CN106391663B - A kind of flying dust harmless treatment resource recycling device and processing method - Google Patents
A kind of flying dust harmless treatment resource recycling device and processing method Download PDFInfo
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- CN106391663B CN106391663B CN201610958780.XA CN201610958780A CN106391663B CN 106391663 B CN106391663 B CN 106391663B CN 201610958780 A CN201610958780 A CN 201610958780A CN 106391663 B CN106391663 B CN 106391663B
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- 239000000428 dust Substances 0.000 title claims abstract description 99
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- 238000003672 processing method Methods 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 152
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 70
- 238000005406 washing Methods 0.000 claims abstract description 58
- 150000003839 salts Chemical class 0.000 claims abstract description 48
- 239000000706 filtrate Substances 0.000 claims abstract description 42
- 238000004821 distillation Methods 0.000 claims abstract description 41
- 239000012528 membrane Substances 0.000 claims abstract description 38
- 238000006298 dechlorination reaction Methods 0.000 claims abstract description 31
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 24
- 238000002425 crystallisation Methods 0.000 claims abstract description 23
- 230000008025 crystallization Effects 0.000 claims abstract description 23
- 239000010881 fly ash Substances 0.000 claims abstract description 20
- 239000013078 crystal Substances 0.000 claims abstract description 19
- 231100000614 poison Toxicity 0.000 claims abstract description 19
- 238000010828 elution Methods 0.000 claims abstract description 15
- 239000006228 supernatant Substances 0.000 claims abstract description 13
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 9
- 239000012141 concentrate Substances 0.000 claims abstract description 9
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 57
- 239000010802 sludge Substances 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 31
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 29
- 239000004744 fabric Substances 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 26
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 23
- 239000011780 sodium chloride Substances 0.000 claims description 23
- 239000002956 ash Substances 0.000 claims description 20
- 239000000779 smoke Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 16
- 238000001704 evaporation Methods 0.000 claims description 15
- 230000008020 evaporation Effects 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000001802 infusion Methods 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 11
- 230000001112 coagulating effect Effects 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000000967 suction filtration Methods 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000693 micelle Substances 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 238000006482 condensation reaction Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 5
- 231100000252 nontoxic Toxicity 0.000 claims description 5
- 230000003000 nontoxic effect Effects 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000004566 building material Substances 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 239000004035 construction material Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 238000005188 flotation Methods 0.000 claims description 4
- 238000002386 leaching Methods 0.000 claims description 4
- 230000001617 migratory effect Effects 0.000 claims description 4
- 239000012452 mother liquor Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000010801 sewage sludge Substances 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 239000003643 water by type Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 206010001497 Agitation Diseases 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 239000008139 complexing agent Substances 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 239000008236 heating water Substances 0.000 claims description 3
- 230000002045 lasting effect Effects 0.000 claims description 3
- 239000006210 lotion Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000002574 poison Substances 0.000 claims 2
- 238000005345 coagulation Methods 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 239000000110 cooling liquid Substances 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 239000003440 toxic substance Substances 0.000 abstract description 17
- 150000002500 ions Chemical class 0.000 abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 27
- 239000000243 solution Substances 0.000 description 18
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 239000007789 gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 239000010813 municipal solid waste Substances 0.000 description 6
- 239000007790 solid phase Substances 0.000 description 6
- 238000012937 correction Methods 0.000 description 4
- 238000004506 ultrasonic cleaning Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000012954 risk control Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009938 salting Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OTEKOJQFKOIXMU-UHFFFAOYSA-N 1,4-bis(trichloromethyl)benzene Chemical compound ClC(Cl)(Cl)C1=CC=C(C(Cl)(Cl)Cl)C=C1 OTEKOJQFKOIXMU-UHFFFAOYSA-N 0.000 description 1
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- -1 pharmacy Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of flying dust harmless treatment resource recycling device and processing methods, it includes sequentially connected solid catalysis dechlorination removing toxic substances removal bioxin system, incineration of refuse flyash tertiary effluent elution salt system, removes removing heavy metals system, membrane distillation concentration system and salt crystal system；Solid catalysis dechlorination removing toxic substances removal bioxin system removes flying dust Zhong bioxin；Incineration of refuse flyash tertiary effluent elutes salt system and removes a large amount of salt in the flying dust for eliminating bioxin, also has part heavy-metal residual in the tertiary effluent washing filtrate after washing；It goes removing heavy metals system by a large amount of calcium ions and magnesium ions contained in tertiary effluent washing filtrate and a small amount of removal of heavy metal ions, obtains the supernatant after removing heavy metals；Supernatant is carried out distillation production water reuse by membrane distillation concentration system, and generates concentrate；Concentrate is evaporated crystallization by salt crystal system, obtains aqueous 7% crystal salt and condensed water.The present invention can be by flying dust harmless treatment, and can realize recycling.
Description
Technical field：
The present invention relates to garbage flying ash process field, more particularly to a kind of flying dust harmless treatment recycling is again
It makes profits and uses device and processing method.
Background technology：
Flying dust is the residue of waste incineration, the carcinogenic substance " bioxin that waste incineration generates " 90% all in flying dust.Not
The flying dust of cured processing is dealt with improperly, wherein a large amount of heavy metal is Ji bioxin can cause serious contamination accident, harm to occupy
People's health.Before, the whole nation only has several cities and is carrying out incineration of refuse flyash processing.The processing cost is high for one side flying dust.
On the other hand due to irregular marketing, the problem of supervision is not in place, Cun Evil sexual competitions, " flying dust " is made be in " disorderly winged " state.
Flying dust cannot obtain safe disposal, will be environmentally hazardous very big hidden danger.
Invention content：
The purpose of the present invention is in view of the deficiencies of the prior art, provide a kind of flying dust harmless treatment recycling regeneration
Using device, while a kind of flying dust harmless treatment resource recycling method is provided, can be by flying dust harmless treatment, and it can
Realize recycling.
The technology solution of the present invention is as follows：
A kind of flying dust harmless treatment resource recycling device, it includes sequentially connected solid catalysis dechlorination removing toxic substances
Removal bioxin system, removes removing heavy metals system, membrane distillation concentration system and salt at incineration of refuse flyash tertiary effluent elution salt system
Crystal system；The solid catalysis dechlorination removing toxic substances removal bioxin system utilizes mineral catalysis agent, induces bioxin dechlorination, will fly
Grey Zhong bioxin removal, phenyl parent generates the nontoxic poly- product of height by condensation reaction after dechlorination；The rubbish is burnt
It burns flying dust tertiary effluent elution salt system to take off a large amount of salt washing in the flying dust for eliminating bioxin, after washing
There is heavy metal ion residual in part in tertiary effluent washing filtrate；It is described to go removing heavy metals system that contain in tertiary effluent washing filtrate
A large amount of calcium ions and magnesium ions and a small amount of removal of heavy metal ions, obtain the supernatant after removing heavy metals；The membrane distillation concentration system will
Supernatant carries out distillation production water reuse, and generates concentrate；Concentrate is evaporated crystallization by the salt crystal system, is tied
Brilliant salt and condensed water carry out reuse.
Preferably, the solid catalysis dechlorination removing toxic substances removal bioxin system includes ash cellar, the flying dust in ash cellar passes through
Flying dust transport vehicle is transported and is conveyed, and the discharge port of ash cellar is connected to feed bin, and the discharge port of the feed bin is connected to thermal decomposition furnace, and
Thermal decomposition furnace is connected with nitrogen supplement tank, makes in thermal decomposition furnace in the sealed environment in nitrogen protection gas；The heat point
The upper end of solution stove is connected with band water jacket cooling pipe a, and the band water jacket cooling pipe a is connected with cooling dust remover, described cold
But deduster top, which is connected with, is connected with water jacket cooling pipe b, the band water jacket cooling pipe b with strap pulse dust collector a；
The lower end of the thermal decomposition furnace is connected with charging line, and the lower end of the charging line is connected to the charging of helical feed cooler
Mouthful, the outlet of the helical feed cooler is connected with pipeline a, and pipeline a is connected with strap pulse dust collector b；The spiral shell
The discharge gate of rotation conveying cooler is connected with pipeline b.
Preferably, the incineration of refuse flyash tertiary effluent elution salt system includes sequentially connected tertiary effluent salt elution dress
Set, first order washing desalter includes that agitator tank a and the first vacuum belt connect with agitator tank a filter machine, agitator tank a and
Solid catalysis dechlorination removing toxic substances removal bioxin system is connected, and the discharge end that the first vacuum belt filters machine is connected to agitator tank b,
Second vacuum belt of second level washing desalter filters machine and is connected with agitator tank b, and the second vacuum belt filters going out for machine
Material end is connected to agitator tank c, and the third vacuum belt of third level washing desalter filters machine and is connected with agitator tank c, third
The discharge end that vacuum belt filters machine is connected to storage mud tank.
Preferably, first vacuum belt filters machine, the second vacuum belt filters machine and third vacuum belt filters
The structure of machine is identical, and vacuum belt filters and is equipped with vacuum tank in machine, and the conveyer belt that vacuum belt filters machine is filter cloth, and filter cloth covers
Lid on the vacuum box, uses microporous barrier membrane on the filter cloth；Be additionally provided in the vacuum belt suction filtration machine filter cloth tensioning apparatus,
Filter cloth correction device and ultrasonic cleaning equipment.
Preferably, described go removing heavy metals system to be connected to the first vacuum belt suction filtration machine, the first vacuum belt filters
Smoke filtrate of machine is the washing filtrate after three-level washing, smoke filtrate enter it is described go removing heavy metals system, it is described
It includes stirring pool a, stirring pool b and the coagulative precipitation tank being connected with each other to go removing heavy metals system, is gone in stirring pool a and stirring pool b
Removing heavy metals ion, stirring pool b are connected to sludge collecting pit a, and sludge collecting pit a is connected to filter press a；The coagulative precipitation tank
The interior a large amount of calcium ions and magnesium ions of removal, coagulative precipitation tank are connected to sludge collecting pit b, and sludge collecting pit b is connected to filter press b；Press filtration
Machine b is connect with the storage mud tank.
Preferably, the input end of the membrane distillation concentration system be connected to the filter press b by pipeline go out liquid
Mouthful；The discharge end of membrane distillation concentration system is saline solns, and saline solns enter turbidity removal device, and the saline solns in turbidity removal device pass through
Feed liquid is transported to evaporation and crystallization system by infusion pump.
Preferably, the outlet end of the evaporation and crystallization system is connected to filtered water tank, the discharge end of evaporation and crystallization system is
Aqueous 7% crystal salt.
Preferably, the filtered water tank is connected to third vacuum belt by pipeline a filters machine, third vacuum belt filters
Machine is connected to agitator tank c by pipeline b.
Preferably, further include external filtered water tank, external filtered water tank by pipeline and agitator tank a, agitator tank b and stirs respectively
Mix tank c connections.
Harmless treatment and recycling are carried out to flying dust using a kind of flying dust harmless treatment resource recycling device
The method of regeneration, it is characterised in that：Include the following steps：
(1) flying dust is transported by flying dust transport vehicle and is transported in ash cellar, and the flying dust in ash cellar is quantitatively transported to solid phase and urges
Change in dechlorination removing toxic substances removal bioxin system, in removal bioxin system is detoxified in solid catalysis dechlorination, flying dust enters solid phase and urges
In the feed bin for changing dechlorination removing toxic substances removal bioxin system, while mineral catalysis agent being added in feed bin, then flying dust and mineral catalysis
Agent quantitatively enters thermal decomposition furnace and carries out bioxin dechlorination, and phenyl parent generates nontoxic height by condensation reaction and gathers after dechlorination
Product removes flying dust Zhong bioxin in this way；
(2) fly ash carry for eliminating bioxin enters in incineration of refuse flyash tertiary effluent elution salt system, initially enters and stirs
It mixes in tank a, solid-liquid mass ratio 1 is then added into agitator tank by external filtered water tank：After 4 water is stirred 30min, once
Stirring flying dust slurries are pumped into the first vacuum belt and filter machine progress first time separation of solid and liquid, wherein primary aqueous flying dust enters stirring
Tank b, a smoke filtrate, which enters, goes removing heavy metals system；Solid-liquid mass ratio 1 is added by external filtered water tank in agitator tank b：4
Water is stirred 30min, and secondary agitation flying dust slurries are pumped into the second vacuum belt and filter second of separation of solid and liquid of machine progress, wherein
Secondary aqueous flying dust enters agitator tank c, and secondary smoke filtrate enters agitator tank a and washes water for agitator tank a；In agitator tank c
Solid-liquid mass ratio 1 is added by external filtered water tank：4 water is stirred 30min, and triple mixing flying dust slurries are pumped into third vacuum
Belt filters machine and carries out third time separation of solid and liquid, and third time is aqueous to be less than 50% and flying dust outward transport conveying of the saliferous less than 1%
To storage mud tank, smoke filtrate return agitator tank b is for agitator tank b washing waters three times；Third vacuum belt filters machine and needs simultaneously
Internal filtered water tank, which draws water, carries out filter cloth cleaning, the cleaning waste liquid after cleaning, and a part is conveyed into agitator tank c and is stirred for three-level washing
The water mixed, a part are complemented at external filtered water tank after filter filters and continue reuse；Storage mud tank after washing
Flying dust in also have part heavy-metal residual, there are two main classes：One kind is both sexes heavy metal, including lead, zinc, in cement gel body
System, which exists, leaches risk；Another kind of is other heavy metals, including copper, nickel, cadmium, chromium etc., is relatively stablized in cement gel system.For
It reduces heavy metal and enters the migratory activity after building materials, using chemical stabilization technology, stabilizer is added to the flying dust of storage mud tank
In make heavy metal inerting, with reduce leach heavy metal content, make to be used as the construction material of raw material by flying dust while meeting ring
Border risk control standard and control of product quality standard.
(3) smoke filtrate is exactly the washing filtrate after three-level is washed, and washing filtrate enters washing water tank, institute
The water for stating washing water tank is pumped into removing heavy metals system is gone, due to containing a large amount of calcium ions and magnesium ions and a small amount of heavy metal in washing filtrate
Ion, washing filtrate are introduced into stirring pool a, while being added after heavy metal complexing agent is pre-formed small micelle and flowing automatically in stirring pool a
PAC is added to stirring pool b, in stirring pool b to be stirred to react, is further formed big micelle, it is aqueous heavy after carrying out preliminary mud-water separation
Metal sludge enters sludge collecting pit a, and the sludge in sludge collecting pit a is separated by solid-liquid separation by filter press a, heavy metal sewage sludge outward transport
Make dangerous waste processing；Supernatant in stirring pool b enters coagulative precipitation tank, sulfuric acid is added by medicine system, sodium carbonate is mixed
Retrogradation is formed sediment, and PAC is added and is stirred to react, and after being further formed the preliminary mud-water separation of big micelle progress, aqueous calcium and magnesium sludge enters dirt
Sludge in mud collecting pit b, sludge collecting pit b is separated by solid-liquid separation by filter press b, and calcium and magnesium sludge, which enters, stores up mud tank, in filter press b
Supernatant by pipe-line mixer be added activating agent, further gone into flotation tank it is turbid, go it is turbid after saline solns enter film
Distallation systm.
(4) water lotion after removing heavy metals is handled using membrane distillation concentration system, and saline solns are pumped into heating water
Case heats solution, and after saline solns are heated to 62 DEG C using steam using volumetric heat exchanger, saline solns enter hydrothermal solution
Water tank；Solution is pumped into the membrane distillation system being superimposed with high energy membrane component array from hydrothermal solution water tank and carries out distillation production water；Contain
Salting liquid is cooled down after membrane distillation system, can be recycled partial heat by heat pump, reduces required steam consumption, and maintain
62 DEG C of hydrothermal solution is into film temperature；Simultaneously heat pump also coolant liquid is cooled down, then by frequency conversion cooling tower be cooled to required coolant liquid into
30 DEG C of temperature of mouth；The distilled water of output enters the utilization of incineration of refuse flyash tertiary effluent salt elution system circulation, reduces washing and is disappeared
The water of consumption；As the moisture in saline solns is reduced, then solution concentration is increasing in hydrothermal solution water tank, reaches and is crystallized into salt
After the saliferous rate control of system requires；It opens infusion pump and dope is transported to evaporation and crystallization system, simultaneous quantitative carries out fluid infusion, reaches
It is balanced to liquid fluid infusion is gone out；After membrane distillation system operation 20h, in order to maintain the lasting hydrophobicity of part film, backwashed,
Backwashing time can be controlled according to practical feed liquid situation in 2~4h.
(5) dope of membrane distillation concentration system heats after preheater tentatively heats up into the evaporation of salt crystal system
Device is pumped into evaporative crystallization in crystallizing evaporator through forced circulation；The indirect steam that evaporation generates is compressed by compressor,
Indirect steam temperature is increased 15-20 DEG C, heat exchanger is come back to as secondary heat source and provides a system to heat source, weigh to greatest extent
Steam latent heat is utilized again；Feed liquid is concentrated into saliferous rate 50-60%, salt crystallization is precipitated in cooling, and the concentrate containing crystallization goes vacuum belt
Formula is dehydrated, and dehydration mother liquor returns vapo(u)rization system, aqueous 7% crystal salt pack outward transport；Crystallizing evaporator condensed water returns to water wash system
It is recycled as washing supplement water.
The beneficial effects of the present invention are：
Efficient, low energy consumption, dechlorination product with detoxifying for the solid catalysis dechlorination removing toxic substances removal bioxin system of the present invention
It is the advantages that safe, with the obvious advantage in investment and operating cost, it is the flying ash bioxin Detoxified treatment to tally with the national condition
Possible technique.
The incineration of refuse flyash tertiary effluent elution salt system of the present invention filters machine to eliminating bioxin using vacuum belt
Flying dust be carried out continuously and be separated by solid-liquid separation three times, third time is aqueous is less than 50% and flying dust of the saliferous less than 1% transport outward, take out three times
Filtrate returns to agitator tank b and washes water for agitator tank b；Secondary smoke filtrate enters agitator tank a and washes water for agitator tank a；
Smoke filtrate, which enters, goes removing heavy metals system.The internal filtered water tank of third vacuum belt suction filtration machine needs, which draws water, simultaneously carries out filter cloth
Cleaning, the cleaning waste liquid after cleaning, a part are conveyed into waters of the agitator tank c for three-level washing stirring, and a part was passed through
It is complemented at external filtered water tank after filter filtering and continues reuse；There is part heavy metal in the flying dust of storage mud tank after washing
Residual, there are two main classes：One kind is both sexes heavy metal, including lead, zinc, exists in cement gel system and leaches risk；It is another kind of
It is other heavy metals, including copper, nickel, cadmium, chromium etc., relatively stablizes in cement gel system.Enter building materials to reduce heavy metal
Migratory activity afterwards, using chemical stabilization technology, stabilizer, which is added in the flying dust of storage mud tank, makes heavy metal inerting, to reduce
The content for leaching heavy metal, makes to be used as the construction material of raw material by flying dust while meeting environmental risk control standard (HJ/T
299-2007 and GB 8978-1996) and control of product quality standard (the 8th chapters of GB30760-2014 " can leach in clinker
Content of beary metal limit value requirement ").
The present invention go removing heavy metals system, due to incineration of refuse flyash contain a large amount of calcium ions and magnesium ions and a small amount of heavy metal from
Son, the washing filtrate after three-level is washed are exactly a smoke filtrate, washing filtrate successively heavy-metal ion removal and calcium and magnesium from
Son, aqueous heavy metal sewage sludge enter sludge collecting pit a, and the sludge in sludge collecting pit a is separated by solid-liquid separation by filter press a, a huge sum of money
Belong to and operates dangerous waste processing outside sludge；Aqueous calcium and magnesium sludge enters sludge collecting pit b, and the sludge in sludge collecting pit b passes through press filtration
Machine b is separated by solid-liquid separation, and calcium and magnesium sludge enters storage mud tank, and the supernatant in filter press b is added activating agent by pipe-line mixer, enters
Flotation tank further go it is turbid, go it is turbid after saline solns enter membrane distillation system.
The membrane distillation concentration system of the present invention is the one of low temperature film distillation technology using film distillation technology is exchanged in immersion
Kind, it is the innovation based on traditional membrane separation technique.Since low temperature film distillation technology is in separation process, only vapor can penetrate
Hydrophobic fenestra, therefore generated water quality is very pure, water outlet is Ke Xunhuanliyong, and salinity and concentration polarization are to membrane distillation shadow
It rings less, can be used for not knowing the high-salt wastewater of solubility, the aqueous solution of high concentration inorganic salts can be handled, it might even be possible to will be molten
Liquid is concentrated to saturation state.Theoretically membrane distillation desalination producing water ratio can reach 100%, this is existing all desalination treatment technology institutes
It is inaccessiable.The technical equipment is suitable for organic chemical industry, fine chemistry industry, petrochemical industry, dyestuff, pharmacy, pesticide, prints and dyes, makes
A variety of high concentrations of the industries such as paper, high salinity, toxicity is big, bio-refractory organic wastewater degraded processing.
The feed liquid of output in membrane distillation concentration system is concentrated into saliferous rate 50-60% by the salt crystal system of the present invention, is dropped
Salt crystallization is precipitated in temperature, and the concentrate containing crystallization goes vacuum belt to be dehydrated, and dehydration mother liquor returns vapo(u)rization system, aqueous 7% crystal salt pack
Outward transport.Crystallizing evaporator condensed water returns to water wash system and is recycled as washing supplement water.
Description of the drawings：
Following further describes the present invention with reference to the drawings：
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of the solid catalysis dechlorination removing toxic substances removal bioxin system of the present invention；
Fig. 3 is that the vacuum belt of the present invention filters the structural schematic diagram of machine；
Symbol description in figure：I-solid catalysis dechlorination removing toxic substances removal bioxin system；II-incineration of refuse flyash tertiary effluent
Elute salt system；III-goes removing heavy metals system；IV-membrane distillation concentration system；V-salt crystal system；1-ash cellar；2-fly
Grey transport vehicle；3-feed bins；4-thermal decomposition furnaces；5-nitrogen supplement tank；6-band water jacket cooling pipe a；7-cooling dust removers；
8-band water jacket cooling pipe b；9-strap pulse dust collector a；10-charging lines；11-helical feed coolers；12-pipes
Road a；13-tape pulse deduster b；14-pipeline b；15-motors；16-conveying augers；17-water tanks；18-water inlet lines；
19-water return pipelines；20-agitator tank a；21-the first vacuum belt filters machine；22-agitator tank b；23-the second vacuum belt
Suction filtration machine；24-agitator tank c；25-third vacuum belts filter machine；26-vacuum tanks；27-filter clothes；28-filter clothes tensioning dress
It sets；29-filter cloth correction devices；30-ultrasonic cleaning equipments；31-control cabinets；32-water receiving tanks；33-stirring pool a；34—
Stirring pool b；35-coagulative precipitation tanks；36-sludge collecting pit a；37-filter press a；38-sludge collecting pit b；39-filter presses
b；40-storage mud tanks；41-turbidity removal devices；42-filtered water tanks；43-external filtered water tanks；44-washing water tanks.
Specific implementation mode：
See attached drawing 1~3, a kind of flying dust harmless treatment resource recycling device, it includes sequentially connected solid phase
Catalysis dechlorination removing toxic substances removal bioxin system I, incineration of refuse flyash tertiary effluent elution salt system II, go removing heavy metals system III,
Membrane distillation concentration system IV and salt crystal system V；The solid catalysis dechlorination removing toxic substances removal bioxin system utilizes mineral catalysis
Agent induces bioxin dechlorination, flying dust Zhong bioxin is removed, phenyl parent is generated nontoxic by condensation reaction after dechlorination
The poly- product of height；The incineration of refuse flyash tertiary effluent elutes salt system by a large amount of salt water in the flying dust for eliminating bioxin
It washes away, also has heavy metal ion residual in part in the tertiary effluent washing filtrate after washing；It is described to go removing heavy metals system
By a large amount of calcium ions and magnesium ions contained in tertiary effluent washing filtrate and a small amount of removal of heavy metal ions, the supernatant after removing heavy metals is obtained
Liquid；Supernatant is carried out distillation production water reuse by the membrane distillation concentration system, and generates concentrate；The salt crystal system will be dense
Contracting liquid is evaporated crystallization, obtains crystal salt and condensed water carries out reuse.
The solid catalysis dechlorination removing toxic substances removal bioxin system includes ash cellar 1, and the flying dust in ash cellar is transported by flying dust
Vehicle 2 is transported and is conveyed, and the discharge port of ash cellar is connected to feed bin 3, and the steel platform for manually using is equipped on the mill floor,
Feed bin band hand stock mouth, uses, feed bin is hopper construction in case initial stage detection is quantitative.
The discharge port of the feed bin is connected to thermal decomposition furnace 4, and thermal decomposition furnace is connected with nitrogen supplement tank 5, makes heat point
It solves in stove in the sealed environment in nitrogen protection gas；The effect in nitrogen as protective gas is needed when thermal decomposition furnace works
Lower work, the burner hearth material of thermal decomposition furnace are stainless steel, and dischargeable capacity is more than 0.8m in burner hearth3.Thermal decomposition furnace highest work temperature
Degree is 450 DEG C, and the furnace body skin temperature of thermal decomposition furnace is less than 20 DEG C, and when work is safe and reliable.
The upper end of the thermal decomposition furnace is connected with band water jacket cooling pipe a6, the band water jacket cooling pipe a and is removed with cooling
Dirt device 7 is connected, and the cooling dust remover top is connected with band water jacket cooling pipe b8, the band water jacket cooling pipe b and cloth
Tape pulse deduster a9 is connected.
The lower end of the thermal decomposition furnace is connected with charging line 10, and it is cold that the lower end of the charging line is connected to helical feed
But the outlet of the feed inlet of device 11, the helical feed cooler is connected with pipeline a12, pipeline a and strap pulse dust collector
B13 is connected；The discharge gate of the helical feed cooler is connected with pipeline b14.
The nitrogen supplement tank, cooling dust remover, strap pulse dust collector a and strap pulse dust collector b pass through branch respectively
Frame is mounted on mill floor.
The helical feed cooler includes motor 15, conveying auger 16 and water tank 17, and motor passes through shaft coupling and conveying
Auger links together, and conveying auger passes through water tank and connect with tank seal, and water tank is coated on water tank on the outside of conveying auger,
Water inlet line 18 and water return pipeline 19 are connected on water tank, water inlet line is mounted on the left bottom of water tank, water return pipeline installation
At the top of the left and right sides of water tank, water inlet line 18 and water return pipeline 19 respectively connected cooling water flow in pond, pass through 18 He of water inlet line
Water return pipeline 19 can make the water flowing in water tank, to the dust cooling in conveying auger.
The method that dioxin device handles garbage flying ash is removed using garbage flying ash, is included the following steps：
A, garbage flying ash powder is conveyed into bucket shape feed bin, feeding is generally carried out by conveying device, but feed bin band is artificial
Charge door is fed by steel platform, is used in case initial stage detection is quantitative.
B, nitrogen supplement tank is opened, the supplying nitrogen toward thermal decomposition furnace in, keeps thermal decomposition furnace interior with nitrogen as protective gas,
Nitrogen consumption is 20m3/ h ensures normal reaction in thermal decomposition furnace, makes normal work in thermal decomposition furnace.
C, the former material materials quantitative in feed bin is sent into thermal decomposition furnace, the garbage flying ash powder in thermal decomposition furnace and entrance thermal decomposition
After stove, and dynamic Decomposition 1 hour at 300 DEG C~400 DEG C.
D, the tail gas decomposed through thermal decomposition furnace enters cooling dust remover through band water jacket cooling pipe a, is decomposed through thermal decomposition furnace
Powder be conveyed into helical feed cooler through charging line, such helical feed cooler is also in the environment of nitrogen protector
Work.
E, the tail gas after cooling dust remover by band water jacket cooling pipe b be conveyed into strap pulse dust collector a into
Row gathers dust, and tail gas is discharged after strap pulse dust collector a and after exhaust temperature is less than 130 DEG C.
F, helical feed cooler is cooling by powder and conveys, cooling to be intake by water inlet line, is returned by water return pipeline
Water, water consumption is 10 tons per hour, and water can be recycled, and convenient for cooling, the tail gas of generation enters cloth tape pulse by pipeline a
Deduster b gathers dust, and after powder is conveyed into discharge gate, and the cool rear temperature of powder is less than 80 DEG C, is discharged and unloads by pipeline b
Material.
Former material materials quantitative be sent into thermal decomposition furnace conveying capacity, in thermal decomposition furnace the nitrogen amount of supplying nitrogen, through cloth dai channel
Rush the exhaust temperature after deduster a, powder it is cool but after temperature and thermal decomposition furnace in temperature and thermal decomposition time all by PLC from
Dynamic control, is not required to manual operation, high degree of automation.
It is separately installed with online oxygen content on the band water jacket cooling pipe a, on band water jacket cooling pipe b and on pipeline a
Detection device, online oxygen content detector can detect pressure and can alarm, and pass through when pressure is beyond the numerical value set
Alarm can judge and overhaul convenient for people, ensure whole equipment normal operation.
The incineration of refuse flyash tertiary effluent elution salt system includes sequentially connected tertiary effluent salt elution device, the first order
Washing desalter includes that agitator tank a20 and the first vacuum belt being connect with agitator tank a filter machine 21, agitator tank a and solid phase
Catalysis dechlorination removing toxic substances removal bioxin system is connected, and the discharge end that the first vacuum belt filters machine is connected to agitator tank b22, the
Second vacuum belt of two level washing desalter filters machine 23 and is connected with agitator tank b, and the second vacuum belt filters going out for machine
Material end is connected to agitator tank c24, and the third vacuum belt of third level washing desalter filters machine 25 and is connected with agitator tank c,
The discharge end that third vacuum belt filters machine is connected to storage mud tank.
First vacuum belt filters machine, the second vacuum belt filters machine and third vacuum belt filters the structure phase of machine
Together, vacuum belt filters and is equipped with vacuum tank 26 in machine, and the conveyer belt that vacuum belt filters machine is filter cloth 27, and filter cloth is covered in very
On empty van, microporous barrier membrane is used on the filter cloth；It is additionally provided with filter cloth tensioning apparatus 28, filter cloth in the vacuum belt suction filtration machine
Deviation correcting device 29 and ultrasonic cleaning equipment 30.
Flying dust and water on filter cloth are mixed, and filter cloth is constantly run, and pass through the vacuum pumping of vacuum suction apparatus
Suction detaches the aqueous solution in the flying dust solution after washing, Drainage tank is sent into, to achieve the effect that separation of solid and liquid.
The filter cloth is corrected in transmit process by filter cloth correction device, and filter cloth passes through filter cloth in transmit process
Tensioning apparatus is tensioned, and filter cloth correction device and filter cloth tensioning apparatus are controlled by the air compressor machine of outside setting.Filter cloth hinders
Plug can occur 1-3 months after use, can clean out the particle in the micropore of microporous barrier equipped with ultrasonic cleaning equipment,
Ensure that equipment runs well.
The vacuum belt machine is externally provided with control cabinet 31, and control cabinet is equipped with switch button, scram button, and is set in control cabinet
There is the control system of controllable filter cloth transmission speed.Water receiving tank 32 is set to below the vacuum belt machine.
Described that removing heavy metals system is gone to be connected to the first vacuum belt suction filtration machine, the first vacuum belt filters the primary pumping of machine
Filtrate is the washing filtrate after three-level washing, smoke filtrate enter it is described go removing heavy metals system, it is described to remove removing heavy metals
System includes stirring pool a33, stirring pool b34 and the coagulative precipitation tank 35 being connected with each other, and weight is removed in stirring pool a and stirring pool b
Metal ion, stirring pool b are connected to sludge collecting pit a36, and sludge collecting pit a is connected to filter press a37；The coagulative precipitation tank
The interior a large amount of calcium ions and magnesium ions of removal, coagulative precipitation tank are connected to sludge collecting pit b38, and sludge collecting pit b is connected to filter press b39；
Filter press b is connect with the storage mud tank 40.
The input end of the membrane distillation concentration system is connected to the liquid outlet of the filter press b by pipeline；Membrane distillation
The discharge end of concentration systems is saline solns, and saline solns enter turbidity removal device 41, and the saline solns in turbidity removal device pass through infusion pump
Feed liquid is transported to evaporation and crystallization system.
The outlet end of the evaporation and crystallization system is connected to filtered water tank, and the discharge end of evaporation and crystallization system is aqueous 7% knot
Brilliant salt.
The filtered water tank 42 is connected to third vacuum belt by pipeline a and filters machine, and third vacuum belt filters machine and passes through
Pipeline b is connected to agitator tank c.
Further include external filtered water tank 43, external filtered water tank is connected by pipeline and agitator tank a, agitator tank b and agitator tank c respectively
It connects.
Harmless treatment and recycling are carried out to flying dust using a kind of flying dust harmless treatment resource recycling device
The method of regeneration, it is characterised in that：Include the following steps：
(1) flying dust is transported by flying dust transport vehicle 2 and is transported in ash cellar 1, and the flying dust in ash cellar is quantitatively transported to solid phase
In catalysis dechlorination removing toxic substances removal bioxin system, in removal bioxin system is detoxified in solid catalysis dechlorination, flying dust enters solid phase
In the feed bin 3 of catalysis dechlorination removing toxic substances removal bioxin system, while mineral catalysis agent being added in feed bin, mineral catalysis agent is eight chlorine
For hexichol, then flying dust and mineral catalysis agent quantitatively enters the progress bioxin dechlorination of thermal decomposition furnace 4, and phenyl parent passes through after dechlorination
Condensation reaction generates the nontoxic poly- product of height, removes flying dust Zhong bioxin in this way.
(2) fly ash carry for eliminating bioxin enters in incineration of refuse flyash tertiary effluent elution salt system, initially enters and stirs
It mixes in tank a20, solid-liquid mass ratio 1 is then added into agitator tank by external filtered water tank 43：After 4 water is stirred 30min,
Primary stirring flying dust slurries, which are pumped into the first vacuum belt and filter machine 21, carries out first time separation of solid and liquid, wherein primary aqueous flying dust into
Enter agitator tank b22, a smoke filtrate, which enters, goes removing heavy metals system；Solid-liquid matter is added by external filtered water tank in agitator tank b
Measure ratio 1：4 water is stirred 30min, and secondary agitation flying dust slurries are pumped into the second vacuum belt and filter the progress of machine 23 second admittedly
Liquid detaches, wherein secondary aqueous flying dust enters agitator tank c24, secondary smoke filtrate enters agitator tank a and comes for agitator tank a washings
Water；Solid-liquid mass ratio 1 is added by external filtered water tank in agitator tank c：4 water is stirred 30min, triple mixing flying dust slurry
Liquid pump enter third vacuum belt filter machine 25 carry out third time separation of solid and liquid, third time it is aqueous be less than 50% and saliferous be less than
1% flying dust outward transport is transported to storage mud tank 40, and smoke filtrate returns to agitator tank b and washes water for agitator tank b three times；Third simultaneously
The internal filtered water tank of vacuum belt suction filtration machine needs, which draws water, carries out filter cloth cleaning, and the cleaning waste liquid after cleaning, a part, which is conveyed into, to be stirred
Waters of the tank c for three-level washing stirring is mixed, a part is complemented at external filtered water tank after filter filters and continues reuse；Through
There is part heavy-metal residual in the flying dust for the storage mud tank crossed after washing, there are two main classes：One kind is both sexes heavy metal, including
Lead, zinc exist in cement gel system and leach risk；Another kind of is other heavy metals, including copper, nickel, cadmium, chromium etc., in cement
Relatively stablize in gel rubber system.In order to reduce the migratory activity after heavy metal enters building materials, using chemical stabilization technology, will stablize
Agent, which is added in the flying dust of storage mud tank, makes heavy metal inerting, to reduce the content for leaching heavy metal, makes to be used as raw material by flying dust
Construction material meets environmental risk control standard and control of product quality standard simultaneously.
(3) smoke filtrate is exactly the washing filtrate after three-level is washed, and washing filtrate enters washing water tank 44,
The water of the washing water tank is pumped into removing heavy metals system is gone, due to containing a large amount of calcium ions and magnesium ions and an a small amount of huge sum of money in washing filtrate
Belong to ion, after washing filtrate is introduced into stirring pool a, while addition heavy metal complexing agent is pre-formed small micelle in stirring pool a33
From stirring pool b is flow to, PAC, which is added, in stirring pool b is stirred to react, and is further formed big micelle, after carrying out preliminary mud-water separation, contains
Water heavy metal sewage sludge enters sludge collecting pit a36, and the sludge in sludge collecting pit a is separated by solid-liquid separation by filter press a37, heavy metal
Dangerous waste processing is operated outside sludge；Supernatant in stirring pool b34 enters coagulative precipitation tank 35, and sulfuric acid is added by medicine system,
Sodium carbonate carries out coagulating sedimentation, and PAC is added and is stirred to react, after being further formed the preliminary mud-water separation of big micelle progress, aqueous calcium
Magnesium sludge enters sludge collecting pit b38, and the sludge in sludge collecting pit b is separated by solid-liquid separation by filter press b39, and calcium and magnesium sludge enters
Store up mud tank, activating agent is added by pipe-line mixer in the supernatant in filter press b, further gone into flotation tank it is turbid, go it is turbid after
Saline solns enter membrane distillation system.
(4) water lotion after removing heavy metals is handled using membrane distillation concentration system, and saline solns are pumped into heating water
Case heats solution, and after saline solns are heated to 62 DEG C using steam using volumetric heat exchanger, saline solns enter hydrothermal solution
Water tank；Solution is pumped into the membrane distillation system being superimposed with high energy membrane component array from hydrothermal solution water tank and carries out distillation production water；Contain
Salting liquid is cooled down after membrane distillation system, can be recycled partial heat by heat pump, reduces required steam consumption, and maintain
62 DEG C of hydrothermal solution is into film temperature；Simultaneously heat pump also coolant liquid is cooled down, then by frequency conversion cooling tower be cooled to required coolant liquid into
30 DEG C of temperature of mouth；The distilled water of output enters the utilization of incineration of refuse flyash tertiary effluent salt elution system circulation, reduces washing and is disappeared
The water of consumption；As the moisture in saline solns is reduced, then solution concentration is increasing in hydrothermal solution water tank, reaches and is crystallized into salt
After the saliferous rate control of system requires；It opens infusion pump and dope is transported to evaporation and crystallization system, simultaneous quantitative carries out fluid infusion, reaches
It is balanced to liquid fluid infusion is gone out；After membrane distillation system operation 20h, in order to maintain the lasting hydrophobicity of part film, backwashed,
Backwashing time can be controlled according to practical feed liquid situation in 2~4h.
(5) dope of membrane distillation concentration system heats after preheater tentatively heats up into the evaporation of salt crystal system
Device is pumped into evaporative crystallization in crystallizing evaporator through forced circulation；The indirect steam that evaporation generates is compressed by compressor,
Indirect steam temperature is increased 15-20 DEG C, heat exchanger is come back to as secondary heat source and provides a system to heat source, weigh to greatest extent
Steam latent heat is utilized again；Feed liquid is concentrated into saliferous rate 50-60%, salt crystallization is precipitated in cooling, and the concentrate containing crystallization goes vacuum belt
Formula is dehydrated, and dehydration mother liquor returns vapo(u)rization system, aqueous 7% crystal salt pack outward transport；Crystallizing evaporator condensed water returns to water wash system
It is recycled as washing supplement water.
Above-described embodiment is the specific descriptions carried out to the present invention, and only invention is further explained, Bu Nengli
Solution is limiting the scope of the present invention, and it is nonessential that those skilled in the art according to the content of foregoing invention makes some
Modifications and adaptations are each fallen within protection scope of the present invention.
Claims (1)
1. a kind of method carrying out harmless treatment and resource recycling to flying dust, it is characterised in that：Include the following steps：
(1) flying dust is transported by flying dust transport vehicle and is transported in ash cellar, and it is de- that the flying dust in ash cellar is quantitatively transported to solid catalysis
Chlorinolysis poison removes in bioxin system, and in removal bioxin system is detoxified in solid catalysis dechlorination, it is de- that flying dust enters solid catalysis
Chlorinolysis poison removes in the feed bin of bioxin system, while mineral catalysis agent being added in feed bin, and then flying dust and mineral catalysis agent are fixed
Amount enters thermal decomposition furnace and carries out bioxin dechlorination, and phenyl parent generates the poly- production of nontoxic height by condensation reaction after dechlorination
Object removes flying dust Zhong bioxin in this way；
(2) fly ash carry for eliminating bioxin enters in incineration of refuse flyash tertiary effluent elution salt system, initially enters agitator tank a
It is interior, solid-liquid mass ratio 1 is then added into agitator tank by external filtered water tank：It is primary to stir after 4 water is stirred 30min
Flying dust slurries are pumped into the first vacuum belt and filter machine progress first time separation of solid and liquid, wherein primary aqueous flying dust enters agitator tank b,
Smoke filtrate, which enters, goes removing heavy metals system；Solid-liquid mass ratio 1 is added by external filtered water tank in agitator tank b：4 water into
Row stirring 30min, secondary agitation flying dust slurries are pumped into the second vacuum belt suction filtration machine and be separated by solid-liquid separation for the second time, wherein secondary
Aqueous flying dust enters agitator tank c, and secondary smoke filtrate enters agitator tank a and washes water for agitator tank a；Pass through in agitator tank c
Solid-liquid mass ratio 1 is added in external filtered water tank：4 water is stirred 30min, and triple mixing flying dust slurries are pumped into third vacuum belt
Suction filtration machine carry out third time separation of solid and liquid, third time it is aqueous be less than 50% and saliferous less than 1% flying dust outward transport be transported to storage
Mud tank, smoke filtrate return agitator tank b is for agitator tank b washing waters three times；Third vacuum belt suction filtration machine needs inside simultaneously
Filtered water tank, which draws water, carries out filter cloth cleaning, the cleaning waste liquid after cleaning, and a part is conveyed into agitator tank c for three-level washing stirring
Water, a part are complemented at external filtered water tank after filter filters and continue reuse；Flying for mud tank is stored up after washing
There is part heavy-metal residual in ash, there are two main classes：One kind is both sexes heavy metal, including lead, zinc, is deposited in cement gel system
Leaching risk；Another kind of is other heavy metals, including copper, nickel, cadmium, chromium, is relatively stablized in cement gel system；In order to reduce
Heavy metal enters the migratory activity after building materials, and using chemical stabilization technology, stabilizer, which is added in the flying dust of storage mud tank, makes weight
Metal inerting makes to be used as the construction material of raw material by flying dust while meeting environmental risk to reduce the content for leaching heavy metal
Control standard and control of product quality standard；
(3) smoke filtrate is exactly the washing filtrate after three-level is washed, and washing filtrate enters washing water tank, the water
The water of water tank is pumped into going removing heavy metals system, due in washing filtrate containing a large amount of calcium ions and magnesium ions and a small amount of heavy metal from
Son, washing filtrate are introduced into stirring pool a, while being added in stirring pool a after heavy metal complexing agent is pre-formed small micelle and flowing to certainly
PAC is added in stirring pool b, stirring pool b to be stirred to react, is further formed big micelle, after carrying out preliminary mud-water separation, an aqueous huge sum of money
Belong to sludge and enter sludge collecting pit a, the sludge in sludge collecting pit a is separated by solid-liquid separation by filter press a, is operated outside heavy metal sewage sludge
Dangerous waste processing；Supernatant in stirring pool b enters coagulative precipitation tank, sulfuric acid is added by medicine system, sodium carbonate carries out coagulation
Precipitation is added PAC and is stirred to react, and after being further formed the preliminary mud-water separation of big micelle progress, aqueous calcium and magnesium sludge enters sludge
Sludge in collecting pit b, sludge collecting pit b is separated by solid-liquid separation by filter press b, and calcium and magnesium sludge, which enters, stores up mud tank, in filter press b
Supernatant by pipe-line mixer be added activating agent, further gone into flotation tank it is turbid, go it is turbid after saline solns enter film steaming
Evaporate system；
(4) water lotion after removing heavy metals is handled using membrane distillation concentration system, and saline solns are pumped into heating water tank, right
Solution heats, and after saline solns are heated to 62 DEG C using steam using volumetric heat exchanger, saline solns enter hydrothermal solution water tank；
Solution is pumped into the membrane distillation system being superimposed with high energy membrane component array from hydrothermal solution water tank and carries out distillation production water；Saline solns
Cooled down after membrane distillation system, can be recycled partial heat by heat pump, reduces required steam consumption, and maintain 62 DEG C
Hydrothermal solution is into film temperature；Heat pump also cools down coolant liquid simultaneously, then is cooled to required cooling liquid inlet temperature by frequency conversion cooling tower
30℃；The distilled water of output enters the utilization of incineration of refuse flyash tertiary effluent salt elution system circulation, reduces and washes consumed water
Amount；As the moisture in saline solns is reduced, then solution concentration is increasing in hydrothermal solution water tank, reaches into salt crystal system
After the control of saliferous rate requires；It opens infusion pump and dope is transported to evaporation and crystallization system, simultaneous quantitative carries out fluid infusion, reaches liquid
Fluid infusion balances；It after membrane distillation system operation 20h, in order to maintain the lasting hydrophobicity of part film, is backwashed, is backwashed
Time can control according to practical feed liquid situation in 2~4h；
(5) dope of membrane distillation concentration system enters the evaporation heater of salt crystal system, warp after preheater tentatively heats up
Forced circulation is pumped into evaporative crystallization in crystallizing evaporator；The indirect steam that evaporation generates is compressed by compressor, by two
Secondary vapor (steam) temperature increases 15-20 DEG C, comes back to heat exchanger as secondary heat source and provides a system to heat source, repeats profit to greatest extent
Use steam latent heat；Feed liquid is concentrated into saliferous rate 50-60%, salt crystallization is precipitated in cooling, and the concentrate containing crystallization goes vacuum belt de-
Water, dehydration mother liquor return vapo(u)rization system, aqueous 7% crystal salt pack outward transport；Crystallizing evaporator condensed water returns to water wash system conduct
Washing supplement water recycles.
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