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Normal-pressure continuous desulfurizing method for rubber

A rubber and atmospheric technology, applied in the field of desulfurization, can solve the problems of serious safety hazards, low quality of reclaimed rubber products, and pollution of waste water and waste gas emissions, and achieve the effect of great economic and social benefits.

Inactive Publication Date: 2011-10-12
都江堰市新时代工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex and changeable raw materials, the fluctuation and intersection of its process parameters make the overall quality of reclaimed rubber products low and unstable
In addition, the pressure on the corresponding production equipment of these production methods is gradually increasing, the safety hazard is serious, and the discharge of waste water and waste gas leads to environmental pollution.
It is necessary to open the tank to cool down, charge the material to heat up, and the heat power consumed by the waste water and exhaust gas makes the overall energy consumption relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The method of continuous desulfurization of rubber at normal pressure is to crush the rubber, then add softener and activator to the crushed rubber powder and mix them uniformly, and desulfurize the uniformly mixed materials. The desulfurization treatment includes the following steps:

[0016] The material is continuously fed into the desulfurization pipeline through the fluidized bed for desulfurization. The diameter of the desulfurization pipeline is 180mm, and it is divided into five sections with equal distances. Each section of the desulfurization pipeline adopts external heating. According to the flow direction of the material, each section of the pipeline is heated by electromagnetic induction. The powers are 25kw, 25kw, 15kw, 15kw, 10kw respectively, the inside of the desulfurization pipeline is normal pressure, the length of each desulfurization pipeline is 3m, and the flow time of materials between the whole desulfurization pipeline is 18min. After the material...

Embodiment 2

[0018] The method of continuous desulfurization of rubber at normal pressure is to crush the rubber, then add softener and activator to the crushed rubber powder and mix them uniformly, and desulfurize the uniformly mixed materials. The desulfurization treatment includes the following steps:

[0019] The material is continuously fed into the desulfurization pipeline through the fluidized bed for desulfurization. The diameter of the desulfurization pipeline is 180mm, and it is divided into five sections with equal distances. Each section of the desulfurization pipeline adopts external heating. According to the flow direction of the material, each section of the pipeline is heated by electromagnetic induction. The powers are 25kw, 25kw, 15kw, 15kw, 10kw, the inside of the desulfurization pipeline is normal pressure, the length of each desulfurization pipeline is 4m, and the material flow time between the whole desulfurization pipeline is 20min. After the material comes out of the...

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Abstract

The invention provides a normal-pressure continuous desulfurizing method for rubber. The method comprises the following steps of: pulverizing rubber to obtain pulverized rubber powder, then adding a softening agent and an activator to the pulverized rubber powder, uniformly mixing, and desulfurizing the uniformly mixed material, wherein the desulfurizing process is performed by the following stepof continuously conveying the material to a desulfurizing pipeline through a fluidized bed for desulfurizing, the desulfurizing pipeline is divided into five equidistant segments, each segment of thedesulfurizing pipeline employs an external heating mode, each segment of the pipeline is subjected to electromagnetic induction heating according to the flowing direction of the material, and the heating power of upstream desulfurizing pipe is higher than that of downstream desulfurizing pipeline. The normal-pressure continuous desulfurizing method provided by the invention overcomes the defects that the prior art has gradual pressure improvement, serious hidden safety, serious environmental pollution caused by wastewater and exhaust gas discharge and high integral energy consumption, has high production efficiency and low energy consumption, and can be widely applied in rubber desulfurization.

Description

technical field [0001] The invention relates to a method for desulfurization, in particular to a method for continuous desulfurization of rubber under normal pressure. Background technique [0002] The regeneration of waste rubber is achieved by desulfurizing vulcanized rubber through chemical, thermal, oxygen and mechanical action. During this process, the network structure of the vulcanized rubber is destroyed and degraded. Most of the vulcanized rubber produces linear low-molecular rubber hydrocarbons, and a small part becomes molecular fragments containing bound sulfur. [0003] At present, there are three main processes for desulfurization and regeneration of rubber, namely oil method, water oil method and high temperature and high pressure dynamic desulfurization method. These three methods all belong to the intermittent production in the pressure vessel. Due to the complex and changeable raw materials, the fluctuation and intersection of its process parameters make ...

Claims

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Application Information

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IPC IPC(8): C08J11/10C08L17/00
CPCY02W30/62
Inventor 肖官禄
Owner 都江堰市新时代工贸有限公司
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