CN105698187B - Treatment device for dioxin-like atmospheric pollutants in household garbage incineration flue gas - Google Patents
Treatment device for dioxin-like atmospheric pollutants in household garbage incineration flue gas Download PDFInfo
- Publication number
- CN105698187B CN105698187B CN201610195184.0A CN201610195184A CN105698187B CN 105698187 B CN105698187 B CN 105698187B CN 201610195184 A CN201610195184 A CN 201610195184A CN 105698187 B CN105698187 B CN 105698187B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- dioxin
- heat
- heat pipe
- incineration
- 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.)
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- 239000003546 flue gas Substances 0.000 title claims abstract description 183
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 178
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 57
- 230000000185 dioxinlike effect Effects 0.000 title claims abstract description 31
- 239000003344 environmental pollutant Substances 0.000 title abstract description 31
- 231100000719 pollutant Toxicity 0.000 title abstract description 31
- 238000002485 combustion reaction Methods 0.000 claims abstract description 83
- 238000012545 processing Methods 0.000 claims abstract description 59
- 239000002918 waste heat Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 50
- 239000000428 dust Substances 0.000 claims abstract description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000002253 acid Substances 0.000 claims abstract description 28
- 238000004056 waste incineration Methods 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000010791 domestic waste Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 12
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims description 60
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 150000001875 compounds Chemical class 0.000 claims description 32
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 26
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- NSIKFNOYIGGILA-UHFFFAOYSA-N [Na].[Na].[K] Chemical compound [Na].[Na].[K] NSIKFNOYIGGILA-UHFFFAOYSA-N 0.000 claims description 19
- 238000004064 recycling Methods 0.000 claims description 18
- 239000007864 aqueous solution Substances 0.000 claims description 17
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 239000003517 fume Substances 0.000 claims description 7
- 230000008929 regeneration Effects 0.000 claims description 7
- 238000011069 regeneration method Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 6
- 239000000295 fuel oil Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 230000002411 adverse Effects 0.000 claims description 5
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- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000002737 fuel gas Substances 0.000 claims description 5
- 238000005213 imbibition Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 230000001172 regenerating effect Effects 0.000 claims description 5
- 238000005482 strain hardening Methods 0.000 claims description 5
- 238000002207 thermal evaporation Methods 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- 238000003723 Smelting Methods 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 150000002013 dioxins Chemical class 0.000 abstract description 11
- 150000002896 organic halogen compounds Chemical class 0.000 abstract description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 39
- 239000003500 flue dust Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- -1 Polychlorinated Biphenyls PCBs Chemical class 0.000 description 4
- 239000000809 air pollutant Substances 0.000 description 4
- 231100001243 air pollutant Toxicity 0.000 description 4
- 230000001925 catabolic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 3
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 229910003251 Na K Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VGGGRWRBGXENKI-UHFFFAOYSA-N 1-chlorodibenzo-p-dioxin Chemical compound O1C2=CC=CC=C2OC2=C1C=CC=C2Cl VGGGRWRBGXENKI-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 108010054050 Plectin Proteins 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- ZCILODAAHLISPY-UHFFFAOYSA-N biphenyl ether Natural products C1=C(CC=C)C(O)=CC(OC=2C(=CC(CC=C)=CC=2)O)=C1 ZCILODAAHLISPY-UHFFFAOYSA-N 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 150000004826 dibenzofurans Chemical class 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
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- DMDOTRUOIVBPSF-UHFFFAOYSA-N naphthalene;hydrochloride Chemical compound Cl.C1=CC=CC2=CC=CC=C21 DMDOTRUOIVBPSF-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- 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
-
- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F23/00—Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/102—Combustion in two or more stages with supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/103—Combustion in two or more stages in separate chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
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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
- 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
- F23J2215/40—Carbon monoxide
-
- 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
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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
- F23J2217/10—Intercepting solids by filters
- F23J2217/101—Baghouse type
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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
- F23J2217/10—Intercepting solids by filters
- F23J2217/104—High temperature resistant (ceramic) type
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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
- F23J2219/00—Treatment devices
- F23J2219/30—Sorption devices using carbon, e.g. coke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/15043—Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a device for treating dioxin-like atmospheric pollutants in household garbage incineration flue gas. Belongs to a method for removing organic halogen compounds in flue gas. The device is characterized in that the processing device is composed of the following devices which are connected in sequence: the system comprises a primary enhanced combustion furnace (1), a secondary enhanced combustion furnace (2), a silicon nitride porous ceramic filter (3), a countercurrent heat exchange waste heat boiler (4), a combined heat pipe exchanger (5), a filter bag dust collector (6), an acid gas removal system (7), an activated carbon adsorption tower (8) and an induced draft fan (9); the utility model provides a processing apparatus of dioxin class atmospheric pollutants in domestic waste burns flue gas that not only waste heat recovery is efficient, moreover can carry out effective treatment to the dioxin class (dioxins) atmospheric pollutants that produce at domestic waste burns the in-process. All items of the atmospheric pollutants are lower than the limit values specified in the table 4 of GB18485-2014 'control standard of municipal solid waste incineration pollutants'. Wherein the discharge amount of dioxin-like atmospheric pollutants is less than or equal to 0.1ngTEQ/m3。
Description
Technical field
The present invention is a kind of processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution.Belong in flue gas
The minimizing technology of organohalogen compound.
Background technology
House refuse refers to solid waste being generated in resident's daily life, being not considered being worth and abandon, mainly
Including two major class of organic matter and inorganic matter.Organic matter includes kitchen waste material, paper, plastics, plant leaf etc., and inorganic matter includes ash
Soil, glass, metal etc..With expanding economy and the raising of people's quality of life, the collection quantity of rubbish increases year by year, wherein
The content of organic matter is continuously increased.
The environment that so substantial amounts of house refuse is survived for people brings serious pollution.Including air, soil, water body.
It threatens for human health.The recycling of house refuse, harmless treatment be put it is extremely urgent important to the world
Problem.
At present, domestic rubbish disposal mainly has landfill, compost and burns three big methods.Since burning method has innoxious journey
Degree is high, volume reduction amount is big, floor space is small, processing is timely and the advantages that recyclable thermal energy, it has also become handles the master of municipal refuse
Want method.
But since component of refuse is complicated, can be generated after burning largely containing heavy metal, bioxin, SO2, HCl, HF etc.
Toxic, pernicious gas is discharged into air with flue gas, becomes the important component of atmosphere pollution, and accumulate in vivo and
It is constantly concentrated with biological chain.It is very big to environment and human health risk.The wherein toxicity of, Yi bioxin and harm is the most prominent.
Bioxin PCDDs is the part in 2000 Polychlorinated Biphenyls PCBs, is in nature burning and industrial production
The persistence organic pollutant UPPOP unintentionally generateds.Bioxin is to be coupled 2 by 2 or 1 oxygen atom and substituted by chlorine
The tricyclic aromatic organic compound of phenyl ring composition.Including more chloro dibenzodioxin English PCDDs and polychlorinated dibenzofurans
This two classes thrcylic aromatic hydrocarbon compound of PCDFs, the substitution number of chlorine atom is 1~8 in molecular structure.According to the substitution number of chlorine
And the difference of position, this kind of compound theoretically share 210 kinds of homologues and isomers, wherein PCDDs supplies 75 kinds, and PCDFs is common
135 kinds.In addition, more halogen biphenyl (such as Polychlorinated biphenyls PCBs, polybrominated biphenyls PBBs), more halogen Biphenyl Ether (such as polychlorinated diphenyl ethers
PCDEs, polybrominated diphenyl ethers PBDEs), naphthalene chloride PCNs and bromo bioxin (such as PBDDs, PBDFs), due to them
The similitude of Yu bioxin in terms of chemical constitution, chemical property and toxicologic properties, so being collectively referred to as dioxin again
Compound (Dioxin-like compounds).
Bioxin (dioxins) non-artificial production, without any purposes.It is the carbon when organic compound burns mostly
Hydrogen compound and the chloropexia on methyl chloride, generate by a series of complex chemical reaction.Such as：
What 1. natures generated
Forest fire, the volcanic eruption of nature；The biochemical action and photochemical action of microorganism；It is biological or even the mankind new
What old metabolism generated.
2. the combustion process that people is
Metal smelt, waste incineration, courage electrical appliance waste burn.Family's heating, culinary art, fuel oil, combustion gas aircraft, vapour
Vehicle, steamer operation.
3. chemical manufacturing process
The manufacture of chlorine-containing compound is as containing chloro pesticide, insecticide, disinfectant, bleaching agent
4. industrial combustions
Fossil fuel boiler combustion, Industrial Stoves burning such as silicate industry kiln.
Dioxin atmosphere pollution, very low dose will generate illeffects to organism.With acute fatal toxicity,
High carcinogenic, teratogenesis, mutagenesis, endocrine disrupting and the harm such as reproduction and development toxicity.Moreover, bioxin is difficult to drop
Solution, can accumulate in vivo, into environment by extended residual.It is duration extremely long pollutant in the environment.Therefore, two
The toxicity of Evil English is extremely strong, is I class carcinogenic substance of the mankind.
In view of the above, the improvement and control of dioxin from incineration flue gas of household garbage class atmosphere pollution, is good for for the mankind
Health is most important with environmental protection.
In incineration process of domestic garbage, meanwhile, it is substantial amounts of hot with releasing.Undoubtedly valuable heat resource.By its
Recycling is of great significance for energy saving.
In the prior art, there is following deficiency in the processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution
Part：
1. in incineration process of domestic garbage, since the control of burning process condition and house refuse material homogeneous degree be not good enough,
It is caused to carry dioxin-like compounds secretly to fail to be decomposed completely, dioxin-like compound is caused to enter flue gas；It is more serious
Be that the chlorinated organics carried secretly in house refuse fail to be fully burned, cause largely to generate chlorophenol, Polychlorinated biphenyls etc. two
The predecessor of Evil English is carried along into smoke processing system by flue dust；
2. in incineration flue gas of household garbage processing system, residual heat boiler for exchanging heat, flue gas cools down, bag collection etc. science and engineering
Skill, processing time length, operation temperature are fallen into easily 250~680 DEG C of temperature ranges of generation bioxin.For the predecessor in flue gas
In 250~500 DEG C of He Cheng bioxin and chlorophenol, chlorophenol group, various organic matters and organic group in 580~680 DEG C of high temperature
Gas is combined to bioxin and provides condition.Cause synthesizing again for dioxin pollutant, considerably increase bioxin in flue gas
Class atmosphere pollution.
3. carrying a large amount of dust in incineration flue gas of household garbage, the chlorinated organics carried secretly in dust fail fully to be fired
It burns, generation bioxin predecessors are adsorbed by flue dust, and in the conveying and processing procedure of flue gas, pass through the excessively gold such as copper, iron
Under the catalytic action of category and its oxide, dioxin pollutant is further generated.
4. to avoid the low temperature synthesis zone that bioxin synthesizes again, the heat of 500 DEG C of flue gas or more is only utilized.Cause thermal energy
Waste.
A kind of not only thermal energy organic efficiency is high, but also can be in incineration process of domestic garbage, generation bioxin
Class (dioxins) atmosphere pollution, the place for the dioxin from incineration flue gas of household garbage class atmosphere pollution effectively administered
It is that people are expected to manage device.
The content of the invention
It is an object of the invention to avoid above-mentioned shortcoming of the prior art, and provide a kind of not only thermal energy recycling effect
Rate is high, and can be in incineration process of domestic garbage, generation dioxins (dioxins) atmosphere pollution carries out
The processing unit for the dioxin from incineration flue gas of household garbage class atmosphere pollution effectively administered.
The purpose of the present invention can be reached by following measure：
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, it is characterised in that processing
Device is made of the equipment that order below connects：Primary reinforcement combustion furnace 1, secondary reinforcement combustion furnace 2, porous SiN ceramic mistake
Filter 3, countercurrent flow waste heat boiler 4, combined heat pipe exchanger 5, bag dust collector 6, acid gas removal system 7, activity
Charcoal adsorption tower 8 and air-introduced machine 9；
The operation method of the processing unit includes the following steps：
1. flue gas overheavy firings
Flue gas from domestic waste incineration initially enters primary reinforcement combustion furnace 1, burns subsequently into secondary reinforcement
2 overheavy firing of stove；So that the combustable organic object carried in flue gas continues fully burning；Meanwhile in incineration process of domestic garbage
Generation dioxin-like compounds (Dioxin-like compounds) and predecessor are thermally decomposed；
2. filtering high-temperature flue gas dust separations
Flue gas after step 1. overheavy firing enters porous SiN ceramic filter 3, dust removal by filtration purification；Flue dust
Grain absorption dioxin-like compounds (Dioxin-like compounds) and the predecessor overwhelming majority are trapped；
3. waste heat boilers thermal energy recycles
Through the step 2. purified flue gas of dust removal by filtration, into countercurrent flow waste heat boiler 4, changed with working medium adverse current in boiler
Heat, the high temperature heat carried pass to boiler working substance；Flue gas own temperature is reduced to≤700 DEG C, realizes that waste heat level-one is returned
It receives；
4. the combined formula heat exchange of heat pipe of flue gases drastically cools down
Flue gas from step 3. after waste heat boiler 4 recycles thermal energy enters the evaporator section of combined heat pipe exchanger 5 i.e.
Heating section exchanges heat with the liquid refrigerant in heat pipe, and the thermal energy conduction that flue gas is carried is to the liquid refrigerant in heat pipe；In heat pipe
By thermal evaporation, the gaseous working medium of generation, by intermediate span line, flows to cold liquid refrigerant by pressure difference small in heat pipe space
Solidifying section；In condensation segment, gaseous working medium discharges latent heat to low-temperature receiver (fluid outside heat pipe) and condenses, and the liquid refrigerant of condensation leans on imbibition
The capillarity of core, and evaporator section is flow back into, continue to repeat the above process；So in cycles, thermal energy flue gas carried
The cold working medium of entrance of waste heat boiler 4 is conducted to, for improving waste heat boiler inflow temperature；Or heating air, it is melted for copper scap
The inlet air temperature of furnace, primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2；Or output hot wind, hot water are sent outside, for other
User uses；Meanwhile flue gas own temperature is reduced to less than 200 DEG C in 2 seconds, and continue to be cooled to 90 DEG C with
Under, flow out combined heat pipe exchanger 5；Flue gas drastically cools down, while realizes fume afterheat secondary recovery；
5. filter bag dedustings
Flue gas from step 4. combined heat pipe exchanger 5 enters bag dust collector 6 and filters, further removes smoke abatement；
6. acid gas removals
Flue gas from step 5. after 6 dust removal by filtration of bag dust collector enters acid gas removal system 7, removing vulcanization
Object and other acid gas contaminants：, such as H2S、NOx、CO、CO2、HCl；
7. activated carbon adsorptions
Flue gas from step 6. after removing sour gas enters activated carbon adsorber 8, through activated carbon adsorption, removing life
Various atmosphere pollutions in flue gas of refuse burning living, and foul smell taste is removed, after up to standard, discharged through air-introduced machine 9.
In the processing unit of the present invention, flue gas overheavy firing, filtering high-temperature flue gas dust separation and the combined formula of flue gas
Heat exchange of heat pipe drastically cools down, and is all the technical characteristic that outstanding contributions are made to the completing the present invention of the task.
Flue gas from domestic waste incineration initially enters primary reinforcement combustion furnace 1, burns subsequently into secondary reinforcement
2 overheavy firing of stove；The temperature of flue gas is improved, adds fume high-temperature burning time, makes the combustable organic object in flue gas in height
The lower fully burning of temperature.Meanwhile dioxin-like compounds (Dioxin-like compounds) and chlorine are generated during the burning process
The predecessor of the bioxin such as phenol, Polychlorinated biphenyls is thermally decomposed；Reduce the dust in flue gas and its carrying from source has
The quantity of organic pollutants.So as to significantly reduce the load of flue gas post processing.
Filtering high-temperature flue gas dust separation so that soot dust granule absorption dioxin-like compounds (Dioxin-like
Compounds) and its predecessor is largely trapped；The chlorinated organics carried secretly in house refuse are avoided to fail to obtain fully
Burning, generation bioxin predecessors are adsorbed by flue dust, and in the conveying and processing procedure of flue gas, it is excessive by copper, iron etc.
Under the catalytic action of metal and its oxide, dioxin pollutant is further generated.It effectively reduces in subsequent processing mistake
The probability of Cheng Zhong, bioxin precursor synthesis dioxin pollutant and high temperature vapor- phase synthesis bioxin.It also reduces simultaneously low
The load of warm dedusting.
The flue gas of waste heat boiler is left, combined heat pipe exchanger is flowed through, drastically cools down.It will within the time of≤2 seconds
Flue gas own temperature is reduced to less than 200 DEG C from 700 DEG C.Quickly cross bioxin predecessor He Cheng dioxins pollutant again
Temperature range, so as to avoid the regeneration of dioxin pollutant.
Heat pipe is the product of space technology development, in recent years, should with the continuous ripe of hot pipe technique research and deeply
With focus also from spatial spread to ground.Heat pipe is the efficient heat transfer member that heat transfer is realized by the phase transformation of therein working fluid
Part can be transmitted substantial amounts of heat without additionaling power at a distance by the cross-sectional passage of internal very little.Heat pipe has very
High thermal conductivity, excellent isothermal, heat flow density changeability, the invertibity of direction of heat flow, thermal diode and thermal switch, perseverance
Temperature characteristics and the extensive adaptability to environment.The present inventor, by heat exchange of heat pipe for the flue-gas temperature of the present invention
Drastically cool down, achieved the purpose that anticipation.
The purpose of the present invention can also be reached by following measure:
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, it is characterised in that step
1. the primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2 use pipe-type burner, automatic control system is configured, it is right
It is carried out automatically controlling in fuel flow rate, air mass flow, it is ensured that temperature >=1000 DEG C in burner.
It is preferred water-supply scheme.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, step 1. described one
Grade overheavy firing stove 1 and secondary reinforcement combustion furnace 2 are additionally provided with electronic striking control switch, realize the automatic of fuel oil or fuel gas
Igniting, it is ensured that after the CO in flue gas reaches setting concentration.That is ignition.
It is a preferred water-supply scheme.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, step 2. middle use
Porous SiN ceramic filter 3 selects the silicon nitride foam ceramic material manufacture of silicon nitride, aluminium oxide and yttrium oxide composition.
The mass percentage composition of three is silicon nitride：Aluminium oxide：Yttrium oxide=90:2:8.
It is preferred technical solution.
The present invention dioxin from incineration flue gas of household garbage class atmosphere pollution processing unit, step 3. described in
Heat exchange between 4 flue gas of countercurrent flow waste heat boiler and boiler afterheat recycling working medium using double-jacket tube formula countercurrent heat exchange method or
Three bushing type countercurrent heat exchange methods；Wherein：
The double-jacket tube formula countercurrent heat exchange method, heat-exchanger rig is by the different two straight tubes suit configuration combination of several diameters
It forms, flue gas walks central tube, and waste heat recovery working medium walks annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow；
The three bushing type countercurrent heat exchange methods, heat-exchanger rig are made of the different three straight tubes suit configuration of diameter, cigarette
Make central tube and outer annular space leave with rage, waste heat recovery working medium walks interior annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow.
It is preferred technical solution.
The present invention dioxin from incineration flue gas of household garbage class atmosphere pollution processing unit, step 4. described in
The combined heat pipe exchanger that combined heat pipe exchanger 5 is made of the heat pipe filled with different working medium in pipe.It is preferred skill
Art scheme.
Entire combined heat pipe exchanger is divided into high-temperature heat pipe area, moderate temperature heat pipe area and Low Temperature Thermal area under control.Operating temperature by
It is high to Low, optimum is selected in the heat pipe of the regional work according to the physical property of different operating medium and transmission factor N, and utilizes heat
The heat flow density tunable characteristic of pipe, operating temperature in regulation pipe, with each region heat pipe of Safety Connection.
The present invention dioxin from incineration flue gas of household garbage class atmosphere pollution processing unit, step 4. described in
The working medium used in 5 heat pipe of combined heat pipe exchanger is the sodium-potassium-sodium alloy and water of different ratio respectively.It is preferred technical side
Case.
Research shows：Liquid Sodium and potassium can arbitrary proportion consolute, become sodium-potassium-sodium alloy (Na-K), fusing point is below sodium
Fusing point (about 98 DEG C) and potassium fusing point (about 63 DEG C).Slow-potassium-sodium alloy fusion temperature of different ratio can be varied from.Therefore with
Metallic sodium, metallic potassium are compared, and sodium-potassium-sodium alloy is a kind of more preferable heat transfer, heat-carrying agent.
The present invention dioxin from incineration flue gas of household garbage class atmosphere pollution processing unit, step 4. described in
The proportioning of working medium sodium-potassium-sodium alloy of use is in 5 heat pipe of combined heat pipe exchanger：The weight percent of potassium in sodium-potassium-sodium alloy
For 46%~89%.It is preferred technical solution.
Test data proves, when potassium in sodium-potassium-sodium alloy weight percent from 46%~89% when, the fusing point of Na-K alloy
Less than or equal to room temperature.That is above-mentioned sodium-potassium-sodium alloy is liquid at room temperature.Facilitate the filling and use of heat pipe.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, the sodium-potassium-sodium alloy
Proportioning be potassium in sodium-potassium-sodium alloy weight percent be 46%~89%.It is preferred technical solution.
The present invention dioxin from incineration flue gas of household garbage class atmosphere pollution processing unit, step 4. described in
Combined heat pipe exchanger 5 provides high temperature for domestic waste incineration, primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2 and helps
Air is fired, improves combustion position, improves efficiency of combustion, save fuel or >=350 DEG C of cleaning is provided for other hot wind users
Drying hot wind.
Combined formula heat exchange of heat pipe 5 by combustion-supporting Hot-blast Heating to 350~400 DEG C, burn by the house refuse as the present invention
The combustion air for burning stove, primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2 uses, and capable of saving fuel more than 40%；
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, the sour gas of step 6.
Body removal methods use NaOH aqueous solutions as desulfurizing agent, with Ca (OH)2Aqueous solution is regenerative agent, when NaOH aqueous solutions lose
After effect, pass through Ca (OH)2After aqueous solution regeneration, reuse.Reaction equation is as follows：
2NaOH+SO2→Na2SO3+H2O
Na2SO3+SO2+H2O→2NaHSO3
Reaction product after desulfurization enters in regenerated reactor with Ca (OH)2It is regenerated, regenerative response process is as follows：
Ca(OH)2+Na2SO3→2NaOH+CaSO3
Ca(OH)2+2NaHSO3→Na2SO3+CaSO3·1/2H2O+1/2H2O
NaOH aqueous solutions are used as desulfurizing agent, rate of sulphur expulsion block, desulfuration efficiency are high, and can also remove simultaneously
CO in flue gas2、HCl、NOxWait acid contaminants.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, it is characterised in that step
1. domestic waste incineration described in is circulating fluidized bed incinerator.
There is the high temperature bed material of stable circulation in circulating fluidized bed incinerator burner hearth, the house refuse newly added in only accounts for bed material
Very little share, since gas-solid blends strongly in stove, heat transfer boundary condition is good, and the rubbish newly added in can be rapidly heated and stablize combustion
It burns.For uncombusted rubbish particle, its residence time in stove is extended by repeatedly cycling, can repeatedly be participated in bed
Violent quality and heat exchange, it is complete to be conducive to incineration firing.
Circulating fluidized bed incinerator is particularly suitable for this moisture of burning domestic garbage is high, ash content is more, hot-restriking die is big
Fuel, the combustion caused by density, shape, chemical property, fire behaviour and fuel characteristic of component of refuse etc. can be overcome different
Burn the problems such as unstable.Stablize burning and abundant after-flame, be conducive to mitigate the pollutant burden of subsequent processing stage.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, more than the countercurrent flow
The working medium of heat boiler 4 is water or low boiling point organic working medium.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, countercurrent flow waste heat pot
The thermal energy that stove 4 and combined heat pipe exchanger 5 recycle, is used directly in the form of thermal energy or is by the thermal energy of recycling
Electric energy or mechanical energy.
The processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention, has compared with prior art
Following good effect：
1. provides one kind, not only waste heat recovery is efficient, but also can be in incineration process of domestic garbage, generating
Dioxins (dioxins) atmosphere pollution, the dioxin from incineration flue gas of household garbage class air effectively administered are dirty
Contaminate the processing unit of object.
2. in the tail gas that is discharged after the method processing of the present invention, during atmosphere pollution whole project pollutant is below
Magnificent people's republic's standard GB18485-2014《Consumer waste incineration pollutant catabolic gene standard》In, " 4 domestic waste incineration of table
Limit value as defined in pollutant emission limit in discharge flue gas ".Wherein dioxin Air Pollutants Emissions≤0.1ngTEQ/
m3。
3. uses two-stage flue gas overheavy firing, fume high-temperature burning time is added, makes the combustable organic in incineration flue gas
Object fully burns at high temperature.Meanwhile dioxin-like compounds (Dioxin-like is generated in incineration process of domestic garbage
Compounds) and the predecessor of the bioxin such as chlorophenol, Polychlorinated biphenyls is thermally decomposed；Reduce the ash in flue gas from source
The quantity of dirt and its organic pollution of carrying.So as to significantly reduce the load of flue gas post processing.
4. filtering high-temperature flue gas dust separations, filtering high-temperature flue gas dust separation so that soot dust granule adsorbs bioxin
Class compound (Dioxin-like compounds) and its predecessor are largely trapped；Avoid containing of being carried secretly in copper scap
Chlorine organic fails to be fully burned, and generation bioxin predecessors are adsorbed by flue dust, and in the conveying of flue gas and treated
Cheng Zhong under the catalytic action by the transition metals such as copper, iron and its oxide, further generates dioxin pollutant.Effectively
Ground reduces in subsequent processes, bioxin precursor synthesis dioxin pollutant and high temperature vapor- phase synthesis bioxin
Probability.The load of low temperature dedusting is also reduced simultaneously.
5. is present invention employs heat exchange of heat pipe, since heat exchange of heat pipe has strong thermal conductivity, good isothermal, spirit
Heat flow density changeability living, it is achieved thereby that flue-gas temperature rapid drawdown, while high efficiency recycling thermal energy.Leave the cigarette of waste heat boiler
Flue gas own temperature is reduced to 200 by gas in≤2 seconds through drastically cooling down in combined heat pipe exchanger from 700 DEG C
Below DEG C.The quick temperature range for crossing bioxin predecessor He Cheng dioxins pollutant again, so as to avoid bioxin
The regeneration of pollutant.
6. the thermal energy of heat exchange of heat pipes recycling is domestic waste incineration, primary reinforcement combustion furnace 1 and secondary reinforcement combustion
It burns stove 2 and high temperature combustion air is provided, improve combustion position, improve efficiency of combustion, capable of saving fuel more than 40%.
Description of the drawings
Fig. 1 is the processing unit connection signal of the dioxin from incineration flue gas of household garbage class atmosphere pollution of the present invention
Figure.Wherein：
1. primary reinforcement combustion furnace
2. secondary reinforcement combustion furnace
3. porous SiN ceramic filter
4. countercurrent flow waste heat boiler
5. combined heat pipe exchanger
6. bag dust collector
7. acid gas removal system
8. activated carbon adsorber
9. air-introduced machine
Fig. 2 is combined heat pipe exchanger schematic diagram
Fig. 3 is heat pipe operating diagram
Specific embodiment
The present invention will now be further detailed embodiment：
A kind of processing unit of 1 dioxin from incineration flue gas of household garbage class atmosphere pollution of embodiment
Processing unit is made of the equipment that order below connects：Primary reinforcement combustion furnace 1, secondary reinforcement combustion furnace 2, nitridation
Silicon porous ceramic filter 3, countercurrent flow waste heat boiler 4, combined heat pipe exchanger 5, bag dust collector 6, sour gas takes off
Except system 7, activated carbon adsorber 8 and air-introduced machine 9；
The operation method of the processing unit includes the following steps：
1. flue gas overheavy firings
Flue gas from domestic waste incineration initially enters primary reinforcement combustion furnace 1, burns subsequently into secondary reinforcement
2 overheavy firing of stove；So that the combustable organic object carried in flue gas continues fully burning；Meanwhile in incineration process of domestic garbage
Generation dioxin-like compounds (Dioxin-like compounds) and predecessor are thermally decomposed；
Using pipe-type burner, configuration, which automatically controls, is for above-mentioned primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2
System, carries out automatically controlling, it is ensured that the temperature in burner is at 1000 DEG C~1100 DEG C for fuel flow rate, air mass flow.
Above-mentioned secondary reinforcement combustion furnace 2 is additionally provided with electronic striking control switch, realizes the automatic of fuel oil or fuel gas
Igniting, as CO concentration=50mg/m in flue gas3When, auto-ignition combustion, it is ensured that CO concentration≤50mg/m in flue gas3。
2. filtering high-temperature flue gas dust separations
Flue gas after step 1. overheavy firing enters porous SiN ceramic filter 3, dust removal by filtration purification；Flue dust
Grain absorption dioxin-like compounds (Dioxin-like compounds) and the predecessor overwhelming majority are trapped；
Above-mentioned porous SiN ceramic filter 3 selects the nitridation silicon foam pottery of silicon nitride, aluminium oxide and yttrium oxide composition
Ceramic material manufactures.The mass percentage composition of three is silicon nitride：Aluminium oxide：Yttrium oxide=90:2:8.
3. waste heat boilers thermal energy recycles
Through the step 2. purified flue gas of dust removal by filtration, into countercurrent flow waste heat boiler 4, changed with working medium adverse current in boiler
Heat, the high temperature heat carried pass to boiler working substance；Flue gas own temperature is reduced to≤700 DEG C, realizes that waste heat level-one is returned
It receives；
Heat exchange between 4 flue gas of countercurrent flow waste heat boiler and boiler afterheat recycling working medium, using double-jacket tube formula
Countercurrent heat exchange method, heat-exchanger rig are made of the different two straight tubes suit configuration combination of several diameters, and flue gas walks central tube, waste heat
Recycling working medium walks annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow；
4. the combined formula heat exchange of heat pipe of flue gases drastically cools down
Flue gas from step 3. after waste heat boiler 4 recycles thermal energy enters the evaporator section of combined heat pipe exchanger 5 i.e.
Heating section exchanges heat with the liquid refrigerant in heat pipe, and the thermal energy conduction that flue gas is carried is to the liquid refrigerant in heat pipe；In heat pipe
By thermal evaporation, the gaseous working medium of generation, by intermediate span line, flows to cold liquid refrigerant by pressure difference small in heat pipe space
Solidifying section；In condensation segment, gaseous working medium discharges latent heat to low-temperature receiver (fluid outside heat pipe) and condenses, and the liquid refrigerant of condensation leans on imbibition
The capillarity of core, and evaporator section is flow back into, continue to repeat the above process；So in cycles, thermal energy flue gas carried
The cold working medium of entrance of waste heat boiler 4 is conducted to, for improving waste heat boiler inflow temperature；Or heating air, it is melted for copper scap
The inlet air temperature of furnace, primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2；Or output hot wind, hot water are sent outside, for other
User uses；Meanwhile flue gas own temperature is reduced to less than 200 DEG C in 2 seconds, and continue to be cooled to 90 DEG C with
Under, flow out combined heat pipe exchanger 5；Flue gas drastically cools down, while realizes fume afterheat secondary recovery；
The Combined type heat-pipe that the combined heat pipe exchanger 5 is made of the heat pipe filled with different working medium in pipe exchanges heat
Device.The working medium used in heat pipe is the sodium-potassium-sodium alloy and water of different ratio respectively.The proportioning of the sodium-potassium-sodium alloy is that sodium-potassium closes
The weight percent of potassium is 46%~89% in gold.
The combined heat pipe exchanger 5 is domestic waste incineration, primary reinforcement combustion furnace 1 and secondary reinforcement burn
Stove 2 provides high temperature combustion air, improves combustion position, improves efficiency of combustion, saves fuel or is provided for other hot winds user
>=350 DEG C of cleaning drying hot wind.
5. filter bag dedustings
Flue gas from step 4. combined heat pipe exchanger 5 enters bag dust collector 6 and filters, further removes smoke abatement；
6. acid gas removals
Flue gas from step 5. after 6 dust removal by filtration of bag dust collector enters acid gas removal system 7, removing vulcanization
Object and other acid gas contaminants：, such as H2S、NOx、CO、CO2、HCl；
Above-mentioned acid gas removal method uses NaOH aqueous solutions as acid gas removal agent, with Ca (OH)2It is water-soluble
Liquid is regenerative agent, after NaOH aqueous solutions fail, is passed through Ca (OH)2After aqueous solution regeneration, reuse.
7. activated carbon adsorptions
Flue gas from step 6. after removing sour gas enters activated carbon adsorber 8, through activated carbon adsorption, removing life
Various atmosphere pollutions in flue gas of refuse burning living, and foul smell taste is removed, after up to standard, discharged through air-introduced machine 9.
Waste heat recovery rate >=95%.In the tail gas that flue gas discharges after processing, atmosphere pollution whole project pollutant is equal
Less than People's Republic of China (PRC) standard GB18485-2014《Consumer waste incineration pollutant catabolic gene standard》In, " 4 house refuse of table
Limit value as defined in pollutant emission limit in incinerator discharge flue gas ".Wherein dioxin Air Pollutants Emissions≤
0.05ngTEQ/m3。
A kind of processing unit of 2 dioxin from incineration flue gas of household garbage class atmosphere pollution of embodiment
Processing unit is made of the equipment that order below connects：Primary reinforcement combustion furnace 1, secondary reinforcement combustion furnace 2, nitridation
Silicon porous ceramic filter 3, countercurrent flow waste heat boiler 4, combined heat pipe exchanger 5, bag dust collector 6, sour gas takes off
Except system 7, activated carbon adsorber 8 and air-introduced machine 9；
The operation method of the processing unit includes the following steps：
1. flue gas overheavy firings
Flue gas from circulating fluid bed domestic garbage burning stove initially enters primary reinforcement combustion furnace 1, subsequently into two
2 overheavy firing of grade overheavy firing stove；So that the combustable organic object carried in flue gas continues fully burning；Meanwhile in house refuse
Dioxin-like compounds (Dioxin-like compounds) are generated in burning process and predecessor is thermally decomposed；
Using pipe-type burner, configuration, which automatically controls, is for above-mentioned primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2
System, carries out automatically controlling, it is ensured that the temperature in burner is at 1050 DEG C~1100 DEG C for fuel flow rate, air mass flow.
Above-mentioned secondary reinforcement combustion furnace 2 is additionally provided with electronic striking control switch, realizes the automatic of fuel oil or fuel gas
Igniting, as CO concentration=30mg/m in flue gas3When, auto-ignition combustion, it is ensured that CO concentration≤30mg/m in flue gas3。
2. filtering high-temperature flue gas dust separations
Flue gas after step 1. overheavy firing enters porous SiN ceramic filter 3, dust removal by filtration purification；Flue dust
Grain absorption dioxin-like compounds (Dioxin-like compounds) and the predecessor overwhelming majority are trapped；
Above-mentioned porous SiN ceramic filter 3 selects the nitridation silicon foam pottery of silicon nitride, aluminium oxide and yttrium oxide composition
Ceramic material manufactures.The mass percentage composition of three is silicon nitride：Aluminium oxide：Yttrium oxide=90:2:8.
3. waste heat boilers thermal energy recycles
Through the step 2. purified flue gas of dust removal by filtration, into countercurrent flow waste heat boiler 4, changed with working medium adverse current in boiler
Heat, the high temperature heat carried pass to boiler working substance；Flue gas own temperature is reduced to 680 DEG C, realizes the recycling of waste heat level-one；
Heat exchange between 4 flue gas of countercurrent flow waste heat boiler and boiler afterheat recycling working medium, using three bushing types
Countercurrent heat exchange method, heat-exchanger rig are made of the different two straight tubes suit configuration combination of several diameters, and flue gas walks central tube, waste heat
Recycling working medium walks annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow；
4. the combined formula heat exchange of heat pipe of flue gases drastically cools down
Flue gas from step 3. after waste heat boiler 4 recycles thermal energy enters the evaporator section of combined heat pipe exchanger 5 i.e.
Heating section exchanges heat with the liquid refrigerant in heat pipe, and the thermal energy conduction that flue gas is carried is to the liquid refrigerant in heat pipe；In heat pipe
By thermal evaporation, the gaseous working medium of generation, by intermediate span line, flows to cold liquid refrigerant by pressure difference small in heat pipe space
Solidifying section；In condensation segment, gaseous working medium discharges latent heat to low-temperature receiver (fluid outside heat pipe) and condenses, and the liquid refrigerant of condensation leans on imbibition
The capillarity of core, and evaporator section is flow back into, continue to repeat the above process；So in cycles, thermal energy flue gas carried
The cold working medium of entrance of waste heat boiler 4 is conducted to, for improving waste heat boiler inflow temperature；Or heating air, it is melted for copper scap
The inlet air temperature of furnace, primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2；Or output hot wind, hot water are sent outside, for other
User uses；Meanwhile flue gas own temperature is reduced to less than 200 DEG C in 2 seconds, and continue to be cooled to 90 DEG C with
Under, flow out combined heat pipe exchanger 5；Flue gas drastically cools down, while realizes fume afterheat secondary recovery；
The Combined type heat-pipe that the combined heat pipe exchanger 5 is made of the heat pipe filled with different working medium in pipe exchanges heat
Device.The working medium used in heat pipe is the sodium-potassium-sodium alloy and water of different ratio respectively.The proportioning of the sodium-potassium-sodium alloy is that sodium-potassium closes
The weight percent of potassium is 60%~80% in gold.
The combined heat pipe exchanger 5 is domestic waste incineration, primary reinforcement combustion furnace 1 and secondary reinforcement burn
Stove 2 provides high temperature combustion air, improves combustion position, improves efficiency of combustion, saves fuel or is provided for other hot winds user
>=350 DEG C of cleaning drying hot wind.
5. filter bag dedustings
Flue gas from step 4. combined heat pipe exchanger 5 enters bag dust collector 6 and filters, further removes smoke abatement；
6. acid gas removals
Flue gas from step 5. after 6 dust removal by filtration of bag dust collector enters acid gas removal system 7, removing vulcanization
Object and other acid gas contaminants：, such as H2S、NOx、CO、CO2、HCl；
Above-mentioned acid gas removal method uses NaOH aqueous solutions as acid gas removal agent, with Ca (OH)2It is water-soluble
Liquid is regenerative agent, after NaOH aqueous solutions fail, is passed through Ca (OH)2After aqueous solution regeneration, reuse.
7. activated carbon adsorptions
Flue gas from step 6. after removing sour gas enters activated carbon adsorber 8, through activated carbon adsorption, removing life
Various atmosphere pollutions in flue gas of refuse burning living, and foul smell taste is removed, after up to standard, discharged through air-introduced machine 9.
Waste heat recovery rate >=95%.In the tail gas that flue gas discharges after processing, atmosphere pollution whole project pollutant is equal
Less than People's Republic of China (PRC) standard GB18485-2014《Consumer waste incineration pollutant catabolic gene standard》In, " 4 house refuse of table
Limit value as defined in pollutant emission limit in incinerator discharge flue gas ".Wherein dioxin Air Pollutants Emissions≤
0.08ngTEQ/m3。
A kind of processing unit of 3 dioxin from incineration flue gas of household garbage class atmosphere pollution of embodiment
Processing unit is made of the equipment that order below connects：Primary reinforcement combustion furnace 1, secondary reinforcement combustion furnace 2, nitridation
Silicon porous ceramic filter 3, countercurrent flow waste heat boiler 4, combined heat pipe exchanger 5, bag dust collector 6, sour gas takes off
Except system 7, activated carbon adsorber 8 and air-introduced machine 9；
The operation method of the processing unit includes the following steps：
1. flue gas overheavy firings
Flue gas from circulating fluid bed domestic garbage burning stove initially enters primary reinforcement combustion furnace 1, subsequently into two
2 overheavy firing of grade overheavy firing stove；So that the combustable organic object carried in flue gas continues fully burning；Meanwhile in house refuse
Dioxin-like compounds (Dioxin-like compounds) are generated in burning process and predecessor is thermally decomposed；
Using pipe-type burner, configuration, which automatically controls, is for above-mentioned primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2
System, carries out automatically controlling, it is ensured that the temperature in burner is at 1100 DEG C~1200 DEG C for fuel flow rate, air mass flow.
Above-mentioned secondary reinforcement combustion furnace 2 is additionally provided with electronic striking control switch, realizes the automatic of fuel oil or fuel gas
Igniting, as CO concentration=10mg/m in flue gas3When, auto-ignition combustion, it is ensured that CO concentration≤10mg/m in flue gas3。
2. filtering high-temperature flue gas dust separations
Flue gas after step 1. overheavy firing enters porous SiN ceramic filter 3, dust removal by filtration purification；Flue dust
Grain absorption dioxin-like compounds (Dioxin-like compounds) and the predecessor overwhelming majority are trapped；
Above-mentioned porous SiN ceramic filter 3 selects the nitridation silicon foam pottery of silicon nitride, aluminium oxide and yttrium oxide composition
Ceramic material manufactures.The mass percentage composition of three is silicon nitride：Aluminium oxide：Yttrium oxide=90:2:8.
3. waste heat boilers thermal energy recycles
Through the step 2. purified flue gas of dust removal by filtration, into countercurrent flow waste heat boiler 4, changed with working medium adverse current in boiler
Heat, the high temperature heat carried pass to boiler working substance；Flue gas own temperature is reduced to 690 DEG C, realizes the recycling of waste heat level-one；
Heat exchange between 4 flue gas of countercurrent flow waste heat boiler and boiler afterheat recycling working medium, using three bushing types
Countercurrent heat exchange method, heat-exchanger rig are made of the different two straight tubes suit configuration combination of several diameters, and flue gas walks central tube, waste heat
Recycling working medium walks annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow；
4. the combined formula heat exchange of heat pipe of flue gases drastically cools down
Flue gas from step 3. after waste heat boiler 4 recycles thermal energy enters the evaporator section of combined heat pipe exchanger 5 i.e.
Heating section exchanges heat with the liquid refrigerant in heat pipe, and the thermal energy conduction that flue gas is carried is to the liquid refrigerant in heat pipe；In heat pipe
By thermal evaporation, the gaseous working medium of generation, by intermediate span line, flows to cold liquid refrigerant by pressure difference small in heat pipe space
Solidifying section；In condensation segment, gaseous working medium discharges latent heat to low-temperature receiver (fluid outside heat pipe) and condenses, and the liquid refrigerant of condensation leans on imbibition
The capillarity of core, and evaporator section is flow back into, continue to repeat the above process；So in cycles, thermal energy flue gas carried
The cold working medium of entrance of waste heat boiler 4 is conducted to, for improving waste heat boiler inflow temperature；Or heating air, it is melted for copper scap
The inlet air temperature of furnace, primary reinforcement combustion furnace 1 and secondary reinforcement combustion furnace 2；Or output hot wind, hot water are sent outside, for other
User uses；Meanwhile flue gas own temperature is reduced to less than 200 DEG C in 2 seconds, and continue to be cooled to 90 DEG C with
Under, flow out combined heat pipe exchanger 5；Flue gas drastically cools down, while realizes fume afterheat secondary recovery；
The Combined type heat-pipe that the combined heat pipe exchanger 5 is made of the heat pipe filled with different working medium in pipe exchanges heat
Device.The working medium used in heat pipe is the sodium-potassium-sodium alloy and water of different ratio respectively.The proportioning of the sodium-potassium-sodium alloy is that sodium-potassium closes
The weight percent of potassium is 50%~70% in gold.
The combined heat pipe exchanger 5 is domestic waste incineration, primary reinforcement combustion furnace 1 and secondary reinforcement burn
Stove 2 provides high temperature combustion air, improves combustion position, improves efficiency of combustion, saves fuel or is provided for other hot winds user
>=350 DEG C of cleaning drying hot wind.
5. filter bag dedustings
Flue gas from step 4. combined heat pipe exchanger 5 enters bag dust collector 6 and filters, further removes smoke abatement；
6. acid gas removals
Flue gas from step 5. after 6 dust removal by filtration of bag dust collector enters acid gas removal system 7, removing vulcanization
Object and other acid gas contaminants：, such as H2S、NOx、CO、CO2、HCl；
Above-mentioned acid gas removal method uses NaOH aqueous solutions as acid gas removal agent, with Ca (OH)2It is water-soluble
Liquid is regenerative agent, after NaOH aqueous solutions fail, is passed through Ca (OH)2After aqueous solution regeneration, reuse.
7. activated carbon adsorptions
Flue gas from step 6. after removing sour gas enters activated carbon adsorber 8, through activated carbon adsorption, removing life
Various atmosphere pollutions in flue gas of refuse burning living, and foul smell taste is removed, after up to standard, discharged through air-introduced machine 9.
Waste heat recovery rate >=95%.In the tail gas that flue gas discharges after processing, atmosphere pollution whole project pollutant is equal
Less than People's Republic of China (PRC) standard GB18485-2014《Consumer waste incineration pollutant catabolic gene standard》In, " 4 house refuse of table
Limit value as defined in pollutant emission limit in incinerator discharge flue gas ".Wherein dioxin Air Pollutants Emissions≤
0.01ngTEQ/m3。
Claims (10)
1. a kind of processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution, it is characterised in that processing unit by
The equipment of order below connection is formed：Primary reinforcement combustion furnace (1), secondary reinforcement combustion furnace (2), porous SiN ceramic filtering
Device (3), countercurrent flow waste heat boiler (4), combined heat pipe exchanger (5), bag dust collector (6), acid gas removal system
(7), activated carbon adsorber (8) and air-introduced machine (9)；Wherein：
1. the primary reinforcement combustion furnace (1) and secondary reinforcement combustion furnace (2) described in configure automatic control using pipe-type burner
System processed is carried out automatically controlling for fuel flow rate, air mass flow, it is ensured that temperature >=1000 DEG C in burner；
2. the combined heat pipe exchanger (5) described in is changed by the Combined type heat-pipe that the heat pipe filled with different working medium in pipe forms
Hot device；The working medium used in heat pipe is the sodium-potassium-sodium alloy and water of different ratio respectively；In sodium-potassium-sodium alloy working medium, the weight of potassium
Percentage is 46%~89%；
The operation method of the processing unit includes the following steps：
1. flue gas overheavy firings
Flue gas from domestic waste incineration initially enters primary reinforcement combustion furnace (1), subsequently into secondary reinforcement combustion furnace
(2) overheavy firing；So that the combustable organic object carried in flue gas continues fully burning；Meanwhile in incineration process of domestic garbage
Generation dioxin-like compounds and predecessor are thermally decomposed；
2. filtering high-temperature flue gas dust separations
Flue gas after step 1. overheavy firing enters porous SiN ceramic filter (3), dust removal by filtration purification；Soot dust granule
Absorption dioxin-like compounds and the predecessor overwhelming majority are trapped；
3. waste heat boilers thermal energy recycles
Through the step 2. purified flue gas of dust removal by filtration, into countercurrent flow waste heat boiler (4), changed with working medium adverse current in boiler
Heat, the high temperature heat carried pass to boiler working substance；Flue gas own temperature is reduced to≤700 DEG C, realizes that waste heat level-one is returned
It receives；
4. the combined formula heat exchange of heat pipe of flue gases drastically cools down
Flue gas from step 3. after waste heat boiler (4) recycles thermal energy enters the evaporator section of combined heat pipe exchanger (5) i.e.
Heating section exchanges heat with the liquid refrigerant in heat pipe, and the thermal energy conduction that flue gas is carried is to the liquid refrigerant in heat pipe；In heat pipe
By thermal evaporation, the gaseous working medium of generation, by intermediate span line, flows to cold liquid refrigerant by pressure difference small in heat pipe space
Solidifying section；In condensation segment, gaseous working medium discharges latent heat to low-temperature receiver (fluid outside heat pipe) and condenses, and the liquid refrigerant of condensation leans on imbibition
The capillarity of core, and evaporator section is flow back into, continue to repeat the above process；So in cycles, thermal energy flue gas carried
The cold working medium of entrance of waste heat boiler (4) is conducted to, for improving waste heat boiler inflow temperature；Or heating air, for copper scap
The inlet air temperature of smelting furnace, primary reinforcement combustion furnace (1) and secondary reinforcement combustion furnace (2)；Or output hot wind, hot water are sent outside,
It is used for other users；Meanwhile flue gas own temperature is reduced to less than 200 DEG C in 2 seconds, and continue to be cooled to 90
Below DEG C, combined heat pipe exchanger (5) is flowed out；Flue gas drastically cools down, while realizes fume afterheat secondary recovery；
5. filter bag dedustings
Flue gas from step 4. combined heat pipe exchanger (5) enters bag dust collector (6) filtering, further removes smoke abatement；
6. acid gas removals
Flue gas from step 5. after bag dust collector (6) dust removal by filtration enters acid gas removal system (7), removing vulcanization
Object and other acid gas contaminants, such as H2S、NOx、CO、CO2、HCl；
7. activated carbon adsorptions
Flue gas from step 6. after removing sour gas enters activated carbon adsorber (8), through activated carbon adsorption, removing life
Various atmosphere pollutions in flue gas of refuse burning, and foul smell taste is removed, after up to standard, discharged through air-introduced machine (9).
2. the processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution according to claim 1, feature exist
In step, 1. the secondary reinforcement combustion furnace (2) is additionally provided with electronic striking control switch, realize fuel oil or fuel gas from
Dynamic igniting, it is ensured that after the CO in flue gas reaches setting concentration, i.e. ignition.
3. the processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution described in accordance with the claim 1, special
It levies and in the porous SiN ceramic filter (3) of step 2. middle use, is selecting the nitrogen of silicon nitride, aluminium oxide and yttrium oxide composition
SiClx foam ceramic material manufactures, and the mass percentage composition of three is silicon nitride：Aluminium oxide：Yttrium oxide=90:2:8.
4. the processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution according to claim 1, feature exist
In step 3. described in countercurrent flow waste heat boiler (4) flue gas and boiler afterheat recycling working medium between heat exchange use double-jacket tube
Formula countercurrent heat exchange method or three bushing type countercurrent heat exchange methods；Wherein：
The double-jacket tube formula countercurrent heat exchange method, heat-exchanger rig is by the different two straight tubes suit configuration combination structure of several diameters
Into flue gas walks central tube, and waste heat recovery working medium walks annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow；
The three bushing type countercurrent heat exchange methods, heat-exchanger rig are made of the different three straight tubes suit configuration of diameter, and flue gas is walked
Central tube and outer annular space, waste heat recovery working medium walk interior annular space pipe, and the two flow direction is on the contrary, realize countercurrent flow.
5. the processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution according to claim 1, feature exist
In the proportioning of the sodium-potassium-sodium alloy be potassium in sodium-potassium-sodium alloy weight percent be 60%~80%.
6. the processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution according to claim 1, feature exist
In step 4. described in combined heat pipe exchanger (5) for domestic waste incineration, primary reinforcement combustion furnace (1) and two level it is strong
Change combustion furnace (2) and high temperature combustion air is provided, improve combustion position, improve efficiency of combustion, save fuel or for other hot winds
User provides >=350 DEG C of cleaning drying hot wind.
7. the processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution described in accordance with the claim 1, special
Sign is the acid gas removal method of step 6., NaOH aqueous solutions is used as acid gas removal agent, with Ca (OH)2Water
Solution is regenerative agent, after NaOH aqueous solutions fail, is passed through Ca (OH)2After aqueous solution regeneration, reuse.
8. the processing unit of the dioxin from incineration flue gas of household garbage class atmosphere pollution according to claim 1, feature exist
In step 1. described in domestic waste incineration be circulating fluidized bed incinerator.
9. the processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution described in accordance with the claim 1, special
Sign is that the working medium of the countercurrent flow waste heat boiler (4) is water or low boiling point organic working medium.
10. the processing unit of dioxin from incineration flue gas of household garbage class atmosphere pollution described in accordance with the claim 1, special
Sign is countercurrent flow waste heat boiler (4) and the thermal energy of combined heat pipe exchanger (5) recycling, is directly made in the form of thermal energy
With or by recycling thermal energy be electric energy or mechanical energy.
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