Method of producing environment-friendly regenerated rubber via low-temperature desulfurization

A reclaimed rubber, environmental protection technology, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems that affect the health of enterprise operators, affect the health of workers, pollute the environment, etc., achieve fast chemical bond chain breaking, remove easy agglomeration, The effect of eliminating environmental pollution

Active Publication Date: 2018-06-29
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using waste tires and other rubber products to produce traditional regenerated rubber uses dynamic desulfurization tanks to desulfurize at high temperatures (220 to 300°C), changing elastomers into plastics. During this production process, a large amount of toxic substances are produced due to high temperature The exhaust gas and waste water seriously pollute the environment and affect the health, especially the health of the workers in the enterprise. In severe cases, it may even cause cancer.
At present, the government pays special attention to the problem of environmental pollution. Therefore, the Environmental Protection Bureau has closed down many small reclaimed rubber companies that do not meet the environmental protection standards. Some large reclaimed rubber companies have invested a lot of money in the treatment of waste gas and waste water. bad smell

Method used

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  • Method of producing environment-friendly regenerated rubber via low-temperature desulfurization
  • Method of producing environment-friendly regenerated rubber via low-temperature desulfurization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Each raw material and its mass parts are:

[0035] Whole tire rubber powder (60 mesh) 100 parts

[0036] Activator DM 1.0 parts

[0037] Stearic acid S A 1.0 copies

[0038] Mooney stabilizer 264 (winter) 1.3 parts

[0039] Rosin 1.0 parts

[0040] Pine tar 24.0 parts

[0041] The compound high-efficiency regenerative activator is composed of regenerative activator DM and stearic acid S A Prepared according to the mass ratio of 1:1, respectively 1.0 parts by mass.

[0042] The preparation is carried out according to the following steps: the particle size of the steel wire tire rubber powder used for regeneration is selected to be 60 mesh. First, perform a stage of regeneration: in winter, place 100.0 parts by mass of 60-mesh whole tire rubber powder, 2.0 parts by mass of compound high-efficiency regeneration activator (DM / stearic acid by mass 1.0 / 1.0) and 1.3 parts by mass of 264 Mooney stabilizer. Mix in an internal mixer (glue capacity 5L) for 1 min; then add...

Embodiment 2

[0044] Each raw material and its mass parts are:

[0045] Whole tire rubber powder (80 mesh) 100 parts

[0046] Activator DM 2.0 parts

[0047] Stearic acid S A 2.0 copies

[0048] Mooney stabilizer 264 (spring, autumn) 1.5 parts

[0049] Rosin 1.0 parts

[0050] 16.0 parts of tall oil

[0051] The compound high-efficiency regenerative activator is composed of regenerative activator DM and stearic acid S A It is formulated according to the mass ratio of 1:1.

[0052] The preparation is carried out according to the following steps: the particle size of the steel wire tire rubber powder used for regeneration is selected to be 80 mesh. First perform a stage of regeneration: 100.0 parts by mass of 80-mesh whole tire rubber powder, 4.0 parts by mass of compound high-efficiency regeneration activator (DM / stearic acid 2.0 / 2.0), and 1.5 parts by mass of Mooney stabilizer 264 (spring and autumn) Place them together in a desulfurization tank and knead for 2 minutes; then add envi...

Embodiment 3

[0054] Each raw material and its mass parts are:

[0055] Whole tire rubber powder (60 mesh) 100 parts

[0056] Activator DM 1.5 parts

[0057] Stearic acid S A 1.5 servings

[0058] Mooney stabilizer 264 (summer) 1.6 parts

[0059] Rosin 1.0 parts

[0060] Pine tar 24.0 parts

[0061] The composite high-efficiency regenerative activator DM / stearic acid is composed of regenerative activator DM and stearic acid in a mass ratio of 1:1.

[0062] The preparation is carried out according to the following steps: the particle size of the steel wire tire rubber powder used for regeneration is selected to be 60 mesh. First perform a stage of regeneration: put 100.0 parts by mass of 60-mesh whole tire rubber powder, 3.0 parts by mass of compound high-efficiency regeneration activator DM / stearic acid (1.5 / 1.5) and 1.6 parts of Mooney stabilizer 264 (summer) in the open Mix on the mill for 2 minutes; then add the environmentally friendly softener pine tar to the mixed rubber powde...

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Abstract

The invention discloses a method of producing environment-friendly regenerated rubber via low-temperature desulfurization. The method includes the steps of: 1) low-temperature desulfurization througha desulfurization tank or an internal mixer: feeding rubber powder, a composite regenerating activator, and a Mooney stabilizer into the desulfurization tank or internal mixer, performing pressurizedmixing for a certain time, adding an environment-friendly softener such as rosin, performing pressurized mixing for a certain time, heating the material to 120 +/- 5 DEG C for desulfurization regeneration; 2) after regeneration for a certain time, cooling the material to lower than 70 DEG C, discharging the material into a cooling stirrer; 3) at 120 +/- 5 DEG C, delivering the material to a doublescrew plasticizer, cooling the material and discharging the material to a storage plate, and delivering the material to a refiner; 4) circulating the rubber at 40 DEG C in a thin-passing manner for 5min, and automatically cutting and weighing the rubber. The technology has outstanding economic and social benefits.

Description

technical field [0001] The invention relates to a method for producing environmentally friendly reclaimed rubber through low-temperature desulfurization, which belongs to the field of regenerated rubber preparation. Background technique [0002] The amount of waste rubber materials is second only to waste plastics among waste and old polymer materials. Among them, my country's tire production ranks first in the world, and the number of automobiles ranks first in the world (about 194 million vehicles). The annual scrapping volume of automobile tires in China is more than 350 million, with a mass of about 12.7 million tons. China's rubber consumption ranks first in the world, about 9 million tons, of which 56% of rubber consumption needs to be imported, so the recycling of waste rubber can alleviate the shortage of rubber raw materials to a certain extent, realize the reuse of waste resources, and benefit the social economy of sustainable development. [0003] Using waste ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/26C08J11/24C08J11/18C08L19/00
CPCC08J11/18C08J11/24C08J11/26C08J2319/00Y02W30/62
Inventor 王艳秋祝木伟丛后罗翁国文张小萍孙鹏曹卫东
Owner XUZHOU COLLEGE OF INDAL TECH
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