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Water-free cleaning method and device for waste plastics

A technology for waterless cleaning and waste plastics, applied in the direction of plastic recycling, recycling technology, etc., can solve the problem of difficult cleaning of waste plastics such as bottles, achieve high added value of products, improve process yield and treatment effect Good results

Pending Publication Date: 2022-08-02
江苏斯瑞资源循环利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing technical problem is that most of the existing patents are film or powder waste plastics, and it is difficult to clean the waste plastics of bottle flakes, so there is no relevant technology

Method used

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  • Water-free cleaning method and device for waste plastics
  • Water-free cleaning method and device for waste plastics
  • Water-free cleaning method and device for waste plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: HDPE crushed material for cleaning and crushing

[0046] (1) Setting of vibrating feeder 1

[0047] (2) The wind flux of the primary air separator is 12000m 3 / h

[0048] (3) The wind flux of the secondary air separator is 8000m 3 / h

[0049] (4) Cyclone separator 4

[0050] (5) The soaking time of caustic soda solution pool 5 is 30min

[0051] (6) Friction cleaner 6 size (L*B*H) set 30*10*5m3

Embodiment 2

[0052] Embodiment 2: for cleaning the PET bottle flakes after de-standard and crushing treatment

[0053] Features: Material pollutants are mainly high-adhesion impurities

[0054] (1) Setting of vibrating feeder 1

[0055] (2) The wind flux of the primary air separator is 11000m 3 / h, can not be set

[0056] (3) The wind flux of the secondary air separator is 7000m 3 / h

[0057] (4) Cyclone separator 4

[0058] (5) The soaking time of caustic soda solution pool 5 is 30min

[0059] (6) Friction cleaner 6 size (L*B*H) set 20*10*5m3

Embodiment 3

[0060] Embodiment 3: for the PET bottle flakes after uncleaned de-labeling and crushing treatment

[0061] Features: There are many impurities in the label paper

[0062] (1) Setting of vibrating feeder 1

[0063] (2) The wind flux of the primary air separator is 12500m 3 / h

[0064] (3) The wind flux of the secondary air separator is 11000m 3 / h

[0065] (4) Cyclone separator 4

[0066] (5) The soaking time of caustic soda solution pool 5 is 30min

[0067] (6) Friction cleaner 6 size (L*B*H) set 20*10*5m3

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Abstract

The invention discloses a method and a device for water-free cleaning of waste plastics, and the method and the device have the beneficial effects of simple process, low equipment requirement, good treatment effect and high added value of products. And the defects of high energy consumption and high pollution of traditional wet cleaning are effectively overcome. And through the combination of different types of equipment, the effect of stage treatment is achieved, and the process yield is improved. The overall design parameters are easy to adjust, and the operation difficulty is low.

Description

technical field [0001] The invention relates to the technical field of waste plastic recycling, in particular to a method and device for waterless cleaning of waste plastics. Background technique [0002] In recent years, the renewable resources industry has developed vigorously. As an important renewable resource, waste plastics have always been a key issue in the field of recycling and reuse. The significance of recycling waste plastics is to reduce the use of raw materials, reduce carbon emissions, and promote a circular economy. Among them, the crushing and cleaning of waste plastics are important links. However, the purity of plastic bottle flakes or plastic films after cleaning is the core criterion for judging whether high-quality reuse is possible. [0003] At present, in the field of waste plastic cleaning in China, the most commonly used method is water cleaning, that is, wet cleaning, to remove pollutants on the surface of waste plastics. However, in the cleanin...

Claims

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Application Information

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IPC IPC(8): B29B17/00B29B17/02
CPCB29B17/00B29B17/02B29B2017/0015B29B2017/0234B29B2017/0231B29B2017/0289Y02W30/62
Inventor 严圣军李乃丹王蒙袁浩轩丁海群李艳艳翁思维陈凯
Owner 江苏斯瑞资源循环利用有限公司
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