CN103239975B - Treatment method of heat-treatment tail gas containing brominated flame retardant material - Google Patents
Treatment method of heat-treatment tail gas containing brominated flame retardant material Download PDFInfo
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- CN103239975B CN103239975B CN201310150898.6A CN201310150898A CN103239975B CN 103239975 B CN103239975 B CN 103239975B CN 201310150898 A CN201310150898 A CN 201310150898A CN 103239975 B CN103239975 B CN 103239975B
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- exhaust gas
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical class N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 33
- 238000010438 heat treatment Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 53
- 150000003839 salts Chemical class 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- -1 peroxy ions Chemical class 0.000 claims abstract description 7
- 239000003063 flame retardant Substances 0.000 claims description 35
- 230000031709 bromination Effects 0.000 claims description 28
- 238000005893 bromination reaction Methods 0.000 claims description 28
- 238000007669 thermal treatment Methods 0.000 claims description 22
- 238000003672 processing method Methods 0.000 claims description 18
- 239000003595 mist Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 238000000197 pyrolysis Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 18
- 230000006378 damage Effects 0.000 abstract description 14
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 3
- 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 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000000470 constituent Substances 0.000 description 11
- 238000010790 dilution Methods 0.000 description 10
- 239000012895 dilution Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 8
- 238000005695 dehalogenation reaction Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000002309 gasification Methods 0.000 description 6
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 5
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QARVLSVVCXYDNA-UHFFFAOYSA-N bromobenzene Chemical compound BrC1=CC=CC=C1 QARVLSVVCXYDNA-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- LJDGJCNHVGGOFW-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-(2-bromophenoxy)benzene Chemical compound BrC1=CC=CC=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br LJDGJCNHVGGOFW-UHFFFAOYSA-N 0.000 description 1
- VIHUMJGEWQPWOT-UHFFFAOYSA-N 1,2,3-tribromo-4-(3-bromophenoxy)benzene Chemical compound BrC1=CC=CC(OC=2C(=C(Br)C(Br)=CC=2)Br)=C1 VIHUMJGEWQPWOT-UHFFFAOYSA-N 0.000 description 1
- DEIGXXQKDWULML-UHFFFAOYSA-N 1,2,5,6,9,10-hexabromocyclododecane Chemical compound BrC1CCC(Br)C(Br)CCC(Br)C(Br)CCC1Br DEIGXXQKDWULML-UHFFFAOYSA-N 0.000 description 1
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- VADKRMSMGWJZCF-UHFFFAOYSA-N 2-bromophenol Chemical compound OC1=CC=CC=C1Br VADKRMSMGWJZCF-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010029350 Neurotoxicity Diseases 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 206010044221 Toxic encephalopathy Diseases 0.000 description 1
- JDZJVWAHZYIHFA-UHFFFAOYSA-N [Br].C1(=CC=CC=C1)O Chemical compound [Br].C1(=CC=CC=C1)O JDZJVWAHZYIHFA-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 231100000704 bioconcentration Toxicity 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010793 electronic waste Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 231100000025 genetic toxicology Toxicity 0.000 description 1
- 230000001738 genotoxic effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000007135 neurotoxicity Effects 0.000 description 1
- 231100000228 neurotoxicity Toxicity 0.000 description 1
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- 231100000614 poison Toxicity 0.000 description 1
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- 230000003335 steric effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a treatment method of a heat-treatment tail gas containing a brominated flame retardant material. The method comprises the following steps: heating a reactor and fusing the fused salt in the reactor; diluting the heat-treatment tail gas containing the brominated flame retardant material by utilizing air or oxygen; adjusting the gas intake volume concentration to reach 30% to 90%; and continuously leading the mixed gas into the reactor under the speed rate of 0.1L/min to 0.5L/min. After the reaction is finished, the destruction removal rate of the harmful component in the discharged tail gas can reach 80% to 100%. In the reactor, peroxy ions O2<2->, superoxy ions O<2-> and the like, which are generated by the reaction between the high-temperature fused salt and oxygen, can quickly destroy the brominated organic matter in the tail gas, thereby generating CO2, H2O, NaBr and the like without dioxin and other by-products. The method has the advantages of being rapid and complete in reaction, free of secondary pollution, easy to operate and the like.
Description
Technical field
The present invention relates to environmental protection technical field, especially a kind of processing method containing bromination flame retardant materials thermal treatment exhaust gas.
Background technology
Current global fire retardant consumption figure is about 2,000,000 tons, and wherein 65 ~ 70% for flame retardant plastics.Flame retardant plastics usually with PBDEs (PBDEs), PBBs (PBB) and tetrabromobisphenol A (TBBA) for fire retardant, be widely used in printed circuit board (PCB), plastics, coating, electric wire and resinae electronic component.Current China has entered household electrical appliance and has scrapped peak period, and annual learies is more than 5,000 ten thousand, and learies increases by 20% every year.Waste electronic and electric equipment is disassembled process and is produced a large amount of containing bromination flame retardant materials, as waste plastics, useless circuit board, electric wire etc.
Brominated flame retardant has good fire resistance, but in electronic waste process disposal process, easily spin off entered environment, constitutes a threat to health and ecological environment.PBDEs has neurotoxicity, particularly easily produces many bromos benzo bioxin (PBDD) and many bromos benzofuran (PBDF) of poisonous, carcinogenic, teratogenesis when polymer combustion, cracking.Buser in 1986 measures and finds that PBDEs pyrolysis at 510 ~ 630 DEG C can form PBDD and PBDF.It is generally acknowledged that the steric effect of tetrabromobisphenol A molecular structure can not produce Xiu Dai bioxin in processing procedure, but the Pyrolysis Experiment to tetrabromobisphenol A such as Wichmann, Thoma, Dumler shows, tetrabromobisphenol A can produce dioxins materials higher than 600 DEG C.Except dioxin pollutant, also can produce brominated organic matter and the hydrogen bromide such as bromobenzene, bromine phenol containing in bromination flame retardant materials heat treatment process.Barontini etc. have studied hydrogen bromide and brominated organic formation in wiring board heat treatment process, find that bromine is mainly present in gas-phase product with the form of hydrogen bromide and bromophenol.Grause etc. are studied paper substrate FR-1 type wiring board pyrolysis gas at different temperatures, when result shows 270-370 DEG C, fire retardant starts to decompose and discharges hydrogen bromide and bromination aromatic hydrocarbon, starts coking produce with bromize hydrogen gas simultaneously higher than 370 DEG C of resins.In addition, still there is simple and easy baking in some areas of China and disassemble the primitive operation mode that circuit board reclaims metal in components and parts or incineration disposal retrieving circuit board, electric wire, cause Heavy environmental pollution.Due to persistence, a series of Characteristics of Damage such as bioconcentration and genotoxicity of PBDEs, " Convention of Stockholm " in May, 2009 forbidding that passes a resolution in the 4th conference of contracting party comprise a series of brominated flame retardants such as tetrabromodiphenyl ether, penta-BDE, hexabromo diphenyl ether and seven dibromodiphenyl ethers.On April 25th, 2011, in " Convention of Stockholm " the 5th conference of contracting party that Geneva, Switzerland is held, representative potential environmental pollution that the recovery problem of brominated flame retardant is brought and environmental risk debate actively, and advise that various countries as early as possible will containing brominated flame retardant refuse, as waste plastics, useless foam, from waste stream, go-no-go is out and properly dispose.
Can produce a large amount of brominated organic matters containing in bromination flame retardant materials heat treatment process, processing procedure faces a dehalogenation purification difficult problem.The method of dehalogenation purification roughly can summarize globality dehalogenation and destructive dehalogenation two class.Dehalogenation is carried out, as supercritical CO under the prerequisite not destroying plastic or other material
2tBBA in extract and separate polybutylene terephthalate (PBT) (PBT) and HBCD.Plastics after dehalogenation can be used as the raw material of recycled product, and halogen also recoverable, but this technology is high to equipment requirement, and disengaging time is long, and operating cost is the key factor affecting this technical application.Compared with globality dehalogenation, alkali is added or basic anhydride carry out dehalogenation in the cracking such as plastics, burning process, have and remove acidic components ability preferably, but the membership that adds of basic component causes damage to a certain degree to the material such as metal, glass fibre reclaimed, and is unfavorable for pyrolysis residue subsequent treatment.Therefore, research and development are imperative containing the end purification techniques of bromination flame retardant materials thermal treatment exhaust gas.
To be Rockwell International company of the U.S. (existing Boeing) to take the lead in a kind of heat treatment technics of proposing in nineteen sixty-five, at first for coal gasification melting salt oxidation treatment technology.This technology is reaction medium with fuse salt, utilizes it to organic strong oxidizing property and high thermoconductivity, discarded object to be decomposed rapidly.In recent years, melting salt oxidation treatment technology is applied to organic waste, and especially the process of hazardous waste causes world's extensive concern.Li Fei etc. carry out waste printed circuit board gasification experiment in fused salt gasification furnace, investigate the impact of air equivalent comparison gas yield, gas heating value, efficiency of carbon con version and gasification efficiency, the delay of metal in fuse salt and distribution situation in gasification, and establish the reaction Kinetics Model of gasification reaction process.Korea S Yang etc. adopt two-part fuse salt stove process chloro-carbon solvent CCl
4, C
6h
5cl achieves very good effect.U.S. Hsu etc. is studied fused salt process ABS plastic, leather and active carbon.Due to medium and the catalytic action of fuse salt, melting salt oxidation treatment technology effectively can decompose debirs, and the sour gas discharged in course of reaction can be absorbed by fused salt, other inorganic matter and metal is trapped in fused salt simultaneously.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of processing method containing bromination flame retardant materials thermal treatment exhaust gas, simple and easy, efficient, non-secondary pollution.
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating 4 to 300 ~ 900 DEG C, fused salt 3 in reactor 4 is melted, air or oxygen 2 is utilized to dilute containing bromination flame retardant materials thermal treatment exhaust gas 1, adjustment charge volume concentration is 30 ~ 90%, mist is introduced reactor 4 continuously with the speed of 0.1 ~ 0.5L/min, after reaction terminates, in the tail gas of discharge, the destruction clearance of harmful constituent reaches 80 ~ 100%.
Described containing bromination flame retardant materials comprise in flame retardant plastics, useless circuit board, useless circuit board non-metal material, electric wire, brominated chemicals one or more.
Described heat treatment comprises pyrolysis, burning or baking.
Described fused salt 3 is the mixture of one or more in the carbonate of alkali metal and its nitrate, nitrite, villaumite, hydroxide.
The present invention compared with prior art has and is swift in response thoroughly, non-secondary pollution, is easy to the advantages such as operation.In the reactor 4, high-temperature molten salt and oxygen react and produce peroxide radical ion O
2 2-with super oxygen radical ion O
2-deng, the brominated organic matter in tail gas can be destroyed rapidly, generate CO
2, H
2o and NaBr etc., produce Wu accessory substances such as bioxin.
Accompanying drawing explanation
Accompanying drawing is for realizing device schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to accompanying drawing, realization the inventive system comprises reactor 4, is placed with fused salt 3 in reactor 4, and air or oxygen 2 dilutes introduces reactor 4 containing after bromination flame retardant materials thermal treatment exhaust gas 1, the top of reactor 4 is provided with exhaust emissions pipeline, and the bottom of reactor 4 is provided with waste sludge discharge pipeline.
Below in conjunction with embodiment, the present invention is described further, but content of the present invention is not limited only to content involved in embodiment.
Embodiment 1
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 900 DEG C, the fused salt Na in reactor
2cO
3fusing, utilizes Dilution air to give up circuit board pyrolytic tail gas, and adjustment charge volume concentration is 30%, and mist is introduced reactor continuously with the speed of 0.5L/min, and after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 80%.
Embodiment 2
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 900 DEG C, makes the fused salt K in reactor
2cO
3fusing, utilizes oxygen dilution to give up circuit board pyrolytic tail gas, and adjustment charge volume concentration is 90%, and mist introduces reactor continuously with the speed of 0.1L/min, and after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 100%.
Embodiment 3
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 750 DEG C, makes the fused salt Li in reactor
2cO
3fusing, utilize Dilution air Waste appliances plastic casing pyrolysis tail gas, adjustment charge volume concentration is 60%, and mist introduces reactor continuously with the speed of 0.4L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 85%.
Embodiment 4
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 750 DEG C, makes the fused salt 56Na in reactor
2cO
3-44K
2cO
3(mol%) melt, utilize oxygen dilution Waste appliances plastic casing pyrolysis tail gas, adjustment charge volume concentration is 70%, and mist is introduced reactor continuously with the speed of 0.4L/min, after reaction terminates, in the tail gas of discharge, the destruction of main harmful constituent and clearance (DRE) reach 90%.
Embodiment 5
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 650 DEG C, makes the fused salt 35Na in reactor
2cO
3-65NaCl(mol%) fusing, Dilution air is utilized to give up circuit board non-metal materials pyrolysis tail gas, adjustment charge volume concentration is 75%, mist is introduced reactor continuously with the speed of 0.3L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 90%.
Embodiment 6
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 400 DEG C, makes the fused salt 29.8Na in reactor
2cO
3-44.1Li
2cO
3-26.1K
2cO
3(mol%) melt, utilize oxygen dilution to give up circuit board non-metal materials pyrolysis tail gas, adjustment charge volume concentration is 75%, and mist is introduced reactor continuously with the speed of 0.3L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 95%.
Embodiment 7
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 300 DEG C, makes the fused salt 7.2Na in reactor
2cO
3-92.8NaOH(mol%) fusing, utilize Dilution air to give up circuit board incineration tail gas, adjustment charge volume concentration is 85%, and mist is introduced reactor continuously with the speed of 0.2L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 90%.
Embodiment 8
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 600 DEG C, makes the fused salt 18.1Na in reactor
2cO
3-43.3K
2cO
3-42.5KCl(mol%) fusing, utilize oxygen dilution to give up circuit board incineration tail gas, adjustment charge volume concentration is 85%, and mist is introduced reactor continuously with the speed of 0.5L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 80%.
Embodiment 9
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 350 DEG C, makes the fused salt 2K in reactor
2cO
3-98KNO
3(mol%) melt, utilize the brominated chemical incineration tail gas of Dilution air, adjustment charge volume concentration is 70%, and mist is introduced reactor continuously with the speed of 0.4L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 90%.
Embodiment 10
Containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, comprise the steps:
Reactor heating to 350 DEG C, makes the fused salt 1.8Na in reactor
2cO
3-98.2NaNO
3(mol%) melt, utilize the brominated chemical incineration tail gas of oxygen dilution, adjustment charge volume concentration is 80%, and mist is introduced reactor continuously with the speed of 0.3L/min, after reaction terminates, in the tail gas of discharge, the destruction of harmful constituent and clearance (DRE) reach 90%.
Claims (4)
1., containing a processing method for bromination flame retardant materials thermal treatment exhaust gas, it is characterized in that, comprise the steps:
Reactor heating (4) is to 300 ~ 900 DEG C, fused salt (3) in reactor (4) is melted, air or oxygen (2) is utilized to dilute containing bromination flame retardant materials thermal treatment exhaust gas (1), adjustment charge volume concentration is 30 ~ 90%, and mist is introduced reactor (4) continuously with the speed of 0.1 ~ 0.5L/min.
2. a kind of processing method containing bromination flame retardant materials thermal treatment exhaust gas according to claim 1, is characterized in that: described containing bromination flame retardant materials comprise in flame retardant plastics, useless circuit board, useless circuit board non-metal material, electric wire, brominated chemicals one or more.
3. a kind of processing method containing bromination flame retardant materials thermal treatment exhaust gas according to claim 1, is characterized in that: described heat treatment comprises pyrolysis, burning or baking.
4. a kind of processing method containing bromination flame retardant materials thermal treatment exhaust gas according to claim 1, is characterized in that: the mixture of one or more in the carbonate that described fused salt (3) is alkali metal and its nitrate, nitrite, villaumite, hydroxide.
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| CN201310150898.6A CN103239975B (en) | 2013-04-26 | 2013-04-26 | Treatment method of heat-treatment tail gas containing brominated flame retardant material |
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| CN105964099A (en) * | 2016-06-07 | 2016-09-28 | 刘杰 | Method and device for treating dioxin contained in incineration exhaust gas |
| CN106237800A (en) * | 2016-09-05 | 2016-12-21 | 上海理工大学 | Volatile organic compounds melting salt oxidation system |
| CN108996524B (en) * | 2018-09-09 | 2021-05-11 | 寿光富康制药有限公司 | Method for preparing bromide salt from bromine-containing waste |
| CN114288837B (en) * | 2021-12-13 | 2022-09-16 | 中国科学院上海应用物理研究所 | Chemical decarburization device and chemical decarburization method for halide molten salt |
| CN114870590A (en) * | 2022-05-05 | 2022-08-09 | 苏州清咨威特环保科技有限公司 | Device for oxidation treatment of halogenated organic waste gas |
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| NL8105225A (en) * | 1981-11-18 | 1983-06-16 | Shell Int Research | COMPOSITION AND METHOD FOR REMOVING POLLUTANT POLLUTANTS |
| KR100830843B1 (en) * | 2007-01-19 | 2008-05-20 | 한국원자력연구원 | Process for treatment of halogenate volatile organic compounds using akaline molten salt |
| NO330584B1 (en) * | 2009-05-28 | 2011-05-23 | Univ For Miljo Og Biovitenskap Inst For Mat Realfag Og Teknologi | CO2 capture in salt melts |
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