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    • 5. 发明申请
    • PROCESS FOR PURIFYING 1,1-DICHLORO-2,2,2-TRIFLUOROETHANE AND 1-CHLORO-1,2,2,2-TETRAFLUOROETHANE
    • 纯化1,1-二氯-2,2,2-三氟乙基和1 - 氯-1,2,2,2-四氢呋喃的方法
    • WO1995011875A1
    • 1995-05-04
    • PCT/US1994010988
    • 1994-09-29
    • ALLIEDSIGNAL INC.
    • ALLIEDSIGNAL INC.TUNG, Hsueh, Sung
    • C07C17/395
    • B01J23/26C07C17/395C07C19/12
    • The invention relates to a novel process for purifying HCFC-123 and HCFC-124 comprising: (a) reacting a fluorination reaction product comprising HCFC-123 and HCFC-123a and/or HCFC-124 and HCFC-124a wherein at least one of said HCFC-123a or HCFC-124a is present in an amount not less than 5 weight percent relative to HCFC-123 or HCFC-124 respectively in the product with anhydrous HF in the presence of a fluorination catalyst under conditions such that the amount of HCFC-123a and/or HCFC-124a relative to HCFC-123 and/or HCFC-124 respectively in the product is reduced to less than 5 weight percent. The pure product (i.e., HCFC-123 or HCFC-124) may be used in a variety of applications including solvent, refrigerant, sterilant gas and blowing agent applications.
    • 本发明涉及一种用于净化HCFC-123和HCFC-124的新方法,包括:(a)使包含HCFC-123和HCFC-123a和/或HCFC-124和HCFC-124a的氟化反应产物与至少一种所述 在氟化催化剂存在下,HCFC-123a或HCFC-124a的含量分别相对于HCFC-123或HCFC-124在无水HF中的含量为5重量% 123a和/或HCFC-124a相对于HCFC-123和/或HCFC-124分别降低到小于5重量%。 纯产品(即,HCFC-123或HCFC-124)可用于各种应用,包括溶剂,制冷剂,杀菌剂气体和发泡剂应用。
    • 6. 发明申请
    • PURIFICATION OF A COMPONENT OF A BINARY AZEOTROPE
    • 二烯类化合物的组分的纯化
    • WO1994019301A1
    • 1994-09-01
    • PCT/US1994001117
    • 1994-01-31
    • ALLIEDSIGNAL INC.
    • ALLIEDSIGNAL INC.CLEMMER, Paul, GeneTUNG, Hsueh, SungSMITH, Addison, Miles
    • C07C17/38
    • C07C17/383B01D3/14Y10S203/13C07C19/08
    • The invention generally relates to a process for the purification of a component of a binary azeotrope in which the composition of the azeotrope changes by about 10 mole percent with pressure comprising: a) subjecting a binary azeotrope to a distillation step in which most of one of the binary components is removed as distillate (distillate 1) with the bottoms (bottoms 1) enriched in the other component; b) subjecting distillate 1 to at least one additional distillation step conducted at a different pressure in which most of the component recovered as bottoms 1 is removed as distillate 2 with the bottoms 2 enriched in the component enriched in distillate 1; c) optionally repeating step (b) as many times as desired; and d) recovering the desired purified component. The invention is particularly useful in the purification of pentafluoroethane in a pentafluoroethane/chloropentafluoroethane azeotrope.
    • 本发明一般涉及纯化二元共沸物组分的方法,其中共沸物的组成随着压力而变化约10摩尔%,包括:a)使二元共沸物经受蒸馏步骤,其中大部分 将二元组分作为馏出物(馏出物1)除去富含其它组分的塔底物(塔底物1); b)使馏出物1进行至少一个额外的蒸馏步骤,该蒸馏步骤以不同的压力进行,其中作为塔底物1回收的大部分组分作为馏出物2被除去,富含富含馏分1的组分的塔底物2富集; c)任选地重复步骤(b)多次; 和d)回收所需的纯化组分。 本发明特别可用于五氟乙烷/氯五氟乙烷共沸物中五氟乙烷的提纯。