CN108373936A - A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter - Google Patents
A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter Download PDFInfo
- Publication number
- CN108373936A CN108373936A CN201810409096.5A CN201810409096A CN108373936A CN 108373936 A CN108373936 A CN 108373936A CN 201810409096 A CN201810409096 A CN 201810409096A CN 108373936 A CN108373936 A CN 108373936A
- Authority
- CN
- China
- Prior art keywords
- ash
- flue gas
- absorbent
- fluidized bed
- gasification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 70
- 238000002309 gasification Methods 0.000 title claims abstract description 67
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000746 purification Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 17
- 239000003245 coal Substances 0.000 title claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000002250 absorbent Substances 0.000 claims abstract description 71
- 230000002745 absorbent Effects 0.000 claims abstract description 71
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 52
- 239000002028 Biomass Substances 0.000 claims abstract description 51
- 239000000292 calcium oxide Substances 0.000 claims abstract description 48
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 48
- 239000012716 precipitator Substances 0.000 claims abstract description 35
- 238000004380 ashing Methods 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 30
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 25
- 231100000719 pollutant Toxicity 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 20
- 239000002918 waste heat Substances 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002956 ash Substances 0.000 claims description 75
- 239000007789 gas Substances 0.000 claims description 36
- 239000000428 dust Substances 0.000 claims description 25
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 239000010881 fly ash Substances 0.000 claims description 18
- 230000023556 desulfurization Effects 0.000 claims description 17
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 17
- 229910052753 mercury Inorganic materials 0.000 claims description 17
- 238000003786 synthesis reaction Methods 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 230000029087 digestion Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000012717 electrostatic precipitator Substances 0.000 claims description 4
- 230000003134 recirculating effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 239000011214 refractory ceramic Substances 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 239000011593 sulfur Substances 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 235000013339 cereals Nutrition 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000003500 flue dust Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 229910001413 alkali metal ion Inorganic materials 0.000 description 5
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 5
- 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 4
- 230000008901 benefit Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 230000003009 desulfurizing effect Effects 0.000 description 4
- -1 dirt Chemical compound 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000006909 Tilia x europaea Species 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
- B01D53/10—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents
- B01D53/12—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents according to the "fluidised technique"
-
- 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
- B01D53/40—Acidic 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
- B01D53/48—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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/86—Other features combined with waste-heat boilers
-
- 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
-
- 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
-
- 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
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/027—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 cyclone separators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
-
- 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
-
- 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
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
-
- 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
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
-
- 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
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1606—Combustion processes
-
- 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
- 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
- F23J2215/60—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
- F23J2217/101—Baghouse type
-
- 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
-
- 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
- F23J2217/40—Intercepting solids by cyclones
-
- 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
- F23J2219/60—Sorption with dry devices, e.g. beds
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The present invention provides a kind of flue gas purification systems of coal-fired coupled biological matter gasification, including：Sequentially connected biomass gasifying furnace, hot precipitator, waste-heat recovery device, boiler, denitrification apparatus, preposition deduster, circulating fluidized bed dry desulfuration absorbing tower, postposition deduster, air-introduced machine, chimney；Gasify ash cellar, and the feed inlet of the gasification ash cellar is connect with the ash discharging hole of the hot precipitator；Pre-mixing apparatus, the first charging aperture of the pre-mixing apparatus are connected with gasification ash cellar outlet, and second charging aperture is connect with quick lime storehouse；Digester, the ash inlet of the digester and the ash hole of pre-mixing apparatus connect；The ash inlet in absorbent storehouse, the absorbent storehouse is connect with the ash hole of the digester, and ash hole is connect with the ash inlet of circulating fluidized bed dry desulfuration absorbing tower.The present invention has higher adsorption efficiency as the absorbent of circulating fluidized bed dry sulfur removal technology with quick lime mixture slaking using biogas ashing to multiple pollutants such as tar, bioxin.
Description
Technical field
The present invention relates to coal-fired coupled biological matter technical field more particularly to a kind of flue gases of coal-fired coupled biological matter gasification
Purification system and method.
Background technology
2016, China signed together with other countries《Paris climate change agreement》, China's promise to the year two thousand twenty, I
State's per GDP carbon dioxide declined 60%-65% than 2005, and the non-fossil energy accounts for primary energy consumption ratio and weighs to 20%
Left and right.China starts quickly to step into the low-carbon energy epoch.
Biomass has neutral carbon attribute, and China's carbon intensity can be greatly reduced using biomass as energy carrier.Mesh
Preceding biomass mainly uses the Land use systems of direct combustion, i.e., boiler combustion power generation will be sent into after biomass collection, but biomass direct-fired
Power plant is there are cost of investment height, the problems such as fuel cost is high, system complex, operation and maintenance cost is big, especially contains in biomass
It measures higher alkali metal and easily causes boiler heating surface deposition and etching problem, cause boiler thermal efficiency to reduce, maintenance cost is high.
Biomass carbonization degree is low, and volatile matter content is high, and the advanced promoting the circulation of qiization of biomass is formed synthesis gas, then by synthesis gas
With coal-fired multifuel combustion in feeding boiler, it can not only make full use of content in the active ingredient in biomass, but also avoidable biomass higher
Alkali metal cause boiler heating surface deposition and corrosion, improve boiler efficiency, simple system is with a wide range of applications.
Pollutant kind is complicated in the coal-fired flue gas generated with biomass synthesis gas burning, not only there is SO2、SO3, NOx, powder
Common pollutant in the coal-fired flue-gas such as dirt, Hg, HCl, HF, mercury, and generate containing gasification of biomass and combustion process residual
The noxious materials such as remaining tar light oil, bioxin need to carry out collaboration high-efficient purification processing to these multiple pollutants.At present not yet
There is the flue gas multiple pollutant purification techniques that large-scale promotion application gasifies in coal-fired coupled biological matter.
By taking biomass direct-fired power plant as an example, referring especially to coal-burning power plant, the minimum discharge of coal-burning power plant is more for gas cleaning
It is the flue gases purification route using wet limestone-gypsum FGD as core, for multi-pollutant using Wet technique route
Removing only simply by kinds of processes superposition realize, such as using SCR/SNCR removing NOx, using lime stone/stone
Cream wet desulphurization removes SO2, spray using electrostatic precipitator/electrostatic fabric filter/bag filter removing flue dust, using activated carbon
Technology removes heavy metal Hg, removes SO using wet electrical dust precipitator3, using flue gas heat-exchange unit eliminate white cigarette, using zero-emission at
Reason system handles discharge of wastewater problem, technology path system flow length, complex process, investment and the operating cost of this superposing type
Height, and tar, bioxin can not be removed.
Invention content
In view of this, to be to provide a kind of flue gas of coal-fired coupled biological matter gasification net for the technical problem to be solved in the present invention
Change system and method, NOx, SO can be removed simultaneously2, flue dust, SO3, mercury, HCl, HF, tar, the multiple pollutants such as bioxin, can use
In the gas cleaning of gasification of biomass and coal-fired coupling combustion technology.
The present invention provides a kind of flue gas purification systems of coal-fired coupled biological matter gasification, including：
Sequentially connected biomass gasifying furnace, hot precipitator, waste-heat recovery device, boiler, denitrification apparatus, preposition dedusting
Device, circulating fluidized bed dry desulfuration absorbing tower, postposition deduster, air-introduced machine, chimney；
Gasify ash cellar, and the feed inlet of the gasification ash cellar is connect with the ash discharging hole of the hot precipitator, for collecting height
The biogas ashing of separation is trapped in warm deduster；
Pre-mixing apparatus, the outlet of the first charging aperture of the pre-mixing apparatus and the gasification ash cellar connect, second charging aperture and
Quick lime storehouse connects, and is used for the mixing of biogas ashing and quick lime；
Digester, the ash inlet of the digester and the ash hole of pre-mixing apparatus connect, and absorbent is formed for digesting；
The ash inlet in absorbent storehouse, the absorbent storehouse is connect with the ash hole of the digester, ash hole and recycle stream
The ash inlet connection for changing bed dry desulfurization absorbing tower is absorbed for storing and absorbent being delivered to circulating fluidized bed dry desulfurization
Tower mixes with flue gas and carries out smoke absorption.
The present invention provides using circulating fluidized bed dry desulfurization as the dry technique route of core, can remove simultaneously NOx,
SO2, flue dust, SO3, mercury, HCl, HF, the multiple pollutants such as tar, bioxin, can be used for gasification of biomass and fired with coal-fired coupling
The gas cleaning of burning technology.
Preferably, it is provided with atomizing lance in the circulating fluidized bed dry desulfuration absorbing tower.
Preferably, the discharge port of the postposition deduster is connected with material-returning device, the cigarette for collecting postposition deduster
Dirt is recycled to circulating fluidized bed dry desulfuration absorbing tower.
Preferably, the absorbent is that digestion prepares formation, gasification of biomass after gasification of biomass ash is mixed with quick lime
The mass ratio of ash and quick lime is 1：(1~5).
Preferably, the hot precipitator is in cyclone dust collectors, hot electrostatic precipitator, refractory ceramics filter collector
It is a kind of.
Preferably, the preposition deduster is cyclone dust collectors, electric precipitator, electric-bag complex dust collector, bag filter
In one or more combinations.
Preferably, the postposition deduster is electric precipitator, electric-bag complex dust collector, one kind in bag filter or more
The combination of kind.
The present invention provides a kind of flue gas purifying methods of coal-fired coupled biological matter gasification, include the following steps：
A) biomass gasifies in biomass gasifying furnace, generates synthesis gas；
B) synthesis gas enters hot precipitator removal fly ash granule, enters back into waste-heat recovery device, recovery waste heat, then into
Enter boiler and fired coal combustion, generates flue gas；
C) flue gas enters denitrification apparatus progress denitration, subsequently into preposition dust-extraction unit, removing bulky grain flying dust；
D) step C) in flue gas after removing bulky grain flying dust enter circulating fluidized bed dry desulfuration absorbing tower, in flue gas
Pollutant is removed by the absorbent in circulating fluidized bed dry desulfuration absorbing tower；The pollutant include at least sour gas, mercury,
It is one or more in tar He bioxin；
E) flue gas that circulating fluidized bed dry desulfuration absorbing tower comes out enters postposition deduster, and removing is dry in recirculating fluidized bed
The particulate matter formed in method desulfuration absorbing tower, the flue gas after being purified；
F) step B) in the fly ash granule that removes mixed in pre-mixing apparatus with quick lime, subsequently into being digested in digester
Absorbent is formed, is stored in absorbent storehouse, enters back into and is used as absorbent in circulating fluidized bed dry desulfuration absorbing tower.
Compared with prior art, the present invention is using biogas ashing and quick lime mixture slaking, as recirculating fluidized bed
The absorbent of dry desulfurizing process makes full use of the alkali and alkaline earth metal ions of high-content, high-ratio surface in biogas ashing
Product and high-carbon content, digest after biogas ashing is sufficiently mixed with quick lime, the specific surface area of absorbent greatly improved
And adsorption activity, 90%~99% mercury removal rate and 99% tar light oil removal efficiency are obtained, mercury emissions is realized and is less than 3
μg/Nm3, dioxin emission ＜ 0.1ng-TEQ/Nm3, not only realize the recycling on the spot of biogas ashing, Er Qie
Flue gas SO is realized under the premise of desulfurization Ca/S is greatly reduced2Minimum discharge, improve mercury He the adsorption efficiency of bioxin, subtracts
The absorbent consumption and cost of few dry desulfurization realize fire coal and are efficiently cooperateed with the multi-pollutant of gasification of biomass coupled system
Purification has significant economic benefit and environmental benefit, further promotes the coal-fired industry with gasification of biomass coupling technique
Change application.
Description of the drawings
Fig. 1 is the flue gas purification system structural schematic diagram of coal-fired coupled biological matter gasification provided by the invention.
Specific implementation mode
The present invention provides a kind of flue gas purification systems of coal-fired coupled biological matter gasification, including：
Sequentially connected biomass gasifying furnace, hot precipitator, waste-heat recovery device, boiler, denitrification apparatus, preposition dedusting
Device, circulating fluidized bed dry desulfuration absorbing tower, postposition deduster, air-introduced machine, chimney；
Gasify ash cellar, and the feed inlet of the gasification ash cellar is connect with the ash discharging hole of the hot precipitator, for collecting height
The biogas ashing of separation is trapped in warm deduster；
Pre-mixing apparatus, the outlet of the first charging aperture of the pre-mixing apparatus and the gasification ash cellar connect, second charging aperture and
Quick lime storehouse connects, and is used for the mixing of biogas ashing and quick lime；
The outlet of digester, the feed inlet and pre-mixing apparatus of the digester connects, and absorbent is formed for digesting；
The feed inlet in absorbent storehouse, the absorbent storehouse is connect with the outlet of the digester, discharge port with it is ciculation fluidized
The feed inlet connection of bed dry desulfurization absorbing tower is absorbed for storing and absorbent being delivered to circulating fluidized bed dry desulfurization
Tower mixes with flue gas and carries out smoke absorption.
The present invention provides a kind of flue gas purification systems being suitable for coal-fired coupled biological matter gasification, using gasification of biomass
The flying dust (referred to as " biogas ashing ") of generation and quick lime mixture slaking prepare absorbent, and biogas ashing contains height and contains
The alkali and alkaline earth metal ions of amount also contain a large amount of unformed SiO such as potassium oxide, sodium oxide molybdena and calcium oxide2It is miniature with carbon nanometer
Structure forms great specific surface area and abundant micro pore shape, and specific surface area is very big, and carbon content is higher, not only has very
Strong desulphurizing ability, and there is very strong adsorption capacity.The present invention uses biogas ashing and quick lime mixture slaking system
Standby absorbent, during mixture slaking, violent reaction, excitation life occur for the alkali and alkaline earth metal ions of high-content in gasification ash
The surface pore structure and active sites of lime.The adsorbent of preparation than common calcium hydroxide have bigger specific surface area, preferably
Active and stronger adsorption capacity can be greatly decreased while keeping high desulfurization efficiency needed for circulating fluidized bed dry desulfurization
Quick lime consumption, reduce operating cost, and help to improve the adsorbing and removing efficiency to multi-pollutant.Solves current cycle
The existing higher problem of absorbent consumption caused by absorbent is poor quality and price height of fluid bed dry desulfurization, carries simultaneously
It is high to mercury in flue gas, tar Ji the pollutants such as bioxin adsorbing and removing ability, realize and coal-fired coupled with gasification of biomass
Electricity generation system flue gas multiple pollutant efficient synergistic purification.
The flue gas purification system of fire coal coupled biological matter gasification provided by the invention includes biomass gasifying furnace, and biomass exists
Pyrolytic gasification occurs in gasification furnace and generates synthesis gas.
The biomass gasifying furnace can be biomass gasifying furnace well known to those skilled in the art, preferably fixed bed or
One kind of circle fluidized-bed gasification furnace；More preferably circle fluidized-bed gasification furnace.
The gasification of biomass heater outlet temperature is preferably 700~750 DEG C.
Further include the hot precipitator being connected with biomass gasifying furnace, for trapping the fly ash granule carried in synthesis gas.
Preferably, the hot precipitator is one kind of cyclone dust collectors, hot electrostatic precipitator, High Temperature Ceramic Filter.
The gasification of biomass ash content of the hot precipitator outlet is not more than 5g/Nm3。
Gas is after hot precipitator comes out, into waste-heat recovery device, gas recovery waste heat.
The waste-heat recovery device outlet temperature is preferably 350~400 DEG C.
The middle cryogenic gas of waste-heat recovery device outlet is sent into boiler furnace under the action of booster fan, with fire coal in height
The lower co-fire of temperature.
The present invention is to the boiler and is not particularly limited, and can be the general boiler for fired coal combustion, preferably coal dust
One kind of stove or circulating fluidized bed boiler.More preferably circulating fluidized bed boiler.
The flue gas generated after boiler combustion initially enters denitrification apparatus and carries out denitration.
The denitrification apparatus is preferably one kind of SNCR or SCR.
When boiler is coal-powder boiler, the denitrification apparatus is preferably SCR.
When boiler is circulating fluidized bed boiler, the denitrification apparatus is preferably SNCR.
The denitration outlet NOx concentration is not more than 50mg/Nm3。
Gas after denitration then removes bulky grain flying dust through preposition deduster.
The preposition deduster is preferably in cyclone dust collectors, electric precipitator, electric-bag complex dust collector, bag filter
One or more combinations.
The preposition house outlet dust concentration is not more than 5g/Nm3。
Currently preferred, the discharge port of the preposition deduster is connected with flyash library, preferably passes through flyash strength
Conveying device connects preposition deduster and flyash library.
The flue dust that the preposition deduster is collected is delivered to the storage of flyash library by flyash Pneumatic conveyer.
Gas after the removing bulky grain flying dust come out by preposition deduster, absorbs into circulating fluidized bed dry desulfurization
Tower.
There are high density, the absorbent of violent turbulence and material particles bed in circulating fluidized bed dry desulfuration absorbing tower,
It after process water is sprayed by atomizing lance in absorption tower, is attached to absorbent and material particles surface and forms liquid film, in flue gas
SO2、SO3, the sour gas such as HCl, HF, NOx occur ionic reaction removing by liquid film trapping, with absorbent, it is mercury, bioxin, a small amount of
The substances such as tar light oil are by the porous structure adsorbing and trapping of absorbent.
The circulating fluidized bed dry desulfuration absorbing tower entrance flue gas temperature is preferably 120~150 DEG C.
Exit gas temperature is preferably 10~15 DEG C of water dew point or more, in some embodiments of the invention, outlet
Flue-gas temperature is specially 70~95 DEG C.
Export SO2Concentration is preferably no greater than 35mg/Nm3。
Meanwhile the PM in flue gas2.5Coalescence occurs in absorption tower and forms bulky grain for submicron order fine grained, into postposition
After deduster, be captured removing.
The postposition deduster is preferably one or more in electric precipitator, electric-bag complex dust collector, bag filter
Combination.
The postposition house outlet dust concentration is preferably no greater than 10mg/Nm3。
Currently preferred, the discharge port of the postposition deduster is connected with material-returning device and Desulphurization library, preferably passes through
Desulphurization Pneumatic conveyer connects postposition deduster and Desulphurization library.
The flue dust major part that the postposition deduster is collected is sent circulating fluidized bed dry desulfurization back to by material-returning device and is absorbed
Tower, remaining is delivered to Desulphurization library by Desulphurization Pneumatic conveyer and stores.
Pass through the collective effect of circulating fluidized bed dry desulfuration absorbing tower and postposition deduster, various pollutants in fume quilt
Efficient removal is cooperateed with, and reaches minimum discharge standard.Chimney is discharged under air-introduced machine effect in purified flue gas.
Absorbent in above-mentioned circulating fluidized bed dry desulfuration absorbing tower is gasification of biomass ash and quick lime mixture slaking
Substance afterwards.Its preparation facilities includes gasification ash cellar, quick lime storehouse, pre-mixing apparatus, digester and absorbent storehouse.
The feed inlet of the gasification ash cellar is connect with the ash discharging hole of the hot precipitator, for collecting in hot precipitator
Trap the biogas ashing of separation.
The first charging aperture of the pre-mixing apparatus is connected with gasification ash cellar outlet, and second charging aperture connects with quick lime storehouse
It connects, is used for the mixing of biogas ashing and quick lime.
The pre-mixing apparatus is preferably one or more combinations in fluidized bed type, swinging, stirring-type.
The mass ratio of the biogas ashing and quick lime is preferably 1:(1~5).
Digester, the ash inlet of the digester and the ash hole of pre-mixing apparatus connect, and absorbent is formed for digesting.
The digester is preferably three-level Dry slaker.
The ash inlet in absorbent storehouse, the absorbent storehouse is connect with the ash hole of the digester, ash hole and recycle stream
The ash inlet connection for changing bed dry desulfurization absorbing tower is absorbed for storing and absorbent being delivered to circulating fluidized bed dry desulfurization
Tower mixes with flue gas and carries out smoke absorption.
The biogas ashing that hot precipitator traps by Pneumatic conveyer send to gasification ash cellar, quick lime by
Tank car is delivered to quick lime storehouse, after biogas ashing and quick lime are mixed by orlop baiting control device in pre-mixing apparatus
It is delivered to multi-stage dry digester, digestion generates highly active absorbent.The absorbent prepared utilizes Geldart-D particle to absorbent
Storehouse is conveyed into absorption tower finally by charging gear and realizes pollutant removing.The present invention can be by adjusting gasification ash and raw stone
The mixed proportion of discharge quantity control the gasification ash and quick lime of ash.Absorbent feed is controlled according to absorption tower entrance pollutant concentration
Amount.
In some embodiments of the invention, the flue gas purification system structure of the fire coal coupled biological matter gasification is shown
It is intended to as shown in Figure 1.
In figure, 1 biomass gasifying furnace, 2 hot precipitators, 3 waste-heat recovery devices, 4 boilers, 5 denitrification apparatus, 6 preposition remove
Dirt device, 7 circulating fluidized bed dry desulfuration absorbing towers, 8 postposition dedusters, 9 pre-mixing apparatus, 10 digesters, F1 booster fans, F2 draw
Wind turbine, S1 biogas ashing Pneumatic conveyers, S2 flyash Pneumatic conveyers, S3 absorbent Pneumatic conveyers, S4
Desulphurization Pneumatic conveyer, B11 gasification ash cellars, B12 quick limes storehouse, B2 flyash library, B3 absorbents storehouse, B4 Desulphurizations library.
The flue gas purification system of above-mentioned fire coal coupled biological matter gasification, work is coupled applied to gasification of biomass with coal-burning boiler
Skill has been sequentially arranged according to the generation of flue gas, purification and discharge flow：Biomass gasifying furnace 1, hot precipitator 2, waste heat return
Receiving apparatus 3, booster fan F1, boiler 4, denitrification apparatus 5, preposition deduster 6, circulating fluidized bed dry desulfuration absorbing tower 7, postposition
Deduster 8, air-introduced machine F2 and chimney.The absorbent of circulating fluidized bed dry desulfuration absorbing tower 7 is trapped by hot precipitator 2 and is detached
Biogas ashing and quick lime be prepared jointly, capital equipment includes gasification ash cellar B11, quick lime storehouse B12, loads in mixture in advance
It sets 9, digester 10, absorbent Pneumatic conveyer S3, absorbent storehouse B3 and some are adjusted and charging gear.
The biomass gasifying furnace 1 exports the air inlet for being connected to hot precipitator 2, the gas outlet of hot precipitator 2
It is connected to the air inlet of waste-heat recovery device 3, the gas outlet of waste-heat recovery device is connected to the air inlet side of booster fan F1, boiler
4 gas inlet connects the biomass gasified synthesis gas from booster fan F1.After synthesis gas and fire coal burn in boiler
Flue gas from the exhanst gas outlet of boiler 4 be discharged, into denitrification apparatus 5, the exhanst gas outlet of denitrification apparatus 5 is connected to preposition deduster
The ash discharging hole of 6 air inlet, preposition deduster 6 is connected with the ash inlet of flyash Pneumatic conveyer S2, flyash strength
The ash hole of conveying device S2 is connected to flyash library B2.The gas outlet of preposition deduster 6 and circulating fluidized bed dry desulfurizing tower 7
Smoke inlet be connected, the exhanst gas outlet of circulating fluidized bed dry desulfurizing tower 7 is connected to the air inlet of postposition deduster 8.Afterwards
It sets the ash discharging hole of deduster 8 while connecting circulating ash import and the Desulphurization Geldart-D particle dress of circulating fluidized bed dry desulfurizing tower 7
Set the ash inlet of S4.The ash hole of Desulphurization Pneumatic conveyer S4 is connected to Desulphurization library B4.The gas outlet of postposition deduster 8
It is sequentially connected air-introduced machine F2 and chimney, chimney is discharged in flue gas after purification.
2 ash discharging hole of hot precipitator is connected with the ash inlet of biogas ashing Pneumatic conveyer S1, biogas
The ash hole of ashing Pneumatic conveyer S1 is connected to gasification ash cellar B11.The ash inlet of quick lime storehouse B12 is connected in factory and prepares
Or the quick lime of outsourcing.The ash discharging hole of gasification ash cellar B11 and quick lime storehouse B12 is first connect with orlop baiting control device respectively,
It is connect again with the ash inlet of pre-mixing apparatus 9.The ash hole of pre-mixing apparatus 9 is connected with the ash inlet of digester 10.Absorbent gas
The ash inlet of power conveying device S3 connects the absorbent from digester 10, the ash hole of absorbent Pneumatic conveyer S3 and suction
Agent storehouse B3 is received to be connected.Finally, absorbent feeds circulating fluidized bed dry desulfuration absorbing tower 7 by the ash discharging hole of absorbent storehouse B3.
Its operation principle is：
Biomass gasifies in biomass gasifying furnace 1 under the action of gasifying agent, and gasification temperature is 700-750 DEG C.
The synthesis gas generated gasify first after 2 dedusting of hot precipitator, into waste-heat recovery device 3.Temperature is synthesized after waste heat recovery
Degree is down to 350-400 DEG C, and at this temperature, the tar in synthesis gas will not condense.Then, synthesis gas is in booster fan
F1 is acted in lower feeding boiler 4 and coal-fired co-fire.The flue gas generated burn first after denitrification apparatus 5 removes NOx, enters
Preposition deduster 6 removes most flue dust.Flue gas after dedusting passes sequentially through circulating fluidized bed dry desulfuration absorbing tower 7 with after
Set deduster 8, flue-gas temperature is reduced to 70-95 DEG C from 120-150 DEG C, SO in flue gas2, NOx, flue dust, SO3, HF, HCl, mercury, two
The multiple pollutants such as Evil English, tar light oil are by efficient cooperation-removal.Chimney is discharged under air-introduced machine F2 effects in purified flue gas.
The biogas ashing separated in hot precipitator 2 is acted in biogas ashing Pneumatic conveyer S1
Under be delivered to gasification ash cellar B11, quick lime send to quick lime storehouse B12.By under adjusting gasification ash cellar and the orlop in quick lime storehouse
Expect control device, the discharge quantity of control gasification ash and quick lime, and then controls the feed ratio of gasification ash and quick lime.Certain ratio
The gasification ash and quick lime of example uniformly mix in pre-mixing apparatus 9, are and then discharged into digester 10.By three-level dry slaking
Afterwards, the alkali and alkaline earth metal ions oxide in gasification ash and quick lime, mainly CaO, Na2O、K2O, reaction generate Ca
(OH)2、NaOH、KOH.The grey activation process of gasification excites the active sites and microcellular structure on quick lime surface simultaneously, finally digests shape
At high activity, the absorbent of high-specific surface area, high absorption capacity.The absorbent prepared is made in absorbent Pneumatic conveyer S3
It is delivered to B3 storages in absorbent storehouse under, and according to the import pollutant concentration of circulating fluidized bed dry desulfuration absorbing tower 7, adjusts
Absorbent delivery rate accurately controls the feeding coal of absorbent, realizes the efficient cooperation-removal to pollutant.
The present invention also provides a kind of flue gas purifying methods of coal-fired coupled biological matter gasification, include the following steps：
A) biomass gasifies in biomass gasifying furnace, generates synthesis gas；
B) synthesis gas enters hot precipitator removal fly ash granule, enters back into waste-heat recovery device, recovery waste heat, then into
Enter boiler and fired coal combustion, generates flue gas；
C) flue gas enters denitrification apparatus progress denitration, subsequently into preposition dust-extraction unit, removing bulky grain flying dust；
D) step C) in flue gas after removing bulky grain flying dust enter circulating fluidized bed dry desulfuration absorbing tower, in flue gas
Pollutant is removed by the absorbent in circulating fluidized bed dry desulfuration absorbing tower；The pollutant include at least sour gas, mercury,
It is one or more in tar He bioxin；
E) flue gas that circulating fluidized bed dry desulfuration absorbing tower comes out enters postposition deduster, and removing is dry in recirculating fluidized bed
The particulate matter formed in method desulfuration absorbing tower, the flue gas after being purified；
F) step B) in the fly ash granule that removes mixed in pre-mixing apparatus with quick lime, subsequently into being digested in digester
Absorbent is formed, is stored in absorbent storehouse, enters back into and is used as absorbent in circulating fluidized bed dry desulfuration absorbing tower.
The step B) in, the grain size of fly ash granule is 100 μm~1mm.
The step C) in, the grain size of bulky grain flying dust is 30 μm~100 μm.
Ca/S in the circulating fluidized bed dry desulfuration absorbing tower is 1.3~1.4.
In some embodiments of the invention, the sour gas includes SO2、SO3, it is arbitrary in HCl, HF and NOx
It is one or more.
The purified flue gas that the present invention obtains can be expelled directly out chimney under air-introduced machine effect.
The present invention is using biogas ashing and quick lime mixture slaking, the suction as circulating fluidized bed dry sulfur removal technology
Agent is received, the alkali and alkaline earth metal ions of high-content, high-specific surface area and high-carbon content in biogas ashing is made full use of, will give birth to
Gasification substance ash digests after being sufficiently mixed with quick lime, and the specific surface area and adsorption activity of absorbent greatly improved, obtain
90%~99% mercury removal rate and 99% tar light oil removal efficiency realize mercury emissions and are less than 3 μ g/Nm3, dioxin emissions
＜ 0.1ng-TEQ/Nm3, the recycling on the spot of biogas ashing is not only realized, but also desulfurization Ca/S is being greatly reduced
Under the premise of realize flue gas SO2Minimum discharge, improve mercury He the adsorption efficiency of bioxin, reduces the absorption of dry desulfurization
Agent consumption and cost realize the coal-fired multi-pollutant efficient synergistic purification with gasification of biomass coupled system, have significant
Economic benefit and environmental benefit further promote the coal-fired industrial applications with gasification of biomass coupling technique.
In order to further illustrate the present invention, with reference to embodiment to coal-fired coupled biological matter gasification provided by the invention
Flue gas purification system and method are described in detail.
Embodiment 1
The coal-fired coupled biological matter gasifying electricity generation factory of 2 220t/h scales, biomass type are rice husk, and every boiler generates
220000Nm3/ h exhaust gas volumns (dry mark), the original SO of boiler2A concentration of 1500mg/Nm3.Around existing plant area supply purity be 80%,
Specific surface area is 10m2The quick lime of/g, unit price are 400 yuan/ton.
Using the flue gas purification system of coal-fired coupled biological matter gasification of the present invention, the mixing ratio of gasification ash and quick lime
Example is 1:1.5, Ca/S 1.4, the demercuration efficiency of circulating fluidized bed dry sulfur removal technology is not less than 90%, can reach
99%, tar light oil removal efficiency 99%, 3 μ g/Nm of mercury emissions ＜3, dioxin emission ＜ 0.1ng-TEQ/Nm3。
It is computed, every unit consumes 0.38 ton of quick lime, 0.25 ton of gentle ashing per hour, runs 7000 hours per year
It calculates, the annual absorbent cost in the power plant is 212.8 ten thousand yuan.
Comparative example 1
The coal-fired coupled biological matter gasifying electricity generation factory of 2 220t/h scales, biomass type are rice husk, and every boiler generates
220000Nm3/ h exhaust gas volumns (dry mark), the original SO of boiler2A concentration of 1500mg/Nm3.Using the quick lime, meet SO2Ultralow row
It puts and multi-pollutant cooperation-removal requirement, Ca/S has reached 1.8, absorbent consumption is 0.65 ton to every unit per hour, per year
Operation calculates for 7000 hours, and the annual absorbent cost in the power plant is up to 3,640,000 yuan.
Final demercuration efficiency is 68%, tar light oil removal efficiency 90%, mercury emissions<10μg/Nm3, dioxin emissions<
0.5ng-TEQ/Nm3。
By above-described embodiment and comparative example it is found that after using purification system provided by the invention, which can save every year
Absorbent cost has higher removal efficiency up to 151.2 ten thousand yuan, and for tar, bioxin etc..
The explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (8)
1. a kind of flue gas purification system of fire coal coupled biological matter gasification, including：
Sequentially connected biomass gasifying furnace, hot precipitator, waste-heat recovery device, boiler, denitrification apparatus, preposition deduster,
Circulating fluidized bed dry desulfuration absorbing tower, postposition deduster, air-introduced machine, chimney；
Gasify ash cellar, and the feed inlet of the gasification ash cellar is connect with the ash discharging hole of the hot precipitator, is removed for collecting high temperature
The biogas ashing of separation is trapped in dirt device；
Pre-mixing apparatus, the first charging aperture of the pre-mixing apparatus are connected with gasification ash cellar outlet, second charging aperture and raw stone
Ash cellar connects, and is used for the mixing of biogas ashing and quick lime；
Digester, the ash inlet of the digester and the ash hole of pre-mixing apparatus connect, and absorbent is formed for digesting；
The ash inlet in absorbent storehouse, the absorbent storehouse is connect with the ash hole of the digester, ash hole and recirculating fluidized bed
The ash inlet of dry desulfurization absorbing tower connects, for storing and absorbent being delivered to circulating fluidized bed dry desulfuration absorbing tower,
It is mixed with flue gas and carries out smoke absorption.
2. flue gas purification system according to claim 1, which is characterized in that the circulating fluidized bed dry desulfuration absorbing tower
In be provided with atomizing lance.
3. flue gas purification system according to claim 1, which is characterized in that the discharge port of the postposition deduster is connected with
Material-returning device, fume recovery for collecting postposition deduster to circulating fluidized bed dry desulfuration absorbing tower.
4. flue gas purification system according to claim 1, which is characterized in that the absorbent is gasification of biomass ash and life
After lime mixing prepared by digestion to form, and the mass ratio of biogas ashing and quick lime is 1：(1~5).
5. flue gas purification system according to claim 1, which is characterized in that the hot precipitator be cyclone dust collectors,
One kind in hot electrostatic precipitator, refractory ceramics filter collector.
6. flue gas purification system according to claim 1, which is characterized in that the preposition deduster be cyclone dust collectors,
One or more combinations in electric precipitator, electric-bag complex dust collector, bag filter.
7. flue gas purification system according to claim 1, which is characterized in that the postposition deduster is electric precipitator, electricity
One or more combinations in bag complex dust collector, bag filter.
8. a kind of flue gas purifying method of fire coal coupled biological matter gasification, includes the following steps：
A) biomass gasifies in biomass gasifying furnace, generates synthesis gas；
B) synthesis gas enters hot precipitator removal fly ash granule, enters back into waste-heat recovery device, recovery waste heat, subsequently into pot
Stove and fired coal combustion generate flue gas；
C) flue gas enters denitrification apparatus progress denitration, subsequently into preposition dust-extraction unit, removing bulky grain flying dust；
D) step C) in removing bulky grain flying dust after flue gas enter circulating fluidized bed dry desulfuration absorbing tower, the pollution in flue gas
Object is removed by the absorbent in circulating fluidized bed dry desulfuration absorbing tower；The pollutant includes at least sour gas, mercury, tar
It is one or more in He bioxin；
E) flue gas that circulating fluidized bed dry desulfuration absorbing tower comes out enters postposition deduster, and removing is de- in circulating fluidized bed dry
The particulate matter formed in sulphur absorption tower, the flue gas after being purified；
F) step B) in remove fly ash granule mixed in pre-mixing apparatus with quick lime, subsequently into digester digestion formation
Absorbent is stored in absorbent storehouse, is entered back into and is used as absorbent in circulating fluidized bed dry desulfuration absorbing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810409096.5A CN108373936A (en) | 2018-05-02 | 2018-05-02 | A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810409096.5A CN108373936A (en) | 2018-05-02 | 2018-05-02 | A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108373936A true CN108373936A (en) | 2018-08-07 |
Family
ID=63033117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810409096.5A Pending CN108373936A (en) | 2018-05-02 | 2018-05-02 | A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108373936A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486534A (en) * | 2018-12-20 | 2019-03-19 | 中国平煤神马能源化工集团有限责任公司 | A kind of coal gas dust removal sulfur method |
| CN109966915A (en) * | 2019-03-29 | 2019-07-05 | 北京国电龙源环保工程有限公司 | A kind of gasification of biomass coupling coal-burning boiler full load SCR denitration system and process |
| CN113883528A (en) * | 2021-10-18 | 2022-01-04 | 西安西热锅炉环保工程有限公司 | Multi-source waste disposal system and method based on pulverized coal fired boiler |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985003455A1 (en) * | 1984-02-06 | 1985-08-15 | Hugo Petersen, Gesellschaft Für Verfahrenstechnisc | Method for stripping noxious gas substances contained in flue gas |
| CH664504A5 (en) * | 1983-03-12 | 1988-03-15 | Urban Cleve | Dry purificn. of flue gas by adding fly ash |
| CN1307926A (en) * | 2000-12-15 | 2001-08-15 | 清华大学 | Dry cyclic suspension bed fume desulfurizing process and system |
| CN103239985A (en) * | 2013-05-14 | 2013-08-14 | 中国环境科学研究院 | Efficient coal-fired flue gas sulfur removal and mercury removal method and device |
| CN203549870U (en) * | 2013-11-22 | 2014-04-16 | 薛成强 | Flue gas desulfurization and denitrification integrated device of circulating fluidized bed boiler |
| CN106731538A (en) * | 2016-12-30 | 2017-05-31 | 福建龙净脱硫脱硝工程有限公司 | A kind of dry desulfurization dust pelletizing system and its flue gas water saving fixtures |
| CN107245353A (en) * | 2017-07-21 | 2017-10-13 | 中国华能集团清洁能源技术研究院有限公司 | Gasification of biomass CFBB combined generating system and method for work |
| CN206762557U (en) * | 2017-04-21 | 2017-12-19 | 上海市机电设计研究院有限公司 | The biomass electric power plant system for cleaning fume of dry desulfurization and low-temperature denitration |
| CN208136188U (en) * | 2018-05-02 | 2018-11-23 | 福建龙净脱硫脱硝工程有限公司 | A kind of flue gas purification system of fire coal coupled biological matter gasification |
-
2018
- 2018-05-02 CN CN201810409096.5A patent/CN108373936A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH664504A5 (en) * | 1983-03-12 | 1988-03-15 | Urban Cleve | Dry purificn. of flue gas by adding fly ash |
| WO1985003455A1 (en) * | 1984-02-06 | 1985-08-15 | Hugo Petersen, Gesellschaft Für Verfahrenstechnisc | Method for stripping noxious gas substances contained in flue gas |
| CN1307926A (en) * | 2000-12-15 | 2001-08-15 | 清华大学 | Dry cyclic suspension bed fume desulfurizing process and system |
| CN103239985A (en) * | 2013-05-14 | 2013-08-14 | 中国环境科学研究院 | Efficient coal-fired flue gas sulfur removal and mercury removal method and device |
| CN203549870U (en) * | 2013-11-22 | 2014-04-16 | 薛成强 | Flue gas desulfurization and denitrification integrated device of circulating fluidized bed boiler |
| CN106731538A (en) * | 2016-12-30 | 2017-05-31 | 福建龙净脱硫脱硝工程有限公司 | A kind of dry desulfurization dust pelletizing system and its flue gas water saving fixtures |
| CN206762557U (en) * | 2017-04-21 | 2017-12-19 | 上海市机电设计研究院有限公司 | The biomass electric power plant system for cleaning fume of dry desulfurization and low-temperature denitration |
| CN107245353A (en) * | 2017-07-21 | 2017-10-13 | 中国华能集团清洁能源技术研究院有限公司 | Gasification of biomass CFBB combined generating system and method for work |
| CN208136188U (en) * | 2018-05-02 | 2018-11-23 | 福建龙净脱硫脱硝工程有限公司 | A kind of flue gas purification system of fire coal coupled biological matter gasification |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486534A (en) * | 2018-12-20 | 2019-03-19 | 中国平煤神马能源化工集团有限责任公司 | A kind of coal gas dust removal sulfur method |
| CN109486534B (en) * | 2018-12-20 | 2021-06-08 | 中国平煤神马能源化工集团有限责任公司 | Coal gas dust removal and desulfurization method |
| CN109966915A (en) * | 2019-03-29 | 2019-07-05 | 北京国电龙源环保工程有限公司 | A kind of gasification of biomass coupling coal-burning boiler full load SCR denitration system and process |
| CN113883528A (en) * | 2021-10-18 | 2022-01-04 | 西安西热锅炉环保工程有限公司 | Multi-source waste disposal system and method based on pulverized coal fired boiler |
| CN113883528B (en) * | 2021-10-18 | 2022-06-10 | 西安西热锅炉环保工程有限公司 | Multi-source waste disposal system and method based on pulverized coal fired boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6334402B2 (en) | Dry adsorbent input during steady state in dry scrubber | |
| CN101648099B (en) | Purifying treatment device and purifying treatment method for flue gas multicomponent pollutant generated by incinerating refuse | |
| CN203447967U (en) | Combined smoke desulfuration, denitration and demercuration device of industrial boiler | |
| CN108636098A (en) | A kind of the minimum discharge purifier and its method of burning city domestic garbage flue gas | |
| CN101785969B (en) | Method of flue gas purification and system thereof | |
| CN101342459A (en) | Exhuast gas desulfurization, recycle and treatment method and apparatus | |
| CN102114386B (en) | Desulfurization and demercuration method for flue gas | |
| CN107617317A (en) | A kind of ultra-clean cleaning system of flue gas | |
| CN104759192A (en) | Low-cost coal-fired flue gas various pollutant ultralow emission system and low-cost coal-fired flue gas various pollutant ultralow emission method | |
| CN202185253U (en) | Exhaust gas purifying system for waste incineration | |
| CN102233230A (en) | Waste burning smoke purification process and purification system | |
| CN102716635A (en) | Method and system for simultaneously removing heavy metals and fine particle matters in smoke | |
| CN112121614A (en) | Stable ultralow emission device and method for solid waste incineration flue gas | |
| CN108373936A (en) | A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter | |
| CN105169943A (en) | Integrated system for coke oven flue gas desulfurization and denitrification and waste heat recovery | |
| CN205127750U (en) | Desulphurization of exhaust gas denitration of coke oven flue and waste heat recovery's integrated system | |
| CN109140451A (en) | A kind of flue gas purifying technique and equipment of the processing of animal innoxious burning | |
| CN107596883A (en) | A kind of desulfurization wastewater Zero discharging system and its method of work | |
| CN204996310U (en) | Coke oven flue gas SOx/NOx control unites purifier | |
| CN208136188U (en) | A kind of flue gas purification system of fire coal coupled biological matter gasification | |
| CN208809774U (en) | A kind of ultra-clean purification system of flue gas | |
| CN217220890U (en) | Domestic waste burns flue gas denitration deacidification dust removal integration system of optimization | |
| CN204582930U (en) | A kind of low cost coal-fired flue-gas multiple pollutant minimum discharge system | |
| CN105477963A (en) | Coal-fired boiler flue gas environmentally-friendly deep treatment method and apparatus | |
| CN210278551U (en) | Hg and SO3Bag type dust collector with synergistic removal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |