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Process for producing vinyl chloride by acetylene method and dedicated device for realizing same

A technology of vinyl chloride and acetylene method, applied in hydrogen halide addition preparation, organic chemistry and other directions, can solve the problems of ethylene raw material price increase, production and development restrictions, etc., to achieve high production intensity, large production capacity, and improved reaction speed. Effect

Inactive Publication Date: 2006-12-27
刘大军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the sharp increase in oil prices in recent years and the high prices, the price of ethylene raw materials has increased, and production and development have been restricted.

Method used

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  • Process for producing vinyl chloride by acetylene method and dedicated device for realizing same
  • Process for producing vinyl chloride by acetylene method and dedicated device for realizing same
  • Process for producing vinyl chloride by acetylene method and dedicated device for realizing same

Examples

Experimental program
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Effect test

Embodiment 1

[0069] like figure 1 , figure 2 A new method for the production of vinyl chloride by an acetylene process, comprising the following steps:

[0070] (1) prepare raw material acetylene and hydrogen chloride respectively;

[0071] The acetylene is cleaned and neutralized to deal with the impurities in the acetylene. After boosting the pressure to 107KPa, the acetylene is cooled to 2-5°C through a tube-and-tube heat exchanger using Freon as the refrigerant, and a large amount of moisture entrained in the acetylene gas is removed at a low temperature. , and then enter the carbon steel drier filled with aluminosilicate molecular sieve, through the adsorption of moisture by the molecular sieve, the moisture content of acetylene gas is extremely low, reaching below 10ppm;

[0072] Hydrogen chloride is produced by the known hydrochloric acid desorption method, the purity is higher than 99.95% and does not contain free chlorine, and the water contained in hydrogen chloride is removed...

Embodiment 2

[0094] Such as figure 1 , figure 2 Process flow sheet and reactor of the present invention, with embodiment 1, difference is:

[0095] Described step (1): for preparing acetylene and hydrogen chloride respectively: the acetylene gas is compressed and dried at a low temperature so that the moisture content of the acetylene gas reaches below 10 ppm; hydrogen chloride without free chlorine is adopted, and sulfuric acid is used as a circulation fluid to remove moisture to make the hydrogen chloride The water content is below 10ppm;

[0096] Said step (2): said acetylene and hydrogen chloride are mixed in a volume ratio of 1: 1.02; the crude vinyl chloride gas is cooled to 45°C; said first-stage reactor pressure is 80KPa (G), and said second-stage reactor The pressure is 270KPa(G).

[0097] Said step (3): the temperature of the stripper tower kettle is 32°C, the tower top temperature is 0°C, and the pressure is 312KPa (G);

[0098] The temperature at the bottom of the rectific...

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Abstract

The invention discloses a new method of chloroethylene through acetylene method and specific equipment, which comprises the following steps: disposing raw material gas strictly; reacting two-segment compensation; recycling heptane; cooling; radiating; providing specific catalyst and reactor to synthesize chloroethylene; disposing effluent with mercury to obtain high-purity chloroethylene monomer.

Description

technical field [0001] The invention relates to a production method of vinyl chloride, in particular to a new method for producing vinyl chloride by acetylene method and special equipment for realizing the method. Background technique [0002] Vinyl chloride is a colorless gas that is slightly soluble in water and is twice as heavy as air at room temperature, with an anesthetic aroma. Its molecular formula is C 2 h 3 Cl has a molecular weight of 62.5, a boiling point of -13.9°C, a critical temperature of 142°C, and a critical pressure of 5.22 MPa (52.22 atmospheres), so it can be slightly pressurized to obtain liquid vinyl chloride. It was first discovered by the French chemist Reqnauk in 1835. Because it is the main raw material for the production of polyvinyl chloride, that is, polyvinyl chloride is polymerized from vinyl chloride. Therefore, with the rapid development of polyvinyl chloride production, it has developed rapidly. According to statistics, the production c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C21/06C07C17/08
Inventor 刘大军
Owner 刘大军
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