Disclosed is a process for the manufacture of HFO-1234yf from TCP in three integrated steps that include hydrofluorination of TCP (tetrachloropropene) to HCFC-1233xf in the vapor phase followed by hydrofluorination of HCFC-1233xf to HCFC-244bb in the liquid phase which is then followed by dehydrochlorination in liquid or vapor phase to produce HFO-1234yf. The vapor phase hydrofluorination is carried out at a higher pressure than the liquid phase hydrofluorination, thereby eliminating the need for compression and/or intermediate recovery. Also, any HCl generated from this reaction is fed to the liquid phase hydrofluorination section to promote agitation and mixing. This results in a more economical process from an initial capital and operating cost versus conducting the 3-steps sequentially.
申请公布号
WO2011056441(A2)
申请公布日期
2011.05.12
申请号
WO2010US53486
申请日期
2010.10.21
申请人
HONEYWELL INTERNATIONAL INC.;KOPKALLI, HALUK;CHIU, YUON;COTTRELL, STEPHEN, A.;TUNG, HSUEH SUNG;ULRICH, KEVIN D.
发明人
KOPKALLI, HALUK;CHIU, YUON;COTTRELL, STEPHEN, A.;TUNG, HSUEH SUNG;ULRICH, KEVIN D.