CN112251253A - Method for chemical recovery and circulation of waste plastics - Google Patents
Method for chemical recovery and circulation of waste plastics Download PDFInfo
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- CN112251253A CN112251253A CN202010958283.6A CN202010958283A CN112251253A CN 112251253 A CN112251253 A CN 112251253A CN 202010958283 A CN202010958283 A CN 202010958283A CN 112251253 A CN112251253 A CN 112251253A
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- waste plastics
- recycling
- catalyst
- plastic
- naphtha
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- 239000004033 plastic Substances 0.000 title claims abstract description 58
- 229920003023 plastic Polymers 0.000 title claims abstract description 58
- 239000002699 waste material Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000126 substance Substances 0.000 title claims abstract description 16
- 238000011084 recovery Methods 0.000 title description 9
- 238000004064 recycling Methods 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 10
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 10
- 239000002734 clay mineral Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000000197 pyrolysis Methods 0.000 claims description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012263 liquid product Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 229910000423 chromium oxide Inorganic materials 0.000 claims 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical group O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims 1
- 229910001928 zirconium oxide Inorganic materials 0.000 claims 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 11
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000004927 clay Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 238000000967 suction filtration Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
Classifications
-
- 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
- C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
-
- 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
- C10G1/08—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal with moving catalysts
- C10G1/086—Characterised by the catalyst used
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
本发明属于固体废弃物资源化、无害化处理技术领域，具体涉及一种废塑料化学回收循环利用的方法，使用开发的金属氧化物改性粘土矿物催化剂，实现了废塑料制备高产率高品质塑料单体生产原料‑石脑油的技术路线，从而无缝衔接现有石化行业塑料生产线，助力实现塑料循环经济。本发明提供的金属氧化物改性粘土矿物催化剂活性高、稳定性好，石脑油的综合收率在70％以上，烷烃含量大于65％，芳烃含量低于5％。The invention belongs to the technical field of solid waste recycling and harmless treatment, and in particular relates to a method for chemical recycling and recycling of waste plastics. The developed metal oxide-modified clay mineral catalyst is used to realize high-yield and high-quality waste plastics preparation. The technical route of the raw material for the production of plastic monomers—naphtha, so as to seamlessly connect the existing plastic production lines in the petrochemical industry and help realize the plastic circular economy. The metal oxide modified clay mineral catalyst provided by the invention has high activity and good stability, the comprehensive yield of naphtha is more than 70%, the content of alkane is more than 65%, and the content of aromatic hydrocarbon is less than 5%.
Description
Technical Field
The invention belongs to the technical field of recycling and harmless treatment of solid wastes, and particularly relates to a method for recycling waste plastics chemically.
Background
Currently, waste plastic pollution has gradually come to threaten our daily lives, news like plastic around cities and the sea is not outstanding, and China produces about 10 million tons of waste plastics every year, and the waste is not properly treated so that each person intakes about 5g of micro plastic equivalent to one credit card every week. At present, there are four main approaches to waste plastic treatment: landfill method, incineration method, mechanical recovery method and chemical recovery method. Landfill and incineration not only cause a great deal of pollution, but also are extreme wastes of resources; mechanical recycling is a common recycling method at present, but has fatal defects of low quality of recycled plastics, limited recycling times and the like, and finally, the plastics still enter a landfill or incineration utilization process as wastes; chemical recycling is considered to be the most promising technology, which can convert waste plastics into other high-value products without causing atmospheric pollution during production.
The main mode of chemical recovery is high-temperature pyrolysis of waste plastics, which can convert plastic polymers into hydrocarbon compounds with different carbon chain lengths for producing energy products such as gasoline, diesel oil, aviation kerosene and gas, and is the best way (gasoline, diesel oil, aviation kerosene and the like) for efficient and clean recycling of waste plastics which is widely researched at present. The plastic pyrolysis can not only solve the problem of environmental pollution of waste plastics, but also greatly reduce the cost of fuel oil production raw materials, and has good economic and social benefits.
Although the existing technology for preparing fuel oil by pyrolysis can solve the problem of plastic pollution, the output fuel oil is finally combusted, the requirement of original plastic cannot be offset, the closed-loop management of the plastic industry cannot be realized, and the great contribution to the recycling economy of the plastic cannot be made.
Disclosure of Invention
The invention aims to provide a novel plastic chemical recovery circulation way aiming at the defects of the existing plastic pyrolysis recovery route, develop a corresponding high-activity catalyst, really realize the chemical recovery circulation from waste plastic to new plastic and solve the problem of low mechanical recovery quality and unsustainable pain.
The invention is realized by the following technical scheme.
The invention mixes waste plastic fragments and catalyst according to the proportion of 1: 0.5-5, adding 40-80 wt.% of silicon carbide as a microwave absorbent, quickly heating to 500-600 ℃ in a microwave pyrolysis reactor, collecting a liquid product, namely naphtha, from pyrolysis steam through a multistage condenser, wherein non-condensable gas can be used for generating electricity and generating heat/electricity; naphtha can be used as a raw material source of plastic production monomers, and a closed-loop industrial chain of plastics is realized.
The catalyst used in the process is a metal oxide modified clay mineral catalyst, is the core of naphtha production, and can obviously improve the alkane content in oil and simultaneously reduce the aromatic hydrocarbon content.
The metal oxide in the core catalyst for producing naphtha is alumina, ferric oxide, zirconia, titania or chromic oxide, and the carrier is any one of kaolin and montmorillonite. The metal source of the catalyst is hydroxyl metal ions, the preparation method is a hydroxyl metal ion column supporting method, and the proportion of the metal oxide is 1-20% (based on the weight of the catalyst).
The invention has the following advantages.
(1) The chemical recycling technology realizes the conversion from waste plastics to new plastics, accords with the definition of real recycling, can be comparable with the current popular mechanical recycling method, but solves the key problems of low quality, limited recycling times, unsustainability and the like of the plastic recycled by the mechanical recycling method.
(2) Compared with the technology for preparing fuel oil by pyrolyzing waste plastics, the chemical recycling technology provided by the invention can offset the requirement on the original plastics and makes a great contribution to the recycling economy of the plastics.
(3) Based on the modified clay mineral catalyst provided by the invention, the comprehensive yield of naphtha, which is a raw material for producing plastics, is more than 70%, the alkane content is more than 65%, the aromatic hydrocarbon content is less than 5%, the color is pure, the quality is excellent, and the catalyst is seamlessly jointed with the production line of the existing petrochemical industry.
Detailed Description
The invention will be further illustrated by the following examples.
Example 1.
The new way of recycling the waste plastics chemically comprises the following process steps.
(1) Adding aluminum nitrate into a solution of absolute ethyl alcohol, sodium hydroxide and the like to prepare a hydroxy metal pillared agent, then dropwise adding the pillared agent into a 3% clay suspension under the conditions of 80 degrees, pH 4 and metal/clay of 2mmmol/g, reacting for 2 hours, aging for 2 days in a constant-temperature water bath of 60 degrees, carrying out suction filtration, washing and drying for later use.
(2) The plastic chips were mixed with the metal oxide modified clay mineral catalyst prepared above according to a ratio of 1: 0.5, mixing uniformly, mixing with 40 wt% of silicon carbide, and adding into a microwave reactor together.
(3) After nitrogen is introduced to remove air in the reaction system, microwave equipment is started, the power is set to be 1kW, and reactants are heated to 500 ℃.
(4) Collecting the condensable part of the pyrolysis steam generated in the step (3) by a condensing device to obtain high-quality naphtha, wherein the comprehensive yield of product oil is 75%, and the GC-MS detection result shows that C in the components5-C12Alkane content 70%, and C5-C12The aromatic hydrocarbon content is only 3 percent, and the aromatic hydrocarbon can replace naphtha in the petroleum industry to be used as a plastic production raw material; the non-condensable part may be used for electricity/heat generation.
Example 2.
The new way of recycling the waste plastics chemically comprises the following process steps.
(1) Adding ferric nitrate into solutions of absolute ethyl alcohol, sodium hydroxide and the like to prepare a hydroxy metal pillared agent, then dropwise adding the pillared agent into a 3% clay suspension under the conditions of 80 degrees, pH 5 and metal/clay of 4mmmol/g, reacting for 2 hours, aging for 2 days in a constant-temperature water bath of 60 degrees, carrying out suction filtration, washing and drying for later use.
(2) The plastic chips were mixed with the metal oxide modified clay mineral catalyst prepared above according to a ratio of 1: 1, then mixing with 60 wt% of silicon carbide, and adding the mixture into a microwave reactor.
(3) After nitrogen is introduced to remove air in the reaction system, microwave equipment is started, the power is set to be 1kW, and reactants are heated to 550 ℃.
(4) Collecting the condensable part of the pyrolysis steam generated in the step (3) by a condensing device to obtain high-quality naphtha, wherein the comprehensive yield of product oil is 70%, and the GC-MS detection result shows that C in the components5-C12Alkane content 65%, and C5-C12The aromatic hydrocarbon content is only 4 percent, and the aromatic hydrocarbon can replace naphtha in the petroleum industry to be used as a plastic production raw material; the non-condensable part may be used for electricity/heat generation.
Example 3.
The new way of recycling the waste plastics chemically comprises the following process steps.
(1) Adding zirconium nitrate into solutions of absolute ethyl alcohol, sodium hydroxide and the like to prepare a hydroxy metal pillared agent, then dropwise adding the pillared agent into a 3% clay suspension under the conditions of 80 degrees, pH 5 and 6mmmol/g of metal/clay, reacting for 2 hours, aging for 2 days in a constant-temperature water bath of 60 degrees, carrying out suction filtration, washing and drying for later use.
(2) The plastic chips were mixed with the metal oxide modified clay mineral catalyst prepared above according to a ratio of 1: 1.5, mixing uniformly, mixing with 70 wt% of silicon carbide, and adding into a microwave reactor together.
(3) After nitrogen is introduced to remove air in the reaction system, microwave equipment is started, the power is set to be 1kW, and reactants are heated to 600 ℃.
(4) Collecting the condensable part of the pyrolysis steam generated in the step (3) by a condensing device to obtain high-quality naphtha, wherein the comprehensive yield of product oil is 72%, and the GC-MS detection result shows that C in the components5-C12Alkane content 66%, and C5-C12The aromatic hydrocarbon content is only 2 percent, and the aromatic hydrocarbon can replace naphtha in the petroleum industry to be used as a plastic production raw material; the non-condensable part may be used for electricity/heat generation.
Example 4.
The new way of recycling the waste plastics chemically comprises the following process steps.
(1) Adding titanium sulfate into solutions such as absolute ethyl alcohol and sodium hydroxide to prepare a hydroxy metal pillared agent, then dropwise adding the pillared agent into a 3% clay suspension under the conditions of 80 degrees, pH 4 and metal/clay of 8mmmol/g, reacting for 2 hours, aging for 2 days in a constant-temperature water bath of 60 degrees, carrying out suction filtration, washing and drying for later use.
(2) The plastic chips were mixed with the metal oxide modified clay mineral catalyst prepared above according to a ratio of 1: 3, mixing uniformly, mixing with 80 wt% of silicon carbide, and adding into a microwave reactor together.
(3) After nitrogen is introduced to remove air in the reaction system, microwave equipment is started, the power is set to be 1kW, and reactants are heated to 500 ℃.
(4) Collecting the condensable part of the pyrolysis steam generated in the step (3) by a condensing device to obtain high-quality naphtha, wherein the comprehensive yield of product oil is 71%, and the GC-MS detection result shows that C in the components5-C12Alkane content 65%, and C5-C12The aromatic hydrocarbon content is only 4 percent, and the aromatic hydrocarbon can replace naphtha in the petroleum industry to be used as a plastic production raw material; the non-condensable part may be used for electricity/heat generation.
The foregoing merely represents preferred embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010958283.6A CN112251253A (en) | 2020-09-11 | 2020-09-11 | Method for chemical recovery and circulation of waste plastics |
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| CN202010958283.6A CN112251253A (en) | 2020-09-11 | 2020-09-11 | Method for chemical recovery and circulation of waste plastics |
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| CN112251253A true CN112251253A (en) | 2021-01-22 |
Family
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| CN202010958283.6A Pending CN112251253A (en) | 2020-09-11 | 2020-09-11 | Method for chemical recovery and circulation of waste plastics |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951254A (en) * | 2022-05-11 | 2022-08-30 | 福建工程学院 | Method for preventing and controlling co-migration of micro-plastic-drug-resistant gene in soil |
| CN116328854A (en) * | 2023-02-21 | 2023-06-27 | 山东科技大学 | Preparation method and application of catalyst for preparing oil by pyrolysis of waste plastics |
| US12214341B1 (en) * | 2024-05-28 | 2025-02-04 | Shandong University Of Science And Technology | Method for preparing a catalyst for pyrolysis of waste plastics to produce oil and use thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985820A (en) * | 1973-05-14 | 1976-10-12 | Union Carbide Corporation | Cracking process |
| CN1462790A (en) * | 2003-05-26 | 2003-12-24 | 四川大学 | Catalyst for cracking waste plastics to generate fuel |
| US20070083068A1 (en) * | 2005-10-06 | 2007-04-12 | Swaminathan Ramesh | Method of Recycling A Recylable Plastic |
| CN101992113A (en) * | 2010-11-24 | 2011-03-30 | 同济大学 | Method for preparing fuel oil catalyst by lightening waste plastic pyrolysed oil and application of fuel oil catalyst |
| CN102039155A (en) * | 2010-11-25 | 2011-05-04 | 同济大学 | Catalyst for catalytic reforming of waste-plastic pyrolysis oil and preparation method thereof |
| WO2016175706A1 (en) * | 2015-04-30 | 2016-11-03 | Nanyang Technological University | A pillared clay catalyst |
| CN106520176A (en) * | 2016-11-21 | 2017-03-22 | 中国科学院过程工程研究所 | Method for using polyolefin plastic to prepare micromolecule alkene |
| CN107903932A (en) * | 2017-11-06 | 2018-04-13 | 南昌大学 | A kind of method using discarded LDPE: Low-density polyethylene plastics controlled syntheses aviation kerosine aromatic component |
| CN109158100A (en) * | 2018-09-28 | 2019-01-08 | 广东省环境科学研究院 | A kind of catalyst and preparation method thereof of catalytic cracking waste-plastic production fuel oil |
| CN111662739A (en) * | 2020-05-26 | 2020-09-15 | 汕头市谷源新能源有限公司 | Method for preparing high-quality tar by pyrolyzing plastic wastes |
-
2020
- 2020-09-11 CN CN202010958283.6A patent/CN112251253A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985820A (en) * | 1973-05-14 | 1976-10-12 | Union Carbide Corporation | Cracking process |
| CN1462790A (en) * | 2003-05-26 | 2003-12-24 | 四川大学 | Catalyst for cracking waste plastics to generate fuel |
| US20070083068A1 (en) * | 2005-10-06 | 2007-04-12 | Swaminathan Ramesh | Method of Recycling A Recylable Plastic |
| CN101992113A (en) * | 2010-11-24 | 2011-03-30 | 同济大学 | Method for preparing fuel oil catalyst by lightening waste plastic pyrolysed oil and application of fuel oil catalyst |
| CN102039155A (en) * | 2010-11-25 | 2011-05-04 | 同济大学 | Catalyst for catalytic reforming of waste-plastic pyrolysis oil and preparation method thereof |
| WO2016175706A1 (en) * | 2015-04-30 | 2016-11-03 | Nanyang Technological University | A pillared clay catalyst |
| CN106520176A (en) * | 2016-11-21 | 2017-03-22 | 中国科学院过程工程研究所 | Method for using polyolefin plastic to prepare micromolecule alkene |
| CN107903932A (en) * | 2017-11-06 | 2018-04-13 | 南昌大学 | A kind of method using discarded LDPE: Low-density polyethylene plastics controlled syntheses aviation kerosine aromatic component |
| CN109158100A (en) * | 2018-09-28 | 2019-01-08 | 广东省环境科学研究院 | A kind of catalyst and preparation method thereof of catalytic cracking waste-plastic production fuel oil |
| CN111662739A (en) * | 2020-05-26 | 2020-09-15 | 汕头市谷源新能源有限公司 | Method for preparing high-quality tar by pyrolyzing plastic wastes |
Non-Patent Citations (1)
| Title |
|---|
| 《自来水笔制造工艺》编写组: "《自来水笔制造工艺》", 30 July 1988 * |
Cited By (5)
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| CN114951254A (en) * | 2022-05-11 | 2022-08-30 | 福建工程学院 | Method for preventing and controlling co-migration of micro-plastic-drug-resistant gene in soil |
| CN114951254B (en) * | 2022-05-11 | 2023-11-14 | 福建工程学院 | A method for preventing and controlling the co-migration of microplastics and drug-resistant genes in soil |
| CN116328854A (en) * | 2023-02-21 | 2023-06-27 | 山东科技大学 | Preparation method and application of catalyst for preparing oil by pyrolysis of waste plastics |
| CN116328854B (en) * | 2023-02-21 | 2024-02-13 | 山东科技大学 | Preparation method and application of a catalyst for pyrolysis of waste plastics into oil |
| US12214341B1 (en) * | 2024-05-28 | 2025-02-04 | Shandong University Of Science And Technology | Method for preparing a catalyst for pyrolysis of waste plastics to produce oil and use thereof |
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