| abstract |
Trans-1233zd, the trans-isomer of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) can be used as blowing agents, solvents, cleaning agents, as well as monomers of macromolecule compounds, and can be prepared through the dehydrochlorination of 1,1,1-trifluoro-3,3-dichloropropane (HCFC-243fa) with the help of a catalyst. The present invention is directed to an integrated process is proposed to produce trans-1233zd from 243fa, which is consisted of the following four major unit operations: (1) Catalytic dehydrochlorination of 243fa into trans/cis-1233zd, (2) HCl recovery, (3) Catalytic isomerization of cis-1233zd into trans-1233zzd, and (4) Isolation of trans-1233zd. |