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Multi-drum type recycling and reusing washing and purifying system for film type waste plastics

A technology of waste plastics and purification system, which is applied in the direction of plastic recycling, recycling technology, chemical instruments and methods, etc., and can solve problems such as complex components, large volume, difficulty in crushing and washing and purification

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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  • Multi-drum type recycling and reusing washing and purifying system for film type waste plastics
  • Multi-drum type recycling and reusing washing and purifying system for film type waste plastics
  • Multi-drum type recycling and reusing washing and purifying system for film type waste plastics

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: Recycling and comprehensive utilization of solid waste in paper mills

[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 th...

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Abstract

The invention discloses a recycling and reusing washing and purifying system and a washing and purifying method for film type waste plastics. A shredding machine is adopted; after waste materials are cut by using a mechanical shear, dregs are washed preliminarily and heavy impurities are removed; then in a multi-drum type washing separation device, washing is carried out through multiple stages of drums; besides, the ascending flow velocity of washing water injected from all lower water inlets is controlled; light impurities mixed in the materials are removed effectively or different materials with proportion differences are washed and separated; furthermore, a twin-screw impregnator is used for cutting and rubbing obtained plastic sheets uniformly into small pieces and granular particles; and the pieces and the particles are dried and stored for use. The method and the system can achieve comprehensive utilization of solid wastes of a paper mill, recycling and reusing of waste paper fiber and waste plastics and automatic and large-scale industrial production; the comprehensive utilization rate can reach more than 90%; the water consumption can be reduced by 50-80% through recycling of the washing water; the environmental pollution is reduced; the continuity in production is guaranteed; the production space is saved; and remarkable significance is achieved.

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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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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