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Fluidized bed reactor for the preparation of chlorosulfonated polyethylene by gas-solid method

A fluidized bed reactor, chlorosulfonated polyethylene technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as difficult light irradiation in areas, prevent sedimentation, eliminate dead zones, and strengthen mass transfer. Effect

Inactive Publication Date: 2014-10-22
刘文潮 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ultraviolet lamp of the device is set on the top of the reactor, and it is difficult to irradiate the area under the fluidized material with sufficient light

Method used

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  • Fluidized bed reactor for the preparation of chlorosulfonated polyethylene by gas-solid method
  • Fluidized bed reactor for the preparation of chlorosulfonated polyethylene by gas-solid method
  • Fluidized bed reactor for the preparation of chlorosulfonated polyethylene by gas-solid method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] Select 100 kg of chlorinated polyethylene with a water content of less than 0.4% (mass), and feed it into the main body 1 of the fluidized bed reactor with a cylinder diameter of 500 mm through the feeding port of the fluidized bed reactor. Start the fan and use the purified air as the circulating gas. Adjust the gas flow rate, and test the particle concentration of different bed heights by the particle concentration measuring instrument; the experiment runs continuously for 2 hours; the bed height of the fluidized bed is about 1.7 meters, and the fluidization state of the particle bed is good; the particle concentration measuring instrument shows that at 0.2 For a bed height of -1 meter, the radial particle concentration distribution is 0.25-0.35, and it is in a gentle distribution state.

[0028] In the fluidized state, the material is discharged from the discharge port, weighed, and all the materials are released. No adhering material was found on the wall of the re...

example 2

[0030] Select 100 kg of chlorinated polyethylene with a water content of less than 0.4%, and feed it into the main body 1 of the fluidized bed reactor with a cylinder diameter of 500 mm through the feeding port of the fluidized bed reactor. Start the fan and use the purified air as the circulating gas. And turn on the preheater to preheat the gas to 40-45°C. Adjust the gas flow rate, and test the particle concentration of different bed heights through the particle concentration measuring instrument; the experiment runs continuously for 2 hours. The bed height of the fluidized bed is about 1.7 meters, and the fluidization state of the particle bed is good; At a bed height of 1 meter, the radial particle concentration distribution is 0.25-0.35, and it is in a gentle distribution state.

[0031] In the fluidized state, the material is discharged from the discharge port, weighed, and all the materials are released. No adhering material was found on the wall of the reactor; the o...

example 3

[0033]Select 100 kg of chlorinated polyethylene with a water content of less than 0.4%, and feed it into the main body 1 of the fluidized bed reactor with a cylinder diameter of 500 mm through the feeding port of the fluidized bed reactor. Start the blower and feed in a premixed mixture of chlorine, sulfur dioxide and nitrogen in a certain proportion. And turn on the ultraviolet lamp, the chlorinated polyethylene material and the mixed reaction gas are reacted in a fluidized state; the reaction time is about 1 hour. The bed height of the fluidized bed is about 1.5~1.7 meters, and the fluidized state of the particle bed is good; the temperature in the reactor gradually rises from room temperature to 47°C; after the reaction, exhaust and introduce air purification treatment.

[0034] In the fluidized state, discharge and weigh from the discharge port, and almost all the reaction products are discharged. No black impurities were found in the material. No adhering material was f...

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Abstract

The invention relates to a fluidized bed reactor for preparing chlorosulfonated polyethylene by a gas-solid method. The fluidized bed reactor comprises a main body of the fluidized bed reactor, wherein the main body of the fluidized bed reactor comprises a straight tube section and a reactor expansion section; the top end of the straight tube section is connected with the bottom end of the reactor expansion section; the inner diameter of the reactor expansion section is larger than that of the straight tube section; a gas premixing chamber is formed at the bottom of the main body of the fluidized bed reactor; a predistribution device is arranged at the bottom of the inner wall of the gas premixing chamber; a plurality of layers of gas distribution plates are arranged between the gas premixing chamber and the main body of the fluidized bed reactor; an ultraviolet lamp glass tube stack formed by annularly arranging a plurality of glass tubes is arranged in the center of the straight tube section, or a plurality of holes are equidistantly and radially formed in the inner wall of the straight tube section along the circumference; and the glass tubes are arranged in the holes. The fluidized bed reactor has the advantages of effectively preventing particles close to the wall surface from being adhered on the wall surface or settled; eliminating dead zones of the whole fluidized bed layer; making reactions more uniform because reaction materials in the bed layer are sufficiently irradiated by ultraviolet.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a fluidized bed reactor for preparing chlorosulfonated polyethylene by a gas-solid method. Background technique [0002] Chlorosulfonated polyethylene is an elastomer modified by replacing high-density polyethylene with chlorine and adding a small amount of sulfonyl groups. It has good coloring, oil resistance, heat resistance, oxidation resistance, weather resistance, corrosion resistance, flame retardancy and wear resistance, and has a wide range of uses. It has been widely used in wire and cable, waterproof membrane, automobile industry and other fields, and has become a commonly used special rubber. [0003] The gas-solid method is a new chlorosulfonated polyethylene production process developed in recent years. Compared with the traditional solvent dilution process, this method is more environmentally friendly and has low energy consumption. At the same time, due to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24C08F10/02C08F8/38
Inventor 舒纪恩
Owner 刘文潮
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