Method for pyrolyzing, recycling and granulating waste refrigerator plastic

A technology for plastics and refrigerators, which is applied in the field of pyrolysis recycling of waste refrigerator plastics to make granules. It can solve the problems that are not easy to separate, the formed granules stick together, affect the integrity and aesthetics of the final molded parts, and achieve the overall characteristics. Complete, fully responsive effect

Pending Publication Date: 2021-11-05
清远市东江环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing granulation methods tend to cause the formed granules to stick together when used, and are not easy to separate, which affects the integrity and aesthetics of the final molded parts

Method used

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  • Method for pyrolyzing, recycling and granulating waste refrigerator plastic

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0037] I: First, decompose the plastic of the waste refrigerator, crush it first, and separate the high-density impurities in it from the plastic block through cleaning, and complete the first step of decomposition;

[0038] II: Pyrolysis the processed plastic block, then put the plastic block into the melting furnace for high temperature treatment, melt the plastic block, add stabilizer barium isozincate, Plasticizer chlorinated paraffin and lubricant barium stearate, and the mixture produced by them is stirred and mixed through the stirring rod in the dissolving furnace, so that the substances in the dissolving furnace can react more completely;

[0039] III: Cool the mixture after mixing, and cool the mixture to a certain extent by air-cooling to ensure that it will not be too diluted or too hard, which is convenient for subsequent granulation;

[0040] IV: The mixture falls into the interior of the granulator, and the mixture is dry-pressed through the mold, and then the e...

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Abstract

The invention relates to the technical field of plastic recycling, and discloses a method for pyrolyzing, recycling and granulating waste refrigerator plastic, which comprises the following steps of: A, decomposing the waste refrigerator plastic, and decomposing the plastic into a plurality of plastic blocks by methods of crushing, cleaning, separating and the like; B, putting the plastic blocks into a dissolving furnace in a pyrolysis manner, heating to 100-250 DEG C, keeping on heating until the external temperature can reach more than 500 DEG C and carbonization is generated when the central temperature is very low, and adding a stabilizer, a plasticizer and a lubricant while performing high-temperature treatment on the plastic blocks. According to the method for pyrolyzing, recycling and granulating the waste refrigerator plastic, the plastic solution pyrolyzed in the dissolving furnace is subjected to certain air cooling treatment, so that the solution is not excessively diluted or too hard, and molded parts can be ensured not to be adhered together during cutting.

Description

technical field [0001] The invention relates to the technical field of plastic recycling, in particular to a method for producing granules through pyrolysis recycling of waste refrigerator plastics. Background technique [0002] Plastic refers to a high-molecular-weight synthetic resin as the main component, which is processed into a plastic (flexible) material by adding appropriate additives, or a rigid material formed by curing and cross-linking. As a measure to save energy and protect the environment, the recycling of waste plastics is getting more and more attention, especially in developed countries, which started early and have already received obvious benefits. Since the vast majority of plastics are non-degradable, they will cause serious white pollution and destroy the ecological environment of the earth if they accumulate over time. Reuse of molded materials can alleviate the problem of pollution. After the waste plastics are processed into granules, they still ha...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29B17/00B29B17/04C08J11/12C08L19/00
CPCB29B9/06B29B17/00B29B17/04C08J11/12C08J2319/00Y02W30/62Y02W30/52
Inventor 方海宝
Owner 清远市东江环保技术有限公司
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