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Plastic-based waste cracking process

A waste and plastic-based technology, applied in educts, petroleum industry, preparation of liquid hydrocarbon mixtures, etc., can solve problems such as environmental hazards and high costs, and achieve the effects of reducing processing costs, improving processing efficiency, and high degree of mechanization

Inactive Publication Date: 2021-01-19
HUNAN YINGHONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the plastic-based wastes are mainly treated by landfill and garbage incineration. These two treatment methods will undoubtedly cause greater harm to the environment.
At present, the cost of recycling plastic-based waste is high. How to use mechanized technology to recycle and effectively crack plastic-based waste is a subject that the industry has been studying.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A plastic-based waste pyrolysis process, comprising the following steps:

[0021] (1) Feed the plastic-based waste to the shredder through the belt conveyor, and crush the plastic-based waste to a particle size of 50 mm;

[0022] (2) The crushed plastic-based waste is dispersed by a vibrating conveyor, and then transported to a bouncing screen to remove metal substances in the waste. The bouncing screen separates 3D and 2D materials, which contain a large amount of plastic-based waste The 2D material of the waste is sent out through the discharge conveyor, and the large pieces of magnetic metal mixed with it will enter the magnetic separator, and the small pieces of magnetic metal will be screened out by the magnetic roller at the end of the conveyor, thereby removing the metal substances in the waste . ;

[0023] (3) The plastic after sieving out the metal is sent to the drying system through the discharge auger for dehydration treatment, and after the moisture conte...

Embodiment 2

[0027] A plastic-based waste pyrolysis process, comprising the following steps:

[0028] (1) Feed the plastic-based waste to the shredder through the belt conveyor, and crush the plastic-based waste to a particle size of 45mm;

[0029] (2) The crushed plastic-based waste is dispersed by a vibrating conveyor, and then transported to a bouncing screen to remove metal substances in the waste. The bouncing screen separates 3D and 2D materials, which contain a large amount of plastic-based waste The 2D material of the waste is sent out through the discharge conveyor, and the large pieces of magnetic metal mixed with it will enter the magnetic separator, and the small pieces of magnetic metal will be screened out by the magnetic roller at the end of the conveyor, thereby removing the metal substances in the waste . ;

[0030] (3) The plastic after the metal is sieved is sent to the drying system through the discharge auger for dehydration treatment, and after the moisture content ...

Embodiment 3

[0034] A plastic-based waste pyrolysis process, comprising the following steps:

[0035] (1) Feed the plastic-based waste to the shredder through the belt conveyor, and crush the plastic-based waste to a particle size of 55 mm;

[0036] (2) The crushed plastic-based waste is dispersed by a vibrating conveyor, and then transported to a bouncing screen to remove metal substances in the waste. The bouncing screen separates 3D and 2D materials, which contain a large amount of plastic-based waste The 2D material of the waste is sent out through the discharge conveyor, and the large pieces of magnetic metal mixed with it will enter the magnetic separator, and the small pieces of magnetic metal will be screened out by the magnetic roller at the end of the conveyor, thereby removing the metal substances in the waste . ;

[0037] (3) The plastic after the metal is sieved is sent to the drying system through the discharge auger for dehydration treatment, and after the moisture content...

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PUM

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Abstract

The invention discloses a plastic-based waste cracking process. The process comprises the following steps: crushing plastic-based waste into particles with the particle size of 30-60 mm by adopting ashredder; then removing metal substances in the waste by utilizing a bouncing screen after shaking off; drying the plastic from which the metal is screened out, and cracking to obtain a cracking product; introducing a gas-phase product in the cracking product into an oil-gas condensation module to be cooled, conveying condensed fuel oil to a tank area to be stored, and taking a non-condensable light-component gas phase as fuel of a cracking system and a melting system; and recycling the solid product carbon through a discharging auger. According to the method, the plastic-based waste can be subjected to resource recycling in a harmless treatment mode, the mechanization degree of the process is high, the treatment cost is greatly reduced, and meanwhile the treatment efficiency is high.

Description

technical field [0001] The invention relates to the technical field of plastic recycling, in particular to a plastic-based waste pyrolysis process. Background technique [0002] According to statistics, at present, hundreds of millions of tons of plastic-based waste can be generated in the world every year, but only 9% of plastic waste is recycled. China is a big country in the production and use of plastics, which produces about 40 million tons of plastic-based waste every year and grows at an annual rate of 8%. [0003] At present, the major disposal methods of plastic-based waste are landfill and waste incineration. These two disposal methods will undoubtedly cause great harm to the environment. At present, the cost of recycling plastic-based waste is high. How to use mechanized technology to recycle and effectively crack plastic-based waste is a subject that the industry has been studying. Contents of the invention [0004] Based on this, the object of the present in...

Claims

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Application Information

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IPC IPC(8): C10B53/07C10G1/10
CPCC10B53/07C10G1/10Y02P20/143
Inventor 方映杰游和求刘曼丽方征程
Owner HUNAN YINGHONG SCI & TECH