CN109456785B - Method for treating industrial hazardous waste HW11 and HW08 hazardous wastes - Google Patents
Method for treating industrial hazardous waste HW11 and HW08 hazardous wastes Download PDFInfo
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- CN109456785B CN109456785B CN201810997894.4A CN201810997894A CN109456785B CN 109456785 B CN109456785 B CN 109456785B CN 201810997894 A CN201810997894 A CN 201810997894A CN 109456785 B CN109456785 B CN 109456785B
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000002699 waste material Substances 0.000 claims abstract description 145
- 239000007787 solid Substances 0.000 claims abstract description 94
- 239000002199 base oil Substances 0.000 claims abstract description 67
- 239000000706 filtrate Substances 0.000 claims abstract description 39
- 238000004821 distillation Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000002844 melting Methods 0.000 claims abstract description 30
- 230000008018 melting Effects 0.000 claims abstract description 30
- 238000000197 pyrolysis Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000010426 asphalt Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000003245 coal Substances 0.000 claims abstract description 14
- 230000018044 dehydration Effects 0.000 claims abstract description 14
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000003921 oil Substances 0.000 claims description 18
- 230000003139 buffering effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004056 waste incineration Methods 0.000 description 3
- 239000011280 coal tar Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011273 tar residue Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/002—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal in combination with oil conversion- or refining processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
-
- 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
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
Abstract
The invention belongs to the technical field of industrial hazardous waste treatment, and particularly relates to a method for treating hazardous waste of HW11 and HW08 in industrial hazardous waste, which solves the problem of providing a method for treating hazardous waste of HW11 and HW08 by adopting indirect heating pyrolysis; the technical scheme is as follows: classifying HW11 dangerous wastes and HW08 dangerous wastes into solid dangerous wastes, viscous dangerous wastes and liquid dangerous wastes, respectively adding the solid dangerous wastes and the viscous dangerous wastes into a melting kettle, simultaneously adding an extracting agent into the melting kettle, indirectly heating and extracting, then carrying out centrifugal separation to obtain filtrate and filter residues, mixing the solid dangerous waste filtrate and the viscous dangerous waste filtrate with the liquid dangerous wastes to obtain a mixed material, and then carrying out dehydration and distillation to obtain light base oil, medium base oil, heavy base oil and soft asphalt; and pyrolyzing the solid dangerous waste filter residue and the viscous dangerous waste filter residue to obtain coal powder.
Description
Technical Field
The invention belongs to the technical field of industrial hazardous waste treatment, and particularly relates to a method for treating industrial hazardous waste HW11 and HW08 hazardous waste.
Background
"national records of hazardous waste (2016)" from 8/1/2016 ", wherein various tar residues generated during the coking process and coal tar residues generated in the gas generation and supply industry are definitely specified to belong to HW11 hazardous wastes; the hazardous waste of HW08 is regulated from oil sludge and oil foot produced in the oil extraction and refining process, waste oil residue produced in the oil processing industry, and the hazardous waste is toxic and inflammable. Some individual workshops are in order to make profit, and dangerous wastes are simply treated. Therefore, not only has potential safety hazard, but also is not beneficial to long-term development of the industry.
At present, the method for disposing the hazardous waste is incinerator incineration or cement kiln cooperative disposal, so that more useful components in the waste are directly burned, the waste is buried after being burned, resources are wasted, and the land occupation is increased.
Waste incineration process thermal oxidation process of combustible organic waste at high temperature is performed. Under the condition of complete combustion, the removal rate of organic matters can reach more than 99 percent. It is widely used for the treatment of hazardous waste because it is a relatively complete and thorough treatment method for decomposing and destroying waste. But the waste incineration treatment consumes a large amount of fuel, and the treatment cost is expensive; in order to prevent the pollution of the smoke generated by burning, a set of smoke treatment facilities is also required. Waste heat generated by incineration of waste cannot be recovered. There are many types of incinerators for waste incineration treatment, including grate-type incinerators, liquid jet-type incinerators, multi-stage incinerators, rotary kiln incinerators, fluidized bed incinerators, and slag incinerators, but these incinerators cannot achieve the purpose of harmless treatment of HW11 and HW08 hazardous wastes.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides a disposal method for performing harmless treatment on industrial hazardous waste HW11 and HW08 by pyrolyzing the hazardous waste HW11 and HW08 by indirect heating.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a disposal method of hazardous waste HW11 and HW08 comprises the steps of classifying hazardous waste HW11 and HW08 into solid hazardous waste, viscous hazardous waste and liquid hazardous waste, respectively adding the solid hazardous waste and the viscous hazardous waste into a melting kettle, simultaneously adding an extracting agent into the melting kettle, indirectly heating and extracting, then centrifugally separating to obtain filtrate and filter residue, mixing the solid hazardous waste filtrate and the viscous hazardous waste filtrate with the liquid hazardous waste to obtain a mixed material, and then dehydrating and distilling to obtain light base oil, medium base oil, heavy base oil and soft asphalt; and pyrolyzing the solid dangerous waste filter residue and the viscous dangerous waste filter residue to obtain coal powder, so that the dangerous waste is treated and reused.
The solid hazardous waste disposal steps are as follows: the method comprises the steps of crushing solid dangerous waste, sending the crushed solid dangerous waste into a solid melting kettle, adding an extracting agent into the solid melting kettle, heating the solid dangerous waste to 150-plus 200 ℃ through heat conduction oil, stirring for 10-30min, buffering the solid dangerous waste through a centrifugal buffer tank, then discharging the material to a centrifuge A, separating solid dangerous waste extract into solid dangerous waste filtrate and solid dangerous waste filter residue, enabling the solid dangerous waste filtrate to enter a mixed material tank through a raw material tank, and enabling the solid dangerous waste filter residue to enter a pyrolysis reaction kettle.
The viscous hazardous waste disposal steps are as follows: sending the viscous dangerous waste into a viscous melting kettle, adding an extracting agent into the viscous melting kettle, heating to 75-90 ℃ through heat conduction oil, stirring for 6-20min, buffering by a centrifugal buffer tank, discharging to a centrifuge B, separating the viscous dangerous waste extract into viscous dangerous waste filtrate and viscous dangerous waste filter residue, allowing the viscous dangerous waste filtrate to enter a mixed material tank through a raw material tank, and allowing the viscous dangerous waste filter residue to enter a pyrolysis reaction kettle.
The extractant is medium base oil.
The dehydration process comprises the steps of preheating the mixed materials by a preheater, raising the temperature to 120-150 ℃, entering a dehydration tower, and distilling water and light base oil.
The distillation process comprises two times of distillation, and the base oil steam and the maltha are fractionated by one time of distillation; and distilling the heavy base oil and the medium base oil by secondary distillation.
And part of the medium base oil produced by the secondary distillation is returned to the extraction process as a circulating extractant.
And carrying out flash evaporation modification on the soft asphalt to obtain heavy base oil and modified asphalt.
The solid hazardous waste filter residue and viscous hazardous waste filter residue pyrolysis process comprises the following steps: and conveying the solid dangerous waste filter residue and the viscous dangerous waste filter residue into a pyrolysis reaction kettle by a screw conveyor, heating to 370-450 ℃ for pyrolysis reaction, and cooling after the reaction to obtain coal powder.
The process flow of the invention is specifically as follows.
The method comprises the steps of crushing solid dangerous waste, sending the crushed solid dangerous waste into a solid melting kettle, adding an extracting agent into the solid melting kettle, heating the solid dangerous waste to 150-200 ℃ through heat conduction oil, stirring for 10-30min, buffering the solid dangerous waste through a centrifugal buffer tank, then discharging the material to a centrifuge A, separating solid dangerous waste extract into solid dangerous waste filtrate and solid dangerous waste filter residue, enabling the solid dangerous waste filtrate to enter a mixed material tank through a raw material tank, and enabling the solid dangerous waste filter residue to enter a pyrolysis reaction kettle.
Sending the viscous dangerous waste into a viscous melting kettle, adding an extracting agent into the viscous melting kettle, heating to 75-90 ℃ through heat conduction oil, stirring for 6-20min, buffering through a centrifugal buffer tank, discharging to a centrifuge B, separating the viscous dangerous waste extract into viscous dangerous waste filtrate and viscous dangerous waste filter residue, allowing the viscous dangerous waste filtrate to enter a mixed material tank through a raw material tank, and allowing the viscous dangerous waste filter residue to enter a pyrolysis reaction kettle.
The materials in the mixed material tank are sent into a heat exchanger 1 to be heated, then the light components separated in a dehydration tower enter a light base oil tank through heat exchange and cooling and oil-water separation, and a light base oil buffer tank is arranged between the light base oil tank and the oil-water separator.
The heavy component separated from the dehydration tower enters a heat exchanger 2 to be heated, enters a tube furnace to be heated for the second time, and then enters a primary distillation tower, the heavy component separated from the primary distillation tower is soft asphalt, and after one part of the soft asphalt enters the heat exchanger 1 to be cooled, the soft asphalt enters a flash evaporation process to be modified to prepare modified asphalt; the other part enters into a pitch circulating tank, and is heated by a tube furnace and enters into the primary distillation tower again.
The light component separated from the primary distillation tower enters a secondary distillation tower for distillation, the light component separated from the secondary distillation tower is medium base oil, the light component enters a medium base oil buffer circulating tank through heat exchange and temperature reduction, one part of the light component returns to the secondary distillation tower, the other part of the light component enters a medium base oil tank, and the medium base oil in the medium base oil tank can be used as an extracting agent for the extraction process of solid dangerous waste and viscous dangerous waste.
The heavy component separated from the secondary distillation tower is heavy base oil, and a part of the heavy base oil sequentially passes through a heat exchanger 2 and a heat exchanger 3 to be cooled and enters a heavy base oil buffer tank and finally enters a heavy base oil tank; the other part is directly cooled by the heat exchanger 4 and enters the heavy base oil tank.
Compared with the prior art, the invention has the beneficial effects that: the invention establishes a 'hazardous waste treatment center' in a unified way to completely treat according to the national requirements, is beneficial to strengthening the whole process supervision of the hazardous waste, is beneficial to implementing centralized treatment of the hazardous waste, prevents pollution and protects the environment. Aiming at HW11 and HW08 hazardous wastes, the invention utilizes the advanced treatment process to carry out harmless comprehensive utilization on the hazardous wastes, separates the components in the wastes by stages, and has more advanced recycling than the incineration process, thereby solving the problem of residue treatment of coal chemical enterprises in the region. The invention utilizes the distillation residues generated by coal chemical enterprises and the waste oil residues generated in the petroleum refining process, adopts the indirect heating pyrolysis separation technology, and avoids the secondary pollution generated by direct thermal desorption combustion because the heating medium is not directly contacted with the heated hazardous wastes. Performing thermal desorption and deoiling treatment on the coal tar residues, and treating the dangerous wastes to obtain high-temperature asphalt, coal powder, heavy base oil and other byproducts.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention is further illustrated by reference to the following examples.
Example 1
A disposal method for hazardous waste HW11 and HW08 classifies hazardous waste HW11 and HW08 into solid hazardous waste, viscous hazardous waste and liquid hazardous waste, the solid hazardous waste disposal steps are as follows: sending broken solid dangerous waste into a solid melting kettle, adding an extracting agent into the solid melting kettle, heating to 200 ℃ through heat conduction oil, stirring for 10min, discharging to a centrifuge A after buffering through a centrifugal buffer tank, separating solid dangerous waste extract into solid dangerous waste filtrate and solid dangerous waste filter residue, enabling the solid dangerous waste filtrate to enter a mixed material tank through a raw material tank, and enabling the solid dangerous waste filter residue to enter a pyrolysis reaction kettle.
The viscous hazardous waste disposal steps are as follows: sending the sticky dangerous waste into a sticky melting kettle, adding an extracting agent into the sticky melting kettle, heating to 90 ℃ through heat conduction oil, stirring for 6min, discharging to a centrifuge B after buffering through a centrifugal buffer tank, separating the sticky dangerous waste extract into sticky dangerous waste filtrate and sticky dangerous waste filter residue, allowing the sticky dangerous waste filtrate to enter a mixed material tank through a raw material tank, and allowing the sticky dangerous waste filter residue to enter a pyrolysis reaction kettle.
Mixing the solid hazardous waste filtrate, the viscous hazardous waste filtrate and the liquid hazardous waste to obtain a mixed material, and then dehydrating and distilling to obtain light base oil, medium base oil, heavy base oil and maltha; and pyrolyzing the solid dangerous waste filter residue and the viscous dangerous waste filter residue to obtain coal powder, so that the dangerous waste is treated and reused.
The extractant is medium base oil.
The dehydration process is characterized in that the mixed material is preheated by a preheater, the temperature is raised to 140 ℃, the mixed material enters a dehydration tower, and water and light base oil are distilled out.
The distillation process comprises two times of distillation, and the base oil steam and the maltha are fractionated by one time of distillation; and distilling the heavy base oil and the medium base oil by secondary distillation.
And part of the medium base oil produced by the secondary distillation is returned to the extraction process as a circulating extractant.
And carrying out flash evaporation modification on the soft asphalt to obtain heavy base oil and modified asphalt.
The solid hazardous waste filter residue and viscous hazardous waste filter residue pyrolysis process comprises the following steps: and conveying the solid dangerous waste filter residue and the viscous dangerous waste filter residue into a pyrolysis reaction kettle by a screw conveyor, heating to 450 ℃ for pyrolysis reaction, and cooling after the reaction to obtain coal powder.
Example 2
A disposal method for hazardous waste HW11 and HW08 classifies hazardous waste HW11 and HW08 into solid hazardous waste, viscous hazardous waste and liquid hazardous waste, the solid hazardous waste disposal steps are as follows: sending broken solid dangerous waste into a solid melting kettle, adding an extracting agent into the solid melting kettle, heating to 180 ℃ through heat conduction oil, stirring for 18min, discharging to a centrifuge A after buffering through a centrifugal buffer tank, separating solid dangerous waste extract into solid dangerous waste filtrate and solid dangerous waste filter residue, enabling the solid dangerous waste filtrate to enter a mixed material tank through a raw material tank, and enabling the solid dangerous waste filter residue to enter a pyrolysis reaction kettle.
The viscous hazardous waste disposal steps are as follows: sending the sticky dangerous waste into a sticky melting kettle, adding an extracting agent into the sticky melting kettle, heating to 85 ℃ through heat conduction oil, stirring for 12min, discharging to a centrifuge B after buffering through a centrifugal buffer tank, separating the sticky dangerous waste extract into sticky dangerous waste filtrate and sticky dangerous waste filter residue, allowing the sticky dangerous waste filtrate to enter a mixed material tank through a raw material tank, and allowing the sticky dangerous waste filter residue to enter a pyrolysis reaction kettle.
Mixing the solid hazardous waste filtrate, the viscous hazardous waste filtrate and the liquid hazardous waste to obtain a mixed material, and then dehydrating and distilling to obtain light base oil, medium base oil, heavy base oil and maltha; and pyrolyzing the solid dangerous waste filter residue and the viscous dangerous waste filter residue to obtain coal powder, so that the dangerous waste is treated and reused.
The extractant is medium base oil.
The dehydration process is characterized in that the mixed material is preheated by a preheater, the temperature is raised to 140 ℃, the mixed material enters a dehydration tower, and water and light base oil are distilled out.
The distillation process comprises two times of distillation, and the base oil steam and the maltha are fractionated by one time of distillation; and distilling the heavy base oil and the medium base oil by secondary distillation.
And part of the medium base oil produced by the secondary distillation is returned to the extraction process as a circulating extractant.
And carrying out flash evaporation modification on the soft asphalt to obtain heavy base oil and modified asphalt.
The solid hazardous waste filter residue and viscous hazardous waste filter residue pyrolysis process comprises the following steps: and conveying the solid dangerous waste filter residue and the viscous dangerous waste filter residue into a pyrolysis reaction kettle by a screw conveyor, heating to 380 ℃ for pyrolysis reaction, and cooling after the reaction to obtain coal powder.
Example 3
A disposal method for hazardous waste HW11 and HW08 classifies hazardous waste HW11 and HW08 into solid hazardous waste, viscous hazardous waste and liquid hazardous waste, the solid hazardous waste disposal steps are as follows: sending broken solid dangerous waste into a solid melting kettle, adding an extracting agent into the solid melting kettle, heating to 150 ℃ through heat conduction oil, stirring for 30min, discharging to a centrifuge A after buffering through a centrifugal buffer tank, separating solid dangerous waste extract into solid dangerous waste filtrate and solid dangerous waste filter residue, enabling the solid dangerous waste filtrate to enter a mixed material tank through a raw material tank, and enabling the solid dangerous waste filter residue to enter a pyrolysis reaction kettle.
The viscous hazardous waste disposal steps are as follows: sending the sticky dangerous waste into a sticky melting kettle, adding an extracting agent into the sticky melting kettle, heating to 75 ℃ through heat conduction oil, stirring for 20min, discharging to a centrifuge B after buffering through a centrifugal buffer tank, separating the sticky dangerous waste extract into sticky dangerous waste filtrate and sticky dangerous waste filter residue, allowing the sticky dangerous waste filtrate to enter a mixed material tank through a raw material tank, and allowing the sticky dangerous waste filter residue to enter a pyrolysis reaction kettle.
Mixing the solid hazardous waste filtrate, the viscous hazardous waste filtrate and the liquid hazardous waste to obtain a mixed material, and then dehydrating and distilling to obtain light base oil, medium base oil, heavy base oil and maltha; and pyrolyzing the solid dangerous waste filter residue and the viscous dangerous waste filter residue to obtain coal powder, so that the dangerous waste is treated and reused.
The extractant is medium base oil.
The dehydration process is characterized in that the mixed material is preheated by a preheater, the temperature is raised to 120 ℃, the mixed material enters a dehydration tower, and water and light base oil are distilled out.
The distillation process comprises two times of distillation, and the base oil steam and the maltha are fractionated by one time of distillation; and distilling the heavy base oil and the medium base oil by secondary distillation.
And part of the medium base oil produced by the secondary distillation is returned to the extraction process as a circulating extractant.
And carrying out flash evaporation modification on the soft asphalt to obtain heavy base oil and modified asphalt.
The solid hazardous waste filter residue and viscous hazardous waste filter residue pyrolysis process comprises the following steps: and conveying the solid dangerous waste filter residue and the viscous dangerous waste filter residue into a pyrolysis reaction kettle by a screw conveyor, heating to 370 ℃ for pyrolysis reaction, and cooling after the reaction to obtain coal powder.
The above embodiments are merely illustrative of the principles of the present invention and its effects, and do not limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.
Claims (9)
1. A disposal method of industrial hazardous waste HW11 and HW08 hazardous wastes is characterized in that: classifying HW11 dangerous wastes and HW08 dangerous wastes into solid dangerous wastes, viscous dangerous wastes and liquid dangerous wastes, respectively adding the solid dangerous wastes and the viscous dangerous wastes into a melting kettle, simultaneously adding an extracting agent into the melting kettle, indirectly heating and extracting, then carrying out centrifugal separation to obtain filtrate and filter residues, mixing the solid dangerous waste filtrate and the viscous dangerous waste filtrate with the liquid dangerous wastes to obtain a mixed material, and then carrying out dehydration and distillation to obtain light base oil, medium base oil, heavy base oil and soft asphalt; and pyrolyzing the solid dangerous waste filter residue and the viscous dangerous waste filter residue to obtain coal powder, so that the dangerous waste is treated and reused.
2. The method of claim 1, wherein the hazardous waste of HW11 and HW08 is disposed in a container of a waste container, comprising: the solid hazardous waste disposal steps are as follows: the method comprises the steps of crushing solid dangerous waste, sending the crushed solid dangerous waste into a solid melting kettle, adding an extracting agent into the solid melting kettle, heating the solid dangerous waste to 150-plus 200 ℃ through heat conduction oil, stirring for 10-30min, buffering the solid dangerous waste through a centrifugal buffer tank, then discharging the material to a centrifuge A, separating solid dangerous waste extract into solid dangerous waste filtrate and solid dangerous waste filter residue, enabling the solid dangerous waste filtrate to enter a mixed material tank through a raw material tank, and enabling the solid dangerous waste filter residue to enter a pyrolysis reaction kettle.
3. The method of claim 1, wherein the hazardous waste of HW11 and HW08 is disposed in a container of a waste container, comprising: the viscous hazardous waste disposal steps are as follows: sending the viscous dangerous waste into a viscous melting kettle, adding an extracting agent into the viscous melting kettle, heating to 75-90 ℃ through heat conduction oil, stirring for 6-20min, buffering by a centrifugal buffer tank, discharging to a centrifuge B, separating the viscous dangerous waste extract into viscous dangerous waste filtrate and viscous dangerous waste filter residue, allowing the viscous dangerous waste filtrate to enter a mixed material tank through a raw material tank, and allowing the viscous dangerous waste filter residue to enter a pyrolysis reaction kettle.
4. The method of claim 1, wherein the hazardous waste of HW11 and HW08 is disposed in a container of a waste container, comprising: the extractant is medium base oil.
5. The method of claim 1, wherein the hazardous waste of HW11 and HW08 is disposed in a container of a waste container, comprising: the dehydration process comprises the steps of preheating the mixed materials by a preheater, raising the temperature to 120-150 ℃, entering a dehydration tower, and distilling water and light base oil.
6. The method of claim 1, wherein the hazardous waste of HW11 and HW08 is disposed in a container of a waste container, comprising: the distillation process comprises two times of distillation, and the base oil steam and the maltha are fractionated by one time of distillation; and distilling the heavy base oil and the medium base oil by secondary distillation.
7. The method of claim 6, wherein the hazardous waste in the industrial hazardous waste HW11 and HW08 is treated by the following steps: and part of the medium base oil produced by the secondary distillation is returned to the extraction process as a circulating extractant.
8. The method for disposing hazardous waste of HW11 and HW08 in accordance with claim 1 or 5, wherein the hazardous waste is selected from the group consisting of: and carrying out flash evaporation modification on the soft asphalt to obtain heavy base oil and modified asphalt.
9. The method of claim 1, wherein the hazardous waste of HW11 and HW08 is disposed in a container of a waste container, comprising: the solid hazardous waste filter residue and viscous hazardous waste filter residue pyrolysis process comprises the following steps: and conveying the solid dangerous waste filter residue and the viscous dangerous waste filter residue into a pyrolysis reaction kettle by a screw conveyor, heating to 370-450 ℃ for pyrolysis reaction, and cooling after the reaction to obtain coal powder.
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| CN201810997894.4A CN109456785B (en) | 2018-08-29 | 2018-08-29 | Method for treating industrial hazardous waste HW11 and HW08 hazardous wastes |
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| CN110903852B (en) * | 2019-12-16 | 2021-11-23 | 山东科技大学 | Method for recovering Fischer-Tropsch synthetic wax |
| CN111662736A (en) * | 2020-06-04 | 2020-09-15 | 平罗县华昌再生能源有限公司 | Production process for preparing asphalt by utilizing coal cinder refined distillation |
| CN111701509A (en) * | 2020-06-10 | 2020-09-25 | 宁波大地化工环保有限公司 | Low-flashover-risk waste liquid mixing pretreatment device and treatment method thereof |
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| US4663028A (en) * | 1985-08-28 | 1987-05-05 | Foster Wheeler Usa Corporation | Process of preparing a donor solvent for coal liquefaction |
| FR2790479B1 (en) * | 1999-03-02 | 2001-04-13 | Commissariat Energie Atomique | PROCESS FOR TREATING AN OIL USING A SUPERCRITICAL FLUID |
| CN102050556B (en) * | 2009-10-30 | 2013-02-13 | 中国石油天然气股份有限公司 | Treatment method of oily sludge |
| CN102399565B (en) * | 2011-09-30 | 2014-05-21 | 神华集团有限责任公司 | Method for extracting heavy liquefied oil from residue of coal direct liquefaction, extracted heavy liquefied oil, and application thereof |
| CN106929097A (en) * | 2017-01-24 | 2017-07-07 | 玉门市润泽环保再生能源新技术有限公司 | A kind of HW08 waste mineral oils processing system |
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