CN109433006A - A kind of flue gas treating process process and its equipment configurations - Google Patents
A kind of flue gas treating process process and its equipment configurations Download PDFInfo
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- CN109433006A CN109433006A CN201910001333.9A CN201910001333A CN109433006A CN 109433006 A CN109433006 A CN 109433006A CN 201910001333 A CN201910001333 A CN 201910001333A CN 109433006 A CN109433006 A CN 109433006A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 64
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000428 dust Substances 0.000 claims abstract description 42
- 239000007921 spray Substances 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000005273 aeration Methods 0.000 claims abstract description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 30
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 15
- 230000003647 oxidation Effects 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 claims description 15
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 7
- 239000002803 fossil fuel Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 238000004056 waste incineration Methods 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 230000001699 photocatalysis Effects 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 12
- 239000012528 membrane Substances 0.000 abstract description 11
- 238000006477 desulfuration reaction Methods 0.000 abstract description 3
- 230000023556 desulfurization Effects 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 150000002013 dioxins Chemical class 0.000 abstract 1
- 239000012510 hollow fiber Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000003517 fume Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
一种烟气处理工艺流程及其装备配置的系统方案，以中空纤维膜高粉尘处理技术为核心，实现对烟气粉尘精确分离，达到微克级水平，从而为传统湿法脱硫脱硝、紫外线、催化剂、曝气、活性炭等等技术的更高效应用开辟了道路，组成了新的工艺流程和装备配置的系统方案。工艺顺序是：调整烟气温度，将烟气中的粉尘彻底分离，用曝气、紫外线、催化剂、填料喷淋塔湿法脱硫、脱硝，用活性炭和催化剂对二噁英等污染物吸附清除，尾气通过烟囱排放。A system scheme of flue gas treatment process and equipment configuration, taking hollow fiber membrane high dust treatment technology as the core, realizing accurate separation of flue gas dust, reaching micro-gram level, thereby being traditional wet desulfurization, denitrification, ultraviolet light, catalyst The more efficient application of aeration, activated carbon and other technologies has opened the way to a new system of process and equipment configuration. The process sequence is: adjusting the temperature of the flue gas, completely separating the dust in the flue gas, using the aeration, ultraviolet, catalyst, and spray towers for wet desulfurization and denitrification, and using activated carbon and a catalyst to adsorb and remove pollutants such as dioxins. The exhaust gas is discharged through the chimney.
Description
Fields
The invention belongs to fume treatment technical field, especially a kind of flue gas treating process process and its equipment configurations.
Background technique
Contain a large amount of dust, nitrogen oxides, oxysulfide and mercury, two in the flue gas that fossil fuel and incineration firing generate
The hypertoxic polluter such as English is disliked, society has paid great efforts to deal carefully with these flue gases, but still there are many technical problems
Have to be solved.
For dust, what is generallyd use at present is electrostatic precipitation and bag-type dust, and precision highest can achieve 1mg/m3, general
All over level in 30-50-300mg/m3.
For nitrogen oxides, the most frequently used SNCR method, current general level is between 50-150-400mg/m3, (water
The existing discharge standard of mud factory is 400 mg/m3) it is still a severe problem.
For sulfur dioxide, there are many mode of processing, the most commonly used is SCR, processing result 3-50-100mg/m3 it
Between, comparatively it is relatively easy to.
For dioxin, be widely used and study at present in typical method be:
Microgranular active carbon is sprayed into bag filter, adsorbs the dioxin (CN1796869) in flue gas；
Active carbon is produced on to the inner layer of dust-removal cloth-bag, adsorbs dioxin (" 2003.03 bag filter of environmental science and activity
Removal effect of the charcoal filter cloth to the dioxin in flue gas ")；
Catalyst and polytetrafluoroethylene fibre are combined into the filter cloth with catalysis, decomposed dioxin (CN102814108)；
UV activation photocatalyst, photodissociation catalytic degradation dioxin (CN101485958)；
Alkaline coolant liquid is sprayed into flue, is reduced dioxin formation condition (CN201997249).
The existing fume treatment technology of comprehensive analysis, it is considered herein that cause fume treatment why very difficult, tens
Over year not major progress main the reason is that:
It is that multiple gases mix gas that a large amount of dust that mixes in flue gas, which is flue gas,.
Firstly, flue gas is mixed with a large amount of dust, aeration, catalyst, ultraviolet light+oxidant, active carbon, spray column are limited
A series of especially conventional, mature, stable Chemical Engineering Technologies such as filler spray column use, cause denitration, sulfur removal technology complexity,
Energy consumption, inefficient and Gao Chengben.
Secondly, a large amount of nitrogen oxides, sulfur dioxide, carbon dioxide and dioxin are mixed in flue gas, work is occupied
Property the degradations such as charcoal, catalyst absorb resource, keep its cost high, efficiency is extremely low.For example, using active powdered carbon, active carbon filtration
Cloth, catalyst filter bag purpose be absorb, conversion dioxin, but in fact, be absorbed first, convert is nitrogen oxides and two
Sulfur oxide, dioxin can only account for minimum ingredient, and the dosage of active carbon and catalyst is far from being enough.Moreover, active carbon with
Flying dust mixing, then be difficult to recover and utilize, catalyst also can be poisoned or be covered quickly.
Summary of the invention
Since crucial problem is the dust mixed in flue gas, is mixing for multiple gases, then the thinking accurately handled
With regard to apparent.As long as the dust that can be first about in flue gas is precisely separated, reach microgram level, at conventional chemical industry means
Managing pure flue gas will become feasible and economical；As long as the major pollutants such as nitrogen oxides, sulfur dioxide are divided from flue gas in advance
From reprocessing remaining flue gas later, other micro hypertoxic polluted gas such as trapping dioxin will become feasible and economical.
According to above-mentioned announcement and judgement to problem, the invention proposes a kind of flue gas treating process processes and its equipment to match
The system schema set, it is characterised in that:
The process flow is,
Fossil fuel or waste incineration generate flue gas entrance → flue-gas temperature adjustment link → Gamma Magnitude dust separation link → wet
Method integrated desulfurizing, denitration link → activated carbon adsorption link → flue gas up to standard pass through smoke stack emission；
The equipment configurations by heat exchanger, Gamma Magnitude dust separator, wet process integrated desulfurizing, denitrating tower, photocatalytic active carbon tower,
Chimney successively forms.
The flue-gas temperature adjustment link, being will be from the fossil fuel sent of burning link or waste incineration with heat exchanger
The flue-gas temperature of generation is adjusted to 40---100 degrees Celsius；
The Gamma Magnitude dust separation link is the dedusting array made of plastic hollow tunica fibrosa and its component, intercepts from institute
The dust in the flue gas that flue-gas temperature adjustment link is sent is stated, the dust content in exiting flue gas is made to be down to 1-30ug/m3；
The wet process integrated desulfurizing, denitration link are equipped with oxidation solution, aerator, ultraviolet lamp tube array, catalyst array, heap
The spray column for filling out formula or regular formula filler, the dedirt flue gas sent from the Gamma Magnitude dust separation link, by the aeration
Device comes into full contact with the oxidation solution, and the oxidation solution is pumped to the spray column, sprays into through spray head described ultraviolet
Lamp tube array and catalyst array come into full contact with and react with the flue gas in rising, and the oxidation solution after reaction continues to flow downward,
Into landfill formula or regular formula filler, continue with rise in smoke reaction, nitrogen oxides, sulfur dioxide, mercury quilt in flue gas
Removing；Rich solution flows back into the bottom of the spray column, and the spray column is discharged, does recycling treatment；Treated gas is from institute
It states and is sent out at the top of spray column, be sent to the activated carbon adsorption link；
The activated carbon adsorption link is the photocatalytic active carbon tower formed with landfill formula active carbon or regular formula active carbon, described
Active carbon is loaded with catalyst, adsorbs to contained dioxin in the flue gas after dedirt, desulphurization and denitration；There are two above institutes
Activated carbon tower is stated alternately to be in work and regeneration recovery；
Treated, and gas up to standard is discharged through the chimney.
Detailed description of the invention
Fig. 1 is a reality of an a kind of flue gas treating process process and its equipment configurations overall plan of the present invention
It illustrates and is intended to.
Fig. 2 is the core component in Gamma Magnitude dust separation link of the present invention --- high temperature with high dust is handled with hollow
A kind of structural schematic diagram of fiber film component.
Specific implementation
In conjunction with the example provided in attached drawing.
The flue gas 0 sent from fossil fuel burning or waste incineration link is existed temperature control by heat exchanger 1
In 40-70 degree Celsius ranges, this partial heat can be recycled.The purpose for reducing temperature is: first is that in order to reduce hollow fibre
The operating temperature of film is tieed up, to create conditions using more cheap material；First is that creating suitable operating condition for oxidation solution.
Flue gas after cooling is sent into Gamma Magnitude dust separation link 2, this is one with hollow-fibre membrane and its membrane module system
At dust treatment device, figure [2] be the membrane module expanded schematic diagram, figure [2] in, 01 is high pressure blowback interface tube；02
It is upper shell；03 is nozzle；04 is lower casing；05 is film wire mouth；06 is sealing ring；07 is hollow-fibre membrane film wire.08 is powder
Dust concentration sensor；09 is small card.Using 09 small card and sealing ring as boundary, the top of the membrane module is mounted in negative pressure cabin,
Lower part is in dust cabin, and by vacuum suction, flue gas enters negative pressure from dust cabin by the film wire wall of the hollow-fibre membrane
Storehouse, the dust in flue gas is intercepted by the film wire wall, to realize the dedirt of flue gas.When film wire wall resistance increases up to a fixed limit
When spending, pressure-air will be deposited on by the nozzle blowback to the upper end of film wire mouth into the inner cavity of the hollow-fibre membrane
Dust accumulation on the film wire wall is blown off.Sensor 08 is used to monitor the filter effect of membrane module.Its detailed schematic exists
There is abundant announcement in 2018102481428 patent applications.Maximum difference with conventional electrostatic dedusting and bag filter be by
Filter efficiency suddenly promotes 3-4 orders of magnitude, realize high-precision from.The content of dust reaches 1---30 in the gas excluded
Microgram is hereinafter, be better than ATMOSPHERICAL BACKGROUND level, and windage does not increase not only, decreases instead.
By high Precision Processing, the flue gas for thoroughly removing dust is admitted to the spray column of wet process integrated desulfurizing, denitration link
3, the bottom of spray column 3 is the pond that oxidation solution 7 is housed, Chi Zhongyou aerator 8.Aerator 8 can be traditional
Aeration head is also possible to bubble-free aeration device made of hollow-fibre membrane, it is therefore an objective to and come into full contact with flue gas more with oxidation solution,
Middle a part of polluted gas will react with oxidation solution, be partially exploded.
There are many schemes for oxidation solution 8, such as sodium hydroxide, hydrogen peroxide, ammonium hydroxide, hypochlorous acid are received, overcurrent acid ammonia, monoethanolamine
Deng and it is various be beneficial to reaction additive.
The top for having mixed oxidation solution to be pumped in spray column 3 with flue gas sprays into 6 He of ultraviolet lamp tube array through spray head
Catalyst array 5 comes into full contact with and reacts with the flue gas in rising, and the oxidation solution after reaction continues to flow downward, into landfill
Formula or regular formula filler 4, continue with rise in smoke reaction, nitrogen oxides, sulfur dioxide, mercury in flue gas are removed；It is rich
Liquid flows back into the bottom of the spray column, is discharged through rich solution pond 12, does recycling treatment.
Treated, and gas is sent out at the top of the spray column, is sent to the activated carbon adsorption link 9；
Activated carbon adsorption link 9 is using the activated carbon tower for dissipating heap formula or the filling of regular formula active carbon, after dedirt, denitration, desulfurization
Flue gas further adsorbed herein, the pernicious gases such as dioxin therein are thoroughly adsorbed.In order to follow active carbon
Ring utilizes, and is equipped with more than two activated carbon towers, works alternatively, and burns degradation dioxin with the method for nitrogen charging high temperature, protect,
Activity recovery charcoal.
Flue gas after processing passes through smoke stack emission.
Usefulness
Essence of the invention is that propose a kind of unique combination, with have disclosed, mature technology novel combination, structure
At a completely new system scheme, fume treatment technology has been advanced to the stage of fine chemistry industry.
The premise of this novel combination is that the present inventor 2018106550249 " handles the doughnut of gas dusty
Membrane module and its application structure " propose in patent application can high-precision, low windage processing exhaust gas dust, the result energy of processing
Enough reach the technology and equipment of microgram class precision.The high-purity separation of dust in flue gas is exactly realized, original many maturations
Chemical Engineering Technology is possible to be used.
Such as aeration process, dust can micro-pore in direct blocking aeration head, dusty gas is impossible to be used to be aerated
Processing.
As quartz burner and catalyst will soon be covered by dust when it is in dust-laden liquid, lose work
With will not actually be used.
Such as packed tower, in the very high occasion of dust content, filler surface is filled up by dust quickly, blocks gas and liquid
Channel is only reduced the duty ratio of filler, and the specific surface area of such filler will be greatly decreased, and treatment effect is difficult to play.
It such as active carbon and catalyst, faces dusty, it is easy to be blocked and cover.In face of high-sulfur, high nitrogen oxides, very
It is easy poisoning and saturation, is only likely to be efficient, long-lived, Yi Hui under conditions of extremely low dust and extremely low sulphur, nitrogen oxides
Multiple.
Due to above, traditional flue gas treating process process must avoid selection, and these are proved to be most mature, have
Effect, reliable, cheap technology, only after the technology that dust processing can be reached Gamma Magnitude occurs, these technologies are just again
Again it is provided with ample scope for abilities.
The processing technique that dust processing can be reached to the technological break-through of Gamma Magnitude for vapor phase contaminants in traditional flue gas is opened
New utilization path has been warded off, has been integrated into a kind of completely new flue gas treating process route and equipment configurations system, here it is this hairs
Bright innovation, applicable place and usefulness place.
Claims (2)
1. the system schema of a kind of flue gas treating process process and its equipment configurations, it is characterised in that:
The process flow is that fossil fuel or waste incineration generate flue gas entrance → flue-gas temperature adjustment link → Gamma Magnitude powder
Dirt separation link → wet process integrated desulfurizing, denitration link → activated carbon adsorption link → flue gas up to standard pass through smoke stack emission；
The equipment configurations are, by heat exchanger, Gamma Magnitude dust separator, wet process integrated desulfurizing, denitrating tower, photocatalytic active carbon
Tower, chimney successively form.
2. the system schema of a kind of flue gas treating process process according to claim 1 and its equipment configurations, feature exist
In:
The flue-gas temperature adjustment link is to be generated the fossil fuel or waste incineration sent from burning link with heat exchanger
Flue-gas temperature be adjusted to 40---100 degrees Celsius；
The Gamma Magnitude dust separation link is the dedusting array made of plastic hollow tunica fibrosa and its component, intercepts from institute
The dust in the flue gas that flue-gas temperature adjustment link is sent is stated, the dust content in exiting flue gas is down to 1-30ug/m3；
The wet process integrated desulfurizing, denitration link are equipped with oxidation solution, aerator, ultraviolet lamp tube array, catalyst array, heap
The spray column for filling out formula or regular formula filler, the dedirt flue gas sent from the Gamma Magnitude dust separation link, by the aeration
Device comes into full contact with the oxidation solution, and the oxidation solution is pumped to the spray column, sprays into through spray head described ultraviolet
Lamp tube array and catalyst array come into full contact with and react with the flue gas in rising, and the oxidation solution after reaction continues to flow downward,
Into landfill formula or regular formula filler, continue with rise in smoke reaction, nitrogen oxides, sulfur dioxide, mercury quilt in flue gas
Removing；Rich solution flows back into the bottom of the spray column, and the spray column is discharged, does recycling treatment；Treated gas is from institute
It states and is sent out at the top of spray column, be sent to the activated carbon adsorption link；
The activated carbon adsorption link is the photocatalytic active carbon tower formed with landfill formula active carbon or regular formula active carbon, described
Active carbon is loaded with catalyst, adsorbs to contained dioxin in the flue gas after dedirt, desulphurization and denitration；There are two above institutes
Activated carbon tower is stated alternately to be in work and regeneration recovery；
Treated, and gas up to standard is discharged through the chimney.
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