CN107694304A - A kind of incinerator smoke denitration wet desulphurization electric dust collector - Google Patents
A kind of incinerator smoke denitration wet desulphurization electric dust collector Download PDFInfo
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- CN107694304A CN107694304A CN201610668797.1A CN201610668797A CN107694304A CN 107694304 A CN107694304 A CN 107694304A CN 201610668797 A CN201610668797 A CN 201610668797A CN 107694304 A CN107694304 A CN 107694304A
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- Prior art keywords
- tower
- connection
- reaction tower
- incinerator
- air
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- 239000000428 dust Substances 0.000 title claims abstract description 21
- 239000000779 smoke Substances 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 77
- 230000003009 desulfurizing Effects 0.000 claims abstract description 65
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 49
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 47
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003818 cinder Substances 0.000 claims abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 claims description 33
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 31
- 238000006073 displacement reaction Methods 0.000 claims description 29
- 238000005273 aeration Methods 0.000 claims description 27
- 230000001105 regulatory Effects 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 16
- 241001438449 Silo Species 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 27
- 239000003546 flue gas Substances 0.000 abstract description 27
- 239000007789 gas Substances 0.000 abstract description 22
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitrogen oxide Substances O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052813 nitrogen oxide Inorganic materials 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 230000001473 noxious Effects 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 34
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 22
- 238000000034 method Methods 0.000 description 11
- 229910002089 NOx Inorganic materials 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L Sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 239000003638 reducing agent Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- GBAOBIBJACZTNA-UHFFFAOYSA-L Calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 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 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 239000007832 Na2SO4 Substances 0.000 description 3
- 235000015450 Tilia cordata Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 239000002594 sorbent Substances 0.000 description 3
- 238000004056 waste incineration Methods 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N Potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L Calcium fluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 210000000867 Larynx Anatomy 0.000 description 1
- 239000008896 Opium Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 blower fan 23 Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 229960001027 opium Drugs 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000004577 thatch Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
-
- 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
- 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
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—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
- B01D53/62—Carbon 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
- B01D53/68—Halogens or halogen compounds
- B01D53/685—Halogens or halogen compounds by treating the gases with solids
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- 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
- B01D2258/0291—Flue gases from waste incineration plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/30—Halogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/30—Halogen; Compounds thereof
- F23J2215/301—Dioxins; Furans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/50—Carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/60—Heavy metals; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/102—Intercepting solids by filters electrostatic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/30—Intercepting solids by screens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/10—Catalytic reduction devices
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- 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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/32—Direct CO2 mitigation
Abstract
A kind of incinerator smoke denitration wet desulphurization electric dust collector, including incinerator, reaction tower, electric cleaner, main air blower, desulfurizing tower, dehumidifying purifying column, chimney, it is characterised in that：The incinerator be linked in sequence reaction tower, electric cleaner, main air blower, desulfurizing tower, dehumidifying purifying column, chimney, the incinerator is connected with reaction tower air intake, reaction tower air intake bottom is connected with taper ash collection slot, taper ash collection slot connects electric cinder valve, reaction tower air intake top is connected with trunnion, the trunnion top calcium hydroxide that is linked in sequence dusts mouth, water jet, water jet top is connected with exhanst gas outlet, exhanst gas outlet connects electric cleaner, electric cleaner bottom is connected with air flume, and air flume bottom is connected with middle pressure roots blower.The present invention can remove the SO in incinerator smoke2The noxious pollutants such as gas, nitrogen oxides, make flue gas qualified discharge, avoid polluting environment.
Description
Technical field
The present invention relates to a kind of incinerator smoke denitration wet desulphurization electric dust collector, is particularly used for purification and burns
Flue gas caused by stove, belongs to environmental technology field.
Background technology
In prior art, the flue gas between 850 DEG C~1100 DEG C caused by after fully burning of house refuse, take off
Nitre technique is mainly with ammoniacal liquor (or urea liquid) for reducing agent, and using Manual material feeding, plant automation degree is not high；Then enter
Row removing SO2Gas, then carry out the filtering of dust granules, wherein SO2The removal methods of gas use dry method or semidry method work
Shortcomings be present in skill, the above method：
1st, denitrating technique is mainly this medicament device for formulating, using cold water for reducing agent with ammoniacal liquor (or urea liquid)
After being heated to design temperature by heater, Manual material feeding, dissolved, plant automation degree is not high, it is impossible to meets opium
To the continuous needs of medicament during tolerance removing nitrogen oxides, the waste of manpower and materials is caused；It is not provided with flue gas on-line monitoring dress
Put, pharmaceutical quantities add at random, can not monitor in real time, it is impossible to the denitration effect ensured, waste serious, operating cost height；
2nd, dry method or semi-dry desulphurization are to be sprayed into lime white in reactor by nozzle or rotary sprayer, form particle diameter
Less drop, makes SO2Gas is that the preparation of lime white is complicated with lime white reaction generation salt, its shortcoming, desulfuration efficiency
It is low.
The content of the invention
In view of the above-mentioned problems, providing a kind of incinerator smoke denitration wet desulphurization electric dust collector, one-level uses the present invention
Dry desulfurization is circulated, doctor solution consumption is few and utilization rate is high, and sorbent particle is under mutual rubbing action in cyclic process, no
It is disconnected to expose new surface, desulphurization reaction is constantly sufficiently carried out, desulfurization degree is up to 90%；Two level is using spray wet desulphurization work
Skill, non-blind area, desulphurization reaction is set constantly to be sufficiently carried out, desulfuration efficiency is up to more than 95%；Using selective catalytic reduction
(SCR), under catalyst action, nitrogen oxides is reduced into nitrogen by the amino in reducing agent at relatively low temperature；Should
Device has desulfuration efficiency high, and denitration efficiency is high, and investment operating cost is low, and reliability is high, and energy consumption is low, safeguards easy, floor space
It is small, the advantages that system service life is long, SO2Concentration of emission 70mg/Nm3, NOx concentration of emission 100mg/Nm3, dust emission
Concentration 5mg/Nm3, better than GB18485-2014 standards《Consumer waste incineration contamination control standard》(SO2＜ 80mg/Nm3, NOx ＜
250mg/Nm3, dust emission concentration ＜ 20mg/Nm3), dioxin, the noxious pollutant such as heavy metal in flue gas are adsorbed, makes flue gas
Qualified discharge, avoid polluting environment.
The technical scheme is that：A kind of incinerator smoke denitration wet desulphurization electric dust collector, including it is incinerator, anti-
Answer tower, electric cleaner, main air blower, desulfurizing tower, dehumidifying purifying column, chimney, it is characterised in that：The incinerator is linked in sequence reaction
Tower, electric cleaner, main air blower, desulfurizing tower, dehumidifying purifying column, chimney, the incinerator are connected with reaction tower air intake, reaction tower
Air intake bottom is connected with taper ash collection slot, and taper ash collection slot connection electric cinder valve, reaction tower air intake top is connected with larynx
Pipe, the trunnion top calcium hydroxide that is linked in sequence dust mouth, water jet, and water jet top is connected with exhanst gas outlet, exhanst gas outlet
Electric cleaner is connected, electric cleaner bottom is connected with air flume, and air flume bottom is connected with middle pressure roots blower, and air is oblique
Groove side coupled reaction tower circulating line, reaction tower circulating line connect recycle feed valve all the way, and another way connection ash silo is electronic
Valve, ash silo motor-driven valve connection ash silo, ash silo bottom connection electric cinder valve, the reaction tower calcium hydroxide mouth that dusts pass through calcium hydroxide
Playpipe connects mixture generator, and mixture generator connects high pressure roots blower fan, frequency conversion rotation is connected above mixture generator all the way
Turn batcher, frequency conversion rotary feeder connection electron helical claims, and electron helical claims to connect discharger, discharger connection calcium hydroxide
Dry powder feed bin, reaction tower water jet by pipeline connect water pump, water pump connection water tank, the main air blower import all the way with electric precipitation
Device is connected, and the main air blower outlet is connected with desulfurizing tower air intake, and desulfurizing tower air intake lower sides are provided with PH detection controls
Instrument, PH detect controller by controlling cable to be connected with desulfurization pump, and desulfurizing tower air intake bottom connects aeration displacement by pipeline
Reaction tank, aeration displacement reaction tank connection sedimentation basin, aeration displacement reaction tank side are provided with roots blower, and opposite side is provided with
Calcium hydroxide feed bin, calcium hydroxide feed bin connection discharger, discharger connection electron helical claim, and electron helical claims to connect frequency conversion rotation
Turn batcher, frequency conversion rotary feeder connection aeration displacement reaction tank, it is anti-that aeration displacement reaction tank pool side is provided with aeration displacement
Pond PH is answered to detect controller, aeration displacement reaction tank PH detects controller by controlling cable to be connected with frequency conversion rotary feeder,
Sedimentation basin connects regulating reservoir, and sedimentation basin bottom is provided with the outer discharge pipe of waste liquid, and regulating reservoir opposite side is provided with sodium hydroxide storage tank,
Regulating reservoir pool side is provided with regulating reservoir PH detection controllers, and regulating reservoir PH detects controller by controlling cable and electric charging valve
Connection, desulfurizing tower air intake top are provided with nozzle, and nozzle top is provided with demister, and demister top is provided with flue gas and gone out
Mouthful, exhanst gas outlet connects dehumidifying purifying column, and damp proof air cleaner, dehumidifying purification tower bottom setting are provided with the purifying column that dehumidifies
Have the outer discharge pipe of dehumidifying purifying column waste liquid, nozzle is connected through desulfurization inner wall of tower with the hose adapter of desulfurizing tower outer wall, hose adapter and
Shower is connected, and shower is fixed on desulfurizing tower outer wall by support, and shower is connected with feed tube, feed tube and desulfurization pump
Connection, desulfurization pump connection regulating reservoir, the heat exchange of heat pipe connect steam drum, and steam drum connects steam accumulation of heat by pipeline
Device, the SCR reactors centre are provided with catalyst layer, and SCR reactors top is connected with ammonia/air mixer, ammonia/air
Blender is connected with dilution ammonia blower fan all the way, and another way connects with the outlet of ammonia dashpot, the import of ammonia dashpot and ammonia
Change device connection.
The beneficial effects of the invention are as follows：A kind of incinerator smoke denitration wet desulphurization electric dust collector of present invention offer, one
Level is using circulation dry desulfurization, and doctor solution consumption is few and utilization rate is high, and sorbent particle is made in phase mutual friction in cyclic process
Under, new surface is constantly exposed, desulphurization reaction is constantly sufficiently carried out, desulfurization degree is up to 90%；Two level is wet using spraying
Method sulfur removal technology, non-blind area, makes desulphurization reaction constantly be sufficiently carried out, and desulfuration efficiency is up to more than 95%；Urged using selectivity
Change reducing process (SCR), under catalyst action, nitrogen oxides is reduced into by the amino in reducing agent at relatively low temperature
Nitrogen；The device has desulfuration efficiency high, and denitration efficiency is high, and investment operating cost is low, and reliability is high, and energy consumption is low, and maintenance is easy, accounts for
The advantages that ground area is small, and system service life is long, SO2Concentration of emission 70mg/Nm3, NOx concentration of emission 100mg/Nm3, powder
Dirt concentration of emission 5mg/Nm3, better than GB18485-2014 standards《Consumer waste incineration contamination control standard》(SO2＜ 80mg/
Nm3, NOx ＜ 250mg/Nm3, dust emission concentration ＜ 20mg/Nm3), adsorb dioxin, the harmful pollution such as heavy metal in flue gas
Thing, make flue gas qualified discharge, avoid polluting environment.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is A-A profiles in Fig. 1.
Fig. 3 is B-B profiles in Fig. 1.
Fig. 4 is C portion enlarged drawing in Fig. 1.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4,1. incinerators, 2. chimneys, 3. reaction tower air intakes, 4. taper ash collection slots, 5. is electronic
Unloading valve, 6. trunnions, 7. calcium hydroxides dust mouth, 8. ammonia gasifiers, 9. exhanst gas outlets, 10. recycle feed valves, 11. reaction towers
Circulating line, 12. ash silo motor-driven valves, 13. ash silos, 14. electric cinder valves, 15. electric cleaners, 16. air flumes, press in 17.
Roots blower, 18. calcium hydroxide playpipes, 19. calcium hydroxide dry powder feed bins, 20. dischargers, 21. electron helicals claim, and 22. become
Frequency rotary feeder, 23. high pressure roots blower fans, 24. mixture generators, 25. main air blowers, 26. ammonias/air mixer, 27. ammonia
Gas dashpot, 28. desulfurizing tower air intakes, 29. desulfurizing towers, 30. demisters, 31. exhanst gas outlets, 32. showers, 33. supports,
34. hose adapter, 35. nozzles, 36. feed tubes, 37. damp proof air cleaners, 38. dehumidifying purifying columns, 39. reaction towers, 40. hydrogen-oxygens
Change calcium feed bin, 41. dischargers, 42. electron helicals claim, 43. frequency conversion rotary feeders, 44. aeration displacement reaction tanks, 45. aerations
Reaction tank PH detection controllers are replaced, 46. roots blowers, 47.PH detection controllers, 48. desulfurization pumps, 49. sedimentation basins, 50. is useless
The outer discharge pipe of liquid, the 51. outer discharge pipes of dehumidifying purifying column waste liquid, 52. sodium hydroxide storage tanks, 53. electric charging valves, 54. regulating reservoirs
PH detection controllers, 55. regulating reservoirs, 56. water tanks, 57. water pumps, 58. water jets, 59. steam drums, 60. steam accumulators,
61. catalyst layer, 62.SCR reactors, 63. dilution ammonia blower fans, 64. heat exchange of heat pipes.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the present invention is a kind of incinerator smoke denitration wet desulphurization electric dust collector, bag
Incinerator 1, reaction tower 39, electric cleaner 15, main air blower 25, desulfurizing tower 29, dehumidifying purifying column 38, chimney 2 are included, its feature exists
In：The incinerator 1 be linked in sequence reaction tower 39, electric cleaner 15, main air blower 25, desulfurizing tower 29, dehumidifying purifying column 38, chimney
2, the incinerator 1 is connected with reaction tower air intake 3, and the bottom of reaction tower air intake 3 is connected with taper ash collection slot 4, taper collection ash
Groove 4 connects electric cinder valve 5, and the top of reaction tower air intake 3 is connected with trunnion 6, and the top of trunnion 6 is linked in sequence and has calcium hydroxide spray
Powder mouth 7, water jet 58, the top of water jet 58 are connected with exhanst gas outlet 9, and exhanst gas outlet 9 connects electric cleaner 15, electric cleaner 15
Bottom is connected with air flume 16, and the bottom of air flume 16 is connected with middle pressure roots blower 17, and the connection of the side of air flume 16 is anti-
Answer tower circulating line 11, the tunnel of reaction tower circulating line 11 1 connection recycle feed valve 10, another way connection ash silo motor-driven valve 12, ash
Storehouse motor-driven valve 12 connects ash silo 13, the bottom of ash silo 13 connection electric cinder valve 14, and the reaction tower calcium hydroxide mouth 7 that dusts passes through hydrogen-oxygen
Change calcium playpipe 18 and connect mixture generator 24, the tunnel of mixture generator 24 1 connection high pressure roots blower fan 23, mixture generator 24
Top connection frequency conversion rotary feeder 22, frequency conversion rotary feeder 22 connects electron helical and claims 21, and electron helical claims 21 connections to unload
Glassware 20, discharger 20 connect calcium hydroxide dry powder feed bin 19, and reaction tower water jet 58 connects water pump 57, water pump 57 by pipeline
Water tank 56 is connected, the import of main air blower 25 is connected with electric cleaner 15 all the way, and the outlet of main air blower 25 enters gas with desulfurizing tower
Mouth 28 connects, and the lower sides of desulfurizing tower air intake 28 are provided with PH detection controllers 47, and it is electric that PH detection controllers 47 pass through control
Cable is connected with desulfurization pump 48, and the bottom of desulfurizing tower air intake 28 connects aeration displacement reaction tank 44, aeration displacement reaction by pipeline
Pond 44 connects sedimentation basin 49, and aeration displacement reaction tank 44 side is provided with roots blower 46, and opposite side is provided with calcium hydroxide material
Storehouse 40, calcium hydroxide feed bin 40 connect discharger 41, and discharger 41 connects electron helical and claims 42, and electron helical claims 42 connection frequency conversions
Rotary feeder 43, the connection aeration displacement reaction tank 44 of frequency conversion rotary feeder 43, the aeration displacement pool side of reaction tank 44 are provided with
Aeration displacement reaction tank PH detection controllers 45, aeration displacement reaction tank PH detection controllers 45 are by controlling cable to be revolved with frequency conversion
Turn batcher 43 to connect, sedimentation basin 49 connects regulating reservoir 55, and the bottom of sedimentation basin 49 is provided with the outer discharge pipe 50 of waste liquid, regulating reservoir 55
Opposite side is provided with sodium hydroxide storage tank 52, and the pool side of regulating reservoir 55 is provided with regulating reservoir PH detection controllers 54, regulating reservoir PH inspections
Controller 54 is surveyed by controlling cable to be connected with electric charging valve 53, the top of desulfurizing tower air intake 28 is provided with nozzle 35, nozzle
35 tops are provided with demister 30, and the top of demister 30 is provided with exhanst gas outlet 31, and exhanst gas outlet 31 connects dehumidifying purifying column 38,
Damp proof air cleaner 37 is provided with dehumidifying purifying column 38, dehumidifying purifying column 38 bottom is provided with outside dehumidifying purifying column waste liquid and arranged
Pipeline 51, nozzle 35 are connected through the inwall of desulfurizing tower 29 with the hose adapter 34 of the outer wall of desulfurizing tower 29, hose adapter 34 and shower 32
Connection, shower 32 is fixed on the outer wall of desulfurizing tower 29 by support 33, and shower 32 is connected with feed tube 36, feed tube 36 and
Desulfurization pump 48 connects, and desulfurization pump 48 connects regulating reservoir 55, and the heat exchange of heat pipe 64 connects steam drum 59, and steam drum 59 is logical
Piping connects steam accumulator 60, and catalyst layer 61, the top of SCR reactors 62 and ammonia are provided among the SCR reactors 62
Gas/air mixer 26 is connected, and the tunnel of ammonia/air mixer 26 1 is connected with dilution ammonia blower fan 63, and another way is delayed with ammonia
The outlet of jet-bedding 27 connection, the import of ammonia dashpot 27 are connected with ammonia gasifier 8.
The course of work of the present invention：500t/d domestic waste incinerations 1, exhaust gas volumn 14~15 × 104m3/ h, the stove of incinerator 1
Temperature in thorax is 850 DEG C~1100 DEG C, SO2300~800mg/Nm of concentration3, HCL 800~1200mg/Nm of concentration3, NOx
400~500mg/Nm of concentration3, 20~30g/Nm of dust concentration3, the oxygen content 8%~12% of flue gas, the water capacity of flue gas
15%~25%；
Flue gas enters reaction tower 39 by the suction function of main air blower 25, and flue gas obtains after entering reaction tower 39 at trunnion 6
To acceleration, high velocity air forms strong turbulent flow in reaction tower 39, produces efficiently sufficiently gas-solid contact；At desulfurization
The flue gas containing high concentrate dust of reason is after the top exhanst gas outlet 9 of reaction tower 39 comes out, into the electric cleaner 15 at rear portion
Dust separation is carried out, the flue gas outflow electric cleaner 15 by purification, into desulfurizing tower 29, then through damp proof in the purifying column 38 that dehumidifies
Air cleaner 37, the fine solid particle in gas is collected, purify air, further remove water droplet, the cigarette come out from desulfurizing tower 29
Gas, temperature is at 50~60 DEG C, into heat exchange of heat pipe 64, heat of the smoke absorption from steam accumulator 59, flue-gas temperature liter
Height meets requirement of the denitrating technique to flue-gas temperature, the flue gas through heating is taken off into SCR reactors 62 to 180~190 DEG C
Nitre processing, is finally discharged into air by chimney 2；
Claim 21, frequency conversion rotary feeder 22, high pressure roots by calcium hydroxide dry powder feed bin 19, discharger 20, electron helical
The calcium hydroxide injection apparatus of the compositions such as blower fan 23, mixture generator 24, calcium hydroxide playpipe 18；According to the cigarette of incinerator 1
Tolerance and the amount for generating sulfide, calculate Ca (OH)2Consumption, after electron helical claims 21 Weighings, revolved by frequency conversion
Turn batcher 22, according to operating mode, adjust powder delivering amount with the mode for changing rotating speed, powder delivering amount is sent into blender 24, from high pressure sieve
The wind-force of thatch blower fan 23, the powder for falling into blender 24 is sent into the calcium hydroxide mouth 7 that dusts by calcium hydroxide playpipe 18 and entered
Enter in reaction tower 39, in reaction tower 39, the calcium hydroxide particle in flue gas is spread under mutual rubbing action, constantly hydrogen
(Asia) calcium sulfate of calcium oxide particle Surface Creation removes, and the calcium hydroxide inside particle is constantly exposed new surface, makes to take off
Reaction of Salmon-Saxl is constantly sufficiently carried out down, the SO in flue gas2Removal efficiency can reach 90%, due to SO3, the acid such as HF, HCL
Property gas compares SO2It is more easy to react with calcium hydroxide, SO in reaction tower 393, HF, HCL removal efficiency can reach 98% with
On；Reacted calcium hydroxide is carried out by air flume 16, reaction tower circulating line 11 and reaction tower 39 in reaction tower 39
Calcium hydroxide iterative cycles, its internal circulating load are controlled by recycle feed valve 10, and the bottom of air flume 16 is provided with middle pressure roots blower
17, the calcium hydroxide in air flume 16 is in suspended state all the time, it is ensured that the elimination reaction occurred, when desulfurization operation one
After the section time, ash silo motor-driven valve 12 is opened, the dust in desulfurization product, flue gas is entered into ash silo 13, passes through electric cinder valve 14
The circulatory system is discharged, calcium hydroxide induction system is by calcium hydroxide iterative cycles and smoke contacts, and circulating ratio is up to 100~150
Times, calcium hydroxide utilization rate is high；
A series of chemical change occurs in above-mentioned technical process：
Ca(OH)2+SO2+1/2H2O→CaSO3·1/2H2O+H2O
Ca(OH)2+SO3+H2O→CaSO4·2H2O
Ca(OH)2+2HCL→CaCL2·2H2O
Ca(OH)2+2HF→CaF2·2H2O
CaSO3·1/2H2O+1/2O2+2/3H2O→CaSO4·2H2O
Ca(OH)2+CO2→CaCO3+H2O
The drying of mixture is relatively uniform in reaction tower 39, and circulation calcium hydroxide has fabulous mobility, can ensure that anti-
Answer the stabilization of operating mode in tower 39；Become thicker particle because of conglomeration in sweetening process under gravity to fall in reaction tower cone
In shape ash collection slot 4, reacted tower bottom electric cinder valve 5 is discharged；
Using NaOH as desulfurization absorbent, desulfurizing agent is squeezed into desulfurizing tower 29 through desulfurization pump 48 and fully contacted with flue gas,
The sulfur dioxide in flue gas is set to carry out reaction generation Na with desulfurizing agent NaOH2SO3, from the Na of the discharge of desulfurizing tower 292SO3Solution passes through
Aerating oxidation is crossed, generates Na2SO4, by adding the precipitation of regeneration and solid by-product of the calcium hydroxide to absorbing liquid, through overexposure
Gas and sodium, the mixed liquor of calcium displacement flow into sedimentation basin 49, the supernatant after precipitating Ash Water Separator, are sent into regulating reservoir 55, are adjusting
Save in pond 55, when pH value reduces to a certain extent, the pH value in the measure regulating reservoir 55 of controller 54 is detected by regulating reservoir PH
Afterwards, control electric charging valve 53 that the sodium hydroxide in sodium hydroxide storage tank 52 is continuously replenished to add in regulating reservoir 55, in desulfurization
In tower 29, when pH value reduces to a certain extent, after the pH value that controller 47 is determined in desulfurizing tower 29 is detected by PH, pass through control
Desulfurization pump 48 processed adds desulfurizing agent into desulfurizing tower 29, so circulation, and the heavy ash in sedimentation basin 49 is periodically removed, and picks up outward transport；
42, frequency conversion rotary feeder 43 is claimed to form calcium hydroxide by calcium hydroxide feed bin 40, discharger 41, electron helical
Conveying device, in aeration displacement reaction tank 44, when pH value reduces to a certain extent, by being aerated the PH detections of displacement reaction tank
After pH value in the measure aeration displacement reaction tank 44 of controller 45, after electron helical claims 42 Weighings, rotated by frequency conversion
Batcher 43, the pH value in reaction tank 44 is replaced according to aeration, the conveying capacity of calcium hydroxide, hydrogen are adjusted with the mode for changing rotating speed
Calcium oxide is sent into aeration displacement reaction tank 44；
Desulfurization chemical reaction formula：
SO is absorbed in absorption tower2：
2NaOH+SO2→Na2SO3+H2O
Na2SO3+SO2+H2O→2NaHSO3
SO will be absorbed2Absorbing liquid deliver to aeration displacement reaction tank 44, carry out the oxidation of inferior sulfate radical, absorbing liquid again
Raw and solid by-product precipitation；
Air is blasted by roots blower 46, oxidation reaction occurs in aeration replaces reaction tank 44；
Oxidation reaction：Na2SO3+0.5O2→Na2SO4
By the precipitation for adding regeneration and solid by-product of the calcium hydroxide to absorbing liquid；
Displacement reaction：Ca(OH)2+Na2SO4+2H2O→NaOH+CaSO4·2H2O
Ca(OH)2+Na2SO3→2NaOH+CaSO3
Ca(OH)2+2NaHSO3→Na2SO3+CaSO3·0.5H2O+0.5H2O
The NaOH and Na of regeneration2SO3It can be recycled Deng desulfurizing agent；
As can be seen here, NaOH consumption here is fewer, and what is actually mainly consumed after the circulation of system absorbing liquid is hydrogen-oxygen
Change calcium, therefore operating cost is relatively low；
Denitrification process：Liquefied ammonia is transported to liquid ammonia storage tank by tank car, and the liquefied ammonia of output becomes ammonia after ammonia gasifier 8, will
It is standby that it delivers to ammonia dashpot 27；Ammonia in ammonia dashpot 27 is sent into ammonia/air mixer 26 after decompression, with
After air mixing from dilution ammonia blower fan 63, the nozzle by spraying ammonia barrier is sprayed into flue gas and is sufficiently mixed therewith, after
And enter SCR reactors 62, when flue gas flows through the catalyst layer 61 of SCR reactors 62, catalytic reaction occurs, NOx is chosen
The reduction of property：
4NH3+4NO+O2→4N2+6H2O
8NH3+6NO2→7N2+12H2O
NOx is reduced to N in reactor2And water.
As can be seen here, one-level of the present invention is using circulation dry desulfurization, and doctor solution consumption is few and utilization rate is high, cyclic process
Middle sorbent particle constantly exposes new surface, desulphurization reaction is constantly sufficiently carried out under mutual rubbing action, desulfurization degree
Up to 90%；Two level non-blind area, makes desulphurization reaction constantly be sufficiently carried out, desulfuration efficiency is high using spray wet desulfurizing process
Up to more than 95%；Using selective catalytic reduction (SCR), under catalyst action, the amino in reducing agent is relatively low
At a temperature of nitrogen oxides is reduced into nitrogen；The device has desulfuration efficiency high, and denitration efficiency is high, and investment operating cost is low,
The advantages that reliability is high, and energy consumption is low, safeguards easily, and floor space is small, and system service life is long, SO2Concentration of emission 70mg/Nm3,
NOx concentration of emission 100mg/Nm3, dust emission concentration 5mg/Nm3, better than GB18485-2014 standards《Consumer waste incineration is dirty
Contaminate control standard》(SO2＜ 80mg/Nm3, NOx ＜ 250mg/Nm3, dust emission concentration ＜ 20mg/Nm3), adsorb in flue gas
The noxious pollutants such as dioxin, heavy metal, make flue gas qualified discharge, avoid polluting environment.
Claims (1)
1. a kind of incinerator smoke denitration wet desulphurization electric dust collector, including incinerator, reaction tower, electric cleaner, main air blower,
Desulfurizing tower, dehumidifying purifying column, chimney, it is characterised in that：The incinerator is linked in sequence reaction tower, electric cleaner, main air blower, de-
Sulphur tower, dehumidifying purifying column, chimney, the incinerator are connected with reaction tower air intake, and reaction tower air intake bottom is connected with taper
Ash collection slot, taper ash collection slot connection electric cinder valve, reaction tower air intake top are connected with trunnion, and trunnion top is linked in sequence and had
Calcium hydroxide dusts mouth, water jet, and water jet top is connected with exhanst gas outlet, exhanst gas outlet connection electric cleaner, electric cleaner
Bottom is connected with air flume, and air flume bottom is connected with middle pressure roots blower, the circulation of air flume side coupled reaction tower
Pipeline, reaction tower circulating line connect recycle feed valve, another way connection ash silo motor-driven valve, ash silo motor-driven valve connection ash all the way
Storehouse, ash silo bottom connection electric cinder valve, the reaction tower calcium hydroxide mouth that dusts connect mixing by calcium hydroxide playpipe
Device, mixture generator connect high pressure roots blower fan all the way, connection frequency conversion rotary feeder above mixture generator, frequency conversion rotate to
Material machine connection electron helical claims, and electron helical claims to connect discharger, discharger connection calcium hydroxide dry powder feed bin, reaction tower water spray
Mouth connects water pump, water pump connection water tank by pipeline, and the main air blower import is connected with electric cleaner all the way, and the main air blower goes out
Mouth is connected with desulfurizing tower air intake, and desulfurizing tower air intake lower sides are provided with PH detection controllers, and PH detection controllers pass through
Control cable is connected with desulfurization pump, and desulfurizing tower air intake bottom connects aeration displacement reaction tank, aeration displacement reaction by pipeline
Pond connects sedimentation basin, and aeration displacement reaction tank side is provided with roots blower, and opposite side is provided with calcium hydroxide feed bin, hydroxide
Calcium feed bin connect discharger, discharger connection electron helical claim, electron helical claim connect frequency conversion rotary feeder, frequency conversion rotate to
Material machine connection aeration displacement reaction tank, aeration displacement reaction tank pool side are provided with aeration displacement reaction tank PH detection controllers, exposed
Gas displacement reaction tank PH detects controller by controlling cable to be connected with frequency conversion rotary feeder, sedimentation basin connection regulating reservoir, sinks
Shallow lake pond bottom is provided with the outer discharge pipe of waste liquid, and regulating reservoir opposite side is provided with sodium hydroxide storage tank, and regulating reservoir pool side is provided with tune
Pond PH detection controllers are saved, regulating reservoir PH detects controller by controlling cable to be connected with electric charging valve, desulfurizing tower air intake
Top is provided with nozzle, and nozzle top is provided with demister, and demister top is provided with exhanst gas outlet, exhanst gas outlet connection dehumidifying
Purifying column, damp proof air cleaner is provided with the purifying column that dehumidifies, dehumidifying purification tower bottom is provided with outside dehumidifying purifying column waste liquid
Discharge pipe, nozzle are connected through desulfurization inner wall of tower with the hose adapter of desulfurizing tower outer wall, and hose adapter is connected with shower, and shower leads to
Cross support to be fixed on desulfurizing tower outer wall, shower is connected with feed tube, and feed tube is connected with desulfurization pump, the connection regulation of desulfurization pump
Pond, the heat exchange of heat pipe connect steam drum, and steam drum connects steam accumulator by pipeline, in the SCR reactors
Between be provided with catalyst layer, SCR reactors top is connected with ammonia/air mixer, ammonia/air mixer all the way with diluted ammonia
Gas blower fan is connected, and another way is connected with the outlet of ammonia dashpot, and the import of ammonia dashpot is connected with ammonia gasifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668797.1A CN107694304A (en) | 2016-08-08 | 2016-08-08 | A kind of incinerator smoke denitration wet desulphurization electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668797.1A CN107694304A (en) | 2016-08-08 | 2016-08-08 | A kind of incinerator smoke denitration wet desulphurization electric dust collector |
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| Publication Number | Publication Date |
|---|---|
| CN107694304A true CN107694304A (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610668797.1A Pending CN107694304A (en) | 2016-08-08 | 2016-08-08 | A kind of incinerator smoke denitration wet desulphurization electric dust collector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450674A (en) * | 2020-04-23 | 2020-07-28 | 自贡市东方联合机械配套有限公司 | Tail gas reoxidation device for removing acidic oxide smoke exhaust pipeline |
| CN114459044A (en) * | 2022-04-14 | 2022-05-10 | 天津乐科节能科技有限公司 | System and method for deeply recycling flue gas waste heat based on flue gas pressurization |
-
2016
- 2016-08-08 CN CN201610668797.1A patent/CN107694304A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450674A (en) * | 2020-04-23 | 2020-07-28 | 自贡市东方联合机械配套有限公司 | Tail gas reoxidation device for removing acidic oxide smoke exhaust pipeline |
| CN114459044A (en) * | 2022-04-14 | 2022-05-10 | 天津乐科节能科技有限公司 | System and method for deeply recycling flue gas waste heat based on flue gas pressurization |
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Application publication date: 20180216 |