Catalytic gas phase fluorination

摘要

The invention relates to a fluorination process, alternately comprising reaction stages and regeneration stages, wherein the reaction stages comprise reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, and the regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow.

主权项

1. A fluorination process, comprising a preliminary activation stage which comprises contacting a fluorination catalyst with an oxidizing agent-containing gas flow that does not contain hydrogen fluoride, alternately comprising reaction stages and regeneration stages, wherein the reaction stages comprise reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, and the regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow, wherein the alternation between the reaction stages and regeneration stages is regulated in a pre-determined, fixed manner, and wherein the preliminary activation stage, the reaction stages and the regeneration stages take place in a single reactor.