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A method for thermal regeneration of waste rubber

A waste rubber, thermal regeneration technology, applied in the preparation of liquid hydrocarbon mixture, treatment of hydrocarbon oil, petroleum industry, etc., can solve the environmental pollution of incoming and outgoing materials, the high price of environmentally friendly softeners, and the lack of regenerated rubber hydrocarbon composition products Evaluation plan and other issues to achieve the effect of improving processing efficiency

Inactive Publication Date: 2016-08-03
陈汇宏 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The combined equipment used in the thermal regeneration treatment of waste rubber such as waste tires does not require the addition of a large amount of powder auxiliary materials with high flying pollution in the thermal regeneration treatment process it serves, so it is not equipped with airtight In the prior art, when adding materials to the dynamic tank, manual open operation is adopted. The materials after high temperature treatment are directly exposed to the open discharge in the air, so the incoming and outgoing materials are all serious environmental pollution
[0013] For a long time, there have always been two so-called "consensus" that hinder technological progress in this technical field. One is: the price of environmental softening softeners is too expensive, and the market does not accept its use in recycled rubber formulations; the other is: domestic The quality standards of various regenerated rubbers outside the United States implicitly advocate that the content of rubber hydrocarbons in products should be high, and the quality standards do not recognize recycled rubber products with low rubber hydrocarbon content, and there is also a lack of evaluation schemes for products with low content of recycled rubber hydrocarbons

Method used

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  • A method for thermal regeneration of waste rubber
  • A method for thermal regeneration of waste rubber
  • A method for thermal regeneration of waste rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169](1-1) Preparation: Take 100 parts by weight (hereinafter referred to as "parts") of the rubber coarse powder of the tire top part of the waste tires that have been removed from the fibers and steel wire impurities, and can be operated in a closed manner. The materials are introduced into a closed stirring heating tank one by one, and some formulation auxiliaries such as softeners that meet environmental protection requirements are added first, and some formulation auxiliaries are added first. The composition is: 150 parts of softeners, specifically including: environmental protection 15 parts of type rubber filler oil, 67 parts of No. 30 motor oil, 10 parts of paraffin wax, 28 parts of stearic acid; 3 parts of antioxidant, the variety used: 2,6-di-tert-butyl-p-cresol; 13 parts of water. The softener can be pre-heated and mixed, and then metered by a pump. The order of feeding waste rubber coarse powder and formulation auxiliaries can be reversed, especially if water is a...

Embodiment 2

[0176] (2-1) Preparation: Take 100 parts of the 20-40 mesh sieve waste tire rubber coarse powder that has been removed from fibers and steel wire impurities, introduce it into a closed stirring heating tank, and first add a softener that meets environmental protection requirements and other formulation auxiliaries, the first part of the formulation auxiliaries is added, which is composed of: 32 parts of softener, specifically including: 10 parts of environmentally friendly rubber filler oil, 16 parts of No. 40 engine oil, 4 parts of paraffin wax, 2 parts of stearic acid parts; 3 parts of antioxidant, the variety used: 2,6-di-tert-butyl-p-cresol; 13 parts of water. The feeding sequence of the waste rubber coarse powder and formulation auxiliaries can be reversed. The environmental softening agent in the formulation auxiliary, the weight ratio of waste rubber coarse powder to it is 100 / 32. After the charging is completed, close the charging door, open the intake and exhaust val...

Embodiment 3

[0182] (3-1) Preparation: 100 parts of the crude rubber granules of waste butyl water tires with a size of about 5 meshes are introduced into a closed stirring heating tank, and some formulation auxiliaries such as softeners that meet environmental protection requirements are added first. Said first adding part of the formulation auxiliary, which consists of: 55.5 parts of softener, specifically including: 26 parts of environmentally friendly rubber filler oil, 10 parts of paraffin wax, 6.5 parts of microcrystalline wax, 13 parts of stearic acid; 13 parts of water. The feeding sequence of the waste rubber coarse powder and formulation auxiliaries can be reversed. The environmental softening agent in the formulation auxiliary, the weight ratio of waste rubber coarse powder to it is 100 / 55.5. After the charging is completed, close the charging door, open the intake and exhaust valves, first fill with nitrogen to drive out the oxygen-containing air brought into the tank from the ...

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Abstract

The present invention proposes a method for thermal regeneration of waste rubber, which is to feed materials with a weight ratio of "waste rubber coarse powder / environmentally friendly softener / powder auxiliary material" in the range of 100 / 8-150 / 20-1500, stir and heat In the container, it is first heated by anaerobic, and then introduced into the stirring cooler, cooled to below 100 ℃, and the product is obtained; or part or all of the powder auxiliary materials in the feeding are deducted and slowly thrown, and the materials that are fed into the stirring heater in the early stage Before the material is to be discharged, add the powder auxiliary material deducted first to the stirring heater, or / and add it when the hot material is introduced into the stirring cooler, and discharge the material after the mixture is cooled to below 100°C; or the formula After initial mixing, the material is introduced into the screw extruder, and after heating and mixing, the material is cooled to 100°C to obtain the product; Or in addition, between the process of preparing carbon black from combustible fuel and combustible gas, a multi-directional migration relationship of materials or / and energy is established.

Description

technical field [0001] The invention proposes a method for thermal regeneration of waste rubber, which belongs to the technical category of waste rubber regeneration processing and utilization. technical background [0002] Today is an era of emphasizing circular economy and sustainable development. The recycling and utilization of waste rubber should be a must for my country, a country with poor rubber resources and serious environmental pollution, to practice circular economy and sustainable development, and to carry out economic construction and national rejuvenation. The Sunshine Industry is focusing on the great development, but the development of recycling technology for waste tire rubber that exceeds 60% of the total waste rubber is still immature, especially for the use of waste tires through crushing, separation, high-temperature sulfur removal and other treatments to prepare recycled rubber. The technology, the so-called "thermal regeneration" technology, has not bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08K13/02C08K5/09C08K3/04C08K5/13
CPCC08J11/12C08J2321/00C08L17/00C10G1/10C10G2300/1003C08J2319/00Y02W30/62B29B7/7495B29B7/42B29B7/48B29B7/66B29B7/885B29B7/72B29B7/823B29B7/90
Inventor 陈汇宏胡嘉庆
Owner 陈汇宏
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