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    • 8. 发明授权
    • Method of making difluoromethane, 1,1,1-trifluoroethane and 1,1-difluoroethane
    • 制备二氟甲烷,1,1,1-三氟乙烷和1,1-二氟乙烷的方法
    • US07112708B2
    • 2006-09-26
    • US10816447
    • 2004-04-01
    • Daniel C MerkelHsuehsung TungIan Shankland
    • Daniel C MerkelHsuehsung TungIan Shankland
    • C07C17/20C07C17/21C07C17/93
    • B01J27/125B01J21/18B01J27/08B01J27/135B01J37/26C07C17/206C07C17/208C07C17/21C07C19/08Y02P20/582
    • A process for the production of difluoromethane (HFC-32), 1,1,1-trifluoroethane (HFC-143a) and 1,1-difluoroethane (HFC-152a). In the process the following steps are employed: (a) providing a reaction vessel, (b) providing in the reaction vessel activated carbon impregnated with a strong Lewis acid fluorination catalys selected from halides of As, Sb, Al, Tl, In, V, Nb, Ta, Ti, Zr and Hf, (c) activating the catalyst by passing through the activated carbon impregnated with a strong Lewis acid fluorination catalyst anhydrous hydrogen fluoride gas and chlorine gas, (d) contacting, in a vapor state in the reaction vessel containing the activated catalyst, hydrogen fluoride and one or more halogenated hydrocarbons selected from chlorofluoromethane, dichloromethane, 1,1,1-trichloroethane, vinyl chloride, 1,1-dichloroethylene, 1,2-dichloroethylene, 1,2-dichloroethane, and 1,1-dichloroethane for a time and at a temperature to produce a product stream comprising hydrofluorocarbon product(s) corresponding to the chlorinated hydrocarbon reactant(s), and one or more of hydrogen chloride, unreactacted chlorinated hydrocarbon reactant(s), under-fluorinated intermediates, and unreacted hydrogen fluoride, and (e) separating the hydrofluorocarbon product(s) from the product stream.
    • 制备二氟甲烷(HFC-32),1,1,1-三氟乙烷(HFC-143a)和1,1-二氟乙烷(HFC-152a)的方法。 在该过程中,采用以下步骤:(a)提供反应容器,(b)在反应容器中提供浸渍有选自As,Sb,Al,Tl,In,V ,Nb,Ta,Ti,Zr和Hf,(c)通过浸渍有强路易斯酸氟化催化剂的无水氟化氢气体和氯气的活性炭活化催化剂,(d)以蒸气状态在 含有活化催化剂的反应容器,氟化氢和一种或多种选自氯氟甲烷,二氯甲烷,1,1,1-三氯乙烷,氯乙烯,1,1-二氯乙烯,1,2-二氯乙烯,1,2-二氯乙烷, 和1,1-二氯乙烷在一段时间和在一个温度下产生包含对应于氯代烃反应物的氢氟烃产物的产物流,以及一种或多种氯化氢,未反应的氯代烃 反应物,非氟化中间体和未反应的氟化氢,和(e)从产物流中分离氢氟烃产物。
    • 9. 发明授权
    • 1,1,1,3,3,3-hexafluoropropane purification with photochlorination equipment
    • 用光氯化设备净化1,1,1,3,3,3-六氟丙烷
    • US07205444B1
    • 2007-04-17
    • US11271580
    • 2005-11-10
    • Yuon ChiuDavid C. MerkelHsuehsung Tung
    • Yuon ChiuDavid C. MerkelHsuehsung Tung
    • C07C17/38C07C19/08
    • C07C17/38C07C17/395C07C19/08
    • A continuous, vapor phase method for purifying a crude mixture of 1,1,1,3,3,3-hexafluoropropane and one or more unsaturated fluorocarbon compounds, the process comprising: a) providing a photochlorinator vessel comprising 1) a UV lamp unit comprising a UV lamp located in a transparent inner well, the transparent inner well being located within a transparent outer well, the outer well being provided with material for cooling walls of the inner and outer wells; the inner well and the outer well defining separate chambers isolated from each other; and 2) a reaction vessel into which the UV lamp unit has been inserted; b) introducing into the reaction vessel a gaseous mixture of Cl2 and a distillation inseparable mixture of 1,1,1,3,3,3-hexafluoropropane and one or more unsaturated fluorocarbon compounds; c) reacting, in the gaseous state and in the presence of UV light from the photochlorinator, the mixture with Cl2 with the distillation inseparable mixture of 1,1,1,3,3,3-hexafluoropropane and one or more unsaturated compounds to saturate unsaturated fluorocarbons into a reacted mixture, and d) separating a purified 1,1,1,3,3,3-hexafluoropropane product containing less than 1000 ppm, most preferably less than 100 ppm unsaturated fluorocarbons.
    • 一种用于纯化1,1,1,3,3,3-六氟丙烷和一种或多种不饱和碳氟化合物的粗混合物的连续气相法,该方法包括
    • 10. 发明申请
    • 1,1,1,3,3,3-HEXAFLUOROPROPANE PURIFICATION WITH PHOTOCHLORINATION EQUIPMENT
    • 1,1,1,3,3,3-HEXAFLORORROPANE用光电设备进行纯化
    • US20070102281A1
    • 2007-05-10
    • US11271580
    • 2005-11-10
    • Yuon ChiuDaniel MerkelHsuehsung Tung
    • Yuon ChiuDaniel MerkelHsuehsung Tung
    • C07C17/00
    • C07C17/38C07C17/395C07C19/08
    • A continuous, vapor phase method for purifying a crude mixture of 1,1,1,3,3,3-hexafluoropropane and one or more unsaturated fluorocarbon compounds, the process comprising: a) providing a photochlorinator vessel comprising: 1) a UV lamp unit comprising a UV lamp located in a transparent inner well, the transparent inner well being located within a transparent outer well, the outer well being provided with material for cooling walls of the inner and outer wells; the inner well and the outer well defining separate chambers isolated from each other; and 2) a reaction vessel into which the UV lamp unit has been inserted; b) introducing into the reaction vessel a gaseous mixture of Cl2 and a distillation inseparable mixture of 1,1,1,3,3,3-hexafluoropropane and one or more unsaturated fluorocarbon compounds; c) reacting, in the gaseous state and in the presence of UV light from the photochlorinator, the mixture with Cl2 with the distillation inseparable mixture of 1,1,1,3,3,3-hexafluoropropane and one or more unsaturated compounds to saturate unsaturated fluorocarbons into a reacted mixture, and d) separating a purified 1,1,1,3,3,3-hexafluoropropane product containing less than 1000 ppm, most preferably less than 100 ppm unsaturated fluorocarbons.
    • 一种用于纯化1,1,1,3,3,3-六氟丙烷和一种或多种不饱和碳氟化合物的粗混合物的连续气相法,该方法包括:a)提供光氯化器容器,其包括:1)UV灯 该单元包括位于透明内部井中的UV灯,所述透明内部井位于透明外部井内,所述外部井具有用于冷却所述内部和外部井的壁的材料; 所述内部井和所述外部井定义分离的彼此隔离的室; 和2)UV灯单元插入其中的反应容器; b)向反应容器中加入Cl 2 Cl 2与1,1,1,3,3,3-六氟丙烷与一种或多种不饱和碳氟化合物的蒸馏不可分离混合物的气态混合物; c)以气态和在来自光氯提取器的紫外光存在下,将Cl 2与Cl 2的混合物与1,1,1,3,3,3-六氟丙烷的蒸馏不可分离的混合物反应 和一种或多种不饱和化合物使不饱和碳氟化合物饱和到反应混合物中,以及d)分离含有小于1000ppm,最优选小于100ppm的不饱和碳氟化合物的纯化1,1,1,3,3,3-六氟丙烷产物。