CN102343195A - Vertical dry flue gas desulphurization and denitration integrated device - Google Patents

Vertical dry flue gas desulphurization and denitration integrated device Download PDF

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Publication number
CN102343195A
CN102343195A CN201110244398XA CN201110244398A CN102343195A CN 102343195 A CN102343195 A CN 102343195A CN 201110244398X A CN201110244398X A CN 201110244398XA CN 201110244398 A CN201110244398 A CN 201110244398A CN 102343195 A CN102343195 A CN 102343195A
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China
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integrated device
adsorbent
desulphurization denitration
unit
flue gas
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CN201110244398XA
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毛炳军
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TAIYUAN JIHUN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
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TAIYUAN JIHUN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
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Abstract

The invention provides a vertical dry flue gas desulphurization and denitration integrated device. The integrated device comprises hexahedron-shaped sieve plate funnels 17, an integral tower 3, a grading sieve 2, adsorption materials 12, automatic alarm probes 5, ammonia nozzles 6, a storage bin 8, a conveying system 9, material control valves 10, a regenerating unit 11 and a by-product device 13, wherein, active carbon is taken as the adsorption materials 12 in the vertical integrated device with wide adsorption range, and the active carbon can be recycled. In the invention, the integral tower can be divided into one or more than one of complete and independent units according to the quantity of flue gas, and each unit can separately complete the desulphurization and denitration process; and finally the desulphurized and denitrated flue gas is gathered into a flue to be discharged.

Description

Vertical dry-process flue gas desulfurization and denitrification integrated apparatus
Technical field
The present invention relates to a kind of vertical flue gas desulfurization and denitrification integrated apparatus, relate in particular to the device that a kind of dry desulfurization denitrification integral is accomplished.
Background technology
At present, coal is important fuel and industrial chemicals, even occupied age of energy leading position at oil, the effect of coal still can not be ignored.Coal has been played the part of outstanding role in China's power industry and chemical industry.According to statistics, China generating in 1994 0.91 * 1012kWh, wherein thermal power generation accounts for 80%, the about 400Mt of coal; 2000 annual electricity generating capacities reach 1.5 * 1012kWh, and coal consumption will be increased to more than 70% from 40% of producing coal amount.These explain that all the important function that coal is risen is that other fuel are irreplaceable in power industry.
A large amount of emission dust, SO 2, environmental pollutions such as the caused greenhouse effects of Nox, acid rain and depletion of the ozone layer have become everybody consistent serious problems deeply concerned, that influence environment for human survival.The toxic trace elements of coal-burning boiler generation is in recent years also more and more paid close attention to by people the harm of environment.The technology of various control atmosphere pollution has become the most urgent mission of various countries efforts at environmental protection person.
Because the extensive use of coal has caused and has existed SOx and NOx gas in the air in a large number.SO 290% derives from coal-fired flue-gas in the discharge capacity; 60% derives from coal-fired flue-gas in the NOx discharge capacity.(SOx, general 98%~99% is SO to oxysulfide 2, all the other are SO 3) and nitrogen oxide (NOx general 90%~99.5% is NO, and all the other are NO 2) discharging be the main cause that forms acid rain, they cause great harm to the human health and the natural ecological balance.
Along with the increasingly stringent of country to environmental requirement.From before dedusting discharge index 100~300mg/m3 till now≤50mg/m3, and mandatory requirement flue gas desulfurization and progressively advocate the denitration denitrogenation.After present domestic dedusting industry has adopted bag-type dust, can satisfy the discharge standard of national requirements for environmental protection :≤50mg/m3 fully.And domestic sulfur removal technology all adopts wet desulphurization (being the principle of acid-base neutralization) more than 95%.Though this technology can reach discharge standard, the content of sulphur is unsettled in the high-temperature flue gas, and the concentration of medium of water is also very unstable, so be difficult to guarantee operation steady in a long-term.Sulphur produces high-temperature sub sulfuric acid through producing after the heat after sulfur dioxide is met water; This is the most unmanageable deep-etching material in chemical industry; Buck itself also is a corrosive medium, does not just corrode after closing in having only, and does not close in stable if do not keep; No matter add and wash away, be acid or alkalescence contains non-ferrous metal to most metals absolute powerful destructive power is all arranged.Even if can guarantee to close operation in stable, its operating cost is also very high, and middle Heshui also needs after sewage disposal, could discharge.Adding China is one of country of serious water shortage, and this technology also is a kind of serious waste to water resource.Importantly this technology desulfurization, denitration at all can't be compatible.In this case, a kind of dry desulfurization denitrification integrated device arises at the historic moment.This device can be accomplished desulphurization denitration in a device simultaneously; Floor space is few, cheap, not water, operating cost is low, efficient is high and stable; And can also the waste recovery utilization; Change into serial byproducts such as sulfuric acid, sulphur, thiamines, but be a kind of desulfuring and denitrifying apparatus of resource.
Summary of the invention
The present invention provides a kind of vertical absorption type high-efficiency flue gas desulfurization denitration integrated apparatus, but be a kind of pure dry method, filler can repeat environmental protection equipment resource that regeneration cycle uses, new and effective, that can desulphurization denitration be accomplished in a covering device.
The sectional drawing of overlooking of this contrive equipment is circular, square and rectangle.
What desulfuring and denitrifying apparatus of the present invention adopted is the operation principle of physical absorption, and the harmful substance that will contain in the pernicious gas of sulfur dioxide and nitrogen oxide is adsorbed onto on the sorbing material.
One and more than one complete, cell cube independently can be set respectively according to the size of exhaust gas volumn in one covering device, and each unit all can be accomplished the desulphurization denitration process separately.
Each unit is equipped with monitoring probe, when sorbing material is full close after, monitoring probe can be reported to the police automatically.The clean sorbing material in back of reporting to the police will be changed the full poisonous sorbing material that closes automatically.The full poisonous sorbing material that closes will get into the regeneration converter automatically and carry out Regeneration Treatment; Sorbing material through Regeneration Treatment is the same with new clean sorbing material performance function; Can reuse, the full efficient renewable sorbing material that closes can become Sulphur Dioxide wherein sulfuric acid, sulphur and thiamines in regeneration; Turn waste into wealth, become a kind of chemical raw material.The purification of harmful toxic smoke gas process desulphurization denitration integrated device just becomes pure air and enters atmosphere.This device go up to adopt the PLC automatic control system, and is simple and compact for structure, simple to operately guarantees stable and reliable operation, and can be connected with the national environmental protection on-line monitoring system is supporting, realizes remote on-line monitoring.
Above-mentioned sorbing material comprises activated carbon.Because activated carbon itself is that a kind of porous carbonaceous material has highly developed pore structure and huge specific area, therefore has very strong adsorptivity.The hole of activated carbon is divided into micropore, mesopore and macropore, and its aperture is respectively greater than 2nm, and 20-200nm is greater than 200nm.Contain multielement on the activated carbon surface and contain the oxygen functional group, can also flood chemical substance, process impregnated activated carbon.Therefore it is good adsorbent, also is catalyst, catalyst carrier.Through refining high-efficiency desulfurization, the denitration sorbing material that forms of special technology.This product hole is flourishing, and specific surface is bigger, especially with the big and unique advantage of micropore volume.Its intensity height, friction resistant, shock-resistant, easy regeneration.Adsorption rate is exceedingly fast, and the capacity height is to various organic solutes, free oxygen, and airborne various pernicious gases have extremely strong adsorption capacity, and has fabulous gas separation and purification function.
Desulfurization of the present invention, denitrification apparatus be adaptable across high-efficiency desulfurization, the denitration of heat power plant boiler flue gas, can remove also simultaneously that mercury takes off, bromine harmful substance etc.Especially to the heavy metal in the flue gas of refuse burning; Especially Hg 、 bioxin (PCDDS), furans pernicious gases such as (PCDFs) have good catharsis, can also carry out effective isolation of purified to pernicious gases such as cyanide, arsenide, ammonia, carbon monoxide, benzene, chlorine, formaldehyde.
Vertical absorption type dry flue gas desulphurization denitration integrated device of the present invention has following advantage: floor space is little, small investment, operating cost is low, Applicable temperature is wide, resistance is little, not consume water resources, energy savings.The sorbing material absorption efficiency is high, and the repeated use of regenerating.Ashes to deduster does not eliminate also can thoroughly clean removal.Whole system has adsorption tower, blower fan, conveyer, regenerator, valve etc., and the pipeline configuration is less, power is little, energy consumption is little, maintenance capacity is little, do not have corrosion obstruction, fouling, phenomenons such as fan belt water, and material employing steel, and less investment, system's operation is simple and reliable.The adsorption efficiency height is applied widely, and sorbing material aboundresources and price are low, comprehensive utilization of waste materials, the non-secondary pollution of can also the output byproduct determining.
Description of drawings
Fig. 1 is the desulphurization denitration one tower apparatus that the sieve plate funnel is housed in the embodiment of the invention;
Fig. 2 is the positive hexahedron shape sieve plate funnel shaped sketch map in the embodiment of the invention;
Fig. 3 arranges sketch map (vertical view) for sieve plate funnel in the tower in the embodiment of the invention is plum blossom;
Description of reference numerals:
1. the saturated material of the automatic alarm probe .6. ammonia of pedestal .2. separating sieve .3. one tower .4. ash-laden gas .5 spout .7. flue outlet .8. feed bin .9. induction system .10. Material control valve .11. regenerating unit .12. absorption material .13. byproduct device .14. exports the positive hexahedron shape of .15. waste outlet .16. clean material import .17. sieve plate funnel.
The specific embodiment
Carry out detailed explanation below in conjunction with Fig. 1-3 pair of vertical dry-process flue gas desulfurization and denitrification integrated device of the present invention.
Fig. 1 is the desulphurization denitration one tower apparatus process flow diagram that the sieve plate funnel is housed in the embodiment of the invention.Wherein, this device is absorption material 12 to be put into feed bin 8 flow into the one tower 3 that positive hexahedron shape sieve plate funnel 17, downside advance ash-laden gas 4, spray ammonia mouth 6, flue outlet 7 through clean material imports 16 and fall to containing the harmful smoke 4 generation adverse currents of sulfur dioxide, nitrogen oxide with up high temperature.
In counter-current process, there are two processes to carry out simultaneously, first is a sweetening process: sulfur dioxide harmful in the flue gas fully is adsorbed on the absorption material 12; When automatic alarm probe 5 was reported to the police, it was saturated to explain that the absorption material has adsorbed, and be arranged on the Material control valve 10 that reaches on the drainage line on the blanking pipeline and open simultaneously this moment; Saturated absorption material is discharged by saturated material outlet 14 under the effect of gravity; The cleaning absorption material of the equivalent in the feed bin 8 gets into, and adsorption process begins, the cancellation of reporting to the police.When discharging saturated absorption material outward; Between base cone portion and drainage line, installed separating sieve 2 additional; Be beneficial to adsorb material 12 fricative fine particle in dropping process and sieve out, emit, utilize again or burning by waste outlet 15; Full discharge from material outlet 14 with the absorption material after, get into regenerating unit 11 and carry out Regeneration Treatment.Absorption material after the processing is the same with new absorption material effect, can be transported to feed bin 8 again, flows into 3 recyclings of one tower through pipeline.Regenerating unit 11 directly enters byproduct device 13 with the sulfurous acid liquid of acidity, useless G&W in regeneration, produce dilute sulfuric acid or sulphur, thiamines.
Second is denitrification process: nitrogen oxide harmful in the flue gas fully is adsorbed on the absorption material 12, under the effect of ammonia, is catalyst with the active carbon; With removal of nitrogen oxide, when automatic alarm probe 5 was reported to the police, declarative procedure was accomplished; Be arranged on the Material control valve 10 that reaches on the drainage line on the blanking pipeline and open simultaneously this moment, and saturated absorption material is discharged by saturated material outlet 14 under the effect of gravity, the cleaning absorption material entering in the feed bin 8; Adsorption process begins, the cancellation of reporting to the police.When discharging saturated absorption material outward, between base cone portion and drainage line, installed separating sieve 2 additional, be beneficial to absorption material 12 fricative fine particle in dropping process is sieved out, emit by waste outlet 15.
This device can reach national requirements for environmental protection, can turn waste into wealth again, creates economic benefit.Reduce operating cost simultaneously, play the effect of achieving many things at one stroke.
In one tower 3, can be divided into one and more than one complete, cell cube independently according to the size of exhaust gas volumn, each unit all can be accomplished the desulphurization denitration process separately.Through the flue gas of desulphurization denitration, last, converge to a flue, get into chimney.
Fig. 2 is the regular hexahedron shape sieve plate funnel shaped sketch map in the embodiment of the invention.This structure is a steel regular hexahedron shape funnel.Manufacturing materials is a steel eyelet sieve plate.Among the figure ∠ DEF=140 °~160 °.It act as: dress absorption material in the funnel, ash-laden gas 4 are got into through absorption material 12 by eyelet and carry out adsorption process, and this structure is special special use.
Fig. 3 arranges sketch map (vertical view) for regular hexahedron shape sieve plate funnel in the one tower in the embodiment of the invention is plum blossom.This structure is the structure vertical view that steel one tower 3 internal steel sieve plate funnels 17 are quincunx distribution.Such structure helps the even distribution of flue gas, increases adsorption area effectively, so that better handle absorption ash-laden gas 4.

Claims (11)

1. a vertical desulphurization denitration integrated device comprises that adsorbent with feed bin 8, the import 16 of clean material, saturated material outlet 14, induction system 9, regenerating unit 11, is characterized in that also comprise an adsorption zone, this adsorption zone has positive hexahedron shape sieve plate funnel 17.
2. desulphurization denitration integrated device according to claim 1 is characterized in that, comprises that also the section plan view of this integrated device is circular, square and rectangle.
3. desulphurization denitration integrated device according to claim 1 is characterized in that, also comprises the ammonia spout 6 of being located at adsorption zone.
4. desulphurization denitration integrated device according to claim 1 is characterized in that, feed bin 8, regenerating unit 11, byproduct device 13 are that 3 in one tower is shared.
5. desulphurization denitration integrated device according to claim 1 and 2 is characterized in that, expects to be provided with Material control valve 10 on the pipeline between the import 16 with feed bin 8 and cleaning at adsorbent, near saturated material outlet 14, also is provided with Material control valve 10.
6. desulphurization denitration integrated device according to claim 1 is characterized in that, said one tower 3 internal structures can be provided with one and more than one complete, cell cube independently according to the size of exhaust gas volumn respectively.Each unit all can be accomplished the desulphurization denitration process separately.Each unit is through the flue gas behind the desulphurization denitration, and is last, converges to a flue and effluxes.Each unit is equipped with the separating sieve of being located between saturated material outlet 14 and each adsorption zone unit bottom 2.Each unit is equipped with import 16 of clean material and induction system 9.
7. a while desulfurization denitration method is characterized in that, will contain pernicious gases such as sulfur dioxide and nitrogen oxide and pass through adsorption zone; This adsorption zone has and supplies the general positive hexahedron shape sieve plate funnel 17 of adsorbent stream so that the harmful substance in the adsorbents adsorb gas, when adsorbent is full close after; Being located at the monitoring probe of adsorption zone can report to the police automatically, and Material control valve 10 is opened simultaneously, and the full poisonous adsorbent that closes flows out tower body under the gravity effect; Clean sorbing material falls, and replaces original position of the full poisonous adsorbent that closes automatically, all clear; Material control valve 10 cuts out, and new adsorption process begins, and whole process is gone round and begun again; Continual generation, thus play the process of continuous desulfurization denitration.And the full poisonous adsorbent that closes will get into the regeneration converter automatically and carries out Regeneration Treatment, can reuse through the adsorbent of Regeneration Treatment.
8. desulfurization and denitrification integral method according to claim 5 is characterized in that, full regenerable sorbent of closing is in regeneration; With sulfur dioxide wherein; Change into sulfurous acid, sulfuric acid and thiamines through byproduct device 13, recycle, regeneration sulphur resource.
9. a positive hexahedron shape sieve plate funnel 17 is characterized in that ∠ DEF=130 °~140 °.
10. positive hexahedron shape sieve plate funnel 17 according to claim 8 is characterized in that this funnel is used to carry adsorbent, so that adsorbents adsorb gas.
11. be the quincunx absorbing unit that forms arranged evenly by a plurality of claims 9,10 described positive hexahedron shape sieve plate funnels 17.
CN201110244398XA 2011-08-25 2011-08-25 Vertical dry flue gas desulphurization and denitration integrated device Pending CN102343195A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794080A (en) * 2012-08-30 2012-11-28 北京国电清新环保技术股份有限公司 Method and device for comprehensively treating pollutants jointly aiming at waste heat recovery of flue gas in coke oven
CN102824809A (en) * 2012-09-21 2012-12-19 中冶长天国际工程有限责任公司 Adsorption tower
CN104857854A (en) * 2015-05-18 2015-08-26 杨祝红 Reverse-flow type flue gas purifying device and purifying units thereof
CN109482053A (en) * 2019-01-07 2019-03-19 中冶东方工程技术有限公司 Flue-gas purification equipment
CN114762788A (en) * 2022-04-29 2022-07-19 上海应用技术大学 Device for collecting volatile and semi-volatile substances of aromatic plants in situ
CN115178051A (en) * 2022-06-17 2022-10-14 北京铝能清新环境技术有限公司 Dry-method fixed bed adsorption device for desulfurization and denitrification

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH105522A (en) * 1996-06-26 1998-01-13 Kanebo Ltd Nitrogen gas generating device by pressure swing adsorption method
CN2604223Y (en) * 2002-05-15 2004-02-25 楚建堂 Active carbon fiber waste gas absorption recovery device
CN101322896A (en) * 2008-04-10 2008-12-17 毛炳军 Vertical type high-efficient flue gas desulfurizing and denitrating apparatus
CN201244429Y (en) * 2008-04-10 2009-05-27 毛炳军 Vertical type high-efficient flue gas desulfurizing and denitrating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH105522A (en) * 1996-06-26 1998-01-13 Kanebo Ltd Nitrogen gas generating device by pressure swing adsorption method
CN2604223Y (en) * 2002-05-15 2004-02-25 楚建堂 Active carbon fiber waste gas absorption recovery device
CN101322896A (en) * 2008-04-10 2008-12-17 毛炳军 Vertical type high-efficient flue gas desulfurizing and denitrating apparatus
CN201244429Y (en) * 2008-04-10 2009-05-27 毛炳军 Vertical type high-efficient flue gas desulfurizing and denitrating apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794080A (en) * 2012-08-30 2012-11-28 北京国电清新环保技术股份有限公司 Method and device for comprehensively treating pollutants jointly aiming at waste heat recovery of flue gas in coke oven
CN102794080B (en) * 2012-08-30 2016-08-03 北京清新环境技术股份有限公司 A kind of waste heat of coke-oven flue gas reclaims associating pollutant comprehensive processing method and device
CN102824809A (en) * 2012-09-21 2012-12-19 中冶长天国际工程有限责任公司 Adsorption tower
CN102824809B (en) * 2012-09-21 2015-05-13 中冶长天国际工程有限责任公司 Adsorption tower
CN104857854A (en) * 2015-05-18 2015-08-26 杨祝红 Reverse-flow type flue gas purifying device and purifying units thereof
CN109482053A (en) * 2019-01-07 2019-03-19 中冶东方工程技术有限公司 Flue-gas purification equipment
CN114762788A (en) * 2022-04-29 2022-07-19 上海应用技术大学 Device for collecting volatile and semi-volatile substances of aromatic plants in situ
CN115178051A (en) * 2022-06-17 2022-10-14 北京铝能清新环境技术有限公司 Dry-method fixed bed adsorption device for desulfurization and denitrification

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Application publication date: 20120208