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Comprehensive utilization method for waste aluminum-plastic paper composite packing material

A composite packaging material, aluminum-plastic paper technology, applied in the removal of solid waste, hydrogen production, centrifuge, etc., can solve the problems of polluting the environment, wasting resources, and the difficulty of comprehensive utilization

Inactive Publication Date: 2012-09-19
张文知
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Waste aluminum-plastic-paper composite packaging materials also pollute the environment and waste resources. Traditional mechanical separation methods are difficult to deal with these increasing "garbage"; more difficult to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] 1. Classification: Classify according to different plastic components, such as PE, PP, PET, PVC, etc.;

[0012] 2. Crushing: Use a plastic film crusher to crush large pieces of waste aluminum-plastic-paper composite packaging materials to

[0013] 10mm-20mm;

[0014] 3. Cleaning: Rinse with clean water or detergent plus clean water depending on the pollution;

[0015] 4. Pyrolysis and gasification: Put the above materials in a vacuum high-pressure high-temperature kettle, and heat them to 400°C-550°C under vacuum conditions to make their plastic components pyrolyze and gasify, and the pyrolyzed and gasified plastic components are cooled and become into plastic powder for recycling;

[0016] 5. Alkali dissolution: After the above materials are cooled, transfer them to a reaction kettle with recyclable gas, add caustic potash solution at a ratio of 50 L of 5% caustic potash solution for every 1 kg of aluminum content, and slowly depyrate under constant stirring until C...

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PUM

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Abstract

The invention discloses a comprehensive utilization method for a waste aluminum-plastic paper composite packing material. The method comprises the following steps: crushing, cleaning and drying the waste aluminum-plastic paper composite packing material; heating, pyrolyzing and gasifying the dried material in a vacuum high-pressure high-temperature kettle, and performing low temperature curing recovery; putting the pyrolyzed and gasified aluminum-plastic paper mixed material into a reaction kettle, adding a caustic potash solution for reaction, and recovering the generated hydrogen serving as a special fuel; neutralizing the rest material by using dilute sulfuric acid, and performing filter pressing and washing to obtain a filter cake, namely the available water pulp; and filtering off the water pulp, evaporating and crystallizing the obtained filtrate, and centrifuging to remove residue so as to recover potassium alum with wide application.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of three wastes, in particular to a method for comprehensive utilization of waste aluminum, plastic and paper composite packaging materials. Background technique [0002] Aluminum-plastic-paper composite packaging materials, excellent high barrier properties, light protection, and stability have developed rapidly, especially in the packaging fields of beverages, food, and medicines. [0003] Waste aluminum-plastic-paper composite packaging materials also pollute the environment and waste resources. Traditional mechanical separation methods are difficult to deal with these increasing "garbage"; It is more difficult to use. Contents of the invention [0004] In order to solve the deficiencies of the prior art, the present invention is realized in the following way: the comprehensive utilization method of waste aluminum-plastic-paper composite packaging materials, the method is t...

Claims

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Application Information

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IPC IPC(8): B09B3/00C01B3/08D21H11/14B04B5/10
CPCY02E60/36
Inventor 张文知
Owner 张文知
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