CN113601751A - Method for preparing granules by pyrolyzing and recycling waste refrigerator plastics - Google Patents
Method for preparing granules by pyrolyzing and recycling waste refrigerator plastics Download PDFInfo
- Publication number
- CN113601751A CN113601751A CN202110884731.7A CN202110884731A CN113601751A CN 113601751 A CN113601751 A CN 113601751A CN 202110884731 A CN202110884731 A CN 202110884731A CN 113601751 A CN113601751 A CN 113601751A
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- Prior art keywords
- plastic
- recycling
- pyrolyzing
- plastics
- waste refrigerator
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- 239000004033 plastic Substances 0.000 title claims abstract description 84
- 229920003023 plastic Polymers 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002699 waste material Substances 0.000 title claims abstract description 28
- 238000004064 recycling Methods 0.000 title claims abstract description 22
- 239000008187 granular material Substances 0.000 title claims abstract description 19
- 239000000314 lubricant Substances 0.000 claims abstract description 14
- 239000003381 stabilizer Substances 0.000 claims abstract description 14
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 238000003763 carbonization Methods 0.000 claims abstract description 7
- 238000000197 pyrolysis Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 9
- 229910052788 barium Inorganic materials 0.000 claims description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 5
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical group [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 2
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical class CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 125000005608 naphthenic acid group Chemical class 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/12—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to the technical field of plastic recycling, and discloses a method for preparing granules by pyrolyzing, recycling and granulating waste refrigerator plastics, which comprises the following steps: step A: decomposing waste refrigerator plastics, and decomposing the plastics into a plurality of plastic blocks by crushing, cleaning, separating and other methods; and B: the plastic block is put into a dissolving furnace in a pyrolysis mode, when the plastic block is heated to the temperature of 100-250 ℃, the central temperature is very low, the plastic block is continuously heated until the external temperature can reach more than 500 ℃ and generates carbonization, and a stabilizer, a plasticizer and a lubricant are added while the plastic block is subjected to high-temperature treatment. According to the method for preparing the granules by pyrolyzing and recycling the waste refrigerator plastics, certain air cooling treatment is carried out on the plastic solution after pyrolysis of the dissolving furnace, so that the solution is not excessively diluted or excessively hard, and formed parts can be prevented from being adhered together when cutting is carried out.
Description
Technical Field
The invention relates to the technical field of plastic recycling, in particular to a method for preparing granules by pyrolyzing and recycling waste refrigerator plastics.
Background
The plastic is a plastic (flexible) material which is formed by processing a synthetic resin with high molecular weight as a main component and adding a proper additive, or a rigid material formed by curing and crosslinking. The recycling of waste plastics is increasingly gaining attention as a measure for saving energy and protecting the environment, and especially, the recycling of waste plastics in developed countries has already received obvious benefits when working early. As most of plastics are not degradable and accumulate day by day, serious white pollution can be caused, and the ecological environment of the earth is damaged. The recycling of the molding material can relieve the pollution problem, and the waste plastic still has good comprehensive material performance after being processed into granules. Can be used for producing plastic products, and the regenerated plastic is more economical and has obvious effect.
The waste refrigerator is a common rejected product in life, but the waste refrigerator is provided with a plurality of substances capable of being recycled, wherein the substances comprise plastic materials of the waste refrigerator, and the plastic materials can be recycled and granulated. The existing granulation method is easy to cause that the formed granules are mutually adhered together and are not easy to separate when in use, thereby influencing the integrity and the aesthetic property of a final formed part.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for preparing granules by pyrolyzing, recycling and granulating waste refrigerator plastics, which has the advantages of avoiding formed parts from being adhered together and the like, and solves the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a method for preparing granules by pyrolyzing, recycling and granulating waste refrigerator plastics comprises the following steps:
step A: decomposing waste refrigerator plastics, and decomposing the plastics into a plurality of plastic blocks by crushing, cleaning, separating and other methods;
and B: the plastic block is placed in a dissolving furnace in a pyrolysis mode, when the plastic block is heated to the temperature of 100-250 ℃, the central temperature is very low, the plastic block is continuously heated until the external temperature can reach more than 500 ℃ and generates carbonization, and a stabilizer, a plasticizer and a lubricant are added while the plastic block is subjected to high-temperature treatment;
and C: cooling the high-temperature plastic solution after the dissolution and carbonization, and rapidly cooling the plastic solution to a certain extent in an air cooling mode;
step D: and (3) extruding and cutting the cooled solid plastic by a granulator, and cutting and molding the plastic.
Preferably, the interior of the dissolution furnace is a sealed environment.
Preferably, the stabilizer is 20% barium iso-zincate.
Preferably, the plasticizer is chlorinated paraffin.
Preferably, the lubricant is barium stearate.
Preferably, a stirring rod is arranged inside the dissolving furnace.
Compared with the prior art, the invention provides a method for preparing granules by pyrolyzing, recycling and granulating waste refrigerator plastics, which has the following beneficial effects:
1. according to the method for preparing the granules by pyrolyzing and recycling the waste refrigerator plastics, certain air cooling treatment is carried out on the plastic solution after pyrolysis of the dissolving furnace, so that the solution is not excessively diluted or excessively hard, and formed parts can be prevented from being adhered together when cutting is carried out.
2. According to the method for preparing the granules by pyrolyzing and recycling the waste refrigerator plastics, the stirring rod arranged in the dissolving furnace can react with the plastics after a stabilizer, a plasticizer and a lubricant are added into the dissolving furnace, the stirring rod mixes the stabilizer, the plasticizer and the lubricant together for stirring treatment, so that the reaction is more complete, and the overall characteristic of a finally obtained formed part is more complete.
Drawings
FIG. 1 is a schematic view of the overall granulation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for preparing granules by pyrolyzing and recycling waste refrigerator plastics includes the following steps:
step A: decomposing waste refrigerator plastics, and decomposing the plastics into a plurality of plastic blocks by crushing, cleaning, separating and other methods;
and B: the plastic block is placed in a dissolving furnace in a pyrolysis mode, when the plastic block is heated to the temperature of 100-250 ℃, the central temperature is very low, the plastic block is continuously heated until the external temperature can reach more than 500 ℃ and generates carbonization, and a stabilizer, a plasticizer and a lubricant are added while the plastic block is subjected to high-temperature treatment;
and C: cooling the high-temperature plastic solution after the dissolution and carbonization, and rapidly cooling the plastic solution to a certain extent in an air cooling mode;
step D: and (3) extruding and cutting the cooled solid plastic by a granulator, and cutting and molding the plastic.
The inside of the dissolving furnace is a sealed environment.
The stabilizer is 20% of barium iso-zincate.
Furthermore, the plastic is a plastic polymer, is a high molecular material obtained by vinyl chloride through addition polymerization reaction, is prepared by polyethylene and polypropylene, and is a product of updating naphthenic acid series, namely PVC plastic stabilizer of isooctanoic acid series, and has the advantages of light color, small peculiar smell and better thermal stability effect on PVC plastic.
The plasticizer is chlorinated paraffin.
Furthermore, the common chlorine content is 42 percent and 52 percent, and the advantages of low volatility, no combustion, low price and plasticizing effect are realized, namely the technical index of the plastic is improved.
The lubricant is barium stearate.
Furthermore, as a lubricant for polyvinyl chloride, it has hygroscopicity, and among all alkaline earth metal hard acid salts, it is the most excellent in long-term heat resistance.
And a stirring rod is arranged in the dissolving furnace.
Furthermore, when the stabilizer, the plasticizer and the lubricant are added into the interior of the dissolving furnace to react with the plastic, the stirring rod can accelerate the mixing of the stabilizer, the plasticizer and the lubricant, so that the reaction is more complete, and the performance of the formed part is better.
Experimental example 1
I: firstly, decomposing the plastic of the waste refrigerator, crushing the plastic, and cleaning to separate high-density impurities from the plastic blocks to finish the first step of decomposition;
II: performing pyrolysis treatment on the treated plastic block, then placing the plastic block into a dissolving furnace for high-temperature treatment, melting the plastic block, adding stabilizer barium iso-zincate, plasticizer chlorinated paraffin and lubricant barium stearate into the dissolving furnace in the melting process, and stirring and mixing the mixture generated by the stabilizer barium iso-zincate, the plasticizer chlorinated paraffin and the lubricant barium stearate by a stirring rod in the dissolving furnace to ensure that the substances in the dissolving furnace react more completely;
III: the mixture after the mixing is cooled, and the mixture is cooled to a certain degree through air cooling placement, so that the mixture is not excessively diluted or excessively hard, and subsequent granulation is facilitated;
IV: the mixture falls into the granulator, is subjected to dry pressing forming through a die, and is subjected to cutting treatment on extruded plastic through a special blade head to finally form a formed part.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method for preparing granules by pyrolyzing, recycling and granulating waste refrigerator plastics comprises the following steps:
step A: decomposing waste refrigerator plastics, and decomposing the plastics into a plurality of plastic blocks by crushing, cleaning, separating and other methods;
and B: the plastic block is placed in a dissolving furnace in a pyrolysis mode, when the plastic block is heated to the temperature of 100-250 ℃, the central temperature is very low, the plastic block is continuously heated until the external temperature can reach more than 500 ℃ and generates carbonization, and a stabilizer, a plasticizer and a lubricant are added while the plastic block is subjected to high-temperature treatment;
and C: cooling the high-temperature plastic solution after the dissolution and carbonization, and rapidly cooling the plastic solution to a certain extent in an air cooling mode;
step D: and (3) extruding and cutting the cooled solid plastic by a granulator, and cutting and molding the plastic.
2. The method for preparing the granules by pyrolyzing, recycling and granulating the waste refrigerator plastics as claimed in claim 1, wherein the method comprises the following steps: the inside of the dissolving furnace is a sealed environment.
3. The method for preparing the granules by pyrolyzing, recycling and granulating the waste refrigerator plastics as claimed in claim 1, wherein the method comprises the following steps: the stabilizer is 20% of barium iso-zincate.
4. The method for preparing the granules by pyrolyzing, recycling and granulating the waste refrigerator plastics as claimed in claim 1, wherein the method comprises the following steps: the plasticizer is chlorinated paraffin.
5. The method for preparing the granules by pyrolyzing, recycling and granulating the waste refrigerator plastics as claimed in claim 1, wherein the method comprises the following steps: the lubricant is barium stearate.
6. The method for preparing the granules by pyrolyzing, recycling and granulating the waste refrigerator plastics as claimed in claim 1, wherein the method comprises the following steps: and a stirring rod is arranged in the dissolving furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884731.7A CN113601751A (en) | 2021-08-02 | 2021-08-02 | Method for preparing granules by pyrolyzing and recycling waste refrigerator plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884731.7A CN113601751A (en) | 2021-08-02 | 2021-08-02 | Method for preparing granules by pyrolyzing and recycling waste refrigerator plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113601751A true CN113601751A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110884731.7A Pending CN113601751A (en) | 2021-08-02 | 2021-08-02 | Method for preparing granules by pyrolyzing and recycling waste refrigerator plastics |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259755A (en) * | 2008-04-09 | 2008-09-10 | 宁波朗格世明汽车部件有限公司 | Method for manufacturing automobile treadle pad by using waste and old PVC material |
| CN104592691A (en) * | 2015-02-28 | 2015-05-06 | 广东源盛生态环保科技有限公司 | Plastic geotechnical cloth and preparation method thereof |
| CN105984044A (en) * | 2015-01-30 | 2016-10-05 | 重庆文力机械有限公司 | Plastic recovery method |
| CN108059782A (en) * | 2018-02-08 | 2018-05-22 | 上海亚特塑料制品有限公司 | A kind of igelite particle and preparation method thereof |
| CN110421742A (en) * | 2019-08-12 | 2019-11-08 | 陈胜高 | A kind of recycling of waste plastics system |
-
2021
- 2021-08-02 CN CN202110884731.7A patent/CN113601751A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259755A (en) * | 2008-04-09 | 2008-09-10 | 宁波朗格世明汽车部件有限公司 | Method for manufacturing automobile treadle pad by using waste and old PVC material |
| CN105984044A (en) * | 2015-01-30 | 2016-10-05 | 重庆文力机械有限公司 | Plastic recovery method |
| CN104592691A (en) * | 2015-02-28 | 2015-05-06 | 广东源盛生态环保科技有限公司 | Plastic geotechnical cloth and preparation method thereof |
| CN108059782A (en) * | 2018-02-08 | 2018-05-22 | 上海亚特塑料制品有限公司 | A kind of igelite particle and preparation method thereof |
| CN110421742A (en) * | 2019-08-12 | 2019-11-08 | 陈胜高 | A kind of recycling of waste plastics system |
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Application publication date: 20211105 |