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Leacher and application thereof as well as device and method for recycling PVC (polyvinyl chloride)-containing waste plastics

A technology of extractor and waste plastics, which is applied in the field of waste plastics recycling, can solve the problems of complex process flow of waste plastics, complex components that cannot be processed, and large amount of PVC solvent, so as to facilitate industrial production design, improve PVC dissolution efficiency, and improve The effect of reuse

Active Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing problems in the recycling of PVC-containing waste plastics in the prior art, such as the need to pick out PVC products first, low PVC dissolution efficiency, large amount of PVC solvent, inability to process waste plastics with complex components, and complicated process flow, etc., to provide a Extractor and its application, a device and method for recycling waste plastics containing PVC, the extractor can realize continuous production, and has strong adaptability to raw materials; at the same time, the method for recycling waste plastics containing PVC effectively improves the resources of waste plastics Recycling, improving the yield of PVC particles, oil products and / or chemicals; especially, recycling waste plastics containing PVC in the extractor provided by the invention, realizing continuous recycling of waste plastics containing PVC, and Improve PVC dissolution efficiency

Method used

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  • Leacher and application thereof as well as device and method for recycling PVC (polyvinyl chloride)-containing waste plastics
  • Leacher and application thereof as well as device and method for recycling PVC (polyvinyl chloride)-containing waste plastics
  • Leacher and application thereof as well as device and method for recycling PVC (polyvinyl chloride)-containing waste plastics

Examples

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Embodiment approach

[0055] In another embodiment of the present invention, the branch pipe assembly includes a first branch pipe, a connecting pipe and at least one second branch pipe, and the connecting pipe communicates with the first branch pipe and multiple second branch pipes.

[0056] Preferably, in each set of branch pipe assemblies, the first branch pipe communicates with the leaching liquid pipe, and the second branch pipe communicates with the dissolution pipe.

[0057] According to the present invention, preferably, along the flow direction of the material, the inner diameters of the plurality of first branch pipes decrease sequentially, and / or the inner diameters of the plurality of second branch pipes decrease sequentially. That is, according to the flow direction of the material, the total flux of the leachate in each group of branch pipe assemblies decreases sequentially. Wherein, the inner diameters of the plurality of first branch pipes are successively reduced, which means that ...

Embodiment 1

[0123] (1) Extractor such as figure 1 As shown, the extractor includes: leach solution inlet 01, leach solution pipe 02, three sets of branch pipe assemblies, dissolving pipe 03, material inlet 04 and mixture outlet 05, and each set of branch pipe assemblies includes: first branch pipe 06, A connecting pipe 07 and six second branch pipes 08, the connecting pipe 07 communicates with the first branch pipe 06 and the six second branch pipes 08, and the branch pipe assembly is used to distribute the leachate in the leachate pipe 02 to In the dissolving pipe 03, the dissolving pipe 03 is used to mix and dissolve the leaching solution and the materials in the dissolving pipe 03 to obtain a mixture; the leaching solution inlet 01 is set at the leaching solution On the pipe 02, and perpendicular to the center of the end face of the leach liquid pipe 02; according to the flow direction of the flow, one end of the dissolving pipe 03 is the material inlet 04, and the other end is the mix...

Embodiment 2

[0134] (1) Extractor such as figure 1 As shown, the extractor includes: leach solution inlet 01, leach solution pipe 02, five sets of branch pipe assemblies, dissolving pipe 03, material inlet 04 and mixture outlet 05, and each set of branch pipe assemblies includes: first branch pipe 06, A connecting pipe 07 and six second branch pipes 08, the connecting pipe 07 communicates with the first branch pipe 06 and the six second branch pipes 08, and the branch pipe assembly is used to distribute the leachate in the leachate pipe 02 to In the dissolving pipe 03, the dissolving pipe 03 is used to mix and dissolve the leaching solution and the materials in the dissolving pipe 03 to obtain a mixture; the leaching solution inlet 01 is set at the leaching solution On the pipe 02, and perpendicular to the center of the end face of the leaching liquid pipe 02; according to the flow direction of the stream, one end of the dissolving pipe 03 is the material inlet 04, and the other end is the...

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Abstract

The invention relates to the technical field of waste plastic recovery, in particular to an extractor and application thereof, and a device and a method for recycling PVC (polyvinyl chloride)-containing waste plastic. The leaching device comprises a leaching liquid pipe, at least one group of branch pipe components and a dissolving pipe, the branch pipe assembly is communicated with the leaching liquid pipe and the dissolving pipe and is used for distributing the leaching liquid in the leaching liquid pipe into the dissolving pipe; the dissolving pipe is used for mixing and dissolving the leaching solution and the materials in the dissolving pipe to obtain a mixture. The PVC-containing waste plastic is recycled in the extractor provided by the invention, PVC in the waste plastic is fully removed, the PVC dissolving efficiency of the waste plastic is effectively improved, and the corrosion degree of the residual waste plastic to downstream equipment is remarkably reduced; according to the method for recycling the PVC-containing waste plastics provided by the invention, the yield of PVC particles and the yield of oil products and / or chemicals are effectively improved, and the reutilization of the waste plastics is improved.

Description

technical field [0001] The invention relates to the technical field of recycling waste plastics, in particular to an extractor and its application, a device and method for recycling waste plastics containing PVC. Background technique [0002] my country is a major producer of plastic products. Of the nearly 300 million tons of plastic produced each year, about one-third will become garbage after use. With the implementation of the plastic restriction order, the disposal of plastic waste has become a difficult problem. Recycling waste plastics as raw materials for the production of oil and chemicals not only solves the problem that a large amount of garbage cannot be disposed of, but also alleviates the country's energy crisis to a certain extent and ensures the country's energy security. [0003] Waste plastics contain a large amount of PVC products, and the chlorine element in them will corrode the processing equipment in the subsequent waste plastic reprocessing process, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/02C08J11/08C08L27/06
CPCB29B17/02C08J11/08C08J2327/06B29B2017/0203B29B2017/0293Y02W30/62
Inventor 韩颖田志鸿甄栋兴胡立峰张同旺朱丙田
Owner CHINA PETROLEUM & CHEM CORP
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