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Density separation method for lightweight plastics commonly used in automobiles

A technology of density separation and lightweight plastics, which is applied in the direction of plastic recycling and recycling technology, can solve the problems of difficult recycling, poor performance of recycled products, and failure to maximize the value of waste plastic recycling, and achieve easy implementation, Low cost, effective in solving separation problems

Inactive Publication Date: 2018-09-18
CHANGCHUN UNIV OF TECH
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Problems solved by technology

The amount of plastic used in the automobile industry is very large, and there are many kinds of plastics used in waste automobiles, which are difficult to recycle directly. Moreover, the performance of recycled products after mixing different plastics is very poor, and the recycling value of waste plastics cannot be maximized.

Method used

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  • Density separation method for lightweight plastics commonly used in automobiles
  • Density separation method for lightweight plastics commonly used in automobiles
  • Density separation method for lightweight plastics commonly used in automobiles

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing and embodiment, carry out technical scheme in the embodiment of the present invention

[0027]Describe clearly and completely.

[0028] Block diagram of a density separation method for lightweight plastics commonly used in automobiles, such as figure 1 , a structural schematic diagram of a density separation method for lightweight plastics commonly used in automobiles, as figure 2 Firstly, the pretreated lightweight plastics commonly used in waste cars are sent from the storage and feeding device (1) to the No. 1 density separation device (2) at regular intervals and quantitatively through the control of the numerical control valve (14).

[0029] Lightweight plastics commonly used in automobiles are separated by the No. 1 density separation device (2), such as image 3 , low-density polyethylene LDPE, polypropylene PP because the density is less than 0.94g / cm solution in No...

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Abstract

The invention provides a density separation method for light plastics commonly used in automobiles. Different densities of different plastics are used to realize separation and recovery of the lightweight plastics commonly used in automobiles. The method mainly comprises the following steps: processed lightweight plastics commonly used in the waste automobiles are delivered into a first density separation device (2) from a storage device; low-density polyethylene (LDPE) and polypropylene (PP) float into a second density separation device (3), and high-density polyethylene (HDPE) and acrylonitrile-styrene-butadiene copolymer (ABS) resin sink into a third density separation device (4); the PP separated by the second density separation device (3) floats into a cleaning device (5), is cleaned,enters a first hot air drying device (10), and is dried and recovered, and the LDPE sinks to a second cleaning device (6), is cleaned, enters a second hot air drying device (11), and is dried and recovered; and the HPDE separated by the density separation device (4) floats into a third hot air drying device (12), and is dried and recovered, and the ABS resin sinks into a fourth hot air drying device (13), and is dried and recovered. The method has the advantages of simplicity in operation, low cost, and realization of resource reuse.

Description

technical field [0001] The invention relates to a density separation method for lightweight plastics commonly used in automobiles, and belongs to the technical field of separation and recovery of waste plastics. Background technique [0002] Now with the development of the times, people's demand for cars is gradually increasing, and there are more and more scrapped cars. The amount of plastics used in the automotive industry is very large, and there are many types of plastics used in waste cars, which are difficult to recycle directly. Moreover, the performance of recycled products after mixing different plastics is very poor, and the recycling value of waste plastics cannot be maximized. Therefore, how to achieve efficient and clean separation of different types of plastics is a prerequisite for the recycling of automotive plastics. Therefore, we need to design a method for the separation and recycling of lightweight plastics commonly used in automobiles, to solve the abov...

Claims

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Application Information

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IPC IPC(8): B29B17/02
CPCB29B17/02B29B2017/001B29B2017/0203B29B2017/0244Y02W30/62
Inventor 王丽娟高琪琳孙丽晶王璐焦思宇王宇粮孙子龙孔燕琴李合玉邢文韩立彬
Owner CHANGCHUN UNIV OF TECH
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