CN107384448A - A kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system - Google Patents
A kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system Download PDFInfo
- Publication number
- CN107384448A CN107384448A CN201710483499.XA CN201710483499A CN107384448A CN 107384448 A CN107384448 A CN 107384448A CN 201710483499 A CN201710483499 A CN 201710483499A CN 107384448 A CN107384448 A CN 107384448A
- Authority
- CN
- China
- Prior art keywords
- zinc
- pyrolysis
- vinasse
- waste paint
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 239000011701 zinc Substances 0.000 title claims abstract description 181
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 181
- 239000002699 waste material Substances 0.000 title claims abstract description 114
- 239000002893 slag Substances 0.000 title claims abstract description 68
- 238000011084 recovery Methods 0.000 title abstract description 15
- 238000010422 painting Methods 0.000 title abstract 5
- 238000005516 engineering process Methods 0.000 title abstract 3
- 238000000197 pyrolysis Methods 0.000 claims abstract description 216
- 239000003973 paint Substances 0.000 claims abstract description 113
- 239000000428 dust Substances 0.000 claims abstract description 39
- 239000002296 pyrolytic carbon Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 25
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 238000004064 recycling Methods 0.000 claims abstract description 14
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 84
- 239000000463 material Substances 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 230000008901 benefit Effects 0.000 description 9
- 238000001035 drying Methods 0.000 description 9
- 238000005336 cracking Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000002920 hazardous waste Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000004227 thermal cracking Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 208000032467 Aplastic anaemia Diseases 0.000 description 1
- 206010008479 Chest Pain Diseases 0.000 description 1
- 206010010774 Constipation Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 208000032839 leukemia Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 235000019629 palatability Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 208000008423 pleurisy Diseases 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 208000002254 stillbirth Diseases 0.000 description 1
- 231100000537 stillbirth Toxicity 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/30—Other processes in rotary ovens or retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/32—Other processes in ovens with mechanical conveying means
- C10B47/44—Other processes in ovens with mechanical conveying means with conveyor-screws
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system, the technique to comprise the following steps：Zinc waste painting slag and vinasse will be contained to carry out cloth in revolving bed pyrolysis installation and be pyrolyzed, obtain being pyrolyzed oil gas and pyrolytic carbon containing zinc, pyrolytic carbon containing zinc is passed through direct-combustion boiler burning, obtain zinc smoke, zinc smoke removing dust device is collected, obtain zinc oxide and pyrolysis ash, waste painting slag containing zinc efficiently solves the problem that a large amount of vinasse are difficult to recycling treatment with vinasse cooperative disposal recovery zinc technology, also it have found new outlet for the processing of this dangerous waste of waste painting slag containing zinc simultaneously, using dangerous waste containing zinc as catalyst, effective processing of dangerous waste can be realized, solve vinasse and the intractable problem of Oil Paint Slag again, also solve and the drawbacks of pyrolysis time is long when gas calorific value is low and Oil Paint Slag is individually pyrolyzed is pyrolyzed when vinasse are individually pyrolyzed, and also achieve the recovery of metallic zinc, system overall economy quality is notable.
Description
Technical Field
The invention relates to the technical field of solid waste and hazardous waste treatment, in particular to a process and a system for recovering zinc by cooperatively treating zinc-containing waste paint residues and vinasse.
Background
The liquor industry in China has huge yield, and a large amount of vinasse is discharged every year, and statistics shows that the vinasse of the liquor discharged every year in China can reach 3000 ten thousand tons. The water content and acidity of the feed are relatively separated, so the feed is not easy to transport, is easy to rot and deteriorate, has poor palatability when being directly used as feed, and is difficult to widely popularize. At present, only a small part of the distillers 'grains are used for processing feed and chemical raw materials, and because the alcohol concentration of the distillers' grains is high and the content of crude fiber is too high, the livestock is easy to cause indigestion, and constipation, abortion, stillbirth and the like of the livestock are caused. And a large amount of energy is consumed in the manufacturing and drying process, so that the economy is low. When the thermal treatment modes such as fluidized bed and gasification incineration are adopted, due to the characteristics of the nature of the vinasse raw materials, the vinasse ash has low melting point and is easy to adhere to the wall surface of the furnace body, so that the ash on the wall surface of the furnace wall is accumulated and seriously corroded. Therefore, a large part of the waste water is directly discharged because the waste water cannot be reused, and resource waste and environmental pollution are caused.
The zinc-containing waste paint residues are one of the national regulated hazardous wastes, the number of the hazardous wastes is HW-06, and the main hazard is that the zinc-containing waste paint residues contain a large amount of inhalable organic solvent vapor. It is known that paints are composed of film-forming substances such as various resins, solvents, pigments, drying agents and additives, and that ordinary waste paints usually use gasoline as a solvent, epoxy iron oxide red primer contains a small amount of xylene, and dip paints mainly contain toluene and also a small amount of benzene. The research shows that: most painters over 10 years old have symptoms of cough, easy fatigue, headache, chest distress and no strength of limbs, and have a high proportion of serious diseases such as aplastic anemia, leukemia, tuberculosis, pleuritis and the like, so that no reasonable method for treating waste paint slag containing zinc exists at present, most of the painters adopt a combustion mode for treatment, and the environment is greatly influenced. On the other hand, the zinc content in the waste paint slag containing zinc is higher, and the recovery value is very high.
In view of the above, it is an urgent technical problem to be solved by those skilled in the art to find an apparatus or method capable of fully recycling distiller's grains and zinc-containing waste paint residues.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a process for recovering zinc by cooperatively treating waste paint slag containing zinc and vinasse, which comprises the following steps:
1) distributing and pyrolyzing zinc-containing waste paint residues and vinasse in a rotary bed pyrolysis device to obtain pyrolysis oil gas and zinc-containing pyrolysis carbon;
2) introducing the zinc-containing pyrolytic carbon into a direct-fired boiler for combustion to obtain zinc-containing smoke dust;
3) collecting the zinc-containing smoke dust by a dust removal device to obtain zinc oxide and pyrolysis ash.
Further, zinc-containing waste paint residues and vinasse are conveyed into a rotary bed pyrolysis device by adopting a single conveying pipeline, and an upper layer and a lower layer of mixed cloth or a plurality of layers of mixed cloth at intervals are arranged in the rotary bed pyrolysis device; and/or
The zinc-containing waste paint slag and the vinasse are uniformly mixed and then are conveyed into a rotary bed pyrolysis device for distribution.
Further, the upper and lower two-layer mixed cloth includes: the wine lees are on the upper part and the zinc-containing waste paint residues are on the lower part, or the zinc-containing waste paint residues are on the upper part and the wine lees are on the lower part;
the multilayer interval mixed cloth is a multilayer zinc-containing waste paint slag and multilayer vinasse interval arrangement cloth.
Further, zinc-containing waste paint slag and vinasse realize the pyrolysis through four temperature control areas of the rotating bed pyrolysis device in sequence, and the temperatures of the four temperature control areas are as follows in sequence: 300-450 ℃, 450-500 ℃, 550-650 ℃ and 650-700 ℃, and the total time of the zinc-containing waste paint slag and the distiller's grains passing through the four temperature control areas is 60-90 min.
Further, the temperatures of the four temperature control areas are as follows in sequence: 400 ℃, 500 ℃, 600 ℃, 700 ℃, and the total time of the zinc-containing waste paint residues and the vinasse passing through the four temperature control areas is 80 min.
Further, the dust removing device comprises a cyclone dust remover and/or a bag-type dust remover.
Further, introducing the pyrolysis oil gas obtained in the step 1) into an oil-gas separation device, and recovering to obtain pyrolysis oil water and pyrolysis gas.
Further, the pyrolysis gas and the air are mixed and then are combusted in a radiant tube inside the rotary bed pyrolysis device, so that a heat source is provided for the rotary bed pyrolysis device.
The invention also provides a system for recycling zinc by cooperatively disposing the waste paint slag containing zinc and vinasse, which comprises the following steps:
the spiral feeding device comprises a spiral feeding device outlet;
the rotary bed pyrolysis device comprises a material inlet, a pyrolysis carbon discharge port, a pyrolysis oil gas outlet and a heat source inlet which are connected with the outlet of the spiral feeding device;
the direct-fired boiler comprises a pyrolytic carbon inlet and a smoke dust outlet which are communicated with the pyrolytic carbon outlet;
and the dust removal device comprises a smoke inlet, a waste gas outlet, zinc oxide and pyrolytic ash collection outlets which are communicated with the smoke outlet.
Further, still include oil-gas separation device, oil-gas separation device includes pyrolysis oil gas entry, pyrolysis profit collection export and the pyrolysis gas export with pyrolysis oil gas export intercommunication, and pyrolysis gas export and heat source entry intercommunication.
The invention has the advantages that:
1. effectively solves the problem that a large amount of vinasse is difficult to be recycled, and simultaneously finds a new way for the treatment of the zinc-containing waste paint slag which is dangerous waste.
2. In the pyrolysis reaction process, a vinasse and paint slag collaborative pyrolysis mode is adopted, so that the problem that vinasse and zinc-containing waste paint slag are difficult to treat is solved, and the defects that pyrolysis gas is low in heat value when vinasse is pyrolyzed independently and pyrolysis time is long when zinc-containing waste paint slag is pyrolyzed independently are also solved; the zinc in the zinc-containing waste paint residues can be used as a catalyst, no new additive is required to be added, not only can the effective treatment of hazardous wastes be realized, but also the simple substance of metal zinc, pyrolysis oil and high-purity pyrolysis gas can be simply and feasibly obtained, and the overall economy of the system is remarkable.
3. The zinc-containing waste paint slag and the vinasse adopt a medium-high temperature pyrolysis mode, so that the cracking degree of gaseous mixed organic matters is reduced, and C in pyrolysis gas2H4、C2H6、C3H6And C3H8The content of macromolecular hydrocarbons is increased, and the heat value of the pyrolysis gas is greatly improved.
4. The regenerative rotary bed pyrolysis device is used for high-temperature pyrolysis in anaerobic atmosphere, compared with high-temperature pyrolysis, the fuel consumption of a system is reduced, the high-temperature corrosion degree of a furnace body is avoided, and the service life of the furnace is prolonged. Meanwhile, the high-temperature pyrolytic carbon is directly conveyed to the direct-fired boiler for combustion, so that the heat energy loss of the pyrolytic carbon is avoided, and the heat efficiency of the system is improved.
5. The vinasse and the zinc-containing paint slag are mixed in different modes, so that the adaptability of the pyrolysis raw material to the pyrolysis furnace is improved.
Drawings
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:
FIG. 1 is a process flow diagram 1 of a zinc recovery process using co-processing of waste paint residues containing zinc and distiller's grains according to an embodiment of the present invention;
FIG. 2 is a process flow diagram 2 of a zinc recovery process using co-processing of waste paint slag containing zinc and distiller's grains according to another embodiment of the present invention;
FIG. 3 is a diagram of a material pyrolysis zone of a zinc recovery process using co-processing of zinc-containing waste paint slag and distiller's grains according to yet another embodiment of the present invention;
FIG. 4 is a cross-sectional view of a cloth type of a zinc recovery process using co-processing of waste paint slag containing zinc and distiller's grains according to another embodiment of the present invention;
FIG. 5 is a cross-sectional view of a cloth type of a zinc recovery process using co-processing of waste paint slag containing zinc and distiller's grains according to another embodiment of the present invention;
FIG. 6 is a cross-sectional view of a cloth type of a zinc recycling process using co-processing of waste paint residues containing zinc and distiller's grains according to another embodiment of the present invention;
FIG. 7 is a schematic diagram of a system for recycling zinc by co-processing waste paint residues containing zinc and distiller's grains according to another embodiment of the present invention;
wherein,
1 … feeding zone, 2 … I zone, 3 … II zone, 4 … III zone, 5 … IV zone, 6 … discharging zone, 7 … vinasse, 8 … zinc-containing waste oil gas slag, 9 … furnace plate, 10 … zinc-containing waste oil paint slag-vinasse mixed material, 11 … material stirring device, 12 … spiral feeding device, 13 … rotating bed pyrolysis device, 14 … direct combustion boiler, 15 … dust removal device, 16 … oil-gas separation device,
the outlet of a 121 … spiral feeding device, the inlet of 131 … materials, the outlet of 132 … pyrolytic carbon, the outlet of 133 … pyrolytic oil gas, the inlet of 134 … heat source, the inlet of 141 … pyrolytic carbon, the outlet of 142 … smoke dust, the inlet of 151 … smoke dust, the outlet of 152 … waste gas, the outlet of 153 … zinc oxide and pyrolytic ash collection, the inlet of 161 … pyrolytic oil gas, the outlet of 162 … pyrolytic oil water collection and the outlet of 163 … pyrolytic gas.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
One embodiment of the invention provides a zinc recovery process by co-processing zinc-containing waste paint slag and vinasse, which comprises the following steps:
1) distributing and pyrolyzing zinc-containing waste paint residues and vinasse in a rotary bed pyrolysis device to obtain pyrolysis oil gas and zinc-containing pyrolysis carbon;
2) introducing the zinc-containing pyrolytic carbon into a direct-fired boiler for combustion to obtain zinc-containing smoke dust;
3) the zinc-containing smoke dust is collected by a dust removal device to obtain zinc oxide and pyrolytic ash.
According to the embodiment, the zinc-containing waste paint residues and the vinasse are pyrolyzed, and the vinasse and the zinc-containing waste paint residues are treated, so that the environmental pollution caused by the discharge and treatment of the vinasse and the zinc-containing waste paint residues is effectively solved; after pyrolysis and subsequent processing, metal zinc can be obtained, and high-temperature pyrolytic carbon is directly conveyed to a direct-fired boiler for combustion, so that the heat energy loss of the pyrolytic carbon is avoided, and the heat efficiency of the system is improved.
As a preferred example of the above embodiment, as shown in fig. 1, the distiller's grains pass through a distiller's grain drying device and then are conveyed to a spiral feeding device, the zinc-containing waste paint slag is conveyed to another spiral feeding device, and then the zinc-containing waste paint slag and the distiller's grains are simultaneously conveyed from the respective spiral feeding devices to a rotary bed pyrolysis device by using separate conveying pipelines, and an upper layer and a lower layer of mixed cloth or a plurality of layers of spaced mixed cloth are arranged in the rotary bed pyrolysis device; or as shown in fig. 2, the distiller's grains are conveyed to a stirrer after passing through a distiller's grain drying device, meanwhile, the zinc-containing waste paint slag is conveyed to the stirrer, the zinc-containing waste paint slag and the distiller's grains are uniformly mixed in the stirrer and then conveyed to a rotary bed pyrolysis device through a spiral feeding device for distribution, the distribution diagram is as shown in fig. 6, and the zinc-containing waste paint slag-distiller's grains mixed material 10 is directly distributed on a furnace plate 9. Further preferably, the upper and lower layers of mixed cloth comprise: the vinasse 7 is on top and the zinc-containing waste paint slag 8 is on bottom as shown in FIG. 4, or the zinc-containing waste paint slag 8 is on top and the vinasse 7 is on bottom as shown in FIG. 5; the multilayer interval mixed cloth is a cloth with a plurality of layers of zinc-containing waste paint residues 8 and a plurality of layers of vinasse 7 arranged at intervals. Different material distribution modes can be selected according to actual needs, and the adaptability to the pyrolysis furnace during pyrolysis treatment is improved.
In the above-mentioned material distribution mode, when the above-mentioned mode of the lees 7 being on top and the zinc-containing waste paint residues 8 being on bottom as shown in fig. 4 is adopted, the catalytic effect of the zinc-containing waste paint residues 8 on the pyrolysis of the lees 7 can be enhanced because the zinc-containing waste paint residues 8 are heated and transfer mass upwards, but the lees 7 are light, so that the lees float to the periphery, and the risk of polluting the water-sealed tank by the lees is increased; when the material distribution mode shown in fig. 5 is adopted, namely the mode that the vinasse 7 is arranged at the bottom and the zinc-containing waste paint residues 8 are arranged at the top, the catalytic action of the zinc-containing waste paint residues 8 is weakened due to the fact that the zinc-containing waste paint residues 8 are arranged at the top, and the risk that the vinasse pollutes the water seal tank is avoided. The material distribution mode shown in fig. 6 is adopted, namely the vinasse 7 and the zinc-containing waste paint slag 8 are mixed outside the furnace and then conveyed into a rotary bed pyrolysis device, so that the zinc-containing waste paint slag-vinasse mixed material 10 is directly arranged on a furnace plate 9. Therefore, the cloth can be flexibly distributed according to actual conditions.
In another embodiment of the present invention, as shown in fig. 3, the waste paint slag containing zinc and the distiller's grains continuously enter from the feeding region 1 of the rotating bed pyrolysis device, a radiant tube is arranged above the inside of the rotating bed pyrolysis device, fuel gas is introduced into the radiant tube, temperature control can be performed by controlling the amount of the introduced fuel gas and a temperature measuring device, four temperature control regions are arranged in the rotating bed pyrolysis device, the waste paint slag containing zinc and the distiller's grains sequentially pass through the four temperature control regions to realize pyrolysis, then pyrolysis oil gas and pyrolysis carbon containing zinc obtained after pyrolysis are discharged from the discharging region 6, and the temperatures of the four temperature control regions sequentially are: 300-450 ℃, 450-500 ℃, 550-650 ℃ and 650-700 ℃, and the total time of the zinc-containing waste paint slag and the distiller's grains passing through the four temperature control areas is 60-90 min. Preferably, the temperatures of the four temperature control zones are, in order: the total time of zinc-containing waste paint residues and vinasse passing through the four temperature control areas is 80min at 400 ℃, 500 ℃, 600 ℃ and 700 ℃, the temperatures of the four areas are sequentially increased, the requirements on fuel supply and refractory materials of the radiant tube are higher and higher, and the four temperature control areas can save fuel and reduce the manufacturing cost of the radiant tube material.
In this embodiment, the maximum temperature of the rotating bed pyrolysis device reaches 650-. Organic matters in the vinasse and the zinc-containing waste paint residues are cracked into micromolecular combustible gas, tar, water vapor, pyrolytic carbon and the like under the high-temperature anaerobic condition, wherein metal oxides in the zinc-containing waste paint residues have the catalytic effect at high temperature, so that the thermal cracking reaction originally generated in the rotary bed pyrolysis device is converted into the catalytic cracking reaction due to the effect of the metal oxides in the paint residues, and the cracking degree of the organic matters and the product quality are greatly promoted. Meanwhile, the metal oxide is reduced to a simple metal substance in a reducing atmosphere. The melting temperature of the metal zinc is 419.53 ℃, and the gasification temperature is 907 ℃. Therefore, the reduced metal zinc in the IV area of the hearth can not generate oil gas along with pyrolysis in the form of steam to be discharged out of the rotary bed pyrolysis device, but remain in the pyrolysis carbon to enter a downstream treatment process. The zinc-containing pyrolytic carbon is directly conveyed into a direct-fired boiler, the zinc-containing pyrolytic carbon and combustion-supporting air subjected to heat exchange by an economizer are mixed for combustion to release heat, smoke generated after combustion passes through the economizer and the combustion-supporting air for heat exchange and then passes through a dust removal device, such as a cyclone dust remover or a bag-type dust remover, pyrolytic ash and zinc oxide are collected, and the smoke subjected to dust removal is purified by a smoke purifier until tail gas is qualified and then is exhausted.
In another embodiment of the invention, pyrolysis oil gas generated by pyrolysis is introduced into an oil-water direct cooling device to realize separation of pyrolysis oil water and pyrolysis gas, the pyrolysis oil water is subjected to oil-water separation after standing and layering, pyrolysis oil and pyrolysis gas can be collected in the process, the pyrolysis gas and the pyrolysis oil are gas-phase products generated after pyrolysis of zinc-containing waste paint residues and vinasse, and the pyrolysis oil and the pyrolysis gas are condensed into pyrolysis oil with high molecular weight due to different molecular weights and do not condense to form pyrolysis gas with low molecular weight, so that the pyrolysis oil and the pyrolysis gas can be used as fuel for self use or sale, and the economic benefit is further improved. Preferably, the separated pyrolysis gas is purified by the purification device and then conveyed into the rotary bed pyrolysis device, the pyrolysis gas and air are mixed and then are combusted in a radiant tube inside the rotary bed pyrolysis device, a heat source is provided for the rotary bed pyrolysis device, heat required by pyrolysis of the vinasse and the zinc-containing waste paint residues is maintained, energy conservation and emission reduction are further realized, and high-temperature flue gas generated by combustion is conveyed into the vinasse drying device to dry the vinasse.
For further explanation and illustration of the present invention, reference is made to the following specific examples, which are not intended to be limiting.
The components of the white spirit vinasse and the zinc-containing waste paint slag in a certain market are shown in tables 1 and 2:
TABLE 1 distillers grains Industrial analysis and elemental analysis (dry basis wt%)
Example 1
After independent feeding, the method adopts a layered material distribution mode as shown in fig. 4 and fig. 5, white spirit vinasse and zinc-containing waste paint slag are conveyed to a rotary bed pyrolysis device by adopting an independent conveying pipeline for pyrolysis, the pyrolysis temperature in the rotary bed pyrolysis device is controlled in a zone control mode, the temperature of four zones is 450 ℃ in a zone I, 500 ℃ in a zone II, 650 ℃ in a zone III, 700 ℃ in a zone IV, and the total pyrolysis time is controlled to be 80 min.
The mixture sequentially passes through the four intervals in the rotary bed pyrolysis device, and then the processes of drying, cracking and cooperative thermal cracking are completed. Organic matters in the vinasse and the zinc-containing waste paint residues are cracked into micromolecular combustible gas, tar, water vapor, pyrolytic carbon and the like under the high-temperature anaerobic condition, wherein metal oxides of the zinc-containing waste paint residues have the catalytic effect at high temperature, and are reduced into metal simple substances under the reducing atmosphere. The melting temperature of the metal zinc is 419.53 ℃, and the gasification temperature is 907 ℃. Therefore, the reduced metal zinc in the IV area of the hearth can not be discharged out of the rotary bed pyrolysis device along with oil gas generated by pyrolysis in the form of steam, but remain in the pyrolytic carbon.
An oil-water direct cooling device is arranged at the outlet of the rotating bed pyrolysis device, and pyrolysis oil gas can be separated into pyrolysis oil water and pyrolysis gas. Pyrolysis oil that the in-process was collected can sell or use by oneself, and the pyrolysis gas of collecting can let in the revolving bed in, and the pyrolysis gas burns in the inside radiant tube of revolving bed pyrolysis device after mixing with the air, for revolving bed pyrolysis device provides the heat source, maintains the required heat of lees and the required pyrolysis of zinc-containing waste paint sediment, and the lees of drying is carried to lees drying device to the high temperature flue gas that the burning produced.
The zinc-containing pyrolytic carbon produced after pyrolysis from the rotary bed pyrolysis device is directly conveyed to a direct-fired boiler, and in the direct-fired boiler, the zinc-containing pyrolytic carbon and combustion-supporting air subjected to heat exchange by an economizer are mixed, combusted and released heat. The smoke dust generated after combustion passes through a cyclone dust collector and a bag-type dust collector, and then pyrolysis ash and zinc oxide are collected.
The advantages of hybrid pyrolysis are illustrated below in specific experimental data.
When the vinasse is pyrolyzed independently, the heat value of pyrolysis gas is3439kcal/m3When the paint slag is pyrolyzed independently, the calorific value of the pyrolysis gas is 3059kcal/m3(ii) a When the vinasse-paint slag is subjected to mixture pyrolysis according to the material distribution mode 1 and the material distribution mode 2, the average heat value of pyrolysis gas reaches 4903kcal/m3。
Example 2
By adopting the material distribution mode shown in fig. 6, the distiller's grains and the waste paint slag containing zinc are premixed and stirred before entering the furnace, and then are conveyed to the rotary bed pyrolysis device through a common conveying pipeline for pyrolysis, so that the distiller's grains and the waste paint slag containing zinc are completely and uniformly mixed in the rotary bed pyrolysis device. The pyrolysis temperature in the rotary bed pyrolysis device is controlled in a zone control mode, the temperature of the four zones is 400 ℃ in the I zone, 500 ℃ in the II zone, 600 ℃ in the III zone, 700 ℃ in the IV zone and the total pyrolysis time is controlled to be 80 min.
The subsequent steps were processed in the same manner as in the previous example, resulting in the following experimental data and illustrating the advantages of the hybrid pyrolysis.
When the vinasse is pyrolyzed independently, the calorific value of the pyrolysis gas is 3439kcal/m3When the zinc-containing waste paint slag is pyrolyzed independently, the heat value of the pyrolysis gas is 3059kcal/m3(ii) a While the pyrolysis gas yield is slightly reduced when the cloth mode pyrolysis is performed as shown in FIG. 6, the heat value of the pyrolysis gas reaches 4503kcal/m3。
Example 3
A process for recovering zinc by co-processing zinc-containing waste paint slag and vinasse comprises the following steps:
1) the vinasse and the zinc-containing waste paint residues are conveyed into a rotary bed pyrolysis device by adopting a single conveying pipeline to be distributed in a mode shown in figure 4, pyrolysis is carried out after the distribution, the pyrolysis temperature in the rotary bed pyrolysis device is controlled in a partition control mode, the temperatures of four intervals are 300 ℃ in an I area 2, 450 ℃ in a II area 3, 550 ℃ in a III area 4, 650 ℃ in an IV area 5, and the total pyrolysis time is controlled to be 60 min. The mixture sequentially passes through the four intervals in the rotary bed pyrolysis device, and then the processes of drying, cracking and cooperative thermal cracking are completed. The reduced metal zinc in the IV area of the hearth cannot generate oil gas along with pyrolysis in the form of steam to be discharged out of the rotary bed pyrolysis device, but remains in the pyrolytic carbon;
2) directly conveying the zinc-containing pyrolytic carbon produced after pyrolysis from the rotary bed pyrolysis device to a direct-fired boiler for combustion to obtain zinc-containing smoke dust;
3) the zinc-containing smoke dust is filtered and collected by a cyclone dust collector and a bag-type dust collector to obtain zinc oxide and pyrolytic ash. This example receives the following experimental data illustrating the advantages of hybrid pyrolysis.
When the vinasse is pyrolyzed independently, the calorific value of the pyrolysis gas is 3439kcal/m3When the zinc-containing waste paint slag is pyrolyzed independently, the heat value of the pyrolysis gas is 3059kcal/m3And the calorific value of the pyrolysis gas reaches 4868kcal/m when the pyrolysis is carried out in a material distribution mode as shown in figure 43。
Example 4
A process for recovering zinc by co-processing zinc-containing waste paint slag and vinasse comprises the following steps:
1) the vinasse and the zinc-containing waste paint residues are conveyed into a rotary bed pyrolysis device by adopting an independent conveying pipeline to be distributed in a mode shown in figure 5, pyrolysis is carried out after the distribution, the pyrolysis temperature in the rotary bed pyrolysis device is controlled in a partition control mode, the temperatures of four regions are respectively 450 ℃ in a region I, 500 ℃ in a region II, 650 ℃ in a region III, 700 ℃ in a region IV, and the total pyrolysis time is controlled within 90 min. The mixture sequentially passes through the four intervals in the rotary bed pyrolysis device, and then the processes of drying, cracking and cooperative thermal cracking are completed. The reduced metal zinc in the IV area of the hearth cannot generate oil gas along with pyrolysis in the form of steam to be discharged out of the rotary bed pyrolysis device, but remains in the pyrolytic carbon;
2) directly conveying the zinc-containing pyrolytic carbon produced after pyrolysis from the rotary bed pyrolysis device to a direct-fired boiler for combustion to obtain zinc-containing smoke dust;
3) the zinc-containing smoke dust is filtered and collected by a cyclone dust collector and a bag-type dust collector to obtain zinc oxide and pyrolytic ash. This example receives the following experimental data illustrating the advantages of hybrid pyrolysis.
When the vinasse is pyrolyzed independently, the calorific value of the pyrolysis gas is 3439kcal/m3When the zinc-containing waste paint slag is pyrolyzed independently, the heat value of the pyrolysis gas is 3059kcal/m3And the calorific value of the pyrolysis gas reaches 4920kcal/m when the pyrolysis is carried out in a material distribution mode as shown in figure 53。
In conclusion, the zinc recovery process by co-processing the waste paint slag containing zinc and the distiller's grains provided by the invention at least has the following advantages:
1. effectively solves the problem that a large amount of vinasse is difficult to be recycled, and simultaneously finds a new way for the treatment of the zinc-containing waste paint slag which is dangerous waste.
2. In the pyrolysis reaction process, a vinasse and paint slag collaborative pyrolysis mode is adopted, so that the problem that vinasse and zinc-containing waste paint slag are difficult to treat is solved, and the defects that pyrolysis gas is low in heat value when vinasse is pyrolyzed independently and pyrolysis time is long when zinc-containing waste paint slag is pyrolyzed independently are also solved; the zinc in the zinc-containing waste paint residues can be used as a catalyst, no new additive is required to be added, not only can the effective treatment of hazardous wastes be realized, but also the simple substance of metal zinc, pyrolysis oil and high-purity pyrolysis gas can be simply and feasibly obtained, and the overall economy of the system is remarkable.
3. The zinc-containing waste paint slag and the vinasse adopt a medium-high temperature pyrolysis mode, so that the cracking degree of gaseous mixed organic matters is reduced, and C in pyrolysis gas2H4、C2H6、C3H6And C3H8The content of macromolecular hydrocarbons is increased, and the heat value of the pyrolysis gas is greatly improved.
4. The regenerative rotary bed pyrolysis device is used for high-temperature pyrolysis in anaerobic atmosphere, compared with high-temperature pyrolysis, the fuel consumption of a system is reduced, the high-temperature corrosion degree of a furnace body is avoided, and the service life of the furnace is prolonged. Meanwhile, the high-temperature pyrolytic carbon is directly conveyed to the direct-fired boiler for combustion, so that the heat energy loss of the pyrolytic carbon is avoided, and the heat efficiency of the system is improved.
5. The vinasse and the zinc-containing paint slag are mixed in different modes, so that the adaptability of the pyrolysis raw material to the pyrolysis furnace is improved.
The invention also provides a zinc recovery system for co-processing the waste paint slag containing zinc and the vinasse, which is shown in figure 7, and the method can be completed by the system, and comprises a spiral feeding device 12, a rotary bed pyrolysis device 13, a direct-fired boiler 14 and a dust removal device 15, wherein the spiral feeding device 12 comprises a spiral feeding device outlet 121; the rotary bed pyrolysis device 13 comprises a material inlet 131, a pyrolysis carbon discharge port 132, a pyrolysis oil gas outlet 133 and a heat source inlet 134 which are connected with the outlet 121 of the spiral feeding device; the direct-fired boiler 14 includes a pyrolysis char inlet 141 and a smoke outlet 142 communicating with the pyrolysis char discharge port 132; the dust removing device 15 includes a soot inlet 151 communicating with the soot outlet 142, an exhaust gas outlet 152, a zinc oxide and pyrolysis ash collecting outlet 153. Preferably, the system further comprises an oil-gas separation device 16, the oil-gas separation device 16 comprises a pyrolysis oil-gas inlet 161 communicated with the pyrolysis oil-gas outlet 133, a pyrolysis oil-water collection outlet 162 and a pyrolysis gas outlet 163, and the pyrolysis gas outlet 163 is communicated with the heat source inlet 134. The heat source inlet 134 is a gas inlet of a radiant tube installed inside the rotary bed pyrolysis apparatus 13 to provide heat radiation for pyrolysis, in which pyrolysis gas is burned.
In another embodiment, the system further includes a material stirring device 11, so as to complete the material distribution manner shown in fig. 6, and the zinc-containing waste paint residues and the distiller's grains are first fully mixed in the material stirring device 11 and then conveyed to the inside of the rotating bed pyrolysis device 13 through the spiral feeding device 12 for pyrolysis. In the rotating bed pyrolysis device 13, the highest temperature of the rotating bed pyrolysis device 13 reaches 700 ℃ in a partition temperature control mode, so that the metal zinc does not generate oil gas along with pyrolysis in a steam form and is discharged out of the rotating bed pyrolysis device, but remains in the pyrolysis carbon and enters a downstream treatment process.
In conclusion, the zinc recovery system for co-processing the waste paint slag containing zinc and the vinasse provided by the invention at least has the following advantages: the heat accumulating type rotary bed pyrolysis device is used for zone temperature control and oxygen insulation high-temperature pyrolysis, the system is high in heat efficiency, the system is simple in structure, the manufacturing cost is low, and energy is saved.
The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.
Claims (10)
1. A process for recovering zinc by co-processing zinc-containing waste paint residues and vinasse is characterized by comprising the following steps:
1) distributing and pyrolyzing zinc-containing waste paint residues and vinasse in a rotary bed pyrolysis device to obtain pyrolysis oil gas and zinc-containing pyrolysis carbon;
2) introducing the zinc-containing pyrolytic carbon into a direct-fired boiler for combustion to obtain zinc-containing smoke dust;
3) and collecting the zinc-containing smoke dust by using a dust removal device to obtain zinc oxide and pyrolysis ash.
2. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 1, wherein the waste paint slag containing zinc and the distiller's grains are conveyed into the rotary bed pyrolysis device by adopting a single conveying pipeline, and an upper layer and a lower layer of mixed cloth or a plurality of layers of spaced mixed cloth are arranged in the rotary bed pyrolysis device; and/or
And uniformly mixing the zinc-containing waste paint residues and the vinasse, and conveying the mixture into the rotary bed pyrolysis device for distribution.
3. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 2, wherein the upper and lower layers of mixed cloth comprise: the vinasse is above and the zinc-containing waste paint residues are below, or the zinc-containing waste paint residues are above and the vinasse is below;
the multilayer interval mixed cloth is a multilayer cloth with the zinc-containing waste paint residues and a multilayer cloth with the vinasse arranged at intervals.
4. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 1, wherein the waste paint slag containing zinc and the distiller's grains are pyrolyzed sequentially by passing through four temperature control areas of a rotary bed pyrolysis device, and the temperatures of the four temperature control areas are sequentially: 300-450 ℃, 450-500 ℃, 550-650 ℃ and 650-700 ℃, and the total time of the zinc-containing waste paint slag and the distiller's grains passing through the four temperature control areas is 60-90 min.
5. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 4, wherein the temperatures of the four temperature control areas are sequentially as follows: 400 ℃, 500 ℃, 600 ℃ and 700 ℃, wherein the total time of the zinc-containing waste paint slag and the vinasse passing through the four temperature control areas is 80 min.
6. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 1, wherein the dust removing device comprises a cyclone dust collector and/or a bag-type dust collector.
7. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 1, wherein the pyrolysis oil gas obtained in the step 1) is introduced into an oil-gas separation device, and pyrolysis oil water and pyrolysis gas are obtained by recycling.
8. The process for recycling zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 7, wherein the pyrolysis gas is mixed with air and then combusted in a radiant tube inside the rotary bed pyrolysis device to provide a heat source for the rotary bed pyrolysis device.
9. The utility model provides a zinc system is retrieved in zinc-containing waste paint sediment and lees coprocessing, its characterized in that includes:
a screw feeder comprising a screw feeder outlet;
the rotary bed pyrolysis device comprises a material inlet, a pyrolysis carbon discharge port, a pyrolysis oil gas outlet and a heat source inlet which are connected with the outlet of the spiral feeding device;
the direct-fired boiler comprises a pyrolytic carbon inlet and a smoke outlet which are communicated with the pyrolytic carbon outlet;
and the dust removal device comprises a smoke inlet, a waste gas outlet, zinc oxide and pyrolytic ash collection outlets which are communicated with the smoke outlet.
10. The zinc recycling system of claim 9, further comprising an oil-gas separation device, wherein the oil-gas separation device comprises a pyrolysis oil-gas inlet, a pyrolysis oil-water collection outlet and a pyrolysis gas outlet, the pyrolysis gas outlet is communicated with the heat source inlet, and the pyrolysis oil-gas outlet is communicated with the pyrolysis oil-gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483499.XA CN107384448A (en) | 2017-06-22 | 2017-06-22 | A kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483499.XA CN107384448A (en) | 2017-06-22 | 2017-06-22 | A kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107384448A true CN107384448A (en) | 2017-11-24 |
Family
ID=60333646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710483499.XA Pending CN107384448A (en) | 2017-06-22 | 2017-06-22 | A kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107384448A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116144384A (en) * | 2023-03-23 | 2023-05-23 | 浙江和惠生态环境科技有限公司 | Copyrolysis treatment process for oil sludge and organic hazardous waste |
| CN116219191A (en) * | 2022-12-14 | 2023-06-06 | 湖南锐异资环科技有限公司 | Cooperative treatment method of zinc-containing paint slag and waste mineral oil |
-
2017
- 2017-06-22 CN CN201710483499.XA patent/CN107384448A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116219191A (en) * | 2022-12-14 | 2023-06-06 | 湖南锐异资环科技有限公司 | Cooperative treatment method of zinc-containing paint slag and waste mineral oil |
| CN116144384A (en) * | 2023-03-23 | 2023-05-23 | 浙江和惠生态环境科技有限公司 | Copyrolysis treatment process for oil sludge and organic hazardous waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101544901B (en) | Method and device for preparing biological oil by biomass cracking | |
| CN105219417B (en) | Biomass pyrolysis system and biomass pyrolysis method | |
| CN107760338B (en) | Pyrolysis treatment process for organic solid waste | |
| CN103449701A (en) | Method and device for refinery sludge carbonization treatment and carbon recovery | |
| CN202063875U (en) | Green circulation economy type coal coking process device | |
| JPS63502190A (en) | How to recover reusable gas from waste | |
| CN111167841A (en) | System and method for treating industrial waste salt by fluidized bed | |
| CN211990211U (en) | System for fluidized bed handles industry waste salt | |
| WO2022067882A1 (en) | System and process of industrial continuous cracking of mixed waste plastics according to class | |
| CN108840544A (en) | A kind of reclaiming industrial sludge processing method | |
| CN106010651B (en) | A kind of processing unit of tanning waste and treatment process containing it | |
| CN201343520Y (en) | Flash dry distillation technology device of oil shale | |
| CN108101572B (en) | Method for preparing light ceramsite by coupling oil-containing sludge at bottom of high-viscosity tank with solid waste in coal chemical industry | |
| CN105778945B (en) | It is pyrolyzed the system and method for biomass | |
| CN211394370U (en) | System for pyrolysis of junked tire of boiler flue gas of thermal power plant | |
| CN107163960A (en) | A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal | |
| CN109945211A (en) | A kind of incineration treatment method and system of semicoke pyrolysis off-gas waste liquid | |
| CN105861080A (en) | Rapid catalytic pyrolysis system of biomass downward bed and biomass pyrolysis method | |
| CN104059681B (en) | A kind of regenerative gas radiator tube rotating bed oil shale distillation and shale slag utilize technique | |
| CN107384448A (en) | A kind of waste painting slag containing zinc and vinasse cooperative disposal recovery zinc technology and system | |
| CN205328941U (en) | Pyrolysis equipment | |
| CN107286965A (en) | A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal | |
| CN207026092U (en) | The system for handling house refuse | |
| CN102504850B (en) | Oil sand solid hot carrier low-temperature dry distillation process | |
| CN105295985A (en) | Method used for producing fuel oil and combustible gas from abandoned tyres |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |