CN205517233U - Absorption tower that high -efficient desulfurization was in coordination removed dust - Google Patents

Absorption tower that high -efficient desulfurization was in coordination removed dust Download PDF

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Publication number
CN205517233U
CN205517233U CN201620280299.5U CN201620280299U CN205517233U CN 205517233 U CN205517233 U CN 205517233U CN 201620280299 U CN201620280299 U CN 201620280299U CN 205517233 U CN205517233 U CN 205517233U
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CN
China
Prior art keywords
gas
absorption tower
liquid
dust
spray equipment
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Expired - Fee Related
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CN201620280299.5U
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Chinese (zh)
Inventor
戴尚莉
刘晓敏
张畏
石磊
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HANGZHOU BEISITE ENERGY-SAVING AND ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
Original Assignee
HANGZHOU BEISITE ENERGY-SAVING AND ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
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Priority to CN201620280299.5U priority Critical patent/CN205517233U/en
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Publication of CN205517233U publication Critical patent/CN205517233U/en
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Abstract

The utility model relates to an absorption tower that high -efficient desulfurization was in coordination removed dust. The device includes absorption tower tower body, agitating unit, thick liquid pond, entry flue, exhaust pass, gas -liquid fairing, spray set, gas -liquid circular cowling and defogging device. The utility model discloses an optimizing the absorption tower structure, increasing auxiliary assembly and realize desulfurization dust removal integration, the desulfurization dust collection efficiency is imitated with carrying to the integration, reaches main smoke pollutants emission values such as effective reduction smoke and dust (including PM2.5), SO2 and SO3 in an absorption tower to make its mesh that reaches SO2 and the ultralow emission standard of dust.

Description

A kind of absorption tower of efficient coordinated desulfurization dedusting
Technical field
This utility model relates to a kind of absorption tower, the absorption tower of a kind of efficient coordinated desulfurization dedusting.
Background technology
According to china natural resources present situation, China's energy consumption structure based on coal considerably long a section in future Will not change in period.The substantial amounts of flue dust of discharge, sulfur dioxide (SO in coal-fired process2), nitrogen oxidation Thing (NOX) and the multiple pollutant such as heavy metal, also it is fine particulates (PM2.5) and precursor such as SO thereof2、 NOXOne of main source etc. atmosphere pollution.National Development and Reform Commission, Environmental Protection Department, national energy Three ministries and commissions of office combine in December in 2015 and issue and " implement in full coal-burning power plant's minimum discharge and energy-conservation change on the 11st Make programme of work " propose, to the year two thousand twenty, all coal-burning power plants possessing transformation condition, the whole nation strive realizing surpassing Low emission, i.e. under the conditions of benchmark oxygen content 6%, sulfur dioxide, nitrogen oxides, flue dust minimum discharge concentration Respectively no higher than 35,50,10mg/Nm3, the environmental protection pressure of coal unit strengthens further.Smoke abatement, SO2、 NOXOutside main flue gas pollutant, SO3The pollutant that this concentration is less have caused people extensively to pay attention to the most, SO3Extremely corrosive, not only to environment, bring the biggest hidden danger also to follow-up equipment safe operation, The discharge standard that the U.S. has been correlated with is put into effect, and the tightest state standard is 0.6mg/Nm3, and China does not has relevant yet Standard.
Control to pollutant various in flue gas, the independent removing sulfuldioxide of the most employings.Along with pollutant control Being continuously increased of production of hybrid seeds class, causes pollutant purification equipment constantly to be expanded, no matter invest operating cost or Cleaning system complexity all suffers from a great difficult problem.For coal-fired power station boiler, multiple pollutant is collaborative de- Except technology (will individually desulphurization and denitration and dedusting three covering device than the combination of single Pollutant Control Technology Combine) there is much higher cost performance, not only economy has superiority, and for system stability Speech also tool is of great significance.
At present, China power station is mounted with limestone-gypsum desulphurization system the most in a large number.Limestone-gypsum is wet Method desulfurization technology is to be that desulfurization absorbent is in absorption tower and SO with the limestone (calcium carbonate) of alkalescence2Reaction is raw Become calcium sulfite, and make its technique eventually becoming Gypsum Fibrosum (calcium sulphate dihydrate) by Oxidation.Conventional Desulfuration absorbing tower stress SO2Removing, to dust and SO3Removal efficiency relatively low, generally only 50% He 30%.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of simple in construction, can efficient coordinated desulfurization The absorption tower of dedusting.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is as follows:
The absorption tower of a kind of efficient coordinated desulfurization dedusting, including absorption tower tower body, agitating device, stock tank, enters Mouth flue, exhaust pass, gas-liquid fairing, spray equipment, gas-liquid collector ring and demister, stock tank, Agitating device is separately positioned on the bottom in absorbing tower body, and gas approach is arranged on the middle part of absorption tower tower body, Gas-liquid fairing is arranged on above gas approach, if gas-liquid fairing is arranged over dried layer spray equipment, Being provided with gas-liquid collector ring below every layer of spray equipment, spray equipment is arranged over demister, and exhaust pass sets Putting the top at absorption tower tower body, demister is at least 1800mm, demister with the spacing of spray equipment It is at least the spacing of 2000mm, gas-liquid fairing and gas approach upper end extremely with the spacing of exhaust pass lower end Being 1000mm less, gas-liquid fairing is at least 1000mm with the spacing of spray equipment.
This utility model, by optimizing absorption tower structure, increases auxiliary equipment and realizes desulphurizing and dust-removing integral, Integrated and carry effect desulfurization dust-removing efficiency, reach effectively to reduce flue dust (containing PM2.5), SO in an absorption tower2、 And SO3Etc. main flue gas pollutant emission value, and reach SO2Purpose with dust minimum discharge standard.
As preferably, spray equipment is at least two-layer.Having an advantage in that, spray equipment ensure that spray covers Rate, nozzle atomization effect simultaneously is more preferable, and the dust of more than particle diameter PM5 can be realized 100% removal efficiency.
As preferably, the width of gas-liquid collector ring is at least 500mm.Have an advantage in that, be further ensured that flue gas Be evenly distributed.
This utility model compared with the existing technology has the following advantages and effect:
1, owing to this utility model is by optimizing absorption tower structure, increase auxiliary equipment and realize desulfurization and dedusting one Body, desulfuration efficiency is not less than 99%, and efficiency of dust collection is not less than 90%, SO2The most permissible with the concentration of emission of dust Reaching minimum discharge standard, i.e. this utility model can make multiple major pollutants disposably remove, and reaches super Low emission standard: dust concentration discharge is less than 10mg/Nm3, SO2Concentration of emission is less than 35mg/Nm3
2, owing to this utility model is based on built wet method fume desulfurizing system, by optimizing absorption tower structure, Increase auxiliary equipment and realize desulphurizing and dust-removing integral, there is simplification of flowsheet, save equipment investment, account for The advantages such as ground area is little.
3, it is provided with gas-liquid fairing due to this utility model, it is possible to make smoke distribution uniform, it is to avoid bias current is asked Topic, for follow-up spray with except mist provides more excellent flow field condition, the beneficially performance boost of follow-up equipment.
4, spray to downwards gas-liquid fairing from spray equipment due to absorbent of the present utility model, absorbent and Flue gas forms the serosity froth bed of certain altitude on gas-liquid fairing, expands gas-to-liquid contact face, gas-liquid It is fully contacted, enhances SO2To the mass transfer of serosity, improve absorbent utilization rate, strengthen fine powder simultaneously The capture effect of dirt.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below by right In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that below, Accompanying drawing in description is only embodiments more of the present utility model, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of this utility model embodiment 1.
Label declaration:
1, gas-liquid fairing 2, spray equipment 3, gas-liquid collector ring
4, demister 5, gas approach 6, exhaust pass
7, stock tank 8, agitating device 9, absorption tower tower body
Detailed description of the invention
Being described in further detail this utility model below in conjunction with embodiment, following example are to this reality With novel explanation, this utility model is not limited to following example.
Embodiment 1:
As it is shown in figure 1, the present embodiment by absorption tower tower body 9, agitating device 8, stock tank 7, gas approach 5, Exhaust pass 6, gas-liquid fairing 1, spray equipment 2, gas-liquid collector ring 3 and demister 4 form. Exhaust pass 6 is arranged on the top of absorption tower tower body 9;Demister 4 is arranged on below exhaust pass 6; Spray equipment 2 is arranged on below demister 4, and in the present embodiment, spray equipment 2 is 4 layers;Gas-liquid Collector ring 3 is arranged on below every layer of spray equipment 2;It is provided with gas below spray equipment 2 and gas-liquid collector ring 3 Liquid fairing 1;Being provided with gas approach 5 below gas-liquid fairing 1, gas approach 5 is positioned at absorbing tower The medium position of body 9;Agitating device 8 and stock tank 7 are separately positioned on the bottom of absorption tower tower body 9.
Demister 4 is at least 1800mm, demister 4 and exhaust pass 6 with the spacing of spray equipment 2 The spacing of lower end is at least 2000mm.Gas-liquid fairing 1 is at least with the spacing of gas approach 5 upper end 1000mm, gas-liquid fairing 1 is at least 1000mm with the spacing of spray equipment 2.Through test, meet with During upper pitch requirements, there is preferable rectification effect, and then there is more preferable desulfurization and dedusting effect.
Gas-liquid fairing 1, uses the custom design that a tower is a set of, is arranged in the cross section on whole absorption tower, Making flue gas be evenly distributed on whole cross section after entering absorption tower, flue gas flows from the bottom up through holding liquid layer, Serosity sprays down liquid layer from holding, and flue gas and serosity occur strong blending holding liquid layer surface, have the biggest Gas-to-liquid contact interface.To SO2While having fabulous absorbability, the bubble level pair of liquid layer is held in potentiation Flue dust in flue gas also has trapping effect, especially considerably increases the capture rate of fine solid particle, to particle diameter The dust of more than PM2.5 can realize 75% removal efficiency.On the other hand, also stabilize the uniformity of flue gas, more have It is beneficial to follow-up spray-absorption and flue gas except mist.
Spray equipment 2 is between gas-liquid fairing 1 and demister 4.Spray equipment 2 ensure that spray Drenching coverage rate, nozzle atomization effect simultaneously is more preferable, and the dust of more than particle diameter PM5 can be realized 100% removal efficiency.
Gas-liquid collector ring 3, is arranged at below every layer of spray equipment 2.Arrange below every layer of spray equipment 2, Flue gas can be stoped to climb wall short circuit, make flue gas contact with sprayed slurry more complete.If do not considered, wet flue gas is carried secretly Gypsum solid, three of the above device can ensure that the efficiency of dust collection on absorption tower reaches more than 95%.
Demister 4, between absorption tower exhaust pass 6 and spray equipment 2, and and spray equipment 2 between Away from not less than 1800mm, with absorption tower exhaust pass 6 lower end spacing not less than 2000mm.Demister droplet Concentration can ensure that at ≯ 20mg/Nm3, effectively reducing the Gypsum Fibrosum carrying amount in flue gas, outlet droplet is dense simultaneously The reduction of degree also reduces the SO of wet flue gas3Acid mist concentration.
Stock tank 7 needs absorption tower agitating device 8, arranges apparatus of oxygen supply according to difference oxidation demand simultaneously.
Running of the present utility model is as follows:
Former flue gas containing pollutant enters absorption tower by gas approach 5, from lower to upper by gas-liquid rectification Device 1, it is whole in gas-liquid that absorbent sprays to downwards gas-liquid fairing 1, absorbent and flue gas from spray equipment 2 Forming the serosity froth bed of certain altitude on stream device 1, expand gas-to-liquid contact face, gas-liquid is fully contacted, Enhance SO2To the mass transfer of serosity, improve absorbent utilization rate, strengthen fine dust (PM2.5) simultaneously Trapping effect.Additionally, gas-liquid fairing 1 makes smoke distribution uniform, it is to avoid bias current problem, for follow-up Spray and except mist provides more excellent flow field condition, the beneficially performance boost of follow-up equipment.
SO2And dust enters stock tank 7, sulphite SO with serosity3 2-It is further oxidized to sulphuric acid in stock tank 7 Salt SO4 2-.Former flue gas arrives spray region after gas-liquid fairing 1, through again contacting with sprayed slurry After fully absorbing, forming the saturated wet flue gas carrying a large amount of droplet, wet flue gas is finally by demister 4.Remove Mist device 4 carries the concentration of droplet and reduces SO in wet flue gas further by reducing wet flue gas3Dense with dust Degree.
Embodiment 2:
The present embodiment is similar to Example 1, and it the difference is that only:
1, spray equipment 2 at least two-layer.Through test, guarantee spray during spray equipment 2 at least two-layer Drench coverage rate, it is achieved dust 100% removal efficiency to more than particle diameter PM5.
2, gas-liquid collector ring 3 is arranged at below every layer of spray equipment 2, and the width of gas-liquid collector ring 3 is not less than 500mm。
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components Shape, be named title etc. can be different.All according to structure, feature and the principle described in this utility model inventional idea The equivalence done or simple change, be all included in the protection domain of this utility model patent.This utility model Described specific embodiment can be made various amendment or supplement by person of ordinary skill in the field Or use similar mode to substitute, without departing from structure of the present utility model or surmount the claims Defined scope, all should belong to protection domain of the present utility model.

Claims (3)

1. an absorption tower for efficient coordinated desulfurization dedusting, is characterized in that: include absorption tower tower body, stirring dress Put, stock tank, gas approach, exhaust pass, gas-liquid fairing, spray equipment, gas-liquid collector ring and remove Mist device, described stock tank, agitating device be separately positioned on the bottom in absorbing tower body, and gas approach sets Putting the middle part at absorption tower tower body, gas-liquid fairing is arranged on above gas approach, on gas-liquid fairing If side is provided with dried layer spray equipment, it is provided with gas-liquid collector ring below every layer of spray equipment, sets above spray equipment Demister, exhaust pass is had to be arranged on the top of absorption tower tower body, described demister and spray equipment Spacing be at least 1800mm, demister is at least 2000mm with the spacing of exhaust pass lower end, described Gas-liquid fairing is at least 1000mm, gas-liquid fairing and spray equipment with the spacing of gas approach upper end Spacing be at least 1000mm.
The absorption tower of a kind of efficient coordinated desulfurization dedusting the most according to claim 1, is characterized in that: institute The spray equipment stated is at least two-layer.
The absorption tower of a kind of efficient coordinated desulfurization dedusting the most according to claim 1, is characterized in that: institute The width of the gas-liquid collector ring stated is at least 500mm.
CN201620280299.5U 2016-04-05 2016-04-05 Absorption tower that high -efficient desulfurization was in coordination removed dust Expired - Fee Related CN205517233U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620280299.5U CN205517233U (en) 2016-04-05 2016-04-05 Absorption tower that high -efficient desulfurization was in coordination removed dust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620280299.5U CN205517233U (en) 2016-04-05 2016-04-05 Absorption tower that high -efficient desulfurization was in coordination removed dust

Publications (1)

Publication Number Publication Date
CN205517233U true CN205517233U (en) 2016-08-31

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Family Applications (1)

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Country Status (1)

Country Link
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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Absorption tower that high -efficient desulfurization was in coordination removed dust

Effective date of registration: 20170607

Granted publication date: 20160831

Pledgee: Hangzhou United Rural Commercial Bank, Limited by Share Ltd, Shiqiao subbranch

Pledgor: Hangzhou Beisite Energy-Saving and Environment Protection Technology Co., Ltd.

Registration number: 2017330000048

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160831

Termination date: 20200405