CN108579300A - A kind of steel plant's blast furnace flue gas wet purification processing method and system - Google Patents
A kind of steel plant's blast furnace flue gas wet purification processing method and system Download PDFInfo
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- CN108579300A CN108579300A CN201810470788.0A CN201810470788A CN108579300A CN 108579300 A CN108579300 A CN 108579300A CN 201810470788 A CN201810470788 A CN 201810470788A CN 108579300 A CN108579300 A CN 108579300A
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- gas
- wet
- flue gas
- processing
- blast furnace
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000003546 flue gas Substances 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000000746 purification Methods 0.000 title claims abstract description 30
- 238000003672 processing method Methods 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 85
- 238000012545 processing Methods 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000000428 dust Substances 0.000 claims abstract description 49
- 239000007921 spray Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 37
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 28
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 25
- 238000005189 flocculation Methods 0.000 claims abstract description 23
- 230000016615 flocculation Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000001179 sorption measurement Methods 0.000 claims abstract description 19
- 239000000243 solution Substances 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000000889 atomisation Methods 0.000 claims description 12
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 239000007800 oxidant agent Substances 0.000 claims description 11
- 239000003463 adsorbent Substances 0.000 claims description 10
- 239000000443 aerosol Substances 0.000 claims description 10
- 239000008263 liquid aerosol Substances 0.000 claims description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002808 molecular sieve Substances 0.000 claims description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000008394 flocculating agent Substances 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 239000012716 precipitator Substances 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 26
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000012805 post-processing Methods 0.000 abstract description 3
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 abstract description 3
- 238000013459 approach Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000012387 aerosolization Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- HNBFUFIYQWYCDM-UHFFFAOYSA-N oxygen(2-) sulfane titanium(4+) Chemical compound [O--].[O--].S.[Ti+4] HNBFUFIYQWYCDM-UHFFFAOYSA-N 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
-
- 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
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Abstract
The present invention relates to field of steel production, more particularly to a kind of steel plant's blast furnace flue gas wet purification processing method and system.The present invention provides a kind of steel plant's blast furnace flue gas wet purification processing method, including：Flocculation liquid will be introduced in pending flue gas, and carry out water film dedusting processing；Oxidation solution is introduced into gained gas, and carries out lye spray process；Ozone is introduced into gained gas, and carries out wet-esp processing；Gained gas is subjected to adsorption treatment.Steel plant's blast furnace flue gas wet purification processing method and system provided by the present invention pass through the processing methods such as flocculation, water film dedusting, oxidation, lye spray, ozone mixing, wet-esp, absorption, the pollutants such as dust particle, oxysulfide, nitrogen oxides and carbon monoxide in steel plant's blast furnace flue gas can effectively be reduced, it is a kind of reasonable, efficient post-processing approach, is suitble to industrialization large-scale application.
Description
Technical field
The present invention relates to field of steel production, more particularly to a kind of steel plant's blast furnace flue gas wet purification processing method and
System.
Background technology
Blast furnace typically refers to make furnace shell with steel plate, and the smelting equipment of fireproof brick inner lining is built in shell.Due to blast furnace technology
It is good with economic indicator, simple for process, output is big, labor productivity is high, low power consumption and other advantages, therefore this method produce
Iron account for the overwhelming majority of world iron total output.
Iron ore, coke, slag making usually are packed into flux (lime stone), from positioned at lower furnace from furnace roof when blast fumance
It is blown into preheated air along the air port in stove week.(also coal injection, heavy oil, natural gas etc. are auxiliary for the blast furnace having for coke at high temperature
Combustion-supporting material) in carbon with blast in air oxygen burning generate carbon monoxide and hydrogen, in stove in uphill process remove de-iron
Oxygen in ore, to which reduction obtains iron.The molten iron produced is released from iron mouth, unreduced impurity and lime stone etc. in iron ore
Flux, which combines, generates clinker, is discharged from cinder notch, and the exhaust gas of generation is then discharged from furnace roof.
In recent years, with the development of science and technology with the progress of the mankind, the requirement for various waste materials, exhaust gas emission aftertreatment is got over
Come it is higher, and since smelting industry has the characteristics that discharge amount of exhaust gas is big, pollutant load is high, so being badly in need of to being similar to blast furnace
The post-processing technology of the exhaust gas such as flue gas is further improved.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of steel plant's blast furnace flue gas wet types
Purifying treatment method and system, for solving the problems of the prior art.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of steel plant's blast furnace flue gas wet type
Purifying treatment method, including：
1) flocculation liquid will be introduced in pending flue gas, and carry out water film dedusting processing；
2) oxidation solution is introduced into gained gas, and carries out lye spray process；
3) ozone is introduced into gained gas, and carries out wet-esp processing；
4) gained gas is subjected to adsorption treatment.
In some embodiments of the invention, the flocculation liquid is flocculation liquid aerosol, and atomization droplets diameter is 5~200um,
Flocculation liquid aerosol dosage is 1~100ml/ (m3*min)。
In some embodiments of the invention, the flocculation liquid is the aqueous solution of flocculant, and the flocculant is selected from inorganic
Flocculant and/or organic flocculant.
In some embodiments of the invention, the flocculant is selected from aluminum salt flocculant and/or Ferric Salt Flocculants.
In some embodiments of the invention, a concentration of 1-500mg/L of the flocculant.
In some embodiments of the invention, the liquid-gas ratio of water film dedusting processing is 0.1-0.6L/m3。
In some embodiments of the invention, the method for water film dedusting processing is selected from impact moisture film and handles, at inertia moisture film
One or more combinations in reason and centrifugal water film processing.
In some embodiments of the invention, the oxidation solution is oxidation solution aerosol, and atomization droplets diameter is 5~200um,
Oxidation solution aerosol dosage is 1~100ml/ (m3*min)。
In some embodiments of the invention, the oxidation solution is the aqueous solution of oxidant, and the oxidant is selected from Gao Meng
One or more of sour potassium, potassium hyperchlorate, ammonium persulfate, sodium dichromate and sodium hypochlorite mixture.
In some embodiments of the invention, a concentration of 0.05-2mol/L of the oxidation solution.
In some embodiments of the invention, the lye used in lye spray process includes NH4HCO3And/or
(NH4)2CO3, a concentration of 0.1-5mol/L of lye.
In some embodiments of the invention, the liquid-gas ratio in lye spray process is 1.5-3L/m3, sprinkle density 50-
100m3/(m2*h)。
In some embodiments of the invention, the introduction volume of ozone is 100-1500mg/m in gas3。
In some of the invention embodiments, the wet-esp processing selected from the processing of cross-flow type wet-esp and/
Or vertical-flow wet-esp processing.
In some embodiments of the invention, the wet electrical dust precipitator uses board-like or multilayer screen type anode, fish-bone
Needle pierces line cathode, field gas velocity 0.4-1.5m/s, residence time 6-12s, water consumption 0.2-10t/h, power 100-
400KW/h。
In some embodiments of the invention, adsorption treatment is carried out using activated carbon and/or molecular sieve.
In some embodiments of the invention, adsorption treatment air speed is 2000-9000h-1, superficial linear velocity in a column 0.2-0.5m/s,
Residence time 2-5s.
Second aspect of the present invention provides a kind of steel plant's blast furnace flue gas wet purification processing system, including：
Water film dust removal device for pending gas to be carried out to water film dedusting processing, the entrance of the water film dust removal device
Equipped with for the first atomising device for introducing flocculation liquid in flue gas will to be handled；
Lye spray equipment for water film dedusting processing gained gas to be carried out to lye spray process, the lye spray
The entrance of device is equipped with the second atomising device for introducing oxidation solution into water film dedusting processing gained gas；
Wet type electric dust-removing device for gas obtained by lye spray process to be carried out to wet-esp processing, the wet type
The entrance of electrical dust collector device is equipped with the ozone generating-device for introducing ozone to gas obtained by lye spray process；
Adsorbent equipment for wet-esp processing gained gas to be carried out to adsorption treatment.
In some embodiments of the invention, first atomising device and/or the second atomising device are selected from pressure atomization
One or more combinations in device, ultrasonic ultrasonic delay line memory ultrasonic wave.
In some embodiments of the invention, the atomized drop grain of first atomising device and/or the second atomising device
Diameter is 5~200um, and aerosol dosage is 1~100ml/ (m3*min)。
In some embodiments of the invention, the liquid-gas ratio of water film dust removal device is 0.1-0.6L/m3。
In some embodiments of the invention, water film dust removal device is selected from impact water dust scrubber, inertia water dust scrubber
With one or more combinations in centrifugal water film dust remover.
In some embodiments of the invention, the lye used in lye spray equipment includes NH4HCO3And/or
(NH4)2CO3, a concentration of 0.1-5mol/L of lye.
In some embodiments of the invention, the liquid-gas ratio in lye spray equipment is 1.5-3L/m3, sprinkle density 50-
100m3/(m2*h)。
In some embodiments of the invention, the ozone occurrence quantity of ozone generating-device is 100-1500mg/m3。
In some of the invention embodiments, the Wet type electric dust-removing device be selected from cross-flow type Wet type electric dust-removing device and/
Or vertical-flow Wet type electric dust-removing device.
In some embodiments of the invention, the adsorbing medium in adsorbent equipment is selected from activated carbon and/or molecular sieve.
Description of the drawings
Fig. 1 is shown as processing method and system schematic of the present invention.
Component label instructions
1 water film dust removal device
2 first atomising devices
3 lye spray equipments
4 second atomising devices
5 Wet type electric dust-removing devices
6 ozone generating-devices
7 adsorbent equipments
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
One aspect of the present invention provides a kind of steel plant's blast furnace flue gas wet purification processing method, including：By pending flue gas
Middle introducing flocculation liquid, and carry out water film dedusting processing.Steel plant's blast furnace flue gas wet purification processing method provided by the present invention
Processing steel plant blast furnace flue gas is primarily can be used for, the key component of the pending flue gas generally includes dust particle, sulphur
The components such as oxide, nitrogen oxides and carbon monoxide, wherein dust particle can reach 1600mg/Nm3More than, titanium dioxide
Sulfur content can reach 1000mg/Nm3More than, content of nitric oxide can reach 400mg/Nm3More than, carbon monoxide content can
To reach 1000mg/Nm3More than, remaining is mainly N2..The flocculation liquid can be flocculation liquid aerosol, and atomization droplets diameter can be with
For 5~200um, flocculation liquid aerosol dosage can be 1~100ml/ (m3*min).Suitable side may be selected in those skilled in the art
Flocculation liquid aerosol is introduced in normal direction gas, such as the mode of sprinkling may be used.The flocculation liquid can be the water-soluble of flocculant
Liquid, the flocculant can be selected from inorganic flocculating agent and/or organic flocculant, and the flocculant is preferably selected from aluminum salt flocculant
And/or Ferric Salt Flocculants, a concentration of of the flocculant can be with 1-500mg/L.The water film dedusting processing, which is often referred to utilize, to be contained
Moisture film caused by some way is used on dust and gas body impact dust remover inner wall or other special components, so that dust is captured by moisture film, gas
The processing method that body is purified can will usually be obtained only by flocculated large dust particle by moisture film capture in flue gas
Change.The liquid-gas ratio of the water film dedusting processing can be 0.1-0.6L/m3, the method for water film dedusting processing, which can be selected from, impacts water
One or more combinations in film process, the processing of inertia moisture film and centrifugal water film processing, the water film dedusting processing are brought about the desired sensation
Large dust particle in body can be flocculated liquid and wad a quilt with cotton and be substantially removed.
Steel plant's blast furnace flue gas wet purification processing method provided by the present invention can also include：Draw into gained gas
Enter oxidation solution, and carries out lye spray process.In the processing method, the main function for being introduced into oxidant is in oxidation flue gas
SO2, NO and volatile organic matter, the oxidation solution can be oxidation solution aerosol, and atomization droplets diameter can be 5~200um, oxygen
It can be 1~100ml/ (m to change liquid aerosol dosage3* min) (every cubic metre per minute of exhaust gas uses the atomized liquid of 1-100ml).
Those skilled in the art may be selected suitable method and introduce oxidation solution aerosol into gas, such as the mode of sprinkling may be used.
The oxidation solution can be oxidant aqueous solution, the oxidant can be selected from potassium permanganate, potassium hyperchlorate, ammonium persulfate,
The concentration of one or more of sodium dichromate and sodium hypochlorite mixture, the oxidation solution can be 0.05-2mol/L.It is described
The main function of lye spray process is the SO in flue gas after aoxidizing3、NO2Equal sour gas absorb.Institute in lye spray process
The lye used may include NH4HCO3And/or (NH4)2CO3, the concentration of lye can be 0.1-5mol/L, lye spray process
In liquid-gas ratio can be 1.5-3L/m3, sprinkle density can be with 50-100m3/(m2* h), gas obtained by the lye spray process
In nitrogen oxides (mainly NO) NO soluble easily in water can be oxidized to2, high-order nitrogen oxides (NO2) and oxysulfide (SO2、
SO3) finally absorbed and be substantially removed by lye.
Steel plant's blast furnace flue gas wet purification processing method provided by the present invention can also include：Draw into gained gas
Enter ozone, and carry out wet-esp processing, the main function for introducing ozone is to generate the ozone with strong oxidizing property, by lye
The SO to escape in spray column2, NO and other dysoxidizable substances and the further Oxidative demages of CO, substantially destroy, remove this
The substance that can be aoxidized a bit, the introduction volume of ozone can be 100-1500mg/m in gas3.The wet-esp processing is logical
Often refer to and make dust charged using high-voltage corona discharge, it is charged after dust be collected to realize removal in the effect of electric field force
The main function of the processing method of dust in gas, wet-esp processing is to acid mist, heavy metal, PM10And PM2.5Fine powder
Dirt has good removal effect, can effectively trap fine particle (PM2.5、SO3Acid mist formed aerosol), heavy metal (Hg,
As, Se, Pb, Cr), organic matter (polycyclic aromatic hydrocarbon, bioxin) etc., to remove the above-mentioned substance that can be effectively trapped, institute substantially
The processing of cross-flow type wet-esp and/or the processing of vertical-flow wet-esp can be selected from by stating wet-esp processing.It is described wet
Formula electric precipitator can be board-like or multilayer screen type anode, and fish-bone needle pierces line cathode, and field gas velocity can be 0.4-1.5m/
S, residence time can be 6-12s, and water consumption can be 0.2-10t/h, and power can be 100-400KW/h.
Steel plant's blast furnace flue gas wet purification processing method provided by the present invention can also include：Gained gas is carried out
Adsorption treatment, the adsorption treatment are often referred to adsorb gas using adsorbing medium, to remove adsorbable object in gas
The processing method of matter, the carbon dioxide in gas obtained by the adsorption treatment can effectively be adsorbed by adsorbent, to most of or
It is substantially removed.Suitable material usually may be used in those skilled in the art or method carries out adsorption treatment, usually utilizes
The adsorption capacity of microporous medium further adsorbs the adsorbable component in gas, to make gas reach discharge standard,
For example, activated carbon and/or molecular sieve progress adsorption treatment may be used.
As shown in Figure 1, another aspect of the present invention provides a kind of steel plant's blast furnace flue gas wet purification processing system, including：
Water film dust removal device 1 for pending gas to be carried out to water film dedusting processing, the water film dust removal device enter
Mouth is equipped with for that will handle the first atomising device 2 for introducing flocculation liquid in flue gas；
Lye spray equipment 3 for water film dedusting processing gained gas to be carried out to lye spray process, the lye spray
The entrance of shower device is equipped with the second atomising device 4 for introducing oxidation solution into water film dedusting processing gained gas；
Wet type electric dust-removing device 5 for gas obtained by lye spray process to be carried out to wet-esp processing is described wet
The entrance of formula electrical dust collector device is equipped with the ozone generating-device 6 for introducing ozone to gas obtained by lye spray process；
Adsorbent equipment 7 for wet-esp processing gained gas to be carried out to adsorption treatment.
In steel plant's blast furnace flue gas wet purification processing system provided by the present invention, atomising device is often referred to can be by liquid
Body is atomized and is scattered in the processing unit in gas, and first atomising device 2 can carry out mist to the liquid containing flocculant
To change, and is scattered in pending gas, the liquid containing oxidant can be atomized by second atomising device 4,
And it is scattered in water film dedusting processing gained gas.First atomising device, 2 and/or second atomising device 4 can select
One or more combinations from pressure atomizer, ultrasonic ultrasonic delay line memory ultrasonic wave, first atomising device 2 and/or
The atomization droplets diameter of two atomising devices 4 is 5~200um, and aerosol dosage is 1~100ml/ (m3*min)。
In steel plant's blast furnace flue gas wet purification processing system provided by the present invention, water film dust removal device 1 is often referred to can
With the device that the method handled by water film dedusting handles gas, pending gas can be introduced into water film dust removal device
To achieve the effect that water film dedusting is handled in 1.The liquid-gas ratio of the water film dust removal device 1 is 0.1-0.6L/m3, water film dedusting
Device 1 can be selected from one or more groups in impact water dust scrubber, inertia water dust scrubber and centrifugal water film dust remover
It closes.
In steel plant's blast furnace flue gas wet purification processing system provided by the present invention, lye spray equipment 3 is often referred to can
Lye spray is utilized the SO in alkali liquor oxidized rear flue gas in gas3、NO2The device that equal sour gas absorb, moisture film
Gas can be introduced into lye spray equipment 3 obtained by dust removal process, to achieve the effect that lye spray process.The lye
Spray equipment can be such as spray column.Lye used in lye spray equipment 3 includes NH4HCO3And/or (NH4)2CO3, a concentration of 0.1-5mol/L of lye.Liquid-gas ratio in lye spray equipment is 1.5-3L/m3, sprinkle density 50-
100m3/(m2*h)。
In steel plant's blast furnace flue gas wet purification processing system provided by the present invention, ozone generating-device 6 is often referred to can
To generate ozone gas and ozone gas can be introduced to the device of pending gas, gas obtained by lye spray process can be by
Introduce ozone.The ozone generating-device 6 can be ozone generator etc., and the ozone occurrence quantity of ozone generating-device 6 can be
100-1500mg/m3。
In steel plant's blast furnace flue gas wet purification processing system provided by the present invention, Wet type electric dust-removing device 5 is often referred to
Using high-voltage corona discharge so that dust charged, it is charged after dust be collected to realize removal gas in the effect of electric field force
The device of middle dust, lye spray process gained gas can be introduced into Wet type electric dust-removing device 5, be removed to be subjected to wet type electricity
Dirt processing.The Wet type electric dust-removing device 5 can be selected from cross-flow type Wet type electric dust-removing device and/or vertical-flow wet-esp fills
It sets.
In steel plant's blast furnace flue gas wet purification processing system provided by the present invention, adsorbent equipment 7 usually can be energy
Adsorbing medium is enough accommodated, to be adsorbed to gas using adsorbing medium, for example, using the adsorption capacity of microporous medium, from
And gas is made to reach discharge standard.Wet-esp processing gained gas can be introduced into adsorbent equipment 7, to be adsorbed
Processing.The adsorption treatment can be by master worker such as conveyer belt absorption is to tower, and the adsorbing medium in adsorbent equipment 7, which is selected from, lives
Property charcoal and/or molecular sieve.
Steel plant's blast furnace flue gas wet purification processing method and system provided by the present invention by flocculation, water film dedusting,
The processing methods such as oxidation, lye spray, ozone mixing, wet-esp, absorption, can effectively reduce in steel plant's blast furnace flue gas
The pollutants such as dust particle, oxysulfide, nitrogen oxides and carbon monoxide are a kind of reasonable, efficient post-processing approach, fit
Close industrialization large-scale application.
Embodiment 1
Atomization plant is set in blast furnace flue gas exit, the Gas Parameters of smoke outlet are air quantity 20000Nm3/ h, powder
Dirt particulate matter 1600mg/Nm3, sulfur dioxide 1000mg/Nm3, nitric oxide 400mg/Nm3, carbon monoxide 1000mg/Nm3,
Remaining predominantly N2., the sprinkling flocculation liquid aerosol into flue gas, flocculant is aluminium polychloride, a concentration of 350mg/L, and dosage is
0.1L/m3, subsequent flue gas enters impact type gallet water curtain dust collector, and tower body rises wind speed 5.5m/s, quantity of circulating water 2.4t/h.
Atomization plant is arranged in water dust scrubber exit, sprays oxidant aerosol to exiting flue gas, oxidant is potassium permanganate and time chlorine
Sour sodium is 1 in mass ratio:The total concentration of 2 mixture, oxidizing agent solution is 0.5mol/L, and dosage is 50ml/ (m3* min), cigarette
After the oxidized spraying of gas, nitric oxide therein is oxidized to nitrogen dioxide, and subsequent flue gas enters lye spray column, lye used
For (NH4)2CO3, a concentration of 0.8mol/L of lye, the liquid-gas ratio in lye spray equipment is 1.5L/m3, sprinkle density 50-
100m3/(m2* h), void tower flow velocity is 4m/s；Ozone generator is arranged in lye spray column exit, and ozone cloud is sprayed into flue gas
Mist, ozone introduction volume are 500mg/m3, subsequent flue gas enters vertical-flow wet electrical dust precipitator, and field gas velocity 0.4-1.5m/s stops
Stay time 6-12s, water consumption 0.8t/h, power 300KW/h；Wet electrical dust precipitator exiting flue gas eventually enters into adsorption tower, inhales
Adnexa is activated carbon, and absorption air speed is 3500h-1, superficial linear velocity in a column 0.5m/s, residence time 2s, and qualified discharge, finally, dust
The removal efficiency of particulate matter is up to 99%, concentration of emission 16mg//Nm3；Sulfur dioxide removal efficiency is 98%, discharge
A concentration of 20mg//Nm3；The removal efficiency of nitrogen oxides is up to 90%, concentration of emission 40mg/Nm3；Carbon monoxide dedusting is imitated
Rate is 95%, concentration of emission 50mg/Nm3, all contaminants, which are all up, marks discharge.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of steel plant's blast furnace flue gas wet purification processing method, including：
1) flocculation liquid will be introduced in pending flue gas, and carry out water film dedusting processing；
2) oxidation solution is introduced into gained gas, and carries out lye spray process；
3) ozone is introduced into gained gas, and carries out wet-esp processing；
4) gained gas is subjected to adsorption treatment.
2. steel plant's blast furnace flue gas wet purification processing method as described in claim 1, which is characterized in that further include following skill
One or more of art feature：
A1) the flocculation liquid be flocculation liquid aerosol, atomization droplets diameter be 5~200um, flocculation liquid aerosol dosage be 1~
100ml/(m3*min)；
A2) the flocculation liquid is the aqueous solution of flocculant, and the flocculant is selected from inorganic flocculating agent and/or organic flocculant；
A3) flocculant is selected from aluminum salt flocculant and/or Ferric Salt Flocculants；
A4) a concentration of 1-500mg/L of the flocculant；
A5) liquid-gas ratio of water film dedusting processing is 0.1-0.6L/m3；
A6) the one kind of the method for water film dedusting processing in the processing of impact moisture film, the processing of inertia moisture film and centrifugal water film processing
Or a variety of combination.
3. steel plant's blast furnace flue gas wet purification processing method as described in claim 1, which is characterized in that further include following skill
One or more of art feature：
B1) oxidation solution be oxidation solution aerosol, atomization droplets diameter be 5~200um, oxidation solution aerosol dosage be 1~
100ml/(m3*min)；
B2) oxidation solution is the aqueous solution of oxidant, and the oxidant is selected from potassium permanganate, potassium hyperchlorate, ammonium persulfate, again
One or more of sodium chromate and sodium hypochlorite mixture；
B3) a concentration of 0.05-2mol/L of the oxidation solution；
B4) lye used in lye spray process includes NH4HCO3And/or (NH4)2CO3, a concentration of 0.1- of lye
5mol/L
B5) liquid-gas ratio in lye spray process is 1.5-3L/m3, sprinkle density 50-100m3/(m2*h)。
4. steel plant's blast furnace flue gas wet purification processing method as described in claim 1, which is characterized in that further include following skill
One or more of art feature：
C1) introduction volume of ozone is 100-1500mg/m in gas3；
C2) the wet-esp processing is selected from the processing of cross-flow type wet-esp and/or the processing of vertical-flow wet-esp；
C3) wet electrical dust precipitator uses board-like or multilayer screen type anode, fish-bone needle to pierce line cathode, field gas velocity 0.4-
1.5m/s, residence time 6-12s, water consumption 0.2-10t/h, power 100-400KW/h.
5. steel plant's blast furnace flue gas wet purification processing method as described in claim 1, which is characterized in that further include following skill
One or more of art feature：
D1 activated carbon and/or molecular sieve) is used to carry out adsorption treatment；
D2) adsorption treatment air speed is 2000-9000h-1, superficial linear velocity in a column 0.2-0.5m/s, residence time 2-5s.
6. a kind of steel plant's blast furnace flue gas wet purification processing system, including：
Water film dust removal device (1) for pending gas to be carried out to water film dedusting processing, the entrance of the water film dust removal device
Equipped with for the first atomising device (2) for introducing flocculation liquid in flue gas will to be handled；
Lye spray equipment (3) for water film dedusting processing gained gas to be carried out to lye spray process, the lye spray
The entrance of device is equipped with the second atomising device (4) for introducing oxidation solution into water film dedusting processing gained gas；
Wet type electric dust-removing device (5) for gas obtained by lye spray process to be carried out to wet-esp processing, the wet type
The entrance of electrical dust collector device is equipped with the ozone generating-device (6) for introducing ozone to gas obtained by lye spray process；
Adsorbent equipment (7) for wet-esp processing gained gas to be carried out to adsorption treatment.
7. steel plant's blast furnace flue gas wet purification processing system as claimed in claim 6, which is characterized in that first atomization
The one or more combinations of device (2) and/or the second atomising device (4) in pressure atomizer, ultrasonic ultrasonic delay line memory；
And/or the atomization droplets diameter of first atomising device (2) and/or the second atomising device (4) is 5~200um, gas
Mist dosage is 1~100ml/ (m3*min)。
8. steel plant's blast furnace flue gas wet purification processing system as claimed in claim 6, which is characterized in that water film dust removal device
(1) liquid-gas ratio is 0.1-0.6L/m3；
And/or water film dust removal device (1) is in impact water dust scrubber, inertia water dust scrubber and centrifugal water film dust remover
One or more combinations.
9. steel plant's blast furnace flue gas wet purification processing system as claimed in claim 6, which is characterized in that lye spray equipment
(3) lye used in includes NH4HCO3And/or (NH4)2CO3, a concentration of 0.1-5mol/L of lye；
And/or the liquid-gas ratio in lye spray equipment (3) is 1.5-3L/m3, sprinkle density 50-100m3/(m2*h)。
10. steel plant's blast furnace flue gas wet purification processing system as claimed in claim 6, which is characterized in that ozone fills
The ozone occurrence quantity for setting (6) is 100-1500mg/m3；
And/or the Wet type electric dust-removing device (5) is selected from cross-flow type Wet type electric dust-removing device and/or vertical-flow wet-esp
Device；
And/or the adsorbing medium in adsorbent equipment (7) is selected from activated carbon and/or molecular sieve.
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Address after: 200336 west side of building 6, 1055 Fuhai Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Baimei Smart Technology (Shanghai) Co.,Ltd. Country or region after: China Address before: 200336 west side of building 6, 1055 Fuhai Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: BME ENVIRONMENTAL TECHNOLOGY (SHANGHAI) Co.,Ltd. Country or region before: China |