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Method for normal pressure continuous desulfurization of rubber

A rubber and normal pressure technology, applied in the field of desulfurization, can solve the problems of waste water and waste gas emissions polluting the environment, low quality of reclaimed rubber products, and increased pressure on production equipment, so as to avoid secondary pollution, stabilize product performance, and reduce material temperature.

Inactive Publication Date: 2012-02-01
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

[0013] The method of continuous desulfurization of rubber at atmospheric 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 includes the following steps:

[0014] The material is continuously fed into the desulfurization pipeline through the fluidized bed. The desulfurization pipeline is divided into five equidistant sections, each section is 15m long. Each section of the desulfurization pipeline is heated by external electromagnetic induction. The temperature of each section of the pipeline is the same, but there are temperature differences between the pipelines. According to the flow direction of the material, the temperature of the first section of the pipeline is 280°C, the second section is 270°C, the third section is 260°C, the fourth section is 250°C, and the fifth section is 240°C. The inside of the desulfurization pipeline is at normal pr...

Embodiment 2

[0016] The method of continuous desulfurization of rubber at atmospheric 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 includes the following steps:

[0017] The material is continuously fed into the desulfurization pipeline through the fluidized bed. The desulfurization pipeline is divided into five equidistant sections, each section is 17m long. Each section of the desulfurization pipeline is heated by external electromagnetic induction. The temperature of each section of the pipeline is the same, but there are temperature differences between the pipelines. According to the flow direction of the material, the temperature of the first section of the pipeline is 280°C, the second section is 270°C, the third section is 260°C, the fourth section is 250°C, and the fifth section is 240°C. The inside of the desulfurization pipeline is at normal pr...

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Abstract

The invention provides a method for the normal pressure continuous desulfurization of rubber, which comprises the steps of: crushing rubber, then adding softening agent and activating agent into the crushed rubber power, evenly mixing the agents with the rubber powder, and desulfurizing the evenly mixed material, wherein the desulfurization comprises the following step that: the material is continuously fed, via a fluidized bed, into a desulfurization pipeline which is equidistantly divided into five sections with each being externally heated, temperature of the five sections of the pipeline is the same, but temperature difference between the sections of the pipeline is present, the heating temperature of the sections of the pipeline in descending order is from 280 DEG C to 240 DEG C in the flowing direction of the material, the interior of the desulfurization pipeline is at normal pressure, the length of each section of the desulfurization pipeline is from 14 to 17 meters, and the flowing time of the material in the entire desulfurization pipeline is from 15 to 20 minutes. The method for the normal pressure continuous desulfurization of rubber according to the invention has the advantages of: good safety, environmental protection, energy saving, stable product performance and high efficiency.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/10
CPCY02W30/62
Inventor 肖官禄
Owner 都江堰市新时代工贸有限公司
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