Regeneration method of anhydrous waste plastic

Abstract

The invention discloses a regeneration method of anhydrous waste plastic without washing. The method comprises the steps of crushing, purifying, dust absorbing, separating, pelletizing, sized dicing and packing, and specifically comprises the steps as follows: (1) crushing and purifying: crushing a polyethylene or polypropylene material in a crushing machine, and sequentially performing the steps of purifying by gravity, purifying by magnetic force, purifying by cutting, and falling impurity by inertia; (2) dust absorbing and separating: separating the crushed and purified material in three stages through a dust collector, a cyclone separator and a separator; and (3) pelletizing, sized dicing and packing, wherein the pelletizing comprises three forms: heating by a first pelletizer, reheating and filtering residue by a second pelletizer, and pelletizing by a third pelletizer, and qualified plastic wire produced in the third pelletizer is weighed and packed after being sized dicing. The regeneration method disclosed by the invention has the advantages of no need of washing, less pollution, low labor intensity, short process, simple device, low cost, and high recovery rate.

Description

technical field [0001] The invention relates to the technical field of plastic recycling chemical manufacturing, in particular to a waterless dry recycling method for waste plastics. Background technique [0002] Since the advent of plastic products, they have been widely used in various industries in society, promoted social development and progress, brought great convenience to people's production and life, and the amount of social use is increasing. However, the impact and harm of various waste plastics on the environment have also increased, and the recycling of waste plastics has developed into an important part of the renewable resource industry. [0003] In the current prior art, waste plastics have been processed by washing with water. This method is backward in technology, requires a lot of labor, high labor intensity, low production efficiency, high energy consumption, harsh working environment, and large loss of waste plastics, especially the large water consumpti...

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Problems solved by technology

[0003] In the current prior art, waste plastics have been processed by washing with water. This method is backward in technology, requires a lot of labor, high labor intensity, low production efficiency, high energy consumption, harsh working environment, and large loss of waste plastics, especially the large water consumption. , continuously flushing, causing a large amount of sewage and sludge mixed with plastic wire to be discharged, seriously polluting rivers and groundwater sources, polluting the surrounding environment and a large amount of farmland

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