SINGLE STAGE PROCESS FOR PRODUCING HYDROFLUOROCARBONS FROM PERCHLOROETHYLEN from perchlorethylene

摘要

One by reacting the hydrogen in step in the presence fluorination catalyst perchlorethylene and fluoro in the container or more _{CHCIFCF 3 (HCFC-124),} CHF 2 CCIF 2 (HCFC-124a) and CHF ₂ CF ₃ (HFC-125 ). / RTI These compounds are useful in a variety of industrial applications, including foaming agents, refrigerants, sterilization gases, and solvent applications. By distilling the reaction product _{HCl, CHClFCF 3, CHF 2 CClF} 2 and CHF ₂ CF ₃ and distilled water is generated, and comprising a small amount of HF is distilled water, is washed to remove the acid. The bottom product contains perchlorethylene, hydrogen fluoride and organic by-products which are phase separated to isolate hydrogen fluoride from the mixture of perchlorethylene and organic by-products. The mixture of hydrogen fluoride and perchlorethylene and the organic byproduct is then mixed again at a controlled rate and recycled to the reaction vessel.