CN104437070A - Water film desulfurization spray tower and water film desulfurization method - Google Patents
Water film desulfurization spray tower and water film desulfurization method Download PDFInfo
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- CN104437070A CN104437070A CN201410715037.2A CN201410715037A CN104437070A CN 104437070 A CN104437070 A CN 104437070A CN 201410715037 A CN201410715037 A CN 201410715037A CN 104437070 A CN104437070 A CN 104437070A
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Abstract
The invention discloses a water film desulfurization spray tower and a water film desulfurization method. The water film desulfurization spray tower comprises a spray tower body, wherein the top end of the upper part of the spray tower body is provided with a gas outlet, and the lower part of the spray tower body is provided with a sedimentation basin; a gas intake pipe extends fromthe inner part of the sedimentation basin; the gas outlet part in the spray tower body is also provided with a spray system; a circulation pump outside the spray tower body is connected with the spray system and the sedimentation basin via pipelines; a water film filtering system is arranged between the spray system and the sedimentation basin, is connected by a plurality of water film filtering layers sequentially, and is fixed in the spray tower body. According to the invention, a desulfurization agent is distributed on the water film, so that the surface area of the desulfurization agent and the contact area of the desulfurization agent and waste gas are enlarged, so that waste gas and the desulfurization agent can in full contact reaction; a plurality of water film filtering layers can perform filtering reaction on waste gas simultaneously; compared with the multi-time repeated desulfurization reaction to one stream of waste gas, the desulfurization efficiency is higher, and the desulfurization effect is more obvious.
Description
Technical field
The present invention relates to a kind of spray column, a kind of method of particularly moisture film desulfuration spray tower of using for thermal power plant and moisture film desulfurization.
Background technology
China is coal-fired big country, and in primary energy composition, fire coal accounts for 75%, and 90% of SO2 emissions comes from burning of coal.How to realize the energy effectively utilize, economical increase fast while reduce pollution to ecological environment, be the key issue that China's economy and society harmonious development needs to solve.Will prevent and treat sulfur dioxide pollution in China, the discharge controlling the three large exhaust gas source such as thermal power plant, Industrial Boiler and stove is crucial, and exhuast gas desulfurization technology (FGD) is the main path solving pollution from exhaust emission.
As everyone knows, coal is the main fuel of thermal power generation, containing a large amount of element sulphurs in coal, can produce a large amount of sulfide during burning.At present in this field, the desulfur technology mainly wet method exhuast gas desulfurization of employing.Due to spray column have internals less, be not easy the advantages such as fouling, meanwhile, spray column can make waste gas and washing, and slurries are reverse contacts, and are more conducive to the absorption to sulfide.Therefore spray column is the main flow tower of wet desulfurizing process.
Spray column is applied wider in exhaust-gas treatment field, existing spray column is due to the defect of structure, spray thorough not, desulfuration efficiency is low, for the waste gas that composition is comparatively complicated, as sweetening process, spray only by spray column, its more difficult standard of externally being discharged to country by waste gas filtering, so be transformed into this system of the waste gas crossed through spray column spray cleaning the effective means addressed this problem.
How to make the efficient desulfurization process of spray column high, more thoroughly effectively, reaching waste gas filtering to the external standard of discharging of country is need the problem of solution badly in desulfurization.
Summary of the invention
Be directed to above-mentioned deficiency, the object of the present invention is to provide a kind of method of moisture film desulfuration spray tower and moisture film desulfurization, spray thorough not in exhaust-gas treatment field to solve spray column in prior art, the problem that desulfuration efficiency is low.
For achieving the above object, the invention provides a kind of moisture film desulfuration spray tower, comprise spray column body, the top, top of described spray column body is provided with gas outlet, below is sedimentation basin, sedimentation basin inside extends outward one section of air inlet pipe, the gas outlet place of described pouring tower body interior is also provided with spray system, the circulating pump of described spray column body exterior connects spray system and sedimentation basin by pipeline, water film filtering system is provided with between described spray system and sedimentation basin, described water film filtering system is connected successively by some water film filtering layers, and be fixed on spray column body interior, described water film filtering layer external stability moisture film fixed frame, moisture film fixed outer frame edge tilts to be fixed in spray column body.
By desulfurizing agent is distributed on moisture film, increase the surface area of desulfurizing agent, and with the contact area of waste gas, make waste gas and desulfurizing agent can abundant haptoreaction, polylith water film filtering layer carries out filtration reaction to waste gas simultaneously, be equivalent to repeatedly repeat desulphurization reaction to one waste gas, desulfuration efficiency is high, and desulfurized effect is more obvious.
Preferably, described spray system is arranged in order by some water pipes and is formed by stacking, and some shower nozzles installed by each circular water pipe.
Desulfurizing agent in sedimentation basin can be come by uniform rapid dispersion through spray system, and carry out abundant haptoreaction with the waste gas in tower, desulfuration efficiency is high, and desulfurized effect is more obvious.
Preferably, described spray system is formed by stacking for being arranged in order by 3-5 water pipe, and water pipe is circular water pipe, and each layer water pipe from the bottom to top diameter once reduces, its maximum gauge is equal to or slightly less than the internal diameter of spray column body, each water pipe is provided with 30-40 shower nozzle.
Preferably, described air inlet pipe two is respectively inlet end and water intake end, and the height of described inlet end, higher than the liquid level in sedimentation basin, water intake end connects funnel, and the wide-mouth of funnel is provided with screen pack.
The effective depth of inlet end can prevent the liquid in sedimentation basin from flowing backwards; Water intake end connecting funnel can effectively make waste gas be distributed in desulfurizing agent, improves the speed of desulphurization reaction; Screen pack can prevent the bulky grain foreign matter in waste gas from entering in sedimentation basin, and the desulfurizer in blocking tower, affects carrying out in order of biochemical reaction in tower.
Preferably, the wide-mouth diameter of described funnel is equal to or slightly less than the internal diameter of spray column body.
Preferably, described screen pack is made up of stainless steel, and the order number on it is 300-400.
Preferably, between described gas outlet and spray system, be also provided with demist layer, demist layer is provided with scavenge pipe.
Preferably, described water film filtering layer is non-woven fabrics or gauze; Desulfurizing agent is full of in described sedimentation basin.
For achieving the above object, the present invention also provides a kind of method of moisture film desulfurization, and step is as follows:
Step one: waste gas is passed into the desulfurizing agent in sedimentation basin, waste gas is distributed to the desulfurizing agent in sedimentation basin, and carries out chemical reaction with desulfurizing agent, the partial vulcanization thing in removing waste gas;
Step 2: spray system is in water film filtering system spray process, desulfurizing agent can form the moisture film slowly flowed on every layer of water film filtering layer, the desulfurizing agent continued on rising and ground floor water film filtering layer through the waste gas of sedimentation basin process carries out chemical reaction, waste gas continues to rise and carries out chemical reaction with the desulfurizing agent on second layer water film filtering layer again, then third layer, the 4th layer or more layer, waste gas, after Multilevel method, is cleaned into clean air and is discharged in air;
Sediment residual after itself and waste gas reaction washes away and falls into sedimentation basin by the desulfurizing agent that step 3, water film filtering layer flow, and focuses on.
The beneficial effect of the invention:
The present invention crosses and is distributed on moisture film by desulfurizing agent, increase the surface area of desulfurizing agent, and with the contact area of waste gas, make waste gas and desulfurizing agent can abundant haptoreaction, polylith water film filtering layer carries out filtration reaction to waste gas simultaneously, be equivalent to repeatedly repeat desulphurization reaction to one waste gas, desulfuration efficiency is high, and desulfurized effect is more obvious.Desulfurizing agent in sedimentation basin can be come by uniform rapid dispersion through spray system, and carry out abundant haptoreaction with the waste gas in tower, desulfuration efficiency is high, and desulfurized effect is more obvious.The effective depth of inlet end can prevent the liquid in sedimentation basin from flowing backwards; Water intake end connecting funnel can effectively make waste gas be distributed in desulfurizing agent, improves the speed of desulphurization reaction; Screen pack can prevent the bulky grain foreign matter in waste gas from entering in sedimentation basin, and the desulfurizer in blocking tower, affects carrying out in order of biochemical reaction in tower.
Accompanying drawing explanation
Fig. 1 illustrates the structural representation of moisture film desulfuration spray tower of the present invention;
Fig. 2 illustrates the structural representation of moisture film desulfuration spray tower water film filtering system of the present invention;
Fig. 3 illustrates the structural representation of moisture film desulfuration spray tower air inlet pipe of the present invention;
Fig. 4 illustrates the structural representation of moisture film desulfuration spray tower spray system of the present invention.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Shown in 4, moisture film desulfuration spray tower of the present invention, comprise spray column body 1, the top, top of spray column body 1 is provided with gas outlet 2, below is sedimentation basin 3, desulfurizing agent is full of in sedimentation basin 3, sedimentation basin 3 inside extends outward one section of air inlet pipe 4, air inlet pipe 4 two is respectively inlet end 41 and water intake end 42, the height of inlet end 41 is higher than the liquid level in sedimentation basin 3, water intake end 42 connects funnel 43, the wide-mouth of funnel 43 is provided with screen pack 44, the wide-mouth diameter of funnel 43 is equal to or slightly less than the internal diameter of spray column body 1, screen pack 44 is made up of stainless steel, order number on it is 300-400, gas outlet 2 place drenching tower body 1 inside is also provided with spray system 5, spray system 5 is formed by stacking for being arranged in order by 3-5 water pipe 51, water pipe 51 is circular water pipe, each layer water pipe 51 from the bottom to top diameter once reduces, its maximum gauge is equal to or slightly less than the internal diameter of spray column body 1, each water pipe 51 is provided with 30-40 shower nozzle 52, the circulating pump 6 of spray column body 1 outside connects spray system 5 and sedimentation basin 3 by pipeline, water film filtering system 7 is provided with between spray system 5 and sedimentation basin 3, water film filtering system 7 is connected successively by some water film filtering layers 71, and it is inner to be fixed on spray column body 1, water film filtering layer 71 external stability moisture film fixed frame 72, water film filtering layer 71 is non-woven fabrics or gauze, and moisture film fixed frame 72 outer edge tilts to be fixed in spray column body 1, also be provided with demist layer 8 between gas outlet 2 and spray system 5, demist layer 8 be provided with scavenge pipe 9.
The method of moisture film desulfurization of the present invention, step is as follows:
Step one: waste gas is passed into the desulfurizing agent in sedimentation basin 3, waste gas is distributed to the desulfurizing agent in sedimentation basin 3, and carries out chemical reaction with desulfurizing agent, the partial vulcanization thing in removing waste gas;
Step 2: spray system is in water film filtering system spray process, desulfurizing agent can form the moisture film slowly flowed on every layer of water film filtering layer 71, the waste gas continuation rising processed through sedimentation basin 3 carries out chemical reaction with the desulfurizing agent on ground floor water film filtering layer 71, waste gas continues to rise and carries out chemical reaction with the desulfurizing agent on second layer water film filtering layer 71 again, then third layer, the 4th layer or more layer, waste gas, after Multilevel method, is cleaned into clean air and is discharged in air;
Sediment residual after itself and waste gas reaction washes away and falls into sedimentation basin 3 by the desulfurizing agent of flowing on step 3, water film filtering layer 71, and focuses on.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (9)
1. a moisture film desulfuration spray tower, comprise spray column body (1), the top, top of described spray column body (1) is provided with gas outlet (2), below is sedimentation basin (3), sedimentation basin (3) inside extends outward one section of air inlet pipe (4), gas outlet (2) place that described pouring tower body (1) is inner is also provided with spray system (5), the circulating pump (6) that described spray column body (1) is outside connects spray system (5) and sedimentation basin (3) by pipeline, it is characterized in that, water film filtering system (7) is provided with between described spray system (5) and sedimentation basin (3), described water film filtering system (7) is connected successively by some water film filtering layers (71), and it is inner to be fixed on spray column body (1), described water film filtering layer (71) external stability moisture film fixed frame (72), moisture film fixed frame (72) outer edge tilts to be fixed in spray column body (1).
2. moisture film desulfuration spray tower according to claim 1, it is characterized in that: described spray system (5) is arranged in order by some water pipes (51) and is formed by stacking, each circular water pipe (51) is upper installs some shower nozzles (52).
3. moisture film desulfuration spray tower according to claim 2, it is characterized in that: described spray system (5) is formed by stacking for being arranged in order by 3-5 water pipe (51), water pipe (51) is circular water pipe, each layer water pipe (51) from the bottom to top diameter once reduces, its maximum gauge is equal to or slightly less than the internal diameter of spray column body (1), each water pipe (51) is provided with 30-40 shower nozzle (52).
4. moisture film desulfuration spray tower according to claim 1, it is characterized in that: described air inlet pipe (4) two is respectively inlet end (41) and water intake end (42), the height of described inlet end (41) is higher than the liquid level in sedimentation basin (3), water intake end (42) connects funnel (43), the wide-mouth of funnel (43) is provided with screen pack (44).
5. moisture film desulfuration spray tower according to claim 4, is characterized in that: the wide-mouth diameter of described funnel (43) is equal to or slightly less than the internal diameter of spray column body (1).
6. moisture film desulfuration spray tower according to claim 5, is characterized in that: described screen pack (44) is made up of stainless steel, and the order number on it is 300-400.
7. moisture film desulfuration spray tower according to claim 1, it is characterized in that: between described gas outlet (2) and spray system (5), be also provided with demist layer (8), demist layer (8) is provided with scavenge pipe (9).
8. moisture film desulfuration spray tower according to claim 1, is characterized in that: described water film filtering layer (71) is non-woven fabrics or gauze; Described sedimentation basin is full of desulfurizing agent in (3).
9. a method for moisture film desulfurization, is characterized in that, step is as follows:
Step one: waste gas is passed into the desulfurizing agent in sedimentation basin (3), waste gas is distributed to the desulfurizing agent in sedimentation basin (3), and carries out chemical reaction with desulfurizing agent, the partial vulcanization thing in removing waste gas;
Step 2: spray system is in water film filtering system spray process, the moisture film that desulfurizing agent slowly can flow in the upper formation of every layer of water film filtering layer (71), the waste gas continuation rising processed through sedimentation basin (3) carries out chemical reaction with the desulfurizing agent on ground floor water film filtering layer (71), waste gas continues to rise and carries out chemical reaction with the desulfurizing agent on second layer water film filtering layer (71) again, then third layer, the 4th layer or more layer, waste gas, after Multilevel method, is cleaned into clean air and is discharged in air;
Sediment residual after itself and waste gas reaction washes away and falls into sedimentation basin (3) by the desulfurizing agent of the upper flowing of step 3, water film filtering layer (71), and focuses on.
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| CN201410715037.2A CN104437070A (en) | 2014-11-28 | 2014-11-28 | Water film desulfurization spray tower and water film desulfurization method |
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| CN201410715037.2A CN104437070A (en) | 2014-11-28 | 2014-11-28 | Water film desulfurization spray tower and water film desulfurization method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874246A (en) * | 2015-05-11 | 2015-09-02 | 江霜英 | Liquid membrane for preventing and treating local environment air pollution, liquid membrane device and air filtering device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203458970U (en) * | 2013-08-27 | 2014-03-05 | 国家粮食储备局郑州科学研究设计院 | Boiler tail gas treatment device with smoke gas filter column |
| CN204338011U (en) * | 2014-11-28 | 2015-05-20 | 广西南宁华国环境科技有限公司 | Moisture film desulfuration spray tower |
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- 2014-11-28 CN CN201410715037.2A patent/CN104437070A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203458970U (en) * | 2013-08-27 | 2014-03-05 | 国家粮食储备局郑州科学研究设计院 | Boiler tail gas treatment device with smoke gas filter column |
| CN204338011U (en) * | 2014-11-28 | 2015-05-20 | 广西南宁华国环境科技有限公司 | Moisture film desulfuration spray tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874246A (en) * | 2015-05-11 | 2015-09-02 | 江霜英 | Liquid membrane for preventing and treating local environment air pollution, liquid membrane device and air filtering device |
| CN104874246B (en) * | 2015-05-11 | 2016-04-27 | 江霜英 | For preventing and treating liquid film and liquid film device, the air filter of local environmental air pollution |
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Application publication date: 20150325 |