CN106039913B - A kind of flue gas purification system - Google Patents
A kind of flue gas purification system Download PDFInfo
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- CN106039913B CN106039913B CN201610662825.9A CN201610662825A CN106039913B CN 106039913 B CN106039913 B CN 106039913B CN 201610662825 A CN201610662825 A CN 201610662825A CN 106039913 B CN106039913 B CN 106039913B
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- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000746 purification Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000004140 cleaning Methods 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 239000000376 reactant Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000000428 dust Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000003517 fume Substances 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 229940079593 drug Drugs 0.000 claims 1
- 238000000034 method Methods 0.000 description 14
- 238000006477 desulfuration reaction Methods 0.000 description 8
- 238000004064 recycling Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/10—Combinations of devices covered by groups B01D45/00, B01D46/00 and B01D47/00
-
- 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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- 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
- B01D53/75—Multi-step processes
-
- 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
- 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
- B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/40—Mixed oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a kind of flue gas purification systems comprising cold and hot crosspoint, gas cleaning unit and the chemical dosing unit for gas cleaning unit add auxiliary agent, reactant cooling for flue gas；Gas cleaning unit is in tower-shaped, including reactor shell, mixing liquid chamber, gas chamber, filtration treatment unit, demister are provided, in sequence from bottom to top, with inside the reactor shell, gas outlet is equipped at the top of the reactor shell, be equipped on the reactor enclosure body sidewall with the exhaust gas entrance of the gas chamber connection, with the spray liquid entrance and temperature controller and fluid level controller of the mixture export for mixing liquid chamber connection and the filtration treatment unit connection, exhaust gas entrance passes through pipeline and cold and hot crosspoint connection by piping connection blower, blower；Mixture export is equipped with valve, and spray liquid entrance passes through piping connection chemistry dosing unit, meanwhile, the external moisturizing pipeline of spray liquid entrance connection.
Description
Technical field
The present invention relates to environment protection fields, more particularly to a kind of flue gas purification system.
Background technique
Industrial civilization and urban development, for the mankind create great wealth while, also billions of tons count exhaust gas and
Waste is discharged among atmosphere, and atmospheric thermodynamics for the survival of mankind is but at aerial garbage warehouse and poison gas library.Harmful gas in atmosphere
When body and pollutant reach a certain concentration, will the mankind and environment be brought with huge disaster, air pollution has become whole world city
A unavoidable reality in city's resident living.And coal-fired, industrial waste gas caused by fuel oil equipment is the weight of air pollution
Want source.
By the end of the year 2006, the unit capacity of single China's coal fired power plant installation desulphurization plant is such as all thrown up to 1.5 hundred million kilowatts
Enter operation, will be more than every year 20000000 tons by the quantity of the desulfuration waste of generation；Currently, when 3.6 hundred million kilowatts of coal fired power plant
When all installing desulphurization plant and putting into operation, the quantity of annual desulfuration waste will be up to 60,000,000 tons or more；All installations
Denitration device and when putting into operation, the quantity of annual denitrfying agent waste also will be up to 30,000,000 tons or more；All installation dedirt is set
Standby and when putting into operation, the quantity of annual dedirt waste will be up to 400,000,000 tons or more.
It can be seen that being the weight for administering air pollution for the purification of industrial waste gas caused by the equipment such as fire coal, fuel oil
In it is weight.
Currently, coal-fired, fuel oil equipment discharge flue gas purification is all paid much attention in countries in the world, tens of kinds of rows have been developed
Effective flue gases purification, wherein the flue gases purification being widely used has: respectively facture, half comprehensive treatment method.
Difference facture: refer to the pernicious gas, dust etc. by different device and method to heterogeneity in exhaust gas
It handles respectively, specific as follows:
1, dedusting: dedusting is had by efficiency point: ceramic element dedusting, high-pressure electrostatic bag-type dust, water film dedusting, still
Low efficiency is recycled, cleaner is at high cost, and practical efficiency of dust collection is no more than 90%.
2, desulfurization: there are dry desulfurization (recycling elemental sulfur), wet desulphurization (sulfate is recycled in buck method desulfurization), but return
Yield is low, and desulphurization plant, additive are at high cost, and practical sulphur removal efficiency is no more than 80%.
3, denitration: SNCR method, SCR method, be using ammonia+catalyst, under the conditions of high medium temperature, catalytic reduction method denitration at
Nitrogen and steam are discharged into atmosphere, and only investment forms bottomless pit formula investment without recycling, and practical denitration efficiency is no more than
70%.
4、CO2Removing: existing exhaust gas purification equipment is free of CO2Removing means.
Half comprehensive treatment method: refer to and desulfurization and dedusting is integrated (dust removal with desulfurization by water film method) or denitration dedirt is combined into one
Body.Denitration cannot be integrated with desulfurization, be because the catalyst in denitration is easily failed by sulfur poisoning.This half integrated treatment
Method can reduce sub-fraction investment, but gas cleaning improve be not obvious, and half synthesis recycling it is inconvenient and not cost-effective.
And if the direct outlet of exhaust gas after doup legal processes, manure contamination fast speed, caused by secondary pollution according to
It is old very serious.
Summary of the invention
In view of this, using selectivity to urge the main purpose of the present invention is to provide a kind of fume treatment purification system
Change neutralisation, flue gas ash removal, desulphurization and denitration, demisting intersect progress, alternatively referred to as low-temperature treatment method in same container, whole
The manufacturing cost of equipment is low, and gas cleaning effect is more thorough.
To achieve the goals above, technical scheme is as follows:
A kind of flue gas purification system comprising for the cold and hot crosspoint of flue gas cooling, gas cleaning unit and be used for
To gas cleaning unit addition auxiliary agent, the chemical dosing unit of reactant；
The gas cleaning unit is in tower-shaped comprising reactor shell, inside the reactor shell from bottom to top according to
It is secondary to be equipped with mixing liquid chamber, gas chamber, filtration treatment unit, demister, gas outlet is equipped at the top of the reactor shell, in the reaction
Device housing sidewall be equipped with the exhaust gas entrance of the gas chamber connection, with the mixture export for mixing liquid chamber connection and mistake
Filter the spray liquid entrance of processing unit connection and the temperature controller for measuring and controlling mixeding liquid temperature and for measuring and controlling
The fluid level controller of mixed liquor liquid level processed, the exhaust gas entrance by piping connection blower, the blower by pipeline with it is described
Cold and hot crosspoint connection；
The mixture export is equipped with valve, and the spray liquid entrance is by chemistry dosing unit described in piping connection, together
When, the external moisturizing pipeline of the spray liquid entrance connection.
In the present invention, the cold and hot crosspoint includes cold and hot crosspoint shell and is located at the cold and hot exchange singly
The gravitational dust collection case and cool-heat-exchanger of first enclosure interior, and the cool-heat-exchanger is located on the gravitational dust collection case, institute
The top for stating cold and hot crosspoint shell is equipped with air inlet, and the side of the cold and hot crosspoint shell is equipped with thermometer, liquid
Position meter and gas outlet, the cool-heat-exchanger are equipped with inlet and outlet, water inlet and external cold water source pipeline connection,
Water outlet and external drainage pipeline connection, the blower pass through pipeline and the gas outlet connection.
In the present invention, the filtration treatment unit includes multiple filtering modules integrated, each filtering
Module includes bracket, even water distributor, dust removal filter element, liquid guide device, catalyzed filter element and sealing element, the dust removal filter element,
The liquid guide device, the catalyzed filter element, the even water distributor are successively installed on from bottom to top on the inside of the bracket, described
Sealing element is rubber, is installed between the catalyzed filter element surrounding and the rack inner wall, and sealing fume, the catalyst are used for
Filter core is the ceramics with porous structure.
In the present invention, the chemical dosing unit includes including auxiliary agent dosing unit, reactant dosing unit, each dosing
Unit includes sequentially connected medicine container, meter, conveying equipment and shut-off valve；The shut-off valve import of each dosing unit
With corresponding conveying equipment connection, the cut-off valve outlet of each dosing unit with the spray liquid entrance connection.
In the present invention, the gas outlet be equipped with for monitor be discharged gas whether He Ge on-line monitoring unit.
Compared with the prior art, the invention has the beneficial effects that:
The first, energy saving.Flue gas ash removal, desulphurization and denitration are completed in the same device, and equipment volume is small, and it is empty to save land occupation
Between, investment cost is low；It, which is designed, uses modularization, saves the set-up time.In operational process, due to sulfur dioxide and nitrogen oxidation
Object has catalytic action each other, and some oxides in dust and sulfuric acid, nitric acid, carbonic acid can neutralize generation under the action of water
Salt saves a large amount of denitration sulfur-removing additives；The recycling to save of water and mixed liquor uses water；Filter core can be repeatedly sharp
With reduction filter core investment cost；Vulnerable part is less, reduces maintenance cost, and extends the service life of whole system.The flue gas
Processing system automatic control level is high, system resistance is small, and electric energy loss is few.
The second, environmentally friendly.It handles postindustrial flue gas emission and reaches minimum discharge standard
Nitrogen oxides≤30mg/m3
Sulfur dioxide≤20mg/m3
Sulfur trioxide≤2.5mg/m3
Dust≤5mg/m3
Mercury and compound≤0.003mg/m3
In conclusion the flue gas purification system small investment, structure is simple, at low cost, and purifies more thorough.
Detailed description of the invention
Fig. 1 is one schematic diagram of flue gas purification system embodiment of the present invention；
Fig. 2 is two schematic diagram of flue gas purification system embodiment of the present invention；
Fig. 3 is the structure chart of filtering module in the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment elaborate.Many concrete details are explained in the following description convenient for adequately understanding this hair
It is bright.But the present invention can be implemented with being much different from other modes described herein, those skilled in the art can not disobey
It is similarly modified in the case where carrying on the back intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
Embodiment one
Referring to Fig. 1 and Fig. 3, the flue gas purification system of the present embodiment includes the cold and hot crosspoint 1 cooling for flue gas, cigarette
Gas clean unit 2 and for the gas cleaning unit 2 addition auxiliary agent, reactant chemical dosing unit 3.
Cold and hot crosspoint 1 is including cold and hot crosspoint shell 10 and inside the cold and hot crosspoint shell 10
Gravitational dust collection case 14 and cool-heat-exchanger 16, and the cool-heat-exchanger 16 is located on the gravitational dust collection case 14, the cold and hot friendship
The top for changing unit housings 10 is equipped with air inlet 11, which is equipped with thermometer 12, liquidometer 13
And gas outlet 15.Cool-heat-exchanger 16 is equipped with water inlet 161 and water outlet 160, water inlet 161 and external cold water source pipeline
Connection, water outlet 160 and external drainage pipeline connection.
Gas cleaning unit 2 is in tower-shaped comprising reactor shell 21, inside the reactor shell 21 from bottom to top according to
It is secondary to be equipped with mixing liquid chamber 25, gas chamber 24, filter element 23, demister 22, gas outlet 20 is equipped at the top of the reactor shell 21,
It is equipped on the side wall of the reactor shell 21 with the exhaust gas entrance 212 of 24 connection of gas chamber, with described and mixes liquid chamber 25
The spray liquid entrance 214 of logical mixture export 213 and 23 connection of filtration treatment unit, is equipped with online prison on gas outlet 20
Unit 200 is surveyed, exhaust gas entrance 212 passes through blower 26 and 15 connection of gas outlet.The spray liquid entrance 214 passes through piping connection institute
State chemical dosing unit 3, meanwhile, the 214 external moisturizing pipeline of connection of spray liquid entrance, external moisturizing pipeline be used for
The gas cleaning unit 2 adds water required for gas cleaning.
Meanwhile it being additionally provided with the temperature controller 211 for measuring and controlling mixeding liquid temperature on the gas cleaning unit 2 and is used for
The fluid level controller 210 of measurement and control mixed liquor liquid level.
The mixture export 213 passes through piping connection valve 214.
Filtration treatment unit 23 includes multiple filtering modules integrated, and each filtering module includes bracket
230, even water distributor 231, catalyzed filter element 232, liquid guide device 233, dust removal filter element 234, sealing element (not shown), institute
State dust removal filter element 234, the liquid guide device 233, the catalyzed filter element 232, the even water distributor 231 successively from bottom to top
It is installed on 230 inside of bracket, the sealing element is rubber, is installed on 232 surrounding of catalyzed filter element and the bracket 230
Between inner wall, it is used for sealing fume, the catalyst filter core 232 to be one kind with aluminium oxide, titanium oxide, zirconium oxide isoreactivity metal
Oxide is through having the high technology ceramics of porous structure made of high temperature sintering.
Chemical dosing unit 3 includes auxiliary agent dosing unit 30 and reactant dosing unit 31, the auxiliary agent dosing unit 30 packet
Sequentially connected auxiliary tank 300, meter 301, pipeline pump 302, blending tank 303 and shut-off valve 304 are included, the reactant dosing list
Member 31 includes sequentially connected reactant tank 310, meter 311, pipeline pump 312, blending tank 313, shut-off valve 314.Shut-off valve
304, the outlet of shut-off valve 314 passes through pipeline connection with spray liquid entrance 29.
When flue gas purification system is started to work, auxiliary agent dosing unit 30, reactant dosing unit 31 start simultaneously at work,
And auxiliary agent and reactant required for being reacted by spray liquid entrance 29 to the addition of gas cleaning unit 2；External water source start to
The gas cleaning unit 2 adds water required for gas cleaning.
In the treatment process of flue gas, flue gas enters cool-heat-exchanger unit 1 by air inlet 11, and flue gas is cold by recycling
But after temperature be down to 80C ° hereinafter, and during the circulating cooling of flue gas, the bulky grain dust in flue gas is by heat exchange unit
In 1 cold water intercept, fall into gravitational dust collection case 14.Flue gas after cooling is guided by blower 26 to gas cleaning unit 2
Discarded entrance 212, flue gas enters gas cleaning unit 2 and starts to purify.At this moment flue gas passes through filter element 23 from bottom to top,
Dust, heavy metallic oxide, oxysulfide, nitrogen oxides, oxycarbide in flue gas are successively got rid of, and are formed with aqueous solution
Mixed liquor, the mixed liquor are entered in mixing liquid chamber 25 by liquid guide device 233；Some water is vaporized into is had since smoke temperature is higher
Steam carries steam by the clean gas of abjection harmful substance and continues upward through except water mist device 22, and at this moment steam is removed water mist
Device 22 is removed and is flowed downwardly into mixing liquid chamber 25, and is passed through the clean gas dehydrated except water mist device 22 and continued up again
After monitoring unit 200 on-line, enter atmosphere from gas outlet 20.If it is exceeded that gas contains nuisance, unit is monitored on-line
200 will show and control the supply amount that chemical dosing unit 3 increases auxiliary agent and reactant, until gas emission compliance is normal.
Mixed liquor is discharged from mixture export 213 by valve 214.
In above-described embodiment, the mixed liquor being discharged from valve 214 can also be by spray liquid entrance 214, into gas cleaning
Unit 2 continues cycling through utilization, and to mixed liquor periodic monitoring, if reaching the direct outlet of saturation state, not recycling.
When gas cleaning starts, external water source enters even water distributor 213 to gas cleaning by spray liquid entrance 214
2 moisturizing of unit, when 213 water excess of even water distributor, fluid level controller 210 will control the inflow of external water source；Temperature
Device 211 is controlled by controlling the not overtemperature of the temperature in external cold source adjusting reactor shell 21, keeps working normally.
Embodiment two
Referring to figs. 2 and 3, on the basis of example 1, in the side wall increase of cold and hot crosspoint shell 10 and gravity
The mixed liquor dedusting entrance 17 and mixed liquor dedusting outlet 18 that dust cleaning case 14 communicates, the outlet connection mixed liquor dedusting of valve 214
Entrance 17.In this way, mixed liquor enters gravitational dust collection case 14, counterweight by mixed liquor dedusting entrance 17 during gas cleaning
Power dust cleaning case 14 is discharged after being rinsed from mixed liquor dedusting outlet 18.
This embodiment compared with embodiment one, increase a mixed liquor wash away gravitational dust collection case 14 channel, it can be achieved that
Gravitational dust collection case 14 scrubs cleaning online, eliminates the workload artificially cleared up, while improving entire smoke processing system
Working efficiency.
Equally, in above-described embodiment, spray liquid entrance can also be passed through from the mixed liquor of 18 discharge of mixed liquor dedusting outlet
214, utilization is continued cycling through into gas cleaning unit 2, and to mixed liquor periodic monitoring, if it is directly outer to reach saturation state
Row, not recycling.
The above, good specific embodiment only of the invention, but scope of protection of the present invention is not limited thereto, appoints
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, all by what those familiar with the art
It is covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection scope of claims
Subject to.
Claims (2)
1. a kind of flue gas purification system, which is characterized in that it includes the cold and hot crosspoint cooling for flue gas, gas cleaning list
Chemical dosing unit first and for adding auxiliary agent, reactant to the gas cleaning unit；
The gas cleaning unit is in tower-shaped comprising reactor shell is successively set from bottom to top inside the reactor shell
There are mixing liquid chamber, gas chamber, filtration treatment unit, demister, gas outlet is equipped at the top of the reactor shell, in the reactor enclosure
Body sidewall be equipped with the exhaust gas entrance of the gas chamber connection, with the mixture export for mixing liquid chamber connection, and filtering at
Manage the spray liquid entrance and temperature controller for measuring and controlling mixeding liquid temperature and mixed for measuring and controlling of unit connection
Close the fluid level controller of liquid liquid level, the exhaust gas entrance by piping connection blower, the blower by pipeline with it is described cold and hot
Crosspoint connection；
The mixture export is equipped with valve, and the spray liquid entrance passes through chemistry dosing unit described in piping connection, meanwhile, institute
State the external moisturizing pipeline of spray liquid entrance connection；
Wherein, the cold and hot crosspoint include cold and hot crosspoint shell and be located at the cold and hot crosspoint enclosure interior
Gravitational dust collection case and cool-heat-exchanger, and the cool-heat-exchanger is located on the gravitational dust collection case, the cold and hot exchange
The top of unit housings is equipped with air inlet, and the side of the cold and hot crosspoint shell is equipped with thermometer, liquidometer and goes out
Port, the cool-heat-exchanger are equipped with inlet and outlet, water inlet and external cold water source pipeline connection, water outlet and outer
Run in waterpipe connection, the blower passes through pipeline and the gas outlet connection；
The filtration treatment unit includes multiple filtering modules integrated, and each filtering module includes bracket,
Even water distributor, dust removal filter element, liquid guide device, catalyzed filter element and sealing element, the dust removal filter element, the liquid guide device,
The catalyzed filter element, the even water distributor are successively installed on from bottom to top on the inside of the bracket, and the sealing element is rubber, peace
Loaded between the catalyzed filter element surrounding and the rack inner wall, it is used for sealing fume, the catalyzed filter element to be that have porous knot
The ceramics of structure；
The chemistry dosing unit includes auxiliary agent dosing unit, reactant dosing unit, and each dosing unit includes being sequentially connected
Medicine container, meter, conveying equipment and shut-off valve；The shut-off valve import of each dosing unit and corresponding conveying equipment
Connection, the cut-off valve outlet of each dosing unit with the spray liquid entrance connection.
2. flue gas purification system according to claim 1, which is characterized in that the gas outlet is equipped with for monitoring discharge
Gas whether He Ge on-line monitoring unit.
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| CN201610662825.9A CN106039913B (en) | 2016-08-12 | 2016-08-12 | A kind of flue gas purification system |
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| CN201610662825.9A CN106039913B (en) | 2016-08-12 | 2016-08-12 | A kind of flue gas purification system |
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| CN106039913A CN106039913A (en) | 2016-10-26 |
| CN106039913B true CN106039913B (en) | 2019-01-08 |
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| CN108854478A (en) * | 2018-07-10 | 2018-11-23 | 界首市菁华科技信息咨询服务有限公司 | A kind of secondary lead smelting exhaust closing desulfurization and dedusting circulatory system and technique of zero discharge |
| CN110394043B (en) * | 2019-07-29 | 2022-03-25 | 庄建中 | Device and method for simultaneously desulfurizing, denitrating, dedusting and demisting flue gas |
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| CN202778203U (en) * | 2012-09-07 | 2013-03-13 | 艾淑艳 | Active coke denitration process system |
| CN206121410U (en) * | 2016-08-12 | 2017-04-26 | 王涛 | Flue gas purification system |
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Effective date of registration: 20210105 Address after: 102488 812, 7th floor, building 3, courtyard 1, Tianxing street, Gongchen street, Fangshan District, Beijing Patentee after: Beijing Kaiyuan Environmental Protection Technology Co.,Ltd. Address before: 100801 room 138, North building, 45 fuxingmennei street, Beijing (Xidan office area, China Federation of Commerce) Patentee before: Wang Tao |