CN107163960A - A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal - Google Patents
A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal Download PDFInfo
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- CN107163960A CN107163960A CN201710481820.0A CN201710481820A CN107163960A CN 107163960 A CN107163960 A CN 107163960A CN 201710481820 A CN201710481820 A CN 201710481820A CN 107163960 A CN107163960 A CN 107163960A
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- zinc
- pyrolysis
- waste paint
- vinasse
- gas
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 204
- 239000011701 zinc Substances 0.000 title claims abstract description 204
- 239000002699 waste material Substances 0.000 title claims abstract description 114
- 239000002893 slag Substances 0.000 title claims abstract description 69
- 238000010422 painting Methods 0.000 title abstract 5
- 238000000197 pyrolysis Methods 0.000 claims abstract description 197
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000004744 fabric Substances 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000004064 recycling Methods 0.000 claims abstract description 10
- 239000003973 paint Substances 0.000 claims description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 20
- 238000002309 gasification Methods 0.000 claims description 18
- 238000009826 distribution Methods 0.000 claims description 15
- 238000011084 recovery Methods 0.000 claims description 15
- 239000003034 coal gas Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims 1
- 239000013049 sediment Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 74
- 230000008901 benefit Effects 0.000 description 9
- 239000002296 pyrolytic carbon Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000007599 discharging Methods 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
- 238000005336 cracking 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
- 239000000446 fuel Substances 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
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002904 solvent 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
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- -1 at the moment Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000002485 combustion reaction 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
- 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
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 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
- C10B57/005—After-treatment of coke, e.g. calcination desulfurization
-
- 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
- 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
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
-
- 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
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1606—Combustion processes
-
- 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)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Zinc technology and system are reclaimed the invention provides a kind of waste painting slag containing zinc and vinasse cooperative disposal, the technique comprises the following steps：Zinc waste painting slag and vinasse will be contained to carry out cloth in revolving bed pyrolysis installation and be pyrolyzed, mixed oil and gas containing zinc are obtained, mixed oil and gas containing zinc obtain pyrolysis gas and solidliquid mixture containing zinc through Quench, solidliquid mixture containing zinc is separated through equipment for separating liquid from solid, obtains metallic zinc and pyrolysis profit.Waste painting slag containing zinc reclaims zinc technology with vinasse cooperative disposal and efficiently solves the problem that a large amount of vinasse are difficult to recycling treatment, also it have found new outlet for the processing of this dangerous waste of waste painting slag containing zinc simultaneously, effective processing of dangerous waste can be realized, simple possible obtains metallic zinc simple substance again, high-purity, the pyrolysis gas of high-quality and the pyrolysis profit that can also be obtained, system overall economy quality are 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 zinc-containing mixed oil gas;
2) chilling the zinc-containing mixed oil gas to obtain pyrolysis gas and a zinc-containing solid-liquid mixture;
3) separating the zinc-containing solid-liquid mixture by a solid-liquid separation device to obtain the metal zinc and the pyrolysis oil water.
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: at the temperature of 600-750 ℃, 750-800 ℃, 850-950 ℃ and 950-1000 ℃, 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: 700 ℃, 800 ℃, 900 ℃, 1000 ℃, and the time for the zinc-containing waste paint residues and the vinasse to pass through the four temperature control areas is 80 min.
Further, the chilling mode is as follows: chilling the mixed oil gas by an oil-water direct cooling device.
And further, the pyrolytic carbon generated after pyrolysis of the rotary bed pyrolysis device is conveyed to a gasification furnace for gasification to generate gasified coal gas, and the gasified coal gas is mixed with air and then is combusted in a radiant tube inside the rotary bed pyrolysis device to provide a heat source 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 inlet and a spiral feeding device outlet;
the rotary bed pyrolysis device comprises a material inlet, a pyrolysis carbon discharge port, a mixed oil gas outlet and a heat source inlet which are connected with the outlet of the spiral feeding device;
the oil-gas separation device comprises a mixed oil-gas inlet, a pyrolysis gas outlet and a solid-liquid mixture outlet which are communicated with the mixed oil-gas outlet;
the solid-liquid separation device comprises a solid-liquid mixture inlet, a metal zinc collection outlet and a pyrolysis oil-water collection outlet, wherein the solid-liquid mixture inlet is communicated with the solid-liquid mixture outlet.
The gasification furnace comprises a pyrolytic carbon inlet and a coal gas outlet which are communicated with the pyrolytic carbon outlet, and the coal gas outlet is communicated with a heat source inlet of the rotary bed pyrolysis device.
Further, the stirrer comprises a stirrer outlet communicated with the inlet of the spiral feeding device.
The embodiment of the invention has the following beneficial effects:
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 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 paint slag is pyrolyzed independently are also solved; the zinc in the waste paint slag containing zinc can be used as a catalyst, no new additive is needed to be added, the effective treatment of hazardous waste can be realized, and the simple substance of metal zinc can be simply and feasibly obtained. Realizes the resource utilization of the metal zinc and the organic matters, also realizes the recovery of the metal zinc, and has remarkable overall economy of the system.
3. The regenerative rotary bed pyrolysis device is used for oxygen-free high-temperature pyrolysis, so that the system is high in heat efficiency, high-purity and high-quality pyrolysis gas and pyrolysis oil water can be obtained after pyrolysis, the pyrolysis gas and the pyrolysis oil water can be used or sold after further treatment, and the economic benefit is further improved.
4. The lees and the zinc-containing waste paint slag adopt different modes to mix the cloth, and a proper cloth mode can be selected according to actual needs, 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 slag-vinasse mixed material, 11 … stirrer, 12 … spiral feeding device, 13 … rotating bed pyrolysis device, 14 … oil-gas separation device, 15 … solid-liquid separation device, 16 … gasification furnace,
111 … agitator outlet, 121 … spiral feeder inlet, 122 … spiral feeder outlet, 131 … material inlet, 132 … pyrolytic carbon discharge outlet, 133 … mixed oil gas outlet, 134 … heat source inlet, 141 … mixed oil gas inlet, 142 … pyrolytic gas outlet, 143 … solid-liquid mixture outlet, 151 … solid-liquid mixture inlet, 152 … metal zinc collection outlet, 153 … pyrolytic oil water collection outlet, 161 … pyrolytic carbon inlet, 162 … coal gas outlet.
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 zinc-containing mixed oil gas;
2) chilling the zinc-containing mixed oil gas to obtain pyrolysis gas and a zinc-containing solid-liquid mixture;
3) separating the zinc-containing solid-liquid mixture by a solid-liquid separation device to obtain the metal zinc and the pyrolysis oil water.
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 treatment, metal zinc can be obtained, high-purity pyrolysis gas and pyrolysis oil water can be obtained, and the pyrolysis gas and the pyrolysis oil water can be used by oneself or sold after further treatment, so that the economic benefit is further improved.
As a preferred example of the above embodiment, as shown in fig. 1, the distiller's grains are conveyed to a spiral feeding device after passing through a distiller's grain drying 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 conveyed to a rotary bed pyrolysis device from the respective spiral feeding devices 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 spiral feeding device after passing through a distiller's grain drying device, the zinc-containing waste paint residues are conveyed to another spiral feeding device, then the zinc-containing waste paint residues and the distiller's grains are conveyed to a stirrer to be uniformly mixed, and then the mixture is conveyed to a rotary bed pyrolysis device for distribution, wherein the distribution diagram is as shown in fig. 6, and the zinc-containing waste paint residues-distiller's grains mixture 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, so that the system equipment is increased, and the total project investment is increased. Therefore, the cloth can be flexibly distributed according to actual conditions.
In another embodiment of the present invention, as shown in fig. 3, the zinc-containing waste paint slag and the distiller's grains continuously enter the rotating bed pyrolysis device from the feeding region 1, 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 the temperature measuring device, four temperature control regions are arranged in the rotating bed pyrolysis device, the zinc-containing waste paint slag and the distiller's grains sequentially pass through the four temperature control regions to realize pyrolysis, and are finally discharged from the discharging region 6, and the temperatures of the four temperature control regions are sequentially: at the temperature of 600-750 ℃, 750-800 ℃, 850-950 ℃ and 950-1000 ℃, 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 700 ℃, 800 ℃, 900 ℃ and 1000 ℃, 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 arrangement of 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 950-. Organic matters in the vinasse and the zinc-containing waste paint residues are cracked into micromolecular combustible gas, tar, water vapor 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 action of the metal oxides in the zinc-containing waste 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, all the reduced metal zinc in the IV area of the hearth is changed into zinc steam, and the zinc steam is discharged out of the rotary bed pyrolysis device along with oil gas generated by pyrolysis and enters a downstream treatment process.
As a preferable mode of the above embodiment, the method of chilling the zinc-containing mixed oil gas is as follows: the zinc-containing mixed oil gas discharged by the rotary bed pyrolysis device is directly introduced into the oil-water direct cooling device, the zinc-containing mixed oil gas in the oil-water direct cooling device is fully contacted with chilling water, so that the zinc-containing mixed oil gas is rapidly cooled to achieve the effect of oil-gas separation, namely, the mixed oil gas is separated into pyrolysis gas and pyrolysis oil water, at the moment, zinc steam in the mixed oil gas becomes solid of metal zinc, the solid of the metal zinc is reserved in the pyrolysis oil water, then the metal zinc and the pyrolysis oil are separated through the solid-liquid separation device, and therefore the metal zinc is recovered. Adopt the mode of shock cooling and/or direct cooling can realize quick cooling and separation, avoid the pyrolysis oil water that indirect cooling caused and metal zinc to condense and adhere on cooling device's lateral wall, cause equipment blocking scheduling problem. The pyrolysis gas and the pyrolysis oil water are gas-phase products generated after the waste paint residues containing zinc and the vinasse are pyrolyzed, because of different molecular weights, the large molecular weights are condensed into the pyrolysis oil, and the small molecular weights are not condensed to form the pyrolysis gas, and the pyrolysis oil can be used as fuels for self use or sale, so that the economic benefit is further improved.
In another embodiment of the invention, the pyrolytic carbon generated after the high-temperature anaerobic pyrolysis of the rotary bed pyrolysis device can be conveyed to a gasification furnace through a spiral discharging device for gasification to generate gasified coal gas, the gasified coal gas is mixed with air and then is combusted in a radiant tube inside the rotary bed pyrolysis device to provide a heat source for the rotary bed pyrolysis device, maintain the heat required by the pyrolysis of the vinasse and the zinc-containing waste paint slag, and further realize energy conservation and emission reduction.
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%)
TABLE 2 analysis of inorganic components in the zinc-containing waste paint residues (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 700 ℃ in a zone I, 800 ℃ in a zone II, 900 ℃ in a zone III, 1000 ℃ in a zone IV and the total pyrolysis time is controlled within 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 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, all the reduced metal zinc steam in the IV area of the hearth is discharged out of the rotary bed pyrolysis device together with oil gas generated by pyrolysis.
An oil-water direct cooling device is arranged at the outlet of the rotary bed pyrolysis device, and the separation of oil and water and pyrolysis gas is realized. At this time, the zinc metal is retained in the pyrolysis oil water. Then the zinc is recovered by a solid-liquid separation device. The pyrolysis gas and the pyrolysis oil water generated in the process can be used by oneself or sold after further treatment.
The heat source of the rotary bed pyrolysis device comes from gasification of the pyrolysis char. The pyrolytic carbon produced after pyrolysis of the rotary bed pyrolysis device is conveyed to the gasification furnace through the spiral discharging device and the conveying device to be gasified, and gasified coal gas is produced. The gasified gas and air are mixed in a radiant tube in the rotary bed pyrolysis device to be combusted for supplying heat, and the heat required by the pyrolysis of the vinasse and the zinc-containing waste paint slag is maintained.
The advantages of hybrid pyrolysis are illustrated below in specific experimental data.
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 average thermal value of the pyrolysis gas reaches 4903kcal/m when the pyrolysis is carried out by the material distribution mode shown in figure 4 or the material distribution mode shown in figure 53。
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 700 ℃ in the I zone, 800 ℃ in the II zone, 900 ℃ in the III zone, 1000 ℃ in the IV zone and 80min in the pyrolysis time. 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 an independent 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 600 ℃ in an I area 2, 750 ℃ in a II area 3, 850 ℃ in a III area 4, 950 ℃ in an IV area 5, and the total pyrolysis time is controlled within 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. And all the metal zinc in the IV area of the hearth is changed into zinc steam which is discharged out of the rotary bed pyrolysis device together with oil gas generated by pyrolysis. Wherein the heat source of the rotary bed pyrolysis device is from gasification of the pyrolysis carbon;
2) chilling the zinc-containing mixed oil gas by an oil-water direct cooling device to obtain pyrolysis gas and a zinc-containing solid-liquid mixture;
3) separating the zinc-containing solid-liquid mixture by a solid-liquid separation device to obtain the metal zinc and the pyrolysis oil water. The pyrolysis gas and the pyrolysis oil water generated in the process can be used by oneself or sold after further treatment, and the following specific experimental data are obtained in the embodiment.
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 average thermal value of pyrolysis gas reaches 4890kcal/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) vinasse and zinc-containing waste paint slag are conveyed into a rotary bed pyrolysis device through a single conveying pipeline and enter from a feeding area 1 shown in figure 3, then materials are distributed in a mode shown in figure 5, pyrolysis is carried out after the materials are distributed, the pyrolysis temperature in the rotary bed pyrolysis device is controlled in a partition control mode, the temperature of four regions is 750 ℃ in a region I, 800 ℃ in a region II, 950 ℃ in a region III, 1000 ℃ in a region IV, and the total pyrolysis time is controlled to be 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. In the IV area of the hearth, the metal zinc is completely changed into zinc vapor, and the oil gas generated along with pyrolysis is discharged out of the rotary bed pyrolysis device from a discharging area 6 shown in figure 3. Wherein the heat source of the rotary bed pyrolysis device is from gasification of the pyrolysis carbon;
2) chilling the zinc-containing mixed oil gas by an oil-water direct cooling device to obtain pyrolysis gas and a zinc-containing solid-liquid mixture;
3) separating the zinc-containing solid-liquid mixture by a solid-liquid separation device to obtain the metal zinc and the pyrolysis oil water. The pyrolysis gas and the pyrolysis oil water generated in the process can be used by oneself or sold after further treatment, and the following specific experimental data are obtained in the embodiment.
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 average thermal value of the pyrolysis gas reaches 4910kcal/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 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 paint slag is pyrolyzed independently are also solved; the zinc in the waste paint slag containing zinc can be used as a catalyst, no new additive is needed to be added, the effective treatment of hazardous waste can be realized, and the simple substance of metal zinc can be simply and feasibly obtained. Realizes the resource utilization of the metal zinc and the organic matters, also realizes the recovery of the metal zinc, and has remarkable overall economy of the system.
3. The regenerative rotary bed pyrolysis device is used for oxygen-free high-temperature pyrolysis, so that the system is high in heat efficiency, high-purity and high-quality pyrolysis gas and pyrolysis oil water can be obtained after pyrolysis, the pyrolysis gas and the pyrolysis oil water can be used or sold after further treatment, and the economic benefit is further improved.
4. The lees and the zinc-containing waste paint slag adopt different modes to mix the cloth, and a proper cloth mode can be selected according to actual needs, 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 vinasse, as shown in fig. 7, wherein the method can be completed by the system, the system comprises a spiral feeding device 12, a rotating bed pyrolysis device 13, an oil-gas separation device 14 and a solid-liquid separation device 15, the spiral feeding device 12 comprises a spiral feeding device inlet 121 and a spiral feeding device outlet 122; the rotary bed pyrolysis device 13 comprises a material inlet 131, a pyrolysis carbon discharge port 132, a mixed oil gas outlet 133 and a heat source inlet 134 which are connected with the spiral feeding device outlet 122; the oil-gas separation device 14 comprises a mixed oil-gas inlet 141 communicated with the mixed oil-gas outlet 133, a pyrolysis gas outlet 142 and a solid-liquid mixture outlet 143; the solid-liquid separation device 15 comprises a solid-liquid mixture inlet 151 communicated with the solid-liquid mixture outlet 143, a metal zinc collecting outlet 152 and a pyrolysis oil water collecting outlet 153. Preferably, the above system further includes a gasification furnace 16, the gasification furnace 16 includes a pyrolysis char inlet 161 and a gas outlet 162 communicated with the pyrolysis char discharge port 132, the gas outlet 162 is communicated with the heat source inlet 134 of the rotating bed pyrolysis device 13, the heat source inlet 134 is a gas inlet of a radiant tube installed inside the rotating bed pyrolysis device 13 for providing thermal radiation for pyrolysis, and the gas is burned in the radiant tube.
In another embodiment of the present invention, the system further includes an agitator 11, the agitator 11 includes an agitator outlet 111 communicated with an inlet 121 of the spiral feeding device, specifically, after the zinc-containing waste paint slag and the distiller's grains are fully mixed in the agitator 11, the mixture is conveyed to the rotating bed pyrolysis device 13 through the spiral feeding device 12, the material in the rotating bed pyrolysis device is distributed as shown in fig. 6, and the mixture of the zinc-containing waste paint slag and the distiller's grains is directly distributed on the furnace plate 9 and pyrolyzed in the rotating bed pyrolysis device 13. In the rotating bed pyrolysis device 13, the highest temperature of the rotating bed pyrolysis device 13 reaches 1000 ℃ in a partition temperature control mode, so that metal zinc in the zinc-containing waste paint slag is volatilized, and the oil gas enters a downstream treatment process along with high-temperature pyrolysis.
In conclusion, the zinc recovery system for co-processing the zinc-containing waste paint residues and the distiller's grains 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 zinc-containing mixed oil gas;
2) chilling the zinc-containing mixed oil gas to obtain pyrolysis gas and a zinc-containing solid-liquid mixture;
3) and separating the zinc-containing solid-liquid mixture by using a solid-liquid separation device to obtain metal zinc and pyrolysis oil water.
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: the temperature of 600-750 ℃, the temperature of 850-950 ℃ and the temperature of 950-1000 ℃, and the total time of the zinc-containing waste paint slag and the vinasse 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: 700 ℃, 800 ℃, 900 ℃ and 1000 ℃, and the time for the zinc-containing waste paint slag and the vinasse to pass through the four temperature control areas is 80 min.
6. The process for recovering zinc by co-processing the waste paint slag containing zinc and the distiller's grains according to claim 1, wherein the chilling mode is as follows: chilling the mixed oil gas through an oil-water direct cooling device.
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 char generated by pyrolysis of the rotary bed pyrolysis device is conveyed to a gasification furnace to be gasified, so as to generate gasified coal gas, and the gasified coal gas is mixed with air and then is combusted in a radiant tube inside the rotary bed pyrolysis device, so as to provide a heat source for the rotary bed pyrolysis device.
8. 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 inlet and a screw feeder outlet;
the rotary bed pyrolysis device comprises a material inlet, a pyrolysis carbon discharge port, a mixed oil gas outlet and a heat source inlet which are connected with the outlet of the spiral feeding device;
the oil-gas separation device comprises a mixed oil-gas inlet, a pyrolysis gas outlet and a solid-liquid mixture outlet which are communicated with the mixed oil-gas outlet;
the solid-liquid separation device comprises a solid-liquid mixture inlet, a metal zinc collection outlet and a pyrolysis oil-water collection outlet, wherein the solid-liquid mixture inlet is communicated with the solid-liquid mixture outlet.
9. The zinc-containing waste paint slag and distiller's grains co-processing zinc recovery system of claim 8, further comprising a gasification furnace, wherein the gasification furnace comprises a pyrolysis carbon inlet and a coal gas outlet which are communicated with the pyrolysis carbon discharge port, and the coal gas outlet is communicated with a heat source inlet of the rotating bed pyrolysis device.
10. The zinc recovery system for co-processing zinc-containing waste paint slag and distiller's grains according to claim 8 or 9, further comprising an agitator including an agitator outlet in communication with the inlet of the screw feeder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710481820.0A CN107163960A (en) | 2017-06-22 | 2017-06-22 | A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal |
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| CN201710481820.0A CN107163960A (en) | 2017-06-22 | 2017-06-22 | A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930010A (en) * | 2019-02-28 | 2019-06-25 | 昆明理工大学 | A method of organic matter in removing zinc hydrometallurgy solution |
| CN111996019A (en) * | 2020-07-13 | 2020-11-27 | 南通天地和环保科技有限公司 | Paint-containing waste cracking process for harmless and recycling treatment |
| CN114410321A (en) * | 2022-01-04 | 2022-04-29 | 江苏鹏飞集团股份有限公司 | Pyrolysis rotary kiln for treating waste paint containing zinc |
-
2017
- 2017-06-22 CN CN201710481820.0A patent/CN107163960A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930010A (en) * | 2019-02-28 | 2019-06-25 | 昆明理工大学 | A method of organic matter in removing zinc hydrometallurgy solution |
| CN109930010B (en) * | 2019-02-28 | 2020-12-15 | 昆明理工大学 | Method for removing organic matters in zinc hydrometallurgy solution |
| CN111996019A (en) * | 2020-07-13 | 2020-11-27 | 南通天地和环保科技有限公司 | Paint-containing waste cracking process for harmless and recycling treatment |
| CN114410321A (en) * | 2022-01-04 | 2022-04-29 | 江苏鹏飞集团股份有限公司 | Pyrolysis rotary kiln for treating waste paint containing zinc |
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