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Efficient and environmentally-friendly recovery method for waste polyethylene fishing nets

A recycling method and polyethylene technology, applied in the direction of plastic recycling and recycling technology, can solve the problems of environmental pollution such as water quality and soil, the performance of recycled materials is greatly affected, and the separation effect cannot be achieved, so as to delay the aging process and avoid The effect of subsequent pollution and accelerated degradation

Inactive Publication Date: 2019-08-09
CHAOHU XIANGYU FISHING GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Modern fishing nets are mostly made of nylon and polyethylene as the main materials. They have the characteristics of anti-aging, corrosion resistance, and strong waterproof performance, which can greatly increase the service life of fishing nets and improve the efficiency and catch of fishing operations. It reduces fishing costs and is very popular among fishermen; however, the chemical properties of polyethylene are stable, and it is difficult to degrade in soil and water after fishing nets are discarded, which will pollute the water quality and soil environment, and may even cause harm to animals or people
However, there is currently no mature and effective recovery technology for fishing net recycling. Patent application: 201710426857.3 A treatment method for waste fishing nets, which provides a recycling technology for waste fishing nets. The final organic solvent has complex components and will cause environmental pollution, and it cannot separate other components added to polyethylene, which has a relatively large impact on the performance of recycled materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An efficient and environmentally friendly recycling method for waste polyethylene fishing nets, comprising the following steps:

[0019] (1) Aging treatment: Clean the polyethylene fishing nets with clear water, dry them in the sun, lay them flat and hang them in the light room to increase the uniformity of light on the fishing nets. Spraying can remove impurities and protect; then irradiate with fluorescent lamp for 43 minutes, and then irradiate with ultraviolet light for 25 minutes to promote the degradation and aging of other ingredients in the fishing net, and convert them into small molecular components, which are easy to separate. fishing net;

[0020] (2) Cooking treatment: add an additive solution with 10% water quality into the steamer, remove the stains attached to the fishing net, immerse in the fishing net and boil for 31 minutes in a closed manner, take it out and dry it at high speed, then immerse the additive solution in a closed container, Immersion tr...

Embodiment 2

[0030] An efficient and environmentally friendly recycling method for waste polyethylene fishing nets, comprising the following steps:

[0031] (1) Aging treatment: Clean the polyethylene fishing nets with clean water, dry them in the sun, lay them flat and hang them in the light room to increase the uniformity of light on the fishing nets. Spraying can remove impurities and protect; then use fluorescent lamps to irradiate for 49 minutes, and then use ultraviolet light for 28 minutes to promote the degradation and aging of other ingredients in the fishing net, and convert them into small molecular components, which are easy to separate. fishing net;

[0032] (2) Cooking treatment: add an additive solution with 12% water quality to the steamer, remove the stains attached to the fishing net, immerse in the fishing net and boil for 34 minutes in an airtight manner, take it out and dry it at high speed, then immerse the additive solution in a closed container, Dipping treatment f...

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PUM

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Abstract

The invention discloses an efficient and environmentally-friendly recovery method for waste polyethylene fishing nets. The method comprises the following steps: (1) washing the polyethylene fishing nets with clear water, spreading and hanging the fishing nets in a light room, spraying the fishing nets with an assistant solution, and respectively using fluorescent lamps and ultraviolet lights to irradiate the fishing nets; (2) adding the assistant solution into a steamer, immersing the fishing nets in the assistant solution, performing closed boiling, impregnating the boiled fishing nets in theassistant solution, and draining the fishing nets to obtain impregnated fishing nets; (3) adding an EM agent and the assistant solution into a fermenter culture solution, respectively carrying out aerobic fermentation and anaerobic fermentation, and taking out, washing and drying the obtained fishing nets to obtain fermented fishing nets; (4) performing layered distillation: carrying out layereddistillation on the fermented fishing nets at the bottom of a layered distillation tower, and granulating collected polyethylene to obtain polyethylene granules; and (5) performing constant pressure impregnation: immersing the polyethylene granules in the assistant solution at a constant temperature, and taking out and drying the polyethylene granules to obtain recycled polyethylene.

Description

technical field [0001] The invention belongs to the technical field of recycling and reutilization of discarded fishing nets, and in particular relates to an efficient and environmentally friendly recycling method for discarded polyethylene fishing nets. Background technique [0002] Modern fishing nets are mostly made of nylon and polyethylene as the main materials. They have the characteristics of anti-aging, corrosion resistance, and strong waterproof performance, which can greatly increase the service life of fishing nets and improve the efficiency and catch of fishing operations. It reduces fishing costs and is very popular among fishermen; however, the chemical properties of polyethylene are stable, and it is difficult to degrade in soil and water after fishing nets are discarded, which will pollute the water quality and soil environment, and may even cause harm to animals or people. However, there is currently no mature and effective recovery technology for fishing ne...

Claims

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Application Information

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IPC IPC(8): C08J11/06C08L23/06
CPCC08J11/06C08J2323/06Y02W30/62
Inventor 胡会敏
Owner CHAOHU XIANGYU FISHING GEAR