PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

摘要

The present invention relates, in part, to the discovery that the presence of impurities in a reactor for dehydrochlorinating HCFC-244bb to HFO-1234yf results in selectivity changeover from HFO-1234yf to HCFO-1233xf. By substantially removing such impurities, it is shown that the selectivity to HFO-1234yf via dehydrochlorination of HCFC-244bb is improved.

主权项

1. A process for removing impurities from a reactor comprising an inner metal alloy surface such that the reactor is substantially free of impurities comprising the steps of:
(a) purging the reactor with an inert gas; (b) optionally, oxidizing the impurities in the reactor by introducing an oxidizing agent into the reactor under conditions effective to oxidize the impurities; (c) reducing the impurities in the reactor by introducing a reducing agent into the reactor under conditions effective to reduce the impurities; (d) cooling the reactor to an ambient temperature while passing the reducing agent and/or inert gas through the reactor; and (e) maintaining a positive pressure in the reactor with the reducing agent and/or the inert gas.