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Recycling, washing and purifying method of multi-drum film type waste plastic

A drum-type technology for waste plastics, applied in plastic recycling, recycling technology, chemical instruments and methods, etc., can solve problems such as crushing, washing and purification difficulties, poor equipment, and low plastic bulk density

Active Publication Date: 2016-07-06
JIANGSU JINWO MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low bulk density, large volume, and complex composition of film-based waste plastics, it is especially difficult to crush, wash and purify, and consume a lot of water resources. The current recycling and regeneration field is mainly produced by individual households and small workshops, with simple equipment and small scale. cause secondary environmental pollution

Method used

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  • Recycling, washing and purifying method of multi-drum film type waste plastic
  • Recycling, washing and purifying method of multi-drum film type waste plastic
  • Recycling, washing and purifying method of multi-drum film type waste plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: Recycling of agricultural mulch film waste plastics

[0057] The materials mainly composed of agricultural film waste plastics are conveyed by the first conveying equipment 1 to the shredder 2, and are crushed into pieces with a side length of 20-50 mm; The drum washing machine 4 washes and removes harmful impurities such as metal objects, stones and sand mixed in the tablet through the sediment pipe, and the sediment enters the solid waste treatment system with a washing concentration of 3%; after washing, the tablet and water flow into the multi-rotation Drum type washing and separating device 5, while injecting washing water from the upper water inlet of the multi-drum type washing and separating device, inject washing water with an upward flow rate of 0.3m / s from each lower water inlet, wash again and separate out the Light impurities, such as paper, etc. Then the plastic tablet and water are pumped together by the tablet pump 6 to the inclined screw deh...

Embodiment 2

[0059] Example 2: Recycling of woven bag waste plastics

[0060] The material mainly consisting of woven bag waste plastics is conveyed to the shredder 2 by the first conveying equipment 1, and is crushed into pieces with a side length of 20-50 mm; then the crushed pieces are conveyed to the Drum washing machine 4 washes and removes harmful impurities such as metal objects, stones and sand particles mixed in the tablet through the sediment pipe, and the sediment enters the solid waste treatment system with a washing concentration of 4%; after washing, the tablet and water flow into multiple Drum type washing and separating device 5, when washing water is injected from the upper water inlet of the multi-drum type washing and separating device, washing water with an upward flow rate of 0.2m / s is injected from each lower water inlet, and the material containing Light impurities, such as paper, etc. Then the plastic tablet and water are pumped together by the tablet pump 6 to the...

Embodiment 3

[0062] Example 3: Comprehensive utilization of paper mill solid waste regeneration

[0063] The paper mill solid waste materials mainly composed of waste paper, polypropylene, polyethylene and other film-type waste plastics are transported from the first conveying equipment 1 to the shredder 2, and are shredded into pieces with a side length of 20-50 mm; and then The second conveying equipment 3 transports the crushed material to the drum washing machine 4 for washing, and removes harmful impurities such as metal objects, stones and sand mixed in the material through the sediment pipe, and the sediment enters the solid waste treatment system for washing. The concentration is 5%; after washing, the tablet and water flow into the multi-drum washing and separating device 5 together, and the washing water is simultaneously injected from the upper water inlet and each lower water inlet of the multi-drum washing and separating device. In the horizontal conveying direction of the mix...

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Abstract

The invention discloses a recycling, washing and purifying method of multi-drum film type waste plastic. After a waste material is shorn by mechanical scissors through a shredding machine, sediments are primarily washed to remove heavy impurities; and then, the waste material is washed through a multi-stage drum in a multi-drum washing and separating device, and an upper flowing speed of washing water injected in each lower water inlet is controlled, so that light impurities mixed in the material are effectively removed, or different materials with a specific gravity difference are separated through washing, and a double-screw dipping machine is used for uniformly shearing and rolling obtained plastic pieces to small pieces and granular particles to dry and store for future use. The method and the system can realize comprehensive utilization of solid wastes of a paper mill, recycling of waste paper fibers and the waste plastic and automatic large-scale industrial production, can reach a comprehensive utilization rate of above 90%, can reduce the water consumption by 50-80% through recycling of the washing water, reduces the environmental pollution, guarantees the production continuity, saves the production space, and has prominent significance.

Description

technical field [0001] The invention relates to a recycling, washing and purifying system and a washing and purifying method for waste plastics, in particular to a washing and purifying system and a washing and purifying method for recycling and reusing thin-film waste plastics. Background technique [0002] The development of the plastics industry has brought great benefits to mankind, but it has left endless troubles, namely "white pollution". Since there are plastic products, old plastics are inevitably produced, and as time goes by, more new raw materials are put into use, which makes waste plastics rise sharply. Because waste plastics are not easy to age and degrade at room temperature, white pollution is increasing day by day, causing serious damage to the ecological environment. [0003] The output and consumption of plastic products in my country rank first in the world. The per capita annual consumption of plastics is about 3 kg (8 kg per capita in developed countr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B5/42B29B17/02
CPCB03B5/42B29B17/02B29B2017/0244Y02W30/62
Inventor 曹堪洲范刚华徐涛
Owner JIANGSU JINWO MACHINERY
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