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Reclaimed rubber plasticizer and preparation method thereof

A technology for reclaimed rubber and plasticizer, which can be used in tar processing by selective solvent extraction, tar removal processing by water, solid fuel, etc. It can solve the problems of naphthalene sublimation and affecting the quality stability of recycled rubber.

Inactive Publication Date: 2010-09-01
石其贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to solve the sublimation problem of naphthalene, a plasticizer for recycled rubber, low-naphthalene high-temperature coal tar should be selected as plasticizer for recycled rubber
[0016] In order to solve the impact of recycled rubber plasticization on the quality stability of recycled rubber, dehydrate coal tar with lower naphthalene content, adjust the viscosity, and prepare recycled rubber plasticizers with stable quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Manufacturing: 1 anthracene oil tank, 2 extraction tanks, and 1 dehydration tank.

[0020] Add 15 tons of tar residue and 2 tons of anthracene oil in the extraction tank, heat to 80-90° C., stir for 30 minutes, and release 15 tons of regenerated rubber plasticizer semi-finished products from the oil outlet.

[0021] Add 2 tons of anthracene oil to the extraction tank, wash the tar residue, and put washing liquid from the oil outlet for standby.

[0022] Release 2 tons of coke powder from the slag outlet, and remove anthracene oil with a centrifuge. Coke powder is extruded into a cylindrical shape and heated in a furnace at 600°C for 30 minutes to form high-strength coke.

[0023] The regenerated rubber plasticizer is added to the dehydration tank, the dehydration is below 4%, and the viscosity is adjusted to an appropriate range, that is, the finished regenerated rubber plasticizer.

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Abstract

The invention relates to a reclaimed rubber plasticizer and a preparation method thereof, and belongs to the fields of environmental protection and chemical industry. All the reclaimed rubber plasticizers in the region adopt high-temperature coal tar. Due to the adjustment of raw materials of a coking plant and a process, the quality stabilization of the reclaimed rubber plasticizer is influenced. In a rubber product made of the reclaimed rubber, due to the sublimation of naphthalene, a layer of white sublimated naphthalene is condensed on the surface of the product so as to influence the quality of the product. Coal tar slag in the coking plants in the region is dumped out of the plants as rubbish, so that resources are wasted and environments are polluted. In order to solve the problems, the invention provides the reclaimed rubber plasticizer and the preparation method thereof. The preparation method comprises the following steps of: separating the coal tar from coke powder in the coal tar slag by an anthracene oil extracting process to obtain the coal tar with lower naphthalene content; dehydrating the coal tar with lower naphthalene content; and adjusting the viscosity of the dehydrated coal tar to prepare the reclaimed rubber plasticizer with stable quality. When the produced reclaimed rubber plasticizers are conveyed to a plurality of reclaimed rubber manufacturing plants to be used, the using amount is low, the quality is stable, and no white sublimated naphthalene is on the surface of the product.

Description

technical field [0001] A recycled rubber plasticizer and a preparation method thereof belong to the field of environmental protection and the field of chemical industry. Background technique [0002] Waste rubber, such as waste rubber tires, has a large amount and is piled up like a mountain. How to deal with it is a worldwide environmental protection problem. Desulfurization and regeneration of waste rubber, such as waste rubber tires, to produce recycled rubber is a relatively mature technology. [0003] Reclaimed rubber refers to rubber that is processed from waste rubber, such as waste rubber tires, has a certain degree of plasticity and can be reused. [0004] Reclaimed rubber can partly replace raw rubber for rubber products, save raw rubber and carbon black, and is also conducive to improving the environment. [0005] The regeneration process is a process in which waste rubber breaks part of the molecular chains and cross-linking points of vulcanized rubber under th...

Claims

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Application Information

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IPC IPC(8): C08K11/00C08L17/00C10C1/18C10C1/02C10L5/06C10L5/28
Inventor 石其贵石见明
Owner 石其贵
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