CN113736497A - Resource method for cooperative disposal of hazardous waste by coke oven - Google Patents
Resource method for cooperative disposal of hazardous waste by coke oven Download PDFInfo
- Publication number
- CN113736497A CN113736497A CN202111151010.1A CN202111151010A CN113736497A CN 113736497 A CN113736497 A CN 113736497A CN 202111151010 A CN202111151010 A CN 202111151010A CN 113736497 A CN113736497 A CN 113736497A
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- waste
- coal
- hazardous waste
- coking
- hazardous
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000000571 coke Substances 0.000 title claims abstract description 34
- 239000003245 coal Substances 0.000 claims abstract description 45
- 239000002699 waste material Substances 0.000 claims abstract description 42
- 238000004939 coking Methods 0.000 claims abstract description 32
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004484 Briquette Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 239000010815 organic waste Substances 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000000575 pesticide Substances 0.000 claims description 2
- 239000002006 petroleum coke Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000012286 potassium permanganate Substances 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- 239000010802 sludge Substances 0.000 claims description 2
- 239000010887 waste solvent Substances 0.000 claims description 2
- 239000010920 waste tyre Substances 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims 1
- 239000010705 motor oil Substances 0.000 claims 1
- 239000011280 coal tar Substances 0.000 abstract description 6
- 239000011285 coke tar Substances 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000012668 chain scission Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000011269 tar Substances 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
- 239000010913 used oil 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
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/08—Methods of shaping, e.g. pelletizing or briquetting without the aid of extraneous binders
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a comprehensive utilization method for disposing hazardous waste by coke oven, which converts the hazardous waste into coke and coal tar by coke oven cooperative disposal under the action of a catalyst. The process mainly comprises a pretreatment process and a coking process, wherein the pretreatment process comprises the steps of analyzing, matching, crushing and the like on the hazardous waste, the hazardous waste in different forms is pretreated by adopting different devices, the hazardous waste is firstly coarsely crushed and then finely crushed, and the solid hazardous waste is dispersed by adopting a high-speed dispersion machine; crushing the liquid dangerous waste and the semi-solid dangerous waste after adopting mixed coal, and controlling the grain diameter to be less than or equal to 3 mm; on the premise of not influencing the quality of coke, the blended coal, the hazardous waste and the catalyst are stirred, uniformly mixed and pressed into spherical coal, and then the spherical coal is mixed with the blended coal for coking, wherein the pollutant emission in the coking process meets the control standard, and the coke and the coal tar meet the product standard.
Description
Technical Field
The invention relates to a comprehensive utilization method of hazardous waste, in particular to a comprehensive utilization method of hazardous waste by coke oven cooperative disposal, belonging to the technical field of waste recycling.
Background
The hazardous waste often contains a large amount of organic toxic and harmful components and heavy metals, the conventional disposal method is incineration or landfill, the resource utilization process is less, the waste of resource value is caused, and the environment is damaged, the coke oven is used as an industrial high-temperature kiln, the highest temperature of a carbonization chamber is 1150 ℃, the temperature of a combustion chamber is 1400 ℃, and the hazardous waste is a very good purification condition. Under do not influencing coke product quality as the prerequisite, the coke oven deals with hazardous waste in coordination, hazardous waste can turn into coke and coal tar, has avoided the generation of dioxin again, has more the environment-friendly, and product coke is when the later stage is used for blast furnace metallurgy, and the heavy metal is retrieved by pig iron, and remaining a small amount of heavy metal is embedded by vitreous form melting slag, compares the cement kiln and obtains the cement that contains the heavy metal in coordination and has more the security, is more than the cement kiln deals with better technique in coordination.
At present, domestic patents relate to patents for disposing hazardous wastes such as tar residues and asphalt residues by using a coke oven, but no process for disposing a wide variety of hazardous wastes exists, and the process for cooperatively disposing a plurality of types of hazardous wastes by using the coke oven has high requirements due to various types of hazardous wastes, so that the process scheme is a problem which needs to be solved urgently. The process meets the relevant national standard of hazardous waste.
The method for converting various dangerous wastes into coke and coal tar by adopting the coke oven to cooperatively treat under the action of the catalyst has not been reported.
Disclosure of Invention
The invention aims to provide a comprehensive utilization method for disposing hazardous waste by coke oven, which converts the hazardous waste with complex composition into coke and coal tar by utilizing the oxygen-free high-temperature environment of the coke oven and the catalytic cracking chain scission technology, and mainly solves the equipment and process problems in the process.
The method for disposing hazardous waste by coke oven is characterized by comprising the following steps: 1. alternative raw materials, such as providing fixed carbon components, can produce coke, such as waste plastics, waste rubber, waste tires, waste activated carbon, waste leather, petroleum coke, oil sludge, printing ink, waste paint, adhesives, glue, and the like; liquids that can produce coal tar, such as used oils, used chemicals, and reagents; 2. the fuel is replaced, theoretically, the waste with a low boiling point and a certain heat value can be used as the coke oven to be used as the fuel, and can generate coal gas such as alcohols, esters, waste pesticides, waste solvents, organic waste and the like; 3. substitute correction raw materials, such as moisture-conditioning blended coal, such as waste emulsion, laboratory waste liquid, such as pH adjustment, such as waste acid, waste alkali liquid, hazardous waste such as ash adjustment, such as metal-containing waste residue, and the like; 4. for the purpose of achieving the final disposal of the waste, for example, some waste which has a low calorific value and contains substantially no available chemical components in the components can also be disposed of synergistically in the coke oven.
Blending a certain amount of dangerous waste and a catalyst into blended coal to serve as coking coal, and feeding the coking coal into a coke oven for coking.
The main process for disposing hazardous waste by coke oven includes pretreatment and coking process, the pretreatment process includes the steps of analyzing raw material composition, compatibility and crushing, the coking process is to mix the blended coal, the compatible hazardous waste and the catalyst uniformly to prepare the briquette, the briquette is sent to a coal storage bin, and then coking is carried out according to the original process of the coking plant.
The coke oven can be used for cooperatively treating hazardous wastes, and the harmful substances can be more efficiently purified by adopting a catalyst.
Detailed Description
A method for comprehensively utilizing hazardous waste by using a hazardous waste-doped coke oven to cooperatively dispose mainly comprises pretreatment and a coking process, wherein the coking process is carried out according to the original process of a coking plant, and the pretreatment process comprises the following steps:
a. pretreating dangerous waste, wherein the pretreatment comprises the steps of analyzing composition, different forms, compatibility, crushing and the like, the dangerous waste in different forms is pretreated by different equipment, coarse crushing is carried out firstly, then fine crushing is carried out, solid dangerous waste is treated by a high-speed dispersion machine, liquid dangerous waste and semisolid dangerous waste, and the particle size of the crushed dangerous waste is controlled to be less than or equal to 3 mm;
b. according to the similar requirements of the components of the blended coal, on the premise of not having obvious influence on the coke product, respectively taking the crushed blended coal, a proper amount of catalyst and compatible hazardous waste, and uniformly stirring and mixing by adopting a double helix to obtain a mixture of the blended coal and the hazardous waste, wherein the mass ratio of the hazardous waste to the blended coal in the mixture is 1:0.1-1: 30;
c. preparing briquette, namely preparing the mixture with hazardous wastes into spherical briquette;
d. sending the molded coal to a coal storage bin, and mixing the molded coal with the blended coal;
e. coking, wherein the coking process is carried out according to the original process of a coking plant, mixed coal containing a certain proportion of hazardous wastes is sent into a coke oven for coking, the coking temperature is 1000 +/-50 ℃, and the coking time is 20 +/-2 hours;
examples
The present invention is further illustrated by the following specific examples.
Typical mixed hazardous waste compositions are: 45 percent of paint slag, 45 percent of tar slag, 9 percent of waste packaging material, 1 percent of laboratory waste liquid and a proper amount of catalyst, wherein the catalyst is Co-Mo-V/Al2O3The auxiliary oxidant is KMnO4The dosage of the composite catalyst is 0.02 percent of the hazardous waste slag. 90% of blended coal is adopted, the blended coal is composed of gas coal, fat coal, coking coal, 1/3 coking coal and lean coal, the gas coal accounts for 35% (mass percent), the fat coal accounts for 15% (wt,%), the coking coal accounts for 15% (wt,%), the 1/3 coking coal accounts for 20% (wt,%), the lean coal accounts for 15% (wt,%), 10% of mixed hazardous waste is added and uniformly mixed, coal is molded by pressurization, 20% of molded coal is taken and mixed with 80% of the blended coal, and then coking coal is obtained.
The 20 percent blending coal mixed with the hazardous waste particle coal has obvious improvement effect on the mechanical strength and the thermal strength (CRI, CSR) of the coke, can broaden the coal for coking, reduces the blending coal cost and the coke production cost, and has the performance indexes shown in the following table.
| Item | Moisture content | Ash content | Volatile matter | Sulfur | Fixed carbon | M40 | M10 | Reactivity | Strength after reaction | Total coke rate |
| Numerical value | 3.8 | 12.76 | 1.09 | 0.77 | 82.22 | 78.2 | 9.2 | 30 | 48.2 | 77.8 |
The content of dioxin and heavy metal in tail gas of a heating chamber in the coking process is below the detection limit, most heavy metal in raw materials is left in coke, the rest heavy metal is removed by a tail gas condensation and purification facility, the influence of doping of hazardous waste on harmful substances such As the heavy metal in the tail gas is small, and the emission concentration of pollutants such As Hg, Cd, As + Ni, Pb, Cr + Sn + Sb + Cu + Mn, dioxin and the like in the waste gas is obviously lower than the emission standard value of the pollutants in the waste gas for burning the hazardous waste specified in GB18484-2001 hazardous waste burning pollution control Standard.
Claims (4)
1. A comprehensive utilization method for disposing hazardous waste by coke oven is characterized in that the coke oven is used for disposing the appropriate hazardous waste, and the types of the waste which is suitable for disposing by coke oven are as follows: waste paint residues, waste plastics, waste rubber, waste tires, waste activated carbon, waste leather, petroleum coke, oil sludge, printing ink, waste paint, waste engine oil, waste chemicals and reagents, waste pesticides, waste solvents, organic waste, waste emulsions, laboratory waste liquids, waste acids, waste alkali liquids, and other hazardous waste which can be disposed of.
2. The coking coal of claim 1, wherein the blending coal incorporates a quantity of hazardous waste and a catalyst as the coking coal.
3. The comprehensive utilization method of hazardous wastes by coke oven cooperative disposal according to claim 1, wherein the process comprises pretreatment and coking process, the pretreatment process comprises the steps of raw material composition analysis, compatibility analysis, crushing and the like, the coking process is to mix a part of blended coal, the compatible hazardous wastes and a catalyst uniformly to prepare briquette, send the briquette to a coal storage bin, and then carry out normal process coking according to the original process of a coking plant.
4. The catalyst of claim 3 being Co-Mo-V/Al2O3The auxiliary oxidant is KMnO4The dosage of the composite catalyst is 0.01-2% of the hazardous waste slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111151010.1A CN113736497A (en) | 2021-09-29 | 2021-09-29 | Resource method for cooperative disposal of hazardous waste by coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111151010.1A CN113736497A (en) | 2021-09-29 | 2021-09-29 | Resource method for cooperative disposal of hazardous waste by coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113736497A true CN113736497A (en) | 2021-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111151010.1A Pending CN113736497A (en) | 2021-09-29 | 2021-09-29 | Resource method for cooperative disposal of hazardous waste by coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113736497A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309012A (en) * | 2022-01-05 | 2022-04-12 | 张众益 | Method for improving combustion characteristics of organic hazardous waste by using strong shearing force |
| CN116060126A (en) * | 2023-01-17 | 2023-05-05 | 扬州大学广陵学院 | Method for preparing selenium catalyst by polylactic acid coking |
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| JP2002226864A (en) * | 2001-01-31 | 2002-08-14 | Nippon Steel Corp | Method for producing coke using waste plastic |
| CN102719264A (en) * | 2011-03-29 | 2012-10-10 | 鞍钢股份有限公司 | High-reactivity coke and manufacture method thereof |
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| CN108570331A (en) * | 2017-03-08 | 2018-09-25 | 上海梅山钢铁股份有限公司 | A kind of coke and coking process of adapted scrap rubber |
| CN111635775A (en) * | 2020-06-09 | 2020-09-08 | 邢台旭阳化工有限公司 | Method for coking by using phthalic anhydride rectification residues |
| CN111662735A (en) * | 2020-05-29 | 2020-09-15 | 鞍钢股份有限公司 | Coking and coal blending method for preparing metallurgical coke by using waste plastics |
| CN112980483A (en) * | 2021-02-25 | 2021-06-18 | 东北大学 | Method for preparing high-reactivity coke by cold pressing of steel slag |
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-
2021
- 2021-09-29 CN CN202111151010.1A patent/CN113736497A/en active Pending
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| CN116060126A (en) * | 2023-01-17 | 2023-05-05 | 扬州大学广陵学院 | Method for preparing selenium catalyst by polylactic acid coking |
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