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Method and apparatus for preparing vinyl chloride using ethane and 1,2-dichloroethane

A technology of ethylene dichloride and vinyl chloride, applied in chemical instruments and methods, preparation of halogenated hydrocarbons, preparation of halogen addition, etc., to achieve the effect of suppressing the generation of coke and increasing the reaction yield

Active Publication Date: 2009-01-28
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method and equipment for producing vinyl chloride, which improves the yield of the reaction and can solve the problems caused by coke generated during the reaction

Method used

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  • Method and apparatus for preparing vinyl chloride using ethane and 1,2-dichloroethane
  • Method and apparatus for preparing vinyl chloride using ethane and 1,2-dichloroethane
  • Method and apparatus for preparing vinyl chloride using ethane and 1,2-dichloroethane

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Embodiment 1

[0049]

[0050] use for figure 1 React with the device shown in . An Incolloy reactor with an outer diameter of 1 inch and a length of 4 m was employed in the ethane chlorination reaction zone of the pyrolysis reactor. An Incolloy reactor with an outer diameter of 1 inch and a length of 3 m was used in the pyrolysis reaction zone of the pyrolysis reactor.

[0051] In this pyrolysis reactor, a pyrolysis reaction was performed by injecting ethane and chlorine into the lower part of the pyrolysis reactor, and then injecting 1,2-dichloroethane from a distance of 4 m from the lower part of the pyrolysis reactor.

[0052] The reaction of chlorine and ethane is carried out in the ethane chlorination reaction zone arranged at the lower part of the pyrolysis reactor, and the reaction is carried out at a chlorine / ethane molar ratio of 1.0, a reaction temperature of 600°C, and a reaction pressure of 1.0 atm and a dwell time of 6.0 seconds was performed. All the products in the etha...

Embodiment 2

[0063]

[0064] use as figure 2 The reaction was performed using the equipment shown in . An Incolloy reactor with an outer diameter of 1 inch and a length of 60 cm was used in the ethane chlorination reaction zone of the pyrolysis reactor. The reaction was carried out at a reaction temperature of 550° C., a reaction pressure of 1.0 atm, a residence time of 8 seconds, and a molar ratio of ethane / chlorine of 0.75. All the products in the ethane chlorination reaction zone are moved to the pyrolysis reaction zone, and then undergo additional pyrolysis reaction together with 1,2-dichloroethane. An Incolloy reactor with an outer diameter of 1 / 2 inch and a length of 90 cm was used in the pyrolysis reaction zone of the pyrolysis reactor. The pyrolysis reaction was carried out at a reaction temperature of 500° C. with a residence time of 2.5 seconds and included the product of the ethane chlorination reaction zone (Zone A) of the pyrolysis reactor.

[0065] The temperature of th...

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Abstract

Provided are a method of preparing vinyl chloride including: supplying chlorine gas and ethane to an ethane chlorination reaction region disposed in a lower portion of a pyrolysis reactor in which solid particles exist; performing an ethane chlorination reaction by contacting the chlorine gas and ethane with solid particles such that a product of the ethane chlorination reaction and the solid particles rise toward an upper portion of the pyrolysis reactor at the same time, and depositing coke produced during the ethane chlorination reaction on the solid particles; supplying 1,2-dichloroethane to a pyrolysis reaction region disposed in an upper portion of the pyrolysis reactor; ; performing a pyrolysis reaction in the pyrolysis reaction region by contacting a product of the ethane chlorination reaction and 1,2-dichloroethane with the solid particles such that the product of the ethane chlorination reaction , the 1,2-dichloroethane and the solid particles rise up at the same time, and depositing coke produced during the pyrolysis reaction on the solid particles; regenerating the solid particles by burning coke deposited on the solid particles in a regeneration reactor; and resupplying the solid particles that collect heat generated by burning coke to the pyrolysis reactor, and an apparatus for preparing the same. When vinyl chloride monomer is prepared using the above-described method, yield is improved, and coke production is inhibited.

Description

technical field [0001] The present invention relates to a method and equipment for preparing vinyl chloride by utilizing the chlorination reaction of ethane and the pyrolysis reaction of 1,2-dichloroethane, wherein the two-step method can be completed: reaction and regeneration. When the method according to the present invention is used to prepare vinyl chloride monomer, the reaction yield is improved and the problem caused by coke generated during the reaction can be solved. Background technique [0002] Disclosed in US Pat. Nos. 5,097,083, 5,705,728, etc. are methods for producing ethylene and vinyl chloride by injecting ethane and chlorine gas into a high-temperature tubular reactor using chlorine gas as a catalyst. [0003] However, the conventional method of producing vinyl chloride requires additional steps whereby the ethylene produced together with vinyl chloride is separated by the pyrolysis reaction of ethane, the separated ethylene is converted to 1,2-dichloroetha...

Claims

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Application Information

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IPC IPC(8): C07C17/02
CPCB01J8/0055B01J8/1827B01J8/24B01J8/26B01J2208/00176B01J2208/00203C07C17/10C07C17/25C07C21/06
Inventor 金圣原曹东铉金睿训金柱烈李顺烈吴秉哲河丞柏南基文尹珠永吴相丞裴钟昱
Owner LG CHEM LTD
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