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    • 74. 发明授权
    • Processes for reducing the amount of monofluoroacetate in hydrofluoroolefin production
    • 减少氢氟烯烃生产中一氟乙酸盐的用量的方法
    • US08853472B2
    • 2014-10-07
    • US13318557
    • 2010-05-07
    • Mario Joseph NappaPatricia CheungKarl R. KrauseMichael A. Sisk
    • Mario Joseph NappaPatricia CheungKarl R. KrauseMichael A. Sisk
    • C07C17/38C07C17/25
    • C07C17/25C07C21/18
    • A process is disclosed for reducing the amount of monofluoroacetate. The process involves (a) contacting a hydrofluorocarbon with a reactant basic aqueous solution to produce an organic phase solution containing a hydrofluoroolefin and an aqueous phase solution containing a monofluoroacetate; and (b) heating the aqueous phase solution to an effective temperature to reduce the amount of monofluoroacetate in the aqueous phase solution, wherein fluoride concentration in the aqueous phase solution is substantially high. Another process is disclosed for reducing the amount of monofluoroacetate. The process involves (a) contacting a first batch of hydrofluorocarbon with a first batch of reactant basic aqueous solution to produce a first batch of organic phase solution containing a hydrofluoroolefin and a first batch of aqueous phase solution containing a monofluoroacetate; (b) separating the first batch of organic phase solution from the first batch of aqueous phase solution; (c) mixing a second batch of hydrofluorocarbon and a second batch of reactant basic aqueous solution with the separated first batch of organic phase solution to produce a second batch of organic phase solution containing a hydrofluoroolefin and a second batch of aqueous phase solution containing a monofluoroacetate; (d) combining the first batch of aqueous phase solution with the second batch of aqueous phase solution; and (e) heating the combined aqueous phase solutions to an effective temperature to reduce the amount of monofluoroacetate in the combined aqueous phase solutions, wherein fluoride concentration in the combined aqueous phase solutions is substantially high.
    • 公开了一种减少一氟乙酸盐的量的方法。 该方法包括(a)使氢氟烃与反应性碱性水溶液接触以产生含有氢氟烯烃和含有一氟乙酸盐的水相溶液的有机相溶液; 和(b)将水相溶液加热到有效温度以降低水相溶液中的一氟乙酸盐的量,其中水相溶液中的氟化物浓度基本上高。 公开了用于减少一氟乙酸盐的量的另一种方法。 该方法包括(a)使第一批氢氟烃与第一批反应性碱性水溶液接触,以产生含有氢氟烯烃和含有一氟乙酸盐的第一批含水相溶液的第一批有机相溶液; (b)从第一批水相溶液中分离出第一批有机相溶液; (c)将第二批氢氟烃和第二批反应性碱性水溶液与分离的第一批有机相溶液混合以产生含有氢氟烯烃的第二批有机相溶液和含有一氟乙酸盐的第二批含水相溶液 ; (d)将第一批水相溶液与第二批水相溶液组合; 和(e)将组合的水相溶液加热到有效温度以减少组合的水相溶液中的一氟乙酸盐的量,其中组合的水相溶液中的氟化物浓度基本上高。