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公开(公告)号:US5898088A
公开(公告)日:1999-04-27
申请号:US663068
申请日:1996-06-14
IPC分类号: C07C17/10 , C07C17/20 , C07C17/21 , C07C17/383 , C07C19/08 , B01J27/06 , C07C17/093
CPC分类号: C07C17/21 , C07C17/10 , C07C17/206 , C07C17/383
摘要: A process for the production of pentafluoroethane which comprises the steps (i) producing a composition comprising a compound of formula C.sub.2 HCl.sub.x F.sub.y in which x=1, 2 or 3 and y=2, 3 or 4 provided that x+y is 5, contaminated with a compound of formula C.sub.2 Cl.sub.x+1 F.sub.y, (ii) separating the compound of formula C.sub.2 HCl.sub.x F.sub.y from the compound of formula C.sub.2 Cl.sub.x+1 F.sub.y and (iii) contacting the compound of formula C.sub.2 HCl.sub.x F.sub.y with hydrogen fluoride in the presence of a fluorination catalyst whereby to produce pentafluoroethane.
摘要翻译: PCT No.PCT / GB94 / 02677 Sec。 371日期1996年6月14日第 102(e)1996年6月14日PCT 1994年12月7日PCT PCT。 公开号WO95 / 16654 日期:1995年6月22日制备五氟乙烷的方法,其包括步骤(i)制备包含其中x = 1,2或3和y = 2,3或4的式C2HClxFy化合物的组合物,条件是x + y 为5,受到式C2Clx + 1Fy的化合物的污染,(ii)将式C2HClxFy的化合物与式C2Clx + 1Fy的化合物分离,和(iii)在氟化催化剂存在下使式C2HClxFy的化合物与氟化氢接触 从而制备五氟乙烷。
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公开(公告)号:US6127586A
公开(公告)日:2000-10-03
申请号:US244716
申请日:1999-02-04
IPC分类号: C07C17/10 , C07C17/20 , C07C17/21 , C07C17/383 , C07C19/08 , B01J27/06 , C07C17/093
CPC分类号: C07C17/21 , C07C17/10 , C07C17/206 , C07C17/383
摘要: A process for the production of pentafluoroethane which comprises the steps (i) producing a composition comprising a compound of formula C.sub.2 HCl.sub.x F.sub.y in which x=1,2 or 3 and y=2,3 or 4 provided that x+y is 5, contaminated with a compound of formula C.sub.2 Cl.sub.x+1 F.sub.y, (ii) separating the compound of formula C.sub.2 HCl.sub.x F.sub.y from the compound of formula C.sub.2 Cl.sub.x+1 F.sub.y, and (iii) contacting the compound of formula C.sub.2 HCl.sub.x F.sub.y with hydrogen fluoride in the presence of a fluorination catalyst to produce pentafluoroethane is disclosed.
摘要翻译: 一种生产五氟乙烷的方法,其包括步骤(i)制备包含式C2HClxFy化合物的组合物,其中x = 1,2或3和y = 2,3或4,条件是x + y为5,被 式C2Clx + 1Fy的化合物,(ii)将式C2HClxFy的化合物与式C2Clx + 1Fy的化合物分离,和(iii)在氟化催化剂的存在下使式C2HClxFy的化合物与氟化氢接触以产生五氟乙烷是 披露
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公开(公告)号:US06270742B1
公开(公告)日:2001-08-07
申请号:US09051508
申请日:1998-04-08
IPC分类号: C01B719
CPC分类号: C01B7/195
摘要: A process for separating and recovering hydrogen fluoride from a mixture with an organic compound especially a fluorine-containing compound by extraction with a solution of an alkali metal fluoride in hydrogen fluoride, phase separation and recovery. A process for producing a fluorine-containing organic compound by fluorinating a starting material with hydrogen fluoride and similarly recovering hydrogen fluoride from the product stream. The solution may be anhydrous or aqueous.
摘要翻译: 通过用氟化氢中的碱金属氟化物溶液萃取,相分离和回收,从有机化合物,特别是含氟化合物的混合物中分离和回收氟化氢的方法。 通过用氟化氢氟化起始原料并类似地从产物流中回收氟化氢来制备含氟有机化合物的方法。 溶液可以是无水或含水的。
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公开(公告)号:US5962753A
公开(公告)日:1999-10-05
申请号:US793169
申请日:1997-02-18
CPC分类号: C07C17/21
摘要: Process for the manufacture of pentafluoroethane �HFC 125! by reaction of perchloroethylene with hydrogen fluoride in the vapor phase over a fluorination catalyst in a fluorination reactor with recycle of dichlorotrifluoroethane �HCFC 123! and chlorotetrafluoroethane �HCFC 124! to the fluorination reactor, wherein tetrafluoroethane �HFC 134a! is also recycled to the fluorination reactor. The tetrafluoroethane and the chlorotetrafluoroethane can both be separated from the product stream in a single distillation column and recycled, together to the fluorination reactor.
摘要翻译: PCT No.PCT / GB95 / 01872 Sec。 371日期1997年2月18日 102(e)日期1997年2月18日PCT提交1995年8月8日PCT公布。 出版物WO96 / 06062 日本1996年2月29日在氟化反应器中,通过氟化反应器中的二氯三氟乙烷[HCFC 123]和氯四氟乙烷[HCFC 124]的再循环,使全氯乙烯与氟化氢在气相中通过氟化催化剂反应制备五氟乙烷[HFC 125] 氟化反应器,其中四氟乙烷[HFC 134a]也被循环到氟化反应器中。 四氟乙烷和氯四氟乙烷都可以在单个蒸馏塔中与产物流分离,并一起再循环到氟化反应器中。
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公开(公告)号:US06660893B2
公开(公告)日:2003-12-09
申请号:US09874786
申请日:2001-06-05
IPC分类号: C07C1707
CPC分类号: C01B7/195
摘要: A process for separating and recovering hydrogen fluoride from a mixture with an organic compound especially a fluorine-containing compound by extraction with a solution of an alkali metal fluoride in hydrogen fluoride, phase separation and recovery. A process for producing a fluorine-containing organic compound by fluorinating a starting material with hydrogen fluoride and similarly recovering hydrogen fluoride from the product stream. The solution may be anhydrous or aqueous.
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公开(公告)号:US06555086B2
公开(公告)日:2003-04-29
申请号:US09402681
申请日:1999-10-07
IPC分类号: C01B719
CPC分类号: C07C17/38 , C01B7/195 , C07C17/093 , C07C17/206 , C07C17/21 , C07C19/08
摘要: Processes for separating and recovering hydrogen fluoride from a gaseous mixture of an organic compound and hydrogen fluoride are disclosed. The processes include contacting the gaseous mixture with a solution of an alkali metal fluoride in hydrogen fluoride, separating a gas phase depleted in hydrogen fluoride and containing the organic compound from a liquid phase, and recovering hydrogen fluoride from the liquid phase.
摘要翻译: 公开了从有机化合物和氟化氢的气体混合物中分离和回收氟化氢的方法。 该方法包括使气体混合物与氟化氢中的碱金属氟化物的溶液接触,从氟化氢中分离出氟化氢中含有的含有有机化合物的气相,从液相中回收氟化氢。
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公开(公告)号:US5902913A
公开(公告)日:1999-05-11
申请号:US796902
申请日:1997-02-06
IPC分类号: B01J27/138 , C07B61/00 , C07C17/20 , C07C17/21 , C07C17/358 , C07C19/08 , C07C19/10 , C07C17/08
CPC分类号: C07C19/08 , C07C17/206 , C07C17/21 , C07C17/358
摘要: A process for the co-production of two or more hydrofluoroalkanes which comprises contacting an alkene or a halogenated alkane with hydrogen fluoride at elevated temperature in the presence of a fluorination catalyst to produce a first hydrofluoroalkane and wherein an organic precursor to a second hydrofluoroalkane is provided in the process whereby to produce a second hydrofluoroalkane in addition to the first hydrofluoroalkane. In particularly preferred embodiments of the process, the first hydrofluoroalkane is 1,1,1,2-tetrafluoroethane derived from 1-chloro-2,2,2-trifluoroethane or trichloroethylene and the second hydrofluoroalkane is one or more of pentafluoroethane, difluoromethane and 1,1,2,2-tetrafluoroethane.
摘要翻译: 共同生产两种或更多种氢氟烷烃的方法,其包括使烯烃或卤代烷烃与氟化氢在氟化催化剂存在下在升高的温度下接触以产生第一氢氟烷烃,并且其中提供第二氢氟烷烃的有机前体 在除了第一氢氟烷烃之外还生产第二氢氟烷烃的方法中。 在该方法的特别优选的实施方案中,第一氢氟烷烃是衍生自1-氯-2,2,2-三氟乙烷或三氯乙烯的1,1,1,2-四氟乙烷,第二氢氟烷烃是五氟乙烷,二氟甲烷和1 ,1,2,2-四氟乙烷。
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公开(公告)号:US06340781B1
公开(公告)日:2002-01-22
申请号:US08374669
申请日:1995-04-03
IPC分类号: C07C17395
CPC分类号: C07C17/395 , C07C19/08
摘要: A process for the removal of chloroalkane, chlorofluoroalkane and/or hydrofluoroalkane impurities from pentafluoroethane which comprises contacting the impure pentafluoroethane with hydrogen at elevated temperature in the presence of a hydrogenation catalyst to convert the impurity or impurities to a hydrofluoroalkane and/or a hydrocarbon and separating the resulting hydrofluoroalkane and/or hydrocarbon from the pentafluoroethane.
摘要翻译: 一种从五氟乙烷中除去氯代烷烃,氯氟烷烃和/或氢氟烷烃杂质的方法,该方法包括使不纯的五氟乙烷与氢在升高的温度下在氢化催化剂存在下接触以将杂质或杂质转化成氢氟烷烃和/或烃 得到的氢氟烷烃和/或五氟乙烷的烃。
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公开(公告)号:US6107529A
公开(公告)日:2000-08-22
申请号:US972000
申请日:1997-11-19
申请人: Charles John Shields
发明人: Charles John Shields
IPC分类号: B01D15/00 , B01J20/18 , C07C17/389 , C07C19/08 , C07C17/38
CPC分类号: C07C17/389
摘要: A process for the removal of 1,1,2,2-tetrafluoroethane from 1,1,1,2-tetrafluoroethane which comprises contacting 1,1,1,2-tetrafluoroethane containing 1,1,2,2-tetrafluoroethane with a zeolite having a mean pore size in the range of 3.8 .ANG. an 4.8 .ANG.. The zeolite is preferably calcium chabazite.
摘要翻译: 一种从1,1,1,2-四氟乙烷除去1,1,2,2-四氟乙烷的方法,该方法包括使含有1,1,2,2-四氟乙烷的1,1,1,2-四氟乙烷与沸石 平均孔径在3.8安格斯4.8的范围内。 沸石优选为钙菱沸石。
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