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Heat regeneration method for waste rubber

A thermal regeneration and waste rubber 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: 2011-04-27
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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  • Heat regeneration method for waste rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0164](1-1), preparation: get 100 parts by weight (hereinafter all referred to as "parts") of the waste tire top part rubber coarse powder that has been removed from fibers and steel wire impurities and pass through a 20-40 mesh sieve, and airtight operation can be adopted. Import the materials one by one into a closed stirring and heating tank, and first add some formulation aids such as softeners that meet environmental protection requirements. 15 parts of type rubber filler oil, 67 parts of No. 30 machine oil, 10 parts of paraffin, 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 hot-mixed in advance, and then metered by a pump. The feeding sequence of waste rubber coarse powder and formulation additives can be reversed, especially water should be added first, so as to prevent hot tank burning. The weight ratio of the environmentally friendly softening agent in the formulation aid to the ...

Embodiment 2

[0171] (2-1), Preparation: Take 100 parts of the waste tire rubber coarse powder material that has been removed from fibers and steel wires and pass through a 20-40 mesh sieve, and introduce it into a closed stirring and heating tank, and first add a softener that meets environmental protection requirements and other part of the formulation aids, the first part of the formulation aids is added, which consists 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, 2 parts of stearic acid 3 parts; 3 parts of antioxidant, the variety adopts: 2,6-di-tert-butyl-p-cresol; 13 parts of water. The feeding sequence of the waste rubber coarse powder and formula additives can be reversed. The weight ratio of the environmentally friendly softening agent in the formulation aid to the waste rubber coarse powder is 100 / 32. After the filling is completed, close the charging door, open the in...

Embodiment 3

[0177] (3-1), preparation: import 100 parts of coarse rubber pellets of waste butyl water tires of about 5 mesh into an airtight stirring heating tank, first add some formula auxiliary agents such as softeners that meet environmental protection requirements, and First add part of the formulation auxiliary, which is composed of: 55.5 parts of softener, specifically including: 26 parts of environment-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 formula additives can be reversed. The weight ratio of the environmentally friendly softening agent in the formulation aid to the waste rubber coarse powder is 100 / 55.5. After the filling is completed, close the charging door, open the inlet and outlet valves, first use nitrogen to drive away the oxygen-containing air brought into the tank by filling and discharging the cylinder with nitrogen ...

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Abstract

The invention provides a heat regeneration method for waste rubber. The method comprises the following steps of: feeding a waste rubber crude powder material / environmentally-friendly softening agent / powder auxiliary material in the weight ratio of 100 / 8-150 / 20-1,500 into a stirring heater, performing anoxybiotic heating, introducing into a stirring cooler and cooling to the temperature of less than 100 DEG C so as to obtain a product; or partially or completely extracting the powder auxiliary material in the fed materials for slow feeding, adding the extracted powder auxiliary material into the stirring heater before the materials which are put into the stirring heater at an early stage are discharged, or / and adding the extracted powder auxiliary material when a hot material is introduced into the stirring cooler, cooling the mixture to the temperature of less than 100 DEG C and discharging; or initially mixing the materials in a formula, guiding the mixture into a screw extruder, allowing the mixture to pass through a heating section and a mixing section, cooling the material to the temperature of less than 100 DEG C and discharging a product; or performing thermal cracking on all-known waste rubber through heat regeneration or establishing a multi-direction migration relation for a material or / and energy in the process of preparing carbon black from fuel oil and fuel gas.

Description

technical field [0001] The invention proposes a method for heat regeneration of waste rubber, which belongs to the technical category of waste rubber regeneration processing and utilization. technical background [0002] Today is an era that emphasizes circular economy and sustainable development. The recycling of waste rubber should be necessary 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. Focusing on the development of the Sunshine Industry, but due to the immature development of waste tire rubber regeneration technology that exceeds 60% of the total waste rubber, especially for the preparation of regenerated rubber from waste tires through crushing, separation, high-temperature sulfur breaking, etc. Technology, that is, the so-called "thermal regeneration" technology is not developed enough, resulting in 70%...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08K13/02C08K5/09C08K3/04C08K5/13
CPCC10G2300/1003C08L17/00C08J2321/00C08J11/12C10G1/10C08J2319/00Y02W30/62B29B7/7495B29B7/42B29B7/48B29B7/66B29B7/885B29B7/72B29B7/823B29B7/90
Inventor 陈汇宏胡嘉庆
Owner 陈汇宏
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