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294 条记录 (耗时 0.015 秒)

    Method of separating chlorinated aliphatic hydrocarbons from mixtures thereof, by extractive distillation
    101.
    发明授权
    Method of separating chlorinated aliphatic hydrocarbons from mixtures thereof, by extractive distillation 失效
    通过萃取蒸馏从其混合物中分离氯化脂肪烃的方法

    公开(公告)号：US4121978A

    公开(公告)日：1978-10-24

    申请号：US734083

    申请日：1976-10-20

    申请人： Jacques Becuwe

    发明人： Jacques Becuwe

    IPC分类号： C07C17/386 ,  B01D3/34

    CPC分类号： C07C17/386

    摘要： A method for the partial or total separation by extractive distillation of C.sub.1 to C.sub.3 clorinated aliphatic hydrocarbons from mixtures of at least two such chlorinated hydrocarbons. The mixture of the chlorinated hydrocarbons is distilled in the presence of one or more other organic compounds having a boiling temperature higher than the substances to be separated, and selected from the group comprising saturated polyols, ethylene carbonate, propylene carbonate, dimethyl formamide, furfural, N-methylpyrrolidone, cyclohexanone, dimethylsulfoxide and, preferably, sulfolane and alkylsulfolanes in which the alkyl group is C.sub.1 or C.sub.2 ; use of this method for the separation of mixtures containing or essentially consisting of trichlorethylene and 1,2-dichloroethane.

    摘要翻译： 通过从至少两种这样的氯代烃的混合物中萃取蒸馏C1至C3的Clorinated脂族烃进行部分或全部分离的方法。 在一种或多种沸点温度高于待分离物质的其它有机化合物的存在下蒸馏氯化烃的混合物，选自饱和多元醇，碳酸亚乙酯，碳酸亚丙酯，二甲基甲酰胺，糠醛， N-甲基吡咯烷酮，环己酮，二甲基亚砜，优选为其中烷基为C1或C2的环丁砜和烷基硫醇; 使用该方法分离含有或基本上由三氯乙烯和1,2-二氯乙烷组成的混合物。

    Method of separating chlorinated aliphatic hydrocarbons with 1 to 3 carbon atoms from mixtures thereof by extractive distillation
    102.
    发明授权
    Method of separating chlorinated aliphatic hydrocarbons with 1 to 3 carbon atoms from mixtures thereof by extractive distillation 失效
    通过萃取蒸馏从其混合物中分离具有1至3个碳原子的氯化脂族烃的方法

    公开(公告)号：US4036703A

    公开(公告)日：1977-07-19

    申请号：US697200

    申请日：1976-06-17

    申请人： Jean-Claude Leroi ,  Francois Vachet

    发明人： Jean-Claude Leroi ,  Francois Vachet

    IPC分类号： C07C17/00 ,  C07C17/386 ,  C07C19/01 ,  C07C21/04 ,  C07C67/00 ,  B01D3/40 ,  C07C17/38

    CPC分类号： C07C17/386

    摘要： A method of partially or totally separating chlorinated aliphatic C.sub.1 to C.sub.3 hydrocarbons from mixtures of at least two of the chlorinated hydrocarbons by extractive distillation.The mixture of the chlorinated hydrocarbons is distilled in the presence of one or more third organic compounds having a boiling point higher than that of the substances to be separated, selected from the group comprising methyl, ethyl, normal propyl and isopropyl mono and di-chloroacetates; benzyl alcohol; salicylaldehyde, benzaldehyde, n-heptanal, methylisobutylketone, tetramethylurea, .gamma.-butyrolactone; normal propyl, isopropyl, normal, secondary and tertiary butyl acetylacetates; diethyl oxalate, dimethyl succinate and preferably methyl and ethyl acetylacetates; acetic anhydride, N-formyl-morpholine, 2-chloro ethanol, hexamethylphosphotriamide, dimethyl sulphate and normal tributyl and triisobutyl phosphates.This method is particularly applicable to separation of mixtures of 1,1,1-trichloro ethane and 1,2-dichloro ethane; trichloroethylene and 1,2-dichloro ethane; perchloroethylene and 1,1,2-trichloro ethane; and carbon tetrachloride and 1,2-dichloro ethane.

    摘要翻译： 通过萃取蒸馏从氯化烃中的至少两种的混合物中部分或完全分离氯化脂族C1至C3烃的方法。

    Process for distilling benzyl chloride or mixtures containing benzyl chloride
    103.
    发明授权
    Process for distilling benzyl chloride or mixtures containing benzyl chloride 失效
    用于蒸馏氯化亚铜或含有氯化烯的混合物的方法

    公开(公告)号：US3715283A

    公开(公告)日：1973-02-06

    申请号：US3715283D

    申请日：1970-12-22

    申请人： BAYER AG

    发明人： BOCKMANN W

    IPC分类号： C07C17/386 ,  C07C17/42 ,  B01D3/34 ,  C07C25/14

    CPC分类号： C07C17/386 ,  C07C17/42 ,  C07C22/04

    摘要： The invention relates to an improved process for distilling benzyl chloride or mixtures containing benzyl chloride, which is carried out in the presence of a lactam, appropriately in an amount of between about 0.01 and about 1 percent by weight.

    摘要翻译： 本发明涉及一种用于蒸馏苄基氯或含有苄基氯的混合物的改进方法，所述苄基氯在内酰胺存在下进行，其量为约0.01至约1重量％。

    METHOD FOR PRODUCING AND PURIFYING 2,3,3,3-TETRAFLUORO-1-PROPENE
    110.
    发明申请
    METHOD FOR PRODUCING AND PURIFYING 2,3,3,3-TETRAFLUORO-1-PROPENE 审中-公开

    公开(公告)号：US20180370880A1

    公开(公告)日：2018-12-27

    申请号：US16063301

    申请日：2016-12-14

    申请人： Arkema France

    发明人： Abdelatif BABA-AHMED ,  Bertrand COLLIER ,  Dominique DEUR-BERT ,  Irène EMERY ,  Laurent WENDLINGER

    IPC分类号： C07C17/386 ,  C07C17/25

    CPC分类号： C07C17/386 ,  C07C17/25 ,  C07C19/08 ,  C07C21/18 ,  C09K5/045 ,  C09K2205/126

    摘要： The invention relates to a method for purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 1,1,1,2,2-pentafluoropropane (245cb) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distillation of said second composition in order to form a third composition comprising said organic extraction agent and trans-1,3,3,3-tetrafluoro-I-propene (I234ze-E), and a stream comprising the 2,3,3,3-tetrafluoro-I-propene and the 1,1,1,2,2-pentafluoropropane (245cb); and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising the trans-1,3,3,3-tetrafluoro-I-propene (1234ze-E). The invention also relates to a method for producing 2,3,3,3-tetrafluoro-I-propene.