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Recovery process and device for synthetic fiber waste

A synthetic fiber and recovery device technology, applied in the field of synthetic fiber resource recovery technology, can solve problems such as environmental pollution, post-processing and recovery difficulties, waste, etc., and achieve the effects of simplified process flow, high degree of automation, and water reduction

Active Publication Date: 2014-01-15
湖北绿宇环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main disadvantage of this process is that a large amount of water is needed in the early cleaning step of waste silk, and the water after cleaning contains oily agents, which makes post-processing and recycling very difficult.
Directly causing the use of a large amount of water in the cleaning step is not only wasteful, but also pollutes the environment after the water after cleaning is discharged

Method used

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  • Recovery process and device for synthetic fiber waste
  • Recovery process and device for synthetic fiber waste
  • Recovery process and device for synthetic fiber waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1: A kind of recycling process of synthetic fiber waste.

[0058] The following takes the recycling of polyester industrial yarn waste as an example to further illustrate the present invention. Using the recycling process of the present invention, other synthetic fiber waste such as nylon and polypropylene waste silk, waste melt, waste blocks, etc. can also be recycled.

[0059] Such as figure 1 As shown, the recovery process of a synthetic fiber waste of the present invention includes waste detection - crushing and dehumidification - extrusion melting - filtration - casting belt pelletizing.

[0060] 1. Waste detection:

[0061] Pass the polyester industrial yarn waste through the metal detector to remove the metal impurities in the waste, and transport the waste without metal impurities to the crusher for crushing;

[0062] 2. Crushing and dehumidification:

[0063] The detected waste is sent to the crusher for crushing, and heated and dehumidified. The ...

Embodiment 2

[0077] The production process is the same as in Example 1, the difference is that in the crushing and dehumidification process of step 2, only the waste materials are crushed, and the hollow hob heated by the water bath is not used for heating and dehumidification. The details are as follows: send the detected waste materials into the crusher After crushing, the waste is crushed into powders with a length of 1-50mm.

[0078]

Embodiment 3

[0080] The production process is the same as in Example 1, the difference is that the filtration process only adopts one-stage filtration, the precision of the one-stage filtration is 30-60 microns, and the filtration temperature is controlled at 270-290°C. After the melt passes through one-stage filtration, the Sent to cast strips for cutting pellets.

[0081]

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PUM

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Abstract

The invention discloses a recovery process and a device for synthetic fiber waste. The recovery process is characterized by comprising the following steps: detecting waste: passing the synthetic fiber waste through a metal detector to remove metal impurities in the waste; crushing the waste and removing moisture: sending the detected waste in a crusher to crush, and heating to remove moisture; squeezing and fusing: squeezing and fusing the crushed and moisture-removed waste in an extruder, carrying out vacuum pumping to the fused melt, filtering with a first filter and a second filter, and then casting strips and granulating. The recovery process eliminates the forepart rinsing and drying step. The vacuum pumping step can remove low-boiling-point substances, impurities, oil solution and moisture in the waste fiber. The forepart pretreatment working procedure is eliminated; the waste fiber is directly recovered and recycled.

Description

[0001] Technical field: [0002] The invention discloses a recovery process and device for synthetic fiber waste, belonging to the technical field of synthetic fiber resource recovery process. [0003] Background technique: [0004] Protecting the environment and saving resources are difficult problems that the world needs to solve together. In particular, the synthetic fiber industry, which is highly dependent on petroleum resources and has a large volume and wide area, is particularly prominent. The recycling and reuse of waste silk not only protects the environment but also reuses resources, which is an inevitable direction for future development. [0005] The main steps of the existing synthetic fiber waste silk recovery process are as follows: the waste silk must first be cleaned or washed, and then dried to remove oil and other sundries in the waste silk, and then melted and pelletized or made into bubbles material. [0006] The main disadvantage of this process is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/06
CPCY02W30/62
Inventor 陈文兴张祥张德慧石教学张志诚
Owner 湖北绿宇环保有限公司
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