Patent ID: 9334207
Filing Date: 2016-05-10
CPC Classification: C01B,C07C,Y02P

Claim Text:
1. A process to co-produce three products, (E)1-chloro-3,3,3-trifluoropropene (1233zd(E)), (E)1,3,3,3-tetrafluoropropene (1234ze(E)), and 1,1,1,3,3-pentafluoro-propane (245fa) starting from 1,1,1-3,3-pentachloropropane (HCC-240fa) comprising the steps of: (a) in a first reactor, conducting the fluorination of HCC-240fa with HF and a fluorinated TiCl (b) in a second reactor, conducting the fluorination of a portion of the 1233zd(E) formed in step (a) to produce 1,1,1,3,3-pentafluoropropane (245fa) and isolating a portion of the 245fa product; and (c) in a third reactor, conducting the dehydrofluorination of a portion of the 245fa formed in step (b) to produce (E)1,3,3,3-tetrafluoropropene (1234ze(E)) and isolating a portion of the 1234ze(E) product; wherein the HCFO-1233zd(E) product is produced in the first reactor with high selectivity, thereby avoiding the formation of an azeotropic composition consisting of HCFO-1233zd(E) and HFC-245fa; wherein the process includes the recycling of unreacted starting materials to maximize raw material utilization and product yields; wherein the process further includes the isolation of by-products of the reactions; and wherein by adjusting the distribution of the crude streams from the first and second fluorination reactors, different amounts of each product are generated during the process.