公开(公告)号：US20170166501A1

公开(公告)日：2017-06-15

申请号：US15325895

申请日：2014-12-09

Applicant: CHANGSHU 3F FLUORINE CHEMICAL CO., LTD.

Inventor： Linxu SI ,  Pingzhong ZHANG ,  Hexiang GU

IPC: C07C21/18 ,  B01J31/12

CPC classification number: C07C21/18 ,  B01J31/12 ,  B01J31/121 ,  C07C17/23

Abstract: A process for preparing trifluorochloroethylene including: in a multi-tubular reactor, hydrogenation reacting 1,1,2-trifluoro-1,2,2-trichloroethane directly with a catalyst potassium zinc trihydride to obtain trifluorochloroethylene, wherein the catalytic reaction is performed at a temperature of 250-350° C. and a pressure of 0.7-1.0 MPa for 10-20 seconds. The conventional process in which zinc powder is used for dechlorination or hydrogen is used for dechlorination through hydrogenation with the action of a noble metal catalyst is avoided in the process disclosed herein. The present process substantially reduces the production cost of trifluorochloroethylene, and substantially increases the product yield, which can be up to 99% or more.