Degradation method for polyethylene plastics

A polyethylene plastic and raw material technology, applied in the field of environmental protection, can solve pollution and other problems, and achieve the effect of easy contact degradation and secondary reuse

Inactive Publication Date: 2018-08-17
FOSHAN JINTONG ENTERPRISE MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a method for degrading polyethylene plastics, so that the plastics can be recycled and used repeatedly, and the waste plastics can be processed

Method used

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  • Degradation method for polyethylene plastics

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Experimental program
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Effect test

Embodiment 1

[0026] A method for degrading polyethylene plastics is characterized in that it comprises the following specific steps:

[0027] S1. Sieve the collected plastic raw materials, clean them, and perform mechanical destruction to reduce their volume;

[0028] S2. Put the pretreated raw materials into the soaking solution for soaking for 24 hours, and keep the soaking temperature at 37°C;

[0029] S3. Cleaning the soaked raw materials, adding them to the fermenter for fermentation and degradation;

[0030] S4. Collect the degraded mixed solution, waiting for secondary extraction and recycling.

[0031] The soaking solution in the step S2 includes the following components in parts by weight: calcium hydroxide 6, sodium hydroxide 9, ammonium chloride 6, ammonium bicarbonate 11, triethanolamine 5, and isopropanol 4.

[0032] Further, the concentration of the soaking solution is 0.12moL / L-0.46moL / L.

[0033] The soaking liquid in the present invention can be combined with the functi...

Embodiment 2

[0038] A method for degrading polyethylene plastics is characterized in that it comprises the following specific steps:

[0039] S1. Sieve the collected plastic raw materials, clean them, and perform mechanical destruction to reduce their volume;

[0040] S2. Put the pretreated raw materials into the soaking solution for soaking for 72 hours, and keep the soaking temperature at 60°C;

[0041] S3. Cleaning the soaked raw materials, adding them to the fermenter for fermentation and degradation;

[0042] S4. Collect the degraded mixed solution, waiting for secondary extraction and recycling.

[0043] The soaking solution in the step S2 includes the following components in parts by weight: calcium hydroxide 13, sodium hydroxide 15, ammonium chloride 18, ammonium bicarbonate 26, triethanolamine 19, and isopropanol 9.

[0044] Further, the concentration of the soaking solution is 0.46moL / L.

[0045] Further, the process of fermentation and degradation in the step S3 is: the total n...

Embodiment 3

[0049] A method for degrading polyethylene plastics is characterized in that it comprises the following specific steps:

[0050] S1. Sieve the collected plastic raw materials, clean them, and perform mechanical destruction to reduce their volume;

[0051] S2. Put the pretreated raw materials into the soaking solution for soaking for 48 hours, and keep the soaking temperature at 49°C;

[0052] S3. Cleaning the soaked raw materials, adding them to the fermenter for fermentation and degradation;

[0053] S4. Collect the degraded mixed solution, waiting for secondary extraction and recycling.

[0054] The soaking solution in the step S2 includes the following components in parts by weight: 10 calcium hydroxide, 12 sodium hydroxide, 12 ammonium chloride, 19 ammonium bicarbonate, 12 triethanolamine, and 7 isopropanol.

[0055] Further, the concentration of the soaking solution is 0.29moL / L.

[0056] Further, the fermentation degradation process in the step S3 is: the total number...

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PUM

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Abstract

The invention provides a degradation method for polyethylene plastics. The degradation method comprises the following concrete steps: S1, screening and cleaning collected plastic raw materials, and carrying out mechanical damage to reduce the volume of the raw materials; S2, soaking the pretreated raw materials in a soaking solution for 24-72 hours and maintaining a soaking temperature to be 37-60DEG C; S3, washing the soaked raw materials and adding the soaked raw materials into a fermentation tank for fermentation and degradation; and S4, collecting degraded mixed liquid for secondary extraction and recycling. The method of the invention allows the plastics to be conveniently and repeatedly recycled; after the waste plastics are recycled, the recycled plastics can be made into productsagain and can also be used for preparing gasoline and diesel oil; so environmental and social problems brought by plastic pollution can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for degrading polyethylene plastic. Background technique [0002] Ordering takeaway during busy work and bad weather has become the norm for many people. However, with the surge in takeout volume, the packaging boxes and bags consumed by takeout are also getting bigger and bigger. The ensuing white pollution has also attracted everyone's attention. [0003] The report on the development of China's food delivery O2O industry shows that in 2016, the proportion of online food delivery users who consumed more than 3 times a week reached 63.3%. According to this consumption pattern, at least 400 million takeaways are delivered every week, resulting in the waste of 400 million disposable packing boxes and disposable tableware. Takeaway disposable tableware has become a new "white pollution". In this regard, Xie Yufeng, a researcher at the Sha...

Claims

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Application Information

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IPC IPC(8): C08J11/16C08J11/28C08J11/24C08J11/10C08L23/06
CPCC08J11/10C08J11/16C08J11/24C08J11/28C08J2323/06Y02W30/62
Inventor 何焕平黄建辉余金铭
Owner FOSHAN JINTONG ENTERPRISE MANAGEMENT CO LTD
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