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Preparation method of reclaimed rubber

A technology for reclaimed rubber and waste rubber powder, which is applied in the field of solid waste recycling, can solve the problems of difficult reuse of waste residues, insufficient utilization of sludge, and incomplete treatment of sludge, so as to avoid quality degradation and shorten desulfurization. Time, the effect of reducing the difficulty of chain breakage

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the treatment of sewage sludge is not thorough, which still contains a large amount of oil components, and it is difficult to reuse the discharged waste residue. Strictly speaking, it does not effectively make full use of the sludge

Method used

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  • Preparation method of reclaimed rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) The raw material composition of oily solid waste includes raw material A40wt%, raw material C35wt%, raw material D25wt%, use a plate and frame filter press for dehydration, the dehydrating agent used is polyacrylamide, and the dosage is 1.5% of the raw material mass , the moisture content after dehydration is 72.8wt%;

[0032] (2) Use No. 190 solvent oil as a pretreatment agent, and mix it with the dehydrated material in step (1) at 45°C to evenly mix, and conduct solid-liquid separation after sedimentation. The amount of the pretreatment agent is the weight of the oily solid waste raw material 2 times of

[0033] (3) Use the waste oil recovered from the sewage treatment plant as a treatment agent, mix it with the solid separated in step (2), react at 110°C for 8 hours, and then separate the solid and liquid. The amount of the treatment agent is the separated solid phase material 1 times the weight;

[0034] (4) The solid phase obtained after the solid-liquid sepa...

Embodiment 2

[0038] (1) The raw material composition of oily solid waste includes raw material A40wt%, raw material C35wt%, raw material D25wt%, use a plate and frame filter press for dehydration, the dehydrating agent used is polyacrylamide, and the dosage is 1.5% of the raw material mass , the moisture content after dehydration is 70.4wt%;

[0039] (2) Use propanol as a pretreatment agent, mix evenly with the dehydrated material in step (1) at 30°C, and conduct solid-liquid separation after sedimentation. The amount of the pretreatment agent is 6% of the weight of the oily solid waste raw material times;

[0040] (3) Diesel oil is used as a treatment agent, mixed with the solid separated in step (2), reacted at 120°C for 8.5 hours, and then separated from solid and liquid, the amount of the treatment agent used is 6 times the weight of the separated solid phase material;

[0041](4) The solid phase obtained after the solid-liquid separation in step (3) is contacted with the mixed gas an...

Embodiment 3

[0045] (1) The raw material composition of oily solid waste includes 60wt% of raw material B, 20wt% of raw material C, and 20wt% of raw material D. The plate and frame filter press is used for dehydration. The dehydrating agent used is polyacrylamide, and the dosage is 1.5% of the raw material mass , the moisture content after dehydration is 70.1wt%;

[0046] (2) Use No. 180 solvent oil as a pretreatment agent, mix it with the dehydrated material in step (1) under the condition of 50°C, and carry out solid-liquid separation after sedimentation. The amount of the pretreatment agent is the weight of the raw material of oily solid waste 2.5 times;

[0047] (3) Using kerosene as a treatment agent, mixing with the solid separated in step (2), reacting at 125°C for 12 hours, and then separating the solid and liquid, the amount of the treatment agent is 4 times the weight of the separated solid phase material;

[0048] (4) The solid phase obtained after the solid-liquid separation i...

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Abstract

The invention discloses a reclaimed rubber preparation method, which comprises: (1) contacting an oil-containing solid waste raw material with a pretreatment agent to treat, and carrying out solid-liquid separation; contacting a solid-phase material obtained after solid-liquid separation with a treating agent for reaction, contacting a solid phase obtained after solid-liquid separation of a reaction product with vapor-containing gas for treatment, and obtaining a reclaimed rubber matrix after treatment; and mixing with waste rubber powder, and carrying out desulfurization treatment to obtain a reclaimed rubber product. The preparation method of the reclaimed rubber not only realizes resource utilization of the oil-containing solid wastes, but also obtains the reclaimed rubber meeting the requirements.

Description

technical field [0001] The invention belongs to the technical field of solid waste resource treatment, in particular to a method for preparing reclaimed rubber with solid waste as the main raw material. Background technique [0002] The production of reclaimed rubber is the most important way to utilize waste rubber in my country, and the total amount reaches about 80% of the waste rubber utilization. Widely used in various rubber products, tires and rubber shoes and other products. Reclaimed rubber not only alleviates the shortage of resources, but also reduces the environmental pollution caused by waste rubber. Waste rubber regeneration refers to the use of physical, chemical or other methods to restore vulcanized rubber to an unvulcanized state, that is, to open the S-S bond and C-S bond without destroying the C-C bond, and to selectively destroy the three-dimensional network structure of the rubber without causing macromolecular chains. To realize the reuse of vulcaniz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/10C08J11/22C08L19/00
CPCC08J11/10C08J11/22C08J2319/00Y02W30/62
Inventor 回军孙浩程刘春阳李宝忠王宜迪
Owner CHINA PETROLEUM & CHEM CORP
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