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Title:
１、１－ジフルオロエタンと塩化ビニルを同時に生産する方法
Document Type and Number:
Japanese Patent JP7332724
Kind Code:
B2
Abstract:
The present invention provides a method for the co-production of 1,1-difluoroethane and vinyl chloride, including: (a) vaporizing dichloroethane and hydrogen fluoride, and delivering the vaporized dichloroethane and hydrogen fluoride into a reactor for a catalytic reaction under the action of a catalyst to obtain a reaction product; (b) delivering the reaction product into a first rectifying tower for separation to obtain an overhead product from the first rectifying tower and a bottom product from the first rectifying tower; (c) delivering the overhead product from the first rectifying tower into a second rectifying tower for separation to obtain hydrogen chloride and a bottom product from the second rectifying tower; (d) delivering the bottom product from the second rectifying tower into a purifying tower for purification to obtain an overhead product from the purifying tower; (e) simultaneously delivering the overhead product from the purifying tower and a saturated organic solvent into a third rectifying tower for separation to obtain a 1,1-difluoroethane product and a bottom product from the third rectifying tower; and (f) delivering the bottom product from the third rectifying tower into a fourth rectifying tower for separation to obtain a vinyl chloride product and a bottom stream from the fourth rectifying tower. The present invention has the advantages of simple process, high conversion rate, and good product quality.

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Inventors:
Yu Huimei
Hong Jiang Yong
Yang wave
Zhao Yang
Zhang Hiko
Lin Hui Lee
Abun Ren
Application Number:
JP2021572670A
Publication Date:
August 23, 2023
Filing Date:
June 25, 2021
Export Citation:
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Assignee:
ZHEJIANG QUHUA FLUOR-CHEMISTRY CO LTD
International Classes:
C07C17/20; C07C17/25; C07C17/383; C07C17/389; C07C19/08; C07C21/06
Domestic Patent References:
JP7278024A
JP2001505874A
JP2004209431A
JP2005206584A
Attorney, Agent or Firm:
Patent Attorney Corporation Cosmos International Patent and Trademark Office



 
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