CN102423604A - Combined type flue gas desulfurization and denitration device - Google Patents

Combined type flue gas desulfurization and denitration device Download PDF

Info

Publication number
CN102423604A
CN102423604A CN2011102443890A CN201110244389A CN102423604A CN 102423604 A CN102423604 A CN 102423604A CN 2011102443890 A CN2011102443890 A CN 2011102443890A CN 201110244389 A CN201110244389 A CN 201110244389A CN 102423604 A CN102423604 A CN 102423604A
Authority
CN
China
Prior art keywords
active carbon
adsorption
desulfuring
conveyer
adsorption tower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011102443890A
Other languages
Chinese (zh)
Inventor
毛炳军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAIYUAN JIHUN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
Original Assignee
TAIYUAN JIHUN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TAIYUAN JIHUN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD filed Critical TAIYUAN JIHUN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
Priority to CN2011102443890A priority Critical patent/CN102423604A/en
Publication of CN102423604A publication Critical patent/CN102423604A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a combined type flue gas desulfurization and denitration device. The combined device comprises a booster fan 2, an ammonia conveying pipe 3, an adsorption tower 5, an automatic alarm probe 6, an active carbon inlet feeder 8, an active carbon outlet discharger 9, a saturated active carbon conveyor 10, a clean active carbon conveyor 11, a regeneration reactor 12, a post-desorption active carbon conveyor 15, a vibration screen 16, an active carbon supplementing hopper 17, an additional active carbon conveyor 18 and an active carbon storage tank 19; and the combined device is characterized by further comprising active carbon 22 in an adsorption area. The adsorption material in the combined type device is the active carbon 22 which has a wide adsorption range and can be reused. One or more complete and independent adsorption towers 5 can be arranged according to the amount of the flue gas, and each adsorption tower 5 can independently finish the desulfurization and denitration process. The flue gas after the desulfurization and denitration is finally gathered in a flue and discharged outside.

Description

The combination type flue gas desulfurization denitrification apparatus
Technical field
The present invention relates to a kind of combined vertical flue gas desulfurization and denitrification device, relate in particular to a kind of device of dry desulfurization denitration.
Background technology
At present, coal has occupied energy leading position.When consuming coal resources, produced a large amount of SO that impairs human body 2, Nox, and row SO 2, environmental pollutions such as the caused greenhouse effects of Nox, acid rain and depletion of the ozone layer have become everybody consistent problem deeply concerned, that have a strong impact on environment for human survival.The poisonous trace element 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.
And country is to the environmental protection requirement increasingly stringent, and mandatory requirement flue gas desulfurization and progressively advocate and remove nitrogen oxide.Present 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, my company develops a kind of combined type desulfuring and denitrifying apparatus.This device can be accomplished the desulphurization denitration process in a device simultaneously.And floor space is few, cheap, not water, operating cost is low, efficient is high and stable, can also the waste recovery utilization, change into serial byproducts such as sulfuric acid, sulphur, thiamines, can be with changing waste into resources.
Summary of the invention
The present invention provides a kind of combination high-efficiency flue gas desulfurization and denitrification device, 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.
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.
Can be in one covering device according to containing SO in the flue gas 2, Nox what, one and a plurality of complete, cell cube independently are set respectively, 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 combined type desulfuring and denitrifying apparatus 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.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.
Combined type absorption type dry flue gas desulphurization denitrification apparatus 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, and comprehensive utilization of waste materials can also output byproduct, certainly non-secondary pollution.
Description of drawings
Fig. 1 is the combined type desulfuring and denitrifying apparatus in the embodiment of the invention;
Fig. 2 is that the inner adsorbent of the combined type desulfuring and denitrifying apparatus in the embodiment of the invention is arranged sketch map (vertical view);
Fig. 3 is arranged in juxtaposition sketch map (vertical view) for two groups for the combined type desulfuring and denitrifying apparatus in the embodiment of the invention;
Description of reference numerals:
1. the defeated ammonia pipe .4. ammonia nozzle .5. automatic alarm probe .7. of the adsorption tower .6. exhanst gas outlet .8. up to standard active carbon inlet of ash-laden gas .2. booster fan .3. feeder .9. active carbon exports the clean active carbon conveyer of discharger .10. saturated activity charcoal conveyer .11. .12. regeneration reactor .13.SO 2, NO XAnd active carbon conveyer .16. vibratory sieve .17. active carbon replenishes the newly-increased active carbon conveyer .19. active carbon holding vessel .20. ash-laden gas of hopper .18. and advances adsorption tower inlet .21. flue gas up to standard and go out adsorption tower outlet .22. active carbon behind the synthetic .14. superheated steam .15. desorption.
The specific embodiment
Carry out detailed explanation below in conjunction with Fig. 1-3 pair of combined type dry flue gas desulphurization denitrification apparatus of the present invention.
Fig. 1 is the combined type desulfuring and denitrifying apparatus process flow diagram in the embodiment of the invention.Wherein, this device can be provided with one or more adsorption towers 5 respectively according to the size of dustiness in the flue gas.Be provided with three adsorption towers 5 among the figure; Detailed process is the absorption material to be put into active carbon replenish hopper 17 through the newly-increased active carbon conveyer 18 of active carbon outlet discharger 9 inflows; Get into active carbon holding vessel 19 through active carbon inlet feeder 7; Through active carbon outlet discharger 9, drop to clean active carbon conveyer 11 again, finally arrive adsorption tower 5.
The process of absorption is a counter-current process.In this process, ash-laden gas 1 flows under the effect of booster fan 2 from bottom to top, and active carbon flows under the effect of gravity from top to down.Whole process is divided two parts; First is a sweetening process: sulfur dioxide harmful in the flue gas fully is adsorbed on the absorption material, when automatic alarm probe 6 is reported to the police, explains that the absorption material has adsorbed saturated; The active carbon inlet feeder 8 and the active carbon outlet discharger 9 on the drainage line that are arranged on this moment on the blanking pipeline are opened simultaneously; Saturated absorption material is discharged by outlet under the effect of gravity, drops on the saturated activity charcoal conveyer 10, and the material of the cleaning of equivalent absorption simultaneously gets into; Adsorption process is restarted, the cancellation of reporting to the police.
Saturated absorption material is transported to regeneration reactor 12 under the effect of saturated activity charcoal conveyer 10.Regeneration reactor 12 has the function that the saturated activity charcoal is desorbed.Feed superheated steam 14 at its end opening, then can be rich in SO suitable for reading overflowing 2, NO XAnd the gas of synthetic 13, through further processing, but the very high byproduct of output added value.Meanwhile, the saturated activity charcoal is desorbed, and becomes clean active carbon, can participate in the absorption activity again again.Through active carbon outlet discharger 9, fall behind the desorption on the active carbon conveyer 15, through the screening of vibratory sieve 16, qualified active carbon gets into clean active carbon conveyer 11, is transported to adsorption tower 5.
Second is denitrification process: add defeated ammonia pipe 3 on outside flue, the ammonia nozzle is set in the flue.Nitrogen oxide harmful in the flue gas fully is adsorbed on the absorption material, under the effect of ammonia, is catalyst with the active carbon, with removal of nitrogen oxide, when automatic alarm probe 5 is reported to the police, explain reach adsorb saturated.All the other processes are identical with desulfurization.
The absorption material can repeat repeatedly to utilize.Promptly reach national requirements for environmental protection, also can turn waste into wealth, create effect. promptly reach the national requirements for environmental protection benefit, reduce operating cost.
In adsorption 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 behind the desulphurization denitration, flue gas up to standard converges to a flue at last and effluxes.
Fig. 2 is that the inner adsorbent of the combined type desulfuring and denitrifying apparatus in the embodiment of the invention is arranged sketch map (vertical view).This structure is a steel design.Manufacturing materials is a steel eyelet sieve plate.Among the figure, thickness A B=250mm~400mm.Load absorption material---active carbon in it.Generally arrange 3~5 layers, ash-laden gas 1 is got into through absorption material 22 by eyelet and carries out first order adsorption process, and not adsorbing the harmful substance of falling will be adsorbed in through processes such as the second level, the third level one by one.Steel eyelet sieve plate in this structure is special special use.
Fig. 3 is arranged in juxtaposition sketch map (vertical view) for the combined type desulfuring and denitrifying apparatus in the embodiment of the invention.This structure is applicable to the flue gas desulfurization and denitrification in the large thermal power plant.Because exhaust gas volumn is very big, contains SO comparatively speaking 2, NO XAmount just many, therefore must adopt two groups or more this combined type desulfuring and denitrifying apparatus to carry out parallelly connected arrangement form, can deal with problems.Be flue collector in the centre, this device is arranged in both sides, every side can be provided with two or more adsorption towers 5 as required, draws corresponding branch flue from flue collector, uniformly ash-laden gas 1 is introduced in each adsorption tower 5.Adsorption process in each adsorption tower 5 sees that Fig. 1 explains.Through behind the desulphurization denitration, flue gas up to standard converges to a flue at last and effluxes.

Claims (12)

1. combined type desulfuring and denitrifying apparatus; Comprise booster fan 2, defeated ammonia pipe 3, adsorption tower 5, active carbon conveyer 15, vibratory sieve 16, active carbon replenish hopper 17, newly-increased active carbon conveyer 18, active carbon holding vessel 19 behind alarm probe 6, active carbon inlet feeder 8, active carbon outlet discharger 9, saturated activity charcoal conveyer 10, clean active carbon conveyer 11, regeneration reactor 12, the desorption automatically; It is characterized in that, also comprise the active carbon 22 in the adsorption zone.
2. desulfuring and denitrifying apparatus according to claim 1 is characterized in that, comprises that also the section plan view of device adsorption tower 5 in this is square or rectangle.
3. desulfuring and denitrifying apparatus according to claim 1 is characterized in that, also comprises being located at ducted ammonia nozzle 4.
4. desulfuring and denitrifying apparatus according to claim 1 is characterized in that, the import and export of adsorption tower 5, active carbon holding vessel 19, regeneration reactor 12 are provided with active carbon inlet feeder 8, active carbon outlet discharger 9.
5. desulfuring and denitrifying apparatus according to claim 1 and 2 is characterized in that, on the inlet duct of ash-laden gas 1, is provided with booster fan 2.
6. desulfuring and denitrifying apparatus according to claim 1 is characterized in that, also comprises being located at the terminal vibratory sieve 16 of active carbon conveyer behind the desorption 15.
7. desulfuring and denitrifying apparatus according to claim 1 is characterized in that, the quantity of adsorption tower 5 in the said device can be provided with respectively more than one and one according to the size of exhaust gas volumn.Each adsorption tower 5 all can be accomplished the desulphurization denitration process separately.Each adsorption tower 5 is through the flue gas behind the desulphurization denitration, and is last, converges to a flue and effluxes.
8. 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 the confession adsorbent---active carbon 22 so that the harmful substance in the adsorbents adsorb gas, when adsorbent is full close after; Being located at the automatic alarm probe 6 of adsorption zone can report to the police automatically, and active carbon outlet discharger 9 is opened, and the full poisonous adsorbent that closes flows out tower body under the gravity effect; Active carbon inlet feeder 8 is opened simultaneously, and clean active carbon 22 falls, automatically original position of the full poisonous adsorbent that closes of replacement; All clear, active carbon outlet discharger 9, active carbon inlet feeder 8 close synchronouslies, new adsorption process begins; 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 regeneration reactors 12 through saturated activity charcoal conveyer 10 and carry out Regeneration Treatment, can pass through clean active carbon conveyer 11 through the adsorbent of Regeneration Treatment, is transported to adsorption tower 5, reuses.
9. desulfurization denitration method according to claim 8 is characterized in that, full regenerable sorbent of closing with sulfur dioxide wherein, changes into sulfurous acid, sulfuric acid and thiamines through the byproduct device in regeneration, recycles regeneration sulphur resource.
10. steel design, manufacturing materials is a steel eyelet sieve plate.Interior dress active carbon 22 is characterized in that AB=250mm~400mm.
11. steel design according to claim 10 is characterized in that, is used to carry adsorbent, so that adsorbents adsorb gas.
12. by a plurality of claims 2,8,10,11 described steel design, interior dress active carbon 22 is characterized in that, is the adsorption module that 3~5 layers of arrangement form.
CN2011102443890A 2011-08-25 2011-08-25 Combined type flue gas desulfurization and denitration device Pending CN102423604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011102443890A CN102423604A (en) 2011-08-25 2011-08-25 Combined type flue gas desulfurization and denitration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011102443890A CN102423604A (en) 2011-08-25 2011-08-25 Combined type flue gas desulfurization and denitration device

Publications (1)

Publication Number Publication Date
CN102423604A true CN102423604A (en) 2012-04-25

Family

ID=45957685

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011102443890A Pending CN102423604A (en) 2011-08-25 2011-08-25 Combined type flue gas desulfurization and denitration device

Country Status (1)

Country Link
CN (1) CN102423604A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102674488A (en) * 2012-05-24 2012-09-19 首钢总公司 Method and device for treating saline wastewater
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
CN105716436A (en) * 2016-03-24 2016-06-29 南通万达锅炉有限公司 Mine heat furnace kiln waste heat recycling system
CN109224803A (en) * 2018-09-29 2019-01-18 中国科学院过程工程研究所 A kind of flue gas purifying technique and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001170436A (en) * 1999-12-21 2001-06-26 Shinko Pantec Co Ltd Gas treating device
CN101322896A (en) * 2008-04-10 2008-12-17 毛炳军 Vertical type high-efficient flue gas desulfurizing and denitrating apparatus
CN102145245A (en) * 2010-02-05 2011-08-10 北京国电清新环保技术股份有限公司 Large active coke convection/adsorption gas purifying system and purifying method
CN202315629U (en) * 2011-08-25 2012-07-11 太原晋魂环保工程有限公司 Combined type flue gas desulfurization and denitration device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001170436A (en) * 1999-12-21 2001-06-26 Shinko Pantec Co Ltd Gas treating device
CN101322896A (en) * 2008-04-10 2008-12-17 毛炳军 Vertical type high-efficient flue gas desulfurizing and denitrating apparatus
CN102145245A (en) * 2010-02-05 2011-08-10 北京国电清新环保技术股份有限公司 Large active coke convection/adsorption gas purifying system and purifying method
CN202315629U (en) * 2011-08-25 2012-07-11 太原晋魂环保工程有限公司 Combined type flue gas desulfurization and denitration device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102674488A (en) * 2012-05-24 2012-09-19 首钢总公司 Method and device for treating saline wastewater
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
CN105716436A (en) * 2016-03-24 2016-06-29 南通万达锅炉有限公司 Mine heat furnace kiln waste heat recycling system
CN109224803A (en) * 2018-09-29 2019-01-18 中国科学院过程工程研究所 A kind of flue gas purifying technique and device

Similar Documents

Publication Publication Date Title
CN101274193B (en) System for purifying flue gas and recovering sulfur and technique
US7494632B1 (en) Mercury sorbent delivery system for flue gas
CN202289840U (en) Activated coke flue gas desulfurization and denitrification system
CN102430318A (en) System for desulfurizing and denitrating active coke flue gas, and process method
KR20090038848A (en) Activated carbon honeycomb catalyst bed for removing mercury from combustion flue gas
US7875102B2 (en) Method for managing the use of flow-through monolithic sorbents for the sorption of a trace contaminant from a fluid stream
CN102225303A (en) Combined apparatus and method for dedusting, desulphurization, denitration, demercuration and smoke extraction of coal-fired flue gas
CN201988299U (en) Waste gas purifying device
CN102423604A (en) Combined type flue gas desulfurization and denitration device
CN202315629U (en) Combined type flue gas desulfurization and denitration device
CN102343195A (en) Vertical dry flue gas desulphurization and denitration integrated device
CN204543944U (en) A kind ofly combine the device removed with heavy metal for boiler smoke particle
JP2010528850A (en) Device and method for reducing CO2 emissions from furnace exhaust
US11369922B2 (en) Catalyst mixture for the treatment of waste gas
CN102807902B (en) Secondary purification method of coke oven gas
CN101322896A (en) Vertical type high-efficient flue gas desulfurizing and denitrating apparatus
CN202620997U (en) Integrated device for purifying flue gas generated during refuse burning
CN211753845U (en) Improved generation exhaust gas desulfurization denitrification facility
CN203694875U (en) Radial cross-flow moving-bed reactor for removal of hydrogen sulfide by temperature swing adsorption
CN203971636U (en) Inclined grille dust-removal and desulfurizing integrated device
CN201244429Y (en) Vertical type high-efficient flue gas desulfurizing and denitrating apparatus
CN209771798U (en) Urban sludge incineration flue gas purification system
Torretta et al. Removal of odorous sulphur compounds from industrial gases by biotrickling filters
CN202555138U (en) Efficient dry process desulfurization and denitrification flue gas purifying device
US10478776B2 (en) Process for the removal of heavy metals from fluids

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120425