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Three-stage-cooperated environment-friendly devulcanizing regeneration technology for waste/used rubber

A waste rubber and sulfur cutting technology, which is applied in recycling technology, plastic recycling, etc., can solve problems such as discontinuity in the production process, and achieve the effect of avoiding uncontrollable effects

Inactive Publication Date: 2016-07-20
ANHUI GVG NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ultrasonic sulfur removal method belongs to the physical method of sulfur removal and regeneration. It has the advantages of high efficiency, environmental protection, and high product quality. It has attracted widespread attention, but it has not been popularized and applied. The main reason is that its production process is intermittent.

Method used

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  • Three-stage-cooperated environment-friendly devulcanizing regeneration technology for waste/used rubber

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Effect test

Embodiment Construction

[0018] A three-stage synergistic green sulfur breaking regeneration process for waste rubber, comprising the following steps:

[0019] (1) The 3-8mm rubber particles obtained by crushing and separating the waste tires through the automatic linkage crushing line, and then the 3-8mm rubber particles are screwed into the double-rotor continuous mixer through the feeding device; in the double-rotor continuous mixing In the machine, the rubber molecules of the rubber particles are subjected to the high shear and strong tension of the double-rotor mixing flow field, which promotes their mixing and plasticization and the initial sulfur removal and regeneration of part of the rubber to obtain a rubber mixture;

[0020] (2) The rubber mixture obtained in the screw conveying step (1). During the spiral conveying process, an ultrasonic power generator is used to emit ultrasonic waves to act on the rubber mixture. The acoustic cavitation of the ultrasonic waves concentrates the energy on t...

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Abstract

The invention discloses a three-stage-cooperated environment-friendly devulcanizing regeneration technology for waste / used rubber. The technology comprises the steps of crushing waste / used tires by an automated linked crushing line, carrying out separation so as to obtain rubber granules with the granularity of 1mm to 10mm, feeding the rubber granules to a dual-rotor continuous mixer, subjecting the rubber granules to the high-shear and high tension action of the dual-rotor continuous mixer so as to prompt the mixed plasticization of the rubber granules and the preliminary devulcanizing regeneration of partial rubber, then, focusing energy on local positions of molecular bonds through the acoustic cavitation action of ultrasonic waves so as to directively destroy C-S bonds and S-S bonds, keep C-C bonds complete and achieve the further devulcanizing regeneration of the rubber, then, carrying out complete devulcanizing by a screw extruder, carrying out extrusion forming, finally, carrying out aftertreatment so as to obtain green and environment-friendly granular regenerated rubber, and carrying out packaging and warehousing. According to the technology, three-stage-cooperated environment-friendly devulcanizing regeneration is carried out progressively by bonding the advantages of the dual-rotor continuous mixer, the ultrasonic waves and the screw extruder so as to prepare the green and environment-friendly granular regenerated rubber product, and no chemical assistant is required to be added, so that the product has properties similar to those of crude rubber.

Description

technical field [0001] The invention relates to the field of waste rubber regeneration technology, in particular to a three-stage collaborative green sulfur breaking regeneration technology for waste rubber. Background technique [0002] With the rapid development of the automobile industry, the amount of waste tires is increasing, which constitutes a serious pollution to the surrounding environment. However, if waste rubber can be recycled reasonably, it will play a role in solving "black pollution" and alleviating the shortage of rubber resources in my country. Significance. Reclaimed rubber is the main way of comprehensive utilization of waste rubber in my country. There are many production methods, such as oil method, water-oil method, rapid stirring desulfurization method, dynamic desulfurization method, continuous plasticization method under normal pressure, etc. They have a common feature that they are all It belongs to chemical desulfurization and regeneration, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L17/00C08J11/10B29B17/04B29B7/46B29B9/06
CPCB29B7/46B29B9/06B29B17/0412C08J11/10C08L17/00Y02W30/62
Inventor 黎广瑞桂生蒋水金蒋化瑜李婷
Owner ANHUI GVG NEW MATERIAL CO LTD
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