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Azeotropic mixture of 1,1-difluoroethane and hydrogen fluoride and production process of 1,1-difluoroethane
Azeotropic mixture of 1,1-difluoroethane and hydrogen fluoride and production process of 1,1-difluoroethane
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机译:1,1-二氟乙烷与氟化氢的共沸混合物及1,1-二氟乙烷的生产工艺
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摘要
There is provided an azeotropic mixture of hydrogen fluoride (HF) and 1,1-difluoroethane (HFC152a). In addition, there is provided a process for the production of HFC152a having a step of more effectively recovering HF which does not contain HFC152a or HFC152a which does not contain HF in which step an azeotropic mixture is distilled off from a column top by subjecting a mixture containing HFC152a and HF, so that HF which does not contain HFC152a or HFC152a which does not contain HF is recovered from a column bottom.
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