrated desulfurizing denitration demercuration 2.5remove tower.
Background technology
Improving constantly of the economic development that industrialized rapid progress has been advanced by leaps and bounds for the mankind have brought and living standard, however the mankind are when enjoying industrialization achievement, also bearing the various problem of environmental pollutions that in industrial production, fossil fuel causes.Wherein, atmosphere pollution is one of the most serious environmental problem of facing of 21 century human society survival and development.China is a country that coal reserves is abundant, coal accounts for 75% of primary energy, energy consumption structure has caused the aggravation of atmosphere pollution to the undue dependence of coal, the sulfur dioxide that coal burning is discharged and nitrogen oxide are the main precursors of acid rain and fine particle and haze weather, and the mercury pollution of discharge also causes multiple harm.Therefore, the SO in coal-fired flue-gas 2, NO x, mercury and fine particle pollution to control be topmost task in current Air Pollution Control field.
Day by day strengthening of environmental consciousness makes to pollute the pith that controlling of task becomes various countries' environmental protection cause.In order to contain SO 2, NO x, PM 2.5and the harm of mercury, realizing sustainable development, China constantly strengthens coal-fired utility SO 2and NO x, PM 2.5and the control of the discharge capacity of mercury, NO x, SO 2discharge standard Deng gas pollutant is increasingly strict.
In the world that development technique is simple, operating cost is low, and the desulfurization and denitrification integral technology with better runnability is administered one of direction of technical development as coal-fired flue-gas.At present the flue gas desulfurization and denitrification technology of research and development can be divided into two large classes in the world: a class is to apply traditional flue gas desulfurization technique (FGD) combined selective catalytic reduction technology (SCR) to work alone separately and remove respectively the SO in flue gas 2and NO xcombined desulfurization and denitration technology; Another kind of is that a kind of technology of application removes SO in whole system simultaneously 2and NO xthe new technology of removing of combining, i.e. desulphurization denitration technology simultaneously.
In recent years, the domestic first kind desulphurization denitration technology that generally adopts, is about to Wet Flue Gas Desulfurization Technique (WFGD) and carrys out desulphurization denitration with the split type method combining of SCR technology (SCR).Although this kind of method can realize respectively desulfurization and denitration, investment is higher with operating cost, and complex process, and therefore developing multiple flue gas pollutant cooperation-removal technology has become a current international study hotspot.In " 863 " high-tech research plan has been listed the technological development of flue gas and desulfurizing and denitrifying demercuration by China Ministry of Science and Technology.
At present, China coal-burning power plant generally adopts Wet Flue Gas Desulfurization Technique (WFGD), and this technology has very high desulfuration efficiency, but is difficult to denitration demercuration simultaneously, and this is because the NO in actual industrial flue gas xmore than 90% be all NO, NO is except generating complex compound, hardly by water or alkali liquor absorption.To reach in actual applications good wet denitration efficiency, can adopt oxidant that NO is oxidized, and be high price mercury mercury oxidation, form water-soluble mercury salt.In wet absorption process, how to improve NO xoxidizability, be the simultaneously key of desulphurization and denitration and demercuration technology of wet method.
The integrated control technology of coal-fired flue gas desulfurization and denitration demercuration has broad application prospects, compare with independent employing desulfurization or denitrating technique, in a system, simultaneously desulphurization and denitration is with the obvious advantage, as system complexity reduces, has better runnability, convenient management, floor space is little and small investment, low cost.Because of but the important directions of following air contaminant treatment and sustainable development.
The more important thing is, because combustion of fossil fuel brings the factor of serious atmosphere pollution except SO 2and NO xoutward, the baneful influence of haze also increasingly sharpens, and this pollutant is fine particle (PM 2.5).PM 2.5referring to that aerodynamic diameter is less than the subparticle of 2.5 μ m, is the key factor that causes the environmental problems such as atmospheric visibility reduction, haze weather, acid rain and Global climate change.
At present, PM 2.5pollute another key problem that day by day becomes the outstanding atmospheric environment problem of China.Because its specific area is very large, easily enriching heavy metal element, is one of topmost pollutant affecting human body health, and existing conventional dedusting technology is to PM 10and following subparticle is difficult to effective trapping.And the exploitation of wet static dedusting technology is to PM 2.5the control of discharge will play an important role.
Yet the technique or the rarely seen report of equipment that in prior art, wet static dedusting technology are combined with flue gas and desulfurizing and denitrifying demercuration technology at present, the applicant is devoted to develop this new product, realizes multiple pollutant as SO 2, NO x, mercury and PM 2.5deng combining, remove, and can effectively prevent " gypsum rain " phenomenon of producing after wet desulphurization, both improved air contaminant treatment effect, reached minimum discharge requirement, can effectively reduce operating cost and floor space again, formed novel " smoke gas treatment tower " equipment and technique are the impressive progresses of green technology innovation, for Collaborative Control multiple pollutant tool, are of great significance.
Utility model content
In view of the deficiency that above-mentioned prior art exists, the utility model proposes and a kind ofly can with tower one, realize desulphurization and denitration, the removal of mercury and combine the PM removing in flue gas same removing in tower 2.5the integrated tower that removes of wet type Deng subparticle.
For achieving the above object, the utility model provides a kind of wet type integrated desulfurizing denitration demercuration to take off PM 2.5remove tower, described in remove in tower and be disposed with from the bottom to top: wet desulphurization section, oxidation and denitration demercuration section and wet electric precipitation section, gas approach is arranged in described wet desulphurization section, clean exhanst gas outlet is arranged in described wet electric precipitation section.
As further improvement of the utility model, described wet desulphurization section comprises tower prime cement liquid pool and desulfurizer slurry spraying layer, described desulfurizer slurry spraying layer is arranged on described tower prime cement liquid pool top, and described gas approach channel setting is between described desulfurizer slurry spraying layer and described tower prime cement liquid pool.
Described tower prime cement liquid pool is built-in with oxidation air pipe, described oxidation air pipe is driven by the oxidation fan that is arranged on described wet desulphurization section outside, the below of described oxidation air pipe is provided with jet stirrer, and described jet stirrer leads to and connects by being arranged on the jet pump of described wet desulphurization section outside and the upper guide of described tower prime cement liquid pool.
Described desulfurizer slurry spraying layer is connected with the circulating pump and the described tower prime cement liquid pool that are arranged on described wet desulphurization section outside, forms slurries closed circuit, and the slurries in described tower prime cement liquid pool are imported in described desulfurizer slurry spraying layer.
As further improvement of the utility model, in described oxidation and denitration demercuration section, be from top to bottom disposed with: oxidizing agent solution entrance, flue gas distributor, flue gas even distribution device and oxidizing agent solution outlet, described flue gas even distribution device conducting connects described wet desulphurization section and oxidation and denitration demercuration section.On described flue gas even distribution device, evenly offer pore, flue gas is pore ejection thus from described flue gas even distribution device enters described oxidation and denitration demercuration section, contacts and reacts with the oxidizing agent solution in described oxidation and denitration demercuration section.
As further improvement of the utility model, described oxidation and denitration demercuration section outside is also provided with an oxidizing agent solution storage tank, the outlet of described oxidizing agent solution draw with tower in uniform flue gas generation gas-liquid contact reacted oxidizing agent solution to described oxidizing agent solution storage tank, oxidizing agent solution in described oxidizing agent solution storage tank is directed to described oxidizing agent solution entrance again, again enter in described oxidation and denitration demercuration section, form oxidant circulation loop.
As further improvement of the utility model, described flue gas distributor is single or multiple lift structure, on described flue gas distributor and described flue gas even distribution device, evenly offers pore.
As further improvement of the utility model, in described wet electric precipitation section, be from top to bottom disposed with: clean exhanst gas outlet, pole plate flushing water spray equipment, electric field region and flushing water outlet, described electric field region is formed by minus plate and the arrangement of positive plate alternate intervals of some upright layouts, and the electric field region of described wet electric precipitation section can be made as single-stage or multistage.
As further improvement of the utility model, in described wet desulphurization section, be also provided with demister, described demister is arranged in desulfurizer slurry spraying layer top, the water inlet of the flushing water pipeline of described demister and described wet electric precipitation section pole plate flushing water outlet guide lead to and connect, mist eliminator flushing water falls into after slurry pool, via after the dehydration of slurries dewatering system, be back to wet electric precipitation section pole plate flushing water again, form thus flushing water closed circuit.
Wet type integrated desulfurizing denitration demercuration of the present utility model takes off PM 2.5remove tower and technique compared with prior art at least has following technique effect:
Wet type integrated desulfurizing denitration demercuration of the present utility model takes off PM 2.5remove tower, conventional wet sulfur removal technology and oxidation and denitration demercuration technology and wet electrostatic precipitation technology three are mutually combined effectively, realized same removing and in tower, successively removed successively oxysulfide, the NO in flue gas x, Hg, PM 2.5deng subparticle, can effectively prevent the formation of " gypsum rain ", improved the purification efficiency to flue gas, can realize flue gas minimum discharge, and greatly save floor space, reduced operating cost.
Wet type integrated desulfurizing denitration demercuration of the present utility model takes off PM 2.5removing process, on the basis of existing Wet Flue Gas Desulfurization Technology, strong oxidizing property solution is fully contacted and is reacted with flue gas after desulfurization, make the NO in flue gas be oxidized to NO 2, NO 2by solution, absorbed and removed, this process can simultaneous removing heavy metal Hg, and flue gas enters high voltage electric field subsequently, PM 2.5deng being removed by charged transfer cleaning.So just realized in same tower combining of multiple pollutant removed, improved the efficiency of gas pollution control.
Accompanying drawing explanation
Fig. 1 is the de-PM of wet type integrated desulfurizing denitration demercuration of the present utility model 2.5the structural representation that removes tower.
Fig. 2 is the plan structure schematic diagram of flue gas even distribution device of the present utility model.
Primary clustering symbol description in figure:
100, wet desulphurization section 101, circulating pump 102, slurries closed circuit
103, jet stirrer 104, jet pump 105, oxidation air pipe
106, oxidation fan 107, tower prime cement liquid pool 108, desulfurizer slurry spraying layer
109, demister 110, flushing water pipeline 200, oxidation and denitration demercuration section
201, flue gas even distribution device 202, pore 203, flue gas distributor
204, oxidizing agent solution 205, oxidizing agent solution entrance 206, oxidizing agent solution outlet
207, oxidizing agent solution storage tank 300, wet electric precipitation section 301, positive plate
302, minus plate 303, pole plate flushing water spray equipment 304, flushing water outlet
400, gas approach 500, clean exhanst gas outlet.
The specific embodiment
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Embodiment mono-:
Fig. 1 is the de-PM of wet type integrated desulfurizing denitration demercuration of the present utility model 2.5the structural representation that removes tower.As shown in Figure 1, the de-PM of a kind of wet type integrated desulfurizing denitration demercuration that the present embodiment proposes 2.5remove tower, described in remove in tower and be disposed with from the bottom to top: wet desulphurization section 100, oxidation and denitration demercuration section 200 and wet electric precipitation section 300, gas approach 400 is arranged in wet desulphurization section 100, clean exhanst gas outlet 500 is arranged in wet electric precipitation section 300.
Particularly, wet desulphurization section 100 comprises tower prime cement liquid pool 107 and desulfurizer slurry spraying layer 108, desulfurizer slurry spraying layer 108 is arranged on tower prime cement liquid pool 107 tops, and gas approach 400 channel settings are between desulfurizer slurry spraying layer 108 and tower prime cement liquid pool 107.
The middle part of tower prime cement liquid pool 107 is built-in with oxidation air pipe 105, oxidation air pipe 105 is driven by the oxidation fan 106 that is arranged on wet desulphurization section 100 outsides, the below of oxidation air pipe 105 is provided with jet stirrer 103, and jet stirrer 103 leads to and connects with the upper guide of tower prime cement liquid pool 107 by being arranged on the jet pump 104 of wet desulphurization section 100 outsides.
Desulfurizer slurry spraying layer 108 is connected with the circulating pump 101 and the described tower prime cement liquid pool 107 that are arranged on wet desulphurization section 100 outsides, forms slurries closed circuit 102, and the slurries in tower prime cement liquid pool 107 are imported in desulfurizer slurry spraying layer 108.
As mentioned above, jet stirrer 103 is connected outward at tower with jet pump 104, and 103 pairs of tower prime cement liquid of jet stirrer play stirring action, prevents slurries caking.Oxidation fan 106, for oxidation air pipe 105 provides oxidation air, for improving slurries oxidation effectiveness, promotes accessory substance quality.Desulfurizer slurry spraying layer 108 sprays desulfurizer slurry downwards, contacts with flue gas is reverse, reaches desulfurization object.
Particularly, in oxidation and denitration demercuration section 200, be from top to bottom disposed with: oxidizing agent solution entrance 205, flue gas distributor 203, flue gas even distribution device 201 and oxidizing agent solution outlet 206, flue gas even distribution device 201 conductings connect wet desulphurization section 100 and oxidation and denitration demercuration section 200.
Oxidation and denitration demercuration section 200 outsides are also provided with an oxidizing agent solution storage tank 207, oxidizing agent solution outlet 206 draw with tower in uniform flue gas generation gas-liquid contact reacted oxidizing agent solution 204 to oxidizing agent solution storage tank 207, oxidizing agent solution in oxidizing agent solution storage tank 207 is directed to oxidizing agent solution entrance 205 again, again enter in oxidation and denitration demercuration section 200, form oxidant circulation loop.
As shown in Figure 1, flue gas distributor 203 is sandwich construction, evenly offers pore on flue gas distributor 203, each layer of staggered being plugged in oxidation and denitration demercuration section 200 of flue gas distributor.Certainly, in other specific embodiments, flue gas distributor can be also one deck structure, repeats no more herein.
As depicted in figs. 1 and 2, offer even pore 202 on flue gas even distribution device 201, flue gas enters after oxidation and denitration demercuration section 200 pore thus by flue gas even distribution device 201 and sprays, and contacts and reacts with the oxidizing agent solution 204 in oxidation and denitration demercuration section 200.
In oxidation and denitration demercuration section 200, be full of oxidizing agent solution 204, flue gas passes into from oxidation and denitration demercuration section 200 bottoms, by the pore on flue gas even distribution device 201 and flue gas distributor 203, evenly sprayed, in oxidizing agent solution 204, be dispersed into bubble and rise, gas-liquid contact reacts, and oxidized dose of NO in flue gas is oxidized to NO 2, NO 2dissolved absorption, the NO in flue gas xremoved, meanwhile, the Elemental Mercury in flue gas also oxidized agent solution 204 is oxidized to Hg 2+remove.
In the present embodiment use procedure, in oxidation and denitration demercuration section 200, because cigarette speed is higher, bubble forms agitated liquid simultaneously fast, has played stirring action on the one hand, has also increased on the other hand mass-transfer efficiency.The setting of flue gas distributor 203 can make flue gas be uniformly distributed in oxidizing agent solution 204, improves gas-liquid contact effect.
Particularly, in wet electric precipitation section 300, be from top to bottom disposed with: clean exhanst gas outlet 500, pole plate flushing water spray equipment 303, electric field region and flushing water outlet 304, the minus plate 302 that described electric field region is some upright layouts and positive plate 301 alternate intervals are arranged and formed.
In wet desulphurization section 100, be also provided with demister 109, demister 109 is arranged in desulfurizer slurry spraying layer 108 tops, and the water inlet of the flushing water pipeline 110 of demister 109 exports 304 conductings with flushing water and is connected.The droplet that flue gas after desulfurization carries is removed by demister 109, and demister 109 is provided with flushing water pipeline 110, repeats to recycle that the pole plate flushing water of wet electric precipitation section is intermittent that demister is cleaned.
As shown in Figure 1, the wet electric precipitation section 300 inner cathode plates 302 of the present embodiment and the upright interval of positive plate 301 are superimposed to arrange and form described anode and cathode plate, described anode and cathode plate top arranges pole plate flushing water spray equipment 303, on positive plate 301, form smooth uniform water film, minus plate 302 prickle point discharges, can be by PM in flue gas 2.5charged and move to positive plate 301 Deng subparticle, by the moisture film on positive plate 301, washed away and remove, finally realize clean flue gas and discharged by the clean exhanst gas outlet 500 on electric precipitation section 300 tops of wetting.
Exemplary, the electric field of wet electric precipitation section 300 can be made as single-stage or multi-stag.The pole plate flushing water that wet electric precipitation section 300 is used to form moisture film is drawn the flushing water of the rear demister 109 as wet desulphurization section 100 by anode and cathode plate lower end, this flushing water falls into tower prime cement liquid pool 107, after slurries dewatering system, reclaim again, the positive plate flushing water that continues to serve as wet electric precipitation section 300, forms flushing water closed circuit thus.
In the present embodiment, adopt lime stone as desulfurizing agent, NaClO solution is as denitration oxidant.Pending flue gas enters and removes tower from gas approach 400, the desulfurizer slurry first spraying with desulfurizer slurry spraying layer 108 in wet desulphurization section 100 contacts and desulfurization, by entered oxidation and denitration demercuration section 200 by demister 109, then by the pore on the multilayer flue gas distributor 203 of flue gas even distribution device 201 and top setting thereof, be uniformly distributed, and carry out gas-liquid contact and react to remove NO with interior the be full of oxidizing agent solution 204 of oxidation and denitration demercuration section 200 x, the heavy metals such as while Hg are oxidized removing also; Finally, flue gas enters wet electric precipitation section 300, and this section of minus plate 302 and positive plate 301 are spaced, and minus plate 302 prickle point discharges, by PM in flue gas 2.5charged and move to positive plate 301 Deng subparticle, by the uniform water film on positive plate 301, washed away and remove, clean flue gas is discharged by the electric precipitation section 300 clean exhanst gas outlets 500 in top that wet.
The slurries of the tower prime cement liquid pool 107 of wet desulphurization section 100 obtain accessory substance gypsum, the gypsum particle carrying in flue gas after desulfurization and SO after the dehydration of belt dewatering system 3droplets etc. are removed by wet electric precipitation section 300, the original and new PM producing of desulphurization denitration in flue gas 2.5deng particle, also by wet electric precipitation section 300, removed, efficiency of dust collection reaches 97%, and denitration efficiency reaches more than 80%, and desulfuration efficiency reaches more than 95%., demercuration efficiency reaches more than 95% simultaneously.
Embodiment bis-:
The present embodiment proposes the de-PM of a kind of wet type integrated desulfurizing denitration demercuration 2.5removing process, adopt the de-PM of wet type integrated desulfurizing denitration demercuration described in embodiment 1 2.5the tower that removes carry out gas cleaning processing, by reference to the accompanying drawings shown in, comprise the following steps:
Step S101, the wet type desulfurizing stage: pending flue gas is imported in described wet desulphurization section 100 by gas approach 400, start 108 pairs of described pending flue gases of described desulfurizer slurry spraying layer and spray, complete wet type desulfurizing.
Step S102, the denitration demercuration stage: the pending flue gas after desulfurization enters in described oxidation and denitration demercuration section 200, through flue gas even distribution device 201, fully contact and react with the oxidizing agent solution 204 in described oxidation and denitration demercuration section 200 with flue gas distributor 203, the NO in pending flue gas is removed in oxidation xand Hg.
Step S103, de-PM 2.5stage: the pending flue gas after denitration demercuration enters in described wet electric precipitation section 300, the high-tension electricity place forming through described anode and cathode plate 302,301, the PM in pending flue gas 2.5, the subparticle such as gypsum particulate is by charged, and moves to described positive plate 301, by the uniform water film on positive plate 301, washed away and remove.
Step S104, discharges the clean flue gas stage: will take off PM 2.5after pending flue gas by clean fume emission mouth 500, discharge.
Exemplary, the desulfurizing agent that the described desulfurizer slurry spraying layer of the present embodiment adopts is lime stone, the oxidizing agent solution in described oxidation and denitration demercuration section is NaClO solution.Certainly, in other specific embodiments, the desulfurizing agent that described desulfurizer slurry spraying layer adopts can also be quick lime, carbide slag or white clay etc., and the oxidizing agent solution in described oxidation and denitration demercuration section can also be H 2o 2solution or KMnO 4solution.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (7)

1. a wet type integrated desulfurizing denitration demercuration takes off PM 2.5remove tower, it is characterized in that:
Described removing in tower is disposed with from the bottom to top: wet desulphurization section, oxidation and denitration demercuration section and wet electric precipitation section, and gas approach is arranged in described wet desulphurization section, and clean exhanst gas outlet is arranged in described wet electric precipitation section.
2. wet type integrated desulfurizing denitration demercuration as claimed in claim 1 takes off PM 2.5remove tower, it is characterized in that: described wet desulphurization section comprises tower prime cement liquid pool and desulfurizer slurry spraying layer, described desulfurizer slurry spraying layer is arranged on described tower prime cement liquid pool top, and described gas approach channel setting is between described desulfurizer slurry spraying layer and described tower prime cement liquid pool;
Described tower prime cement liquid pool is built-in with oxidation air pipe, described oxidation air pipe is driven by the oxidation fan that is arranged on described wet desulphurization section outside, the below of described oxidation air pipe is provided with jet stirrer, and described jet stirrer leads to and connects by being arranged on the jet pump of described wet desulphurization section outside and the upper guide of described tower prime cement liquid pool;
Described desulfurizer slurry spraying layer is connected with the circulating pump and the described tower prime cement liquid pool that are arranged on described wet desulphurization section outside, forms slurries closed circuit, and the slurries in described tower prime cement liquid pool are imported in described desulfurizer slurry spraying layer.
3. wet type integrated desulfurizing denitration demercuration as claimed in claim 1 takes off PM 2.5remove tower, it is characterized in that: in described oxidation and denitration demercuration section, be from top to bottom disposed with: oxidizing agent solution entrance, flue gas distributor, flue gas even distribution device and oxidizing agent solution outlet, described flue gas even distribution device conducting connects described wet desulphurization section and oxidation and denitration demercuration section.
4. wet type integrated desulfurizing denitration demercuration as claimed in claim 3 takes off PM 2.5remove tower, it is characterized in that: described oxidation and denitration demercuration section outside is also provided with an oxidizing agent solution storage tank, the outlet of described oxidizing agent solution draw with tower in uniform flue gas generation gas-liquid contact reacted oxidizing agent solution to described oxidizing agent solution storage tank, oxidizing agent solution in described oxidizing agent solution storage tank is directed to described oxidizing agent solution entrance again, again enter in described oxidation and denitration demercuration section, form oxidant circulation loop.
5. wet type integrated desulfurizing denitration demercuration as claimed in claim 3 takes off PM 2.5remove tower, it is characterized in that: described flue gas distributor is single or multiple lift structure, on described flue gas distributor, evenly offer pore.
6. the wet type integrated desulfurizing denitration demercuration as described in claim 1 to 5 any one claim takes off PM 2.5remove tower, it is characterized in that: in described wet electric precipitation section, be from top to bottom disposed with: clean exhanst gas outlet, pole plate flushing water spray equipment, electric field region and flushing water outlet, described electric field region is formed by minus plate and the arrangement of positive plate alternate intervals of some upright layouts, and the electric field region of described wet electric precipitation section can be made as single-stage or multistage.
7. wet type integrated desulfurizing denitration demercuration as claimed in claim 6 takes off PM 2.5remove tower, it is characterized in that: in described wet desulphurization section, be also provided with demister, described demister is arranged in desulfurizer slurry spraying layer top, the water inlet of the flushing water pipeline of described demister and described wet electric precipitation section pole plate flushing water outlet guide lead to and connect, mist eliminator flushing water falls into after slurry pool, via after the dehydration of slurries dewatering system, continue to be back to wet electric precipitation section pole plate flushing water again, form thus flushing water closed circuit.
CN201320684929.1U 2013-10-30 2013-10-30 Wet-type integrated removal tower for desulfurization, denitration, demercuration, and PM2.5 removal CN203525547U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104014217A (en) * 2014-06-18 2014-09-03 上海龙净环保科技工程有限公司 System and process for removing PM2.5 through wet flue gas demercuration and cooperative desulfurization
CN105056678A (en) * 2015-08-11 2015-11-18 孙立刚 Flue gas cleaner with integration of desulfurization, denitrification, mercury removal and dust removal
CN105080311A (en) * 2015-07-28 2015-11-25 浙江天蓝环保技术股份有限公司 Super-clean exhausting integral tower and treating technology for coal-fired boiler exhaust gas
CN106064016A (en) * 2016-08-08 2016-11-02 辽宁信威环保科技有限公司 The ultra-clean dust removal integrated plant of exhuast gas desulfurization denitration
CN106582236A (en) * 2016-12-09 2017-04-26 江苏方天电力技术有限公司 Method and device for combined removal of SO2/NOx/PM2.5/Hg in coal-fired smoke

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104014217A (en) * 2014-06-18 2014-09-03 上海龙净环保科技工程有限公司 System and process for removing PM2.5 through wet flue gas demercuration and cooperative desulfurization
CN104014217B (en) * 2014-06-18 2016-03-23 上海龙净环保科技工程有限公司 A kind of wet flue gas demercuration coordinated desulfurization take off system and the technique of PM2.5
CN105080311A (en) * 2015-07-28 2015-11-25 浙江天蓝环保技术股份有限公司 Super-clean exhausting integral tower and treating technology for coal-fired boiler exhaust gas
CN105056678A (en) * 2015-08-11 2015-11-18 孙立刚 Flue gas cleaner with integration of desulfurization, denitrification, mercury removal and dust removal
CN106064016A (en) * 2016-08-08 2016-11-02 辽宁信威环保科技有限公司 The ultra-clean dust removal integrated plant of exhuast gas desulfurization denitration
CN106582236A (en) * 2016-12-09 2017-04-26 江苏方天电力技术有限公司 Method and device for combined removal of SO2/NOx/PM2.5/Hg in coal-fired smoke

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