CN205925418U - High -efficient desulfurization of flue gas is dust collector in coordination - Google Patents

High -efficient desulfurization of flue gas is dust collector in coordination Download PDF

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Publication number
CN205925418U
CN205925418U CN201620331700.3U CN201620331700U CN205925418U CN 205925418 U CN205925418 U CN 205925418U CN 201620331700 U CN201620331700 U CN 201620331700U CN 205925418 U CN205925418 U CN 205925418U
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China
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desulfurization
absorption tower
flue gas
coordination
dust
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CN201620331700.3U
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汤乐萍
王圣
邵小珍
李�诚
盛伟
辛强
王秀光
康晓燕
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TONGFANG ENVIRONMENT CO Ltd
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TONGFANG ENVIRONMENT CO Ltd
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Abstract

High -efficient desulfurization of flue gas is dust collector in coordination relates to the gas cleaning field. The utility model discloses an absorption tower. Structurally, it puts the desulfurization increase unit by compriseing tray and desulfurization flue to lie in in the absorption tower between top and the adsorption chamber of flue gas entry. The rectangular module no. 1 that the tray was placed by a plurality of levels is arranged to assemble and is constituteed to it becomes a plurality of chunks to support the interval by a supporting beam, the desulfurization flue is arranged to assemble by a plurality of horizontal arrangement's rectangular module no. 2 and is constituteed, and the outline of tray and desulfurization flue matches with the shape of absorption tower inner chamber. Compared with the prior art, the utility model discloses an increase the intensity that acid gas and dust contacted, flow field distribution situation in the absorption tower is optimized in order to fall low power consumption simultaneously to improvement desulfurization dust collection efficiency.

Description

Flue gas high-efficiency desulfurization works in coordination with dust arrester
Technical field
This utility model is related to filed of flue gas purification, the sour gas sulfur dioxide particularly in removing flue gas, hydrochloric acid, fluorine Change hydrogen etc. and the flue gas high-efficiency desulfurization of dust works in coordination with dust arrester.
Background technology
Limestone/lime-gypsum method desulfurization technology is that in current sulfur method, technology is the most ripe, practical application is most, fortune The most stable of sulfur removal technology of row situation.Sweetening process is gas liquid reaction, and its desulphurization reaction speed is fast, and desulfuration efficiency is high, calcium utilization Rate is high, when calcium sulfur ratio is equal to 1, can reach more than 90% desulfuration efficiency, and the flue gas being suitable for large-scale coal-fired power station boiler takes off Sulfur.
In prior art, limestone/lime-gypsum method desulfurization technology is in absorption tower interior suction with Calx or lime stone slurry Receive the SO of flue gas2In sour gas, dust etc., it is divided into absorption and two stages of oxidation.First absorb and generate calcium sulfite, then will It is Gypsum Fibrosum that calcium sulfite oxidation becomes calcium sulfate.Absorption tower is the nucleus equipment in Wet Flue Gas Desulfurization Technique, and alkaline slurry passes through circulation It is pumped to the nozzle of the spraying layer of differing heights arrangement in absorption tower, serosity forms substantial amounts of droplet simultaneously after spraying by nozzle Falls downward, contains pollutant acid gas, the flue gas adverse current of dust flows up, during this period, gas-liquid two-phase is fully contacted simultaneously And the sour gas containing in flue gas, dust etc. are carried out reacting, washs.
China's atmosphere pollutants emission standardses increasingly stringent, needs to improve traditional limestone-gypsum method cigarette further at present The desulfurization dust-removing efficiency of desulfurization technology.But traditional limestone-gypsum method flue gas desulfurization technique is primarily present problem below:
1. meet existing SO for desulfuration efficiency2Discharge is less than 35mg/Nm3Requirement, conventional lime desulphurizing flue gas by lime-gypsum method The number of plies that technology mainly passes through to increase spraying layer is realized, and the increase of the spraying layer number of plies can cause the increase of desulphurization system power consumption.
2. in absorption tower, flue gas bias current is serious.On the one hand, because China's coal-burning power plant's pollutant control is started late, in combustion Coal-fired plant does not reserve sufficient space to pollution abatement equipment in building, and leads to newly-built or transformation wet desulphurization equipment flue cloth Put unreasonable, flue arrangement is difficult to meet flow Field Design basic demand, it is serious that flue gas enters bias current before absorption tower through flue.Separately On the one hand, wet desulphurization device commonly used single column single entry intake method, which can cause flue gas along the flow field of tower section Inequality, forms high velocity smoke flow field in entrance offside, causes flue gas to reach the Flow Field Distribution bias current of first floor spraying layer porch seriously, Make the liquid-gas ratio away from absorption tower entrance area relatively low, and, flue gas bias current meeting higher near the liquid-gas ratio of absorption tower entrance area Cause desulfurizer desulfurization and efficiency of dust collection to decline, the problems such as power consumption is high.
3., to tiny dust, liquid droplet capture effect is poor for traditional desulfurizer, and after desulfurization, the very difficult satisfaction of dust concentration is less than 10mg/Nm3Requirement, carry the substantial amounts of droplet containing Gypsum Fibrosum in the flue gas of soot emissions simultaneously secretly, thus around chimney Can be landed substantial amounts of " gypsum rain ", causes secondary pollution to power plant's surrounding.
4. the bad adaptability of pair sulphur coal.For current desulfurization technology, hollow-spraying-tower technology cannot adapt to high-sulfur The situation of coal.Currently for sulphur coal desulfurization technology based on the technology such as double tower Two-way Cycle, single column Two-way Cycle, but relatively throw Money, operating cost are all higher.
Content of the invention
For above-mentioned of the prior art not enough and defect, mesh of the present utility model is to provide a kind of flue gas high-efficiency desulfurization association Same dust arrester.The intensity that it is contacted by increase sour gas and dust, improves desulfurization dust-removing efficiency, optimizes simultaneously and absorbs Flow Field Distribution situation in tower is to reduce power consumption.
In order to reach foregoing invention purpose, the technical solution of the utility model is realized as follows:
Flue gas high-efficiency desulfurization works in coordination with dust arrester, and it includes absorption tower.Absorb tower side wall and be provided with smoke inlet, absorb In tower, above smoke inlet, it is sequentially provided with adsorption chamber and the whitewashing main pipe of multiple-layer horizontal arrangement from bottom to up, each whitewashing main pipe Bottom is provided with the how evenly distributed nozzle of number, and the top on absorption tower is provided with exhanst gas outlet.Absorption tower inner bottom part is provided with stock tank, stock tank In be equipped with the oxidation air of agitator and horizontal positioned.Absorption tower lower sides connect multiple circulation slurry pumps and pass through circulation respectively Slurry pipe is connected with each whitewashing main pipe.It is structurally characterized in that, is located at top and the adsorption chamber of smoke inlet in described absorption tower Between be equipped with the desulfurization synergistic unit being made up of pallet and desulfurization duct.Described pallet is by the rectangular module one of multiple horizontal positioned Arrangement is assemblied to form, and is partitioned into multiple chunks by support beam support, and described desulfurization duct is by multiple horizontally arranged rectangular mold Block two arrangement is assemblied to form, the form fit of the outline of pallet and desulfurization duct and absorption tower inner chamber.
Work in coordination with dust arrester in above-mentioned flue gas high-efficiency desulfurization, the material of described rectangular module two adopts PP material one to become Type.
Work in coordination with dust arrester in above-mentioned flue gas high-efficiency desulfurization, the material of described rectangular module one adopts stainless steel, Each chunk is held liquid dish groove hole, tray slot and is held liquid disk and form by evenly distributed, and holding liquid dish groove hole aperture is Φ 35.
This utility model, due to employing said structure, has advantages below and beneficial effect compared with the prior art:
1. increased desulfurization synergistic unit in absorption tower, that is, optimize the Flow Field Distribution situation in absorption tower, eliminate again Flue gas Biased flow phenomenon, makes absorption tower flow field reach perfect condition to realize design load.
2. the serosity spraying from spraying layer can be formed on pallet holds liquid layer, forms liquid film and bubble on desulfurization duct Layer, after the gas containing pollutant component passes through desulfurization synergistic unit from bottom to top, the mass transfer of gas-liquid two-phase is in desulfurization synergistic unit On can be strengthened, thus improving the removal efficiency of oxysulfide.
3. the removal efficiency of fine dusts in absorption tower can be effectively improved.Gas containing pollutant passes through desulfurization synergistic unit On hold liquid layer after, the dust carried secretly in gas can strengthen the probability contacting with liquid phase, improves the probability that dust is captured, dust Removal efficiency can bring up to more than 85% by conventional 60%.
4. pallet adopts stainless steel, and desulfurization duct adopts PP material.There is long service life, corrosion-resistant, wear-resistant Feature, be particularly suitable for application to the purification of the dusty gass of acid gas-containing, dust granules.
5. due to gas-liquid two-phase, the contact on desulfurization synergistic unit can be strengthened, and can effectively reduce the liquid gas on absorption tower Than.Under reaching identical removal efficiency, this utility model power consumption can reduce by 10 ~ 15% than conventional hollow-spraying-tower.
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Brief description
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is the structure top view of pallet in this utility model;
Fig. 3 is the structural representation of arbitrary chunk in this utility model pallet;
Fig. 4 is the A direction view of Fig. 3.
Specific embodiment
Referring to Fig. 1 to Fig. 4, this utility model flue gas high-efficiency desulfurization works in coordination with dust arrester, and it includes absorption tower 2, absorption tower 2 side walls are provided with smoke inlet 1.In absorption tower 2, above smoke inlet 1, it is sequentially provided with adsorption chamber 8 and multiple-layer horizontal from bottom to up The whitewashing main pipe 9 of arrangement, the bottom of each whitewashing main pipe 9 is provided with the how evenly distributed nozzle 10 of number, and the top on absorption tower 2 is provided with cigarette Gas outlet 11.Absorption tower 2 inner bottom part is provided with stock tank 12, is equipped with the oxidation air 13 of agitator 14 and horizontal positioned in stock tank 12. Absorption tower 2 lower sides are connected multiple circulation slurry pumps 15 and are connected with each whitewashing main pipe 9 by recycle slurry liquid pipe 16 respectively.Inhale Receive to be located in tower and be equipped with, between the top of smoke inlet 1 and adsorption chamber 8, the desulfurization synergistic list being made up of pallet 3 and desulfurization duct 5 Unit.Described pallet 3 is assemblied to form by rectangular module 1 arrangement of multiple horizontal positioned, and is partitioned into many by support beam 17 support Individual chunk.The material of rectangular module 1 adopts stainless steel, and each chunk holds liquid dish groove hole 18, tray slot by evenly distributed 19 and hold liquid disk 20 and form, holding liquid dish groove hole 18 aperture is Φ 35.Desulfurization duct 5 is by multiple horizontally arranged rectangular modules 26 Arrangement is assemblied to form, and the material of rectangular module 26 is integrally formed using PP material.The outline of pallet 3 and desulfurization duct 5 and suction Receive the form fit of tower 2 inner chamber.
During utility model works, the process of absorption occurs in absorption tower 2.Absorbing liquid for absorbing is stored in absorption In the stock tank 12 of tower 2 bottom.Air enters stock tank 12 by oxidation air 13, promotes to absorb SO2Absorbing liquid be oxidized to sulfur Sour calcium, agitator 14 is used for preventing solid particle from precipitating.The absorbent solution of stock tank 12 is by each circulating pump 15 through recycle slurry liquid pipe 16 enter the whitewashing main pipe 9 being arranged on absorption tower 2 top, and are sprayed by the nozzle 10 being arranged in serosity main pipe 9.Spray liquid Fall into desulfurization duct 5 and the pallet 3 of desulfurization synergistic unit through adsorption chamber 8.In desulfurization synergistic unit, desulfurization duct 5 top can shape Become liquid film and bubble layer 7, the pallet 3 of desulfurization synergistic unit can be formed and hold liquid layer, the liquid film of formation and hold liquid layer can be effectively The mass transfer surfaces increasing flue gas with serosity are amassed.Non-purified flue gas enters absorption tower 2 from smoke inlet 1, flows up into desulfurization The pallet 3 of synergy unit and desulfurization duct 5, the flue gas of acid gas-containing and dust is able to portion after passing through pallet 3 and desulfurization duct 5 Divide removing.Flue gas can obtain rectification after passing through pallet 3 and desulfurization duct 5 simultaneously, dust while inertia, diffusion again not It is subject to the disturbance of vacuole disconnectedly, make dust constantly change direction, increased the touch opportunity of sour gas, dust and liquid, make Flue gas is uniformly distributed, and enters adsorption chamber 8, contacts again with absorbing liquid, desulphurization reaction occurs, the flue gas after purification is through exhanst gas outlet 11 enter air.

Claims (3)

1. flue gas high-efficiency desulfurization works in coordination with dust arrester, and it includes absorption tower(2), absorption tower(2)Side wall is provided with smoke inlet (1), absorption tower(2)Interior, smoke inlet(1)Top is sequentially provided with adsorption chamber from bottom to up(8)Whitewashing with multiple-layer horizontal arrangement Main pipe(9), main pipe of respectively whitewashing(9)Bottom be provided with the how evenly distributed nozzles of number(10), absorption tower(2)Top be provided with flue gas Outlet(11), absorption tower(2)Inner bottom part is provided with stock tank(12), stock tank(12)In be equipped with agitator(14)Oxidation with horizontal positioned Airduct(13), absorption tower(2)Lower sides connect multiple circulation slurry pumps(15)Pass through recycle slurry liquid pipe respectively(16)With each spray Slurry main pipe(9)Be connected it is characterised in that:Described absorption tower(2)Interior positioned at smoke inlet(1)Top and adsorption chamber(8)It Between be equipped with by pallet(3)And desulfurization duct(5)The desulfurization synergistic unit of composition, described pallet(3)Square by multiple horizontal positioned Shape module one(4)Arrangement is assemblied to form, and by support beam(17)Support is partitioned into multiple chunks, described desulfurization duct(5)By many Individual horizontally arranged rectangular module two(6)Arrangement is assemblied to form, pallet(3)And desulfurization duct(5)Outline and absorption tower(2) The form fit of inner chamber.
2. flue gas high-efficiency desulfurization according to claim 1 work in coordination with dust arrester it is characterised in that:Described rectangular module two (6)Material be integrally formed using PP material.
3. flue gas high-efficiency desulfurization according to claim 1 or claim 2 work in coordination with dust arrester it is characterised in that:Described rectangular module one (4)Material adopt stainless steel, each chunk holds liquid dish groove hole by evenly distributed(18), tray slot(19)With hold liquid disk (20)Composition, holds liquid dish groove hole(18)Aperture is Φ 35.
CN201620331700.3U 2016-04-20 2016-04-20 High -efficient desulfurization of flue gas is dust collector in coordination Active CN205925418U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107303465A (en) * 2016-04-20 2017-10-31 同方环境股份有限公司 A kind of flue gas high-efficiency desulfurization cooperates with dust arrester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107303465A (en) * 2016-04-20 2017-10-31 同方环境股份有限公司 A kind of flue gas high-efficiency desulfurization cooperates with dust arrester

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