METHOD FOR PURIFYING 2-FLUOROBUTANE

    公开(公告)号:EP3023403B1

    公开(公告)日:2018-08-22

    申请号:EP14827140.6

    申请日:2014-07-16

    申请人: Zeon Corporation

    发明人: SUGIMOTO, Tatsuya

    摘要: The present invention is a method for 2-fluorobutane to obtain highly purified 2-fluorobutane through a process comprising a step for: bringing crude 2-fluorobutane that includes 5 to 50 wt% of butene into contact with a brominating agent that can form a bromonium ion in an aprotic polar solvent in the presence of water or an alcohol having up to 4 carbon atoms; converting the butene into compounds having a boiling point higher than that of 2-fluorobutane. then recovering 2-fluorbutane from the reaction solution; and purifying the recovered 2-fluorabutane by distillation.

    PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE
    3.
    发明公开
    PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON 2,3,3,3-TETRAFLUORPROPEN

    公开(公告)号:EP3150570A1

    公开(公告)日:2017-04-05

    申请号:EP16180735.9

    申请日:2009-07-31

    IPC分类号: C07C17/25 C07C21/18

    摘要: The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which includes the removal of impurities present in 245eb raw material, the dehydrofluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows one to lower the levels of undesired 1225ye and trifluoropropyne in the final 1234yf product below 500, and 50 ppm, respectively.

    摘要翻译: 本发明公开了一种从245eb生产高纯度1234yf的制造方法,其中包括去除245eb原料中存在的杂质,245eb的脱氟化氢和去除最终粗产物中存在的杂质。 所公开的制造方法允许一种降低最终1234yf产物中不希望的1225ye和三氟丙炔的水平低于500和50ppm。

    PROCESS FOR THE REDUCTION OF ALKYNE IMPURITIES IN FLUOROOLEFINS
    4.
    发明公开
    PROCESS FOR THE REDUCTION OF ALKYNE IMPURITIES IN FLUOROOLEFINS 有权
    VERFAHREN ZUR REDUKTION VON RFCCX-VERUNREINIGUNGEN FLUOROLEFINEN

    公开(公告)号:EP2970055A4

    公开(公告)日:2016-11-23

    申请号:EP14770673

    申请日:2014-03-14

    IPC分类号: C07C17/25 B01J29/06 C07C21/22

    摘要: This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one alkyne impurity with at least one zeolite to reduce the concentration of the at least one alkyne impurity in the mixture; wherein Rf is a straight-chain perfluorinated alkyl group, and X is H, F, Cl, Br or I; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF3CF=CH2, CF3CH=CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF3CCl=CH2, CF3CH=CHCl, and mixtures thereof.

    摘要翻译: 本公开涉及涉及使包含至少一种氟烯烃和至少一种炔杂质的混合物与至少一种沸石接触以减少混合物中至少一种炔杂质的浓度的方法; 其中Rf是直链全氟烷基,X是H,F,Cl,Br或I; 并且所述至少一种沸石选自开孔度为至少4埃且不大于约5埃的沸石,孔开孔至少约5埃的沸石和不超过约2.6的孔氏体电离性, 及其混合物; 条件是至少一种沸石不是沸石4A。 本公开还涉及制备至少一种选自CF 3 CF = CH 2,CF 3 CH = CHF及其混合物的氢四氟丙烯产物的方法; 并且涉及制备选自CF 3 CCl = CH 2,CF 3 CH = CHCl的至少一种氯三氟甲苯产物及其混合物的方法。

    INTEGRATED PROCESS TO COPRODUCE TRANS-1-CHLORO-3,3,3-TRIFLUOROPROPENE, TRANS-1,3,3,3-TETRAFLUOROPROPENE, AND 1,1,1,3,3-PENTAFLUOROPROPANE
    8.
    发明公开
    INTEGRATED PROCESS TO COPRODUCE TRANS-1-CHLORO-3,3,3-TRIFLUOROPROPENE, TRANS-1,3,3,3-TETRAFLUOROPROPENE, AND 1,1,1,3,3-PENTAFLUOROPROPANE 审中-公开
    反式-1-氯-3,3,3-三氟丙烯,反式-1,3,3,3-四氟丙烯和1,1,1,3,3-五氟丙烯的一体化方法

    公开(公告)号:EP2831024A1

    公开(公告)日:2015-02-04

    申请号:EP13768998.0

    申请日:2013-03-15

    摘要: Disclosed is an integrated manufacturing process to co-produce (E) 1-chloro-3,3,3-trifluoropropene, (E) 1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single starting feed material or a mixture of unsaturated hydrochlorocarbon feed materials comprising 1,1,1,3-tetrachloropropene and/or 1,1,3,3-tetrachloropropene. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E) 1-chloro-3,3,3-trifluoro-propene (1233zd (E)) from these feed materials, which may also include 240fa. In the second liquid phase fluorination reactor 1233zd (E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E) 1,3,3,3-tetrafluoropropene (1234ze (E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst. This operation may be followed by one or more purification processes to recover the 1234ze (E) product.

    摘要翻译: 公开了共同生产(E)1-氯-3,3,3-三氟丙烯,(E)1,3,3,3-四氟丙烯和1,1,1,3,3-五氟 - 丙烷,其起始于单一起始进料或包含1,1,1,3-四氯丙烯和/或1,1,3,3-四氯丙烯的不饱和氢氯碳进料的混合物。 该方法包括从这些进料中直接产生(E)1-氯-3,3,3-三氟丙烯(1233zd(E))的组合液相或气相反应/纯化操作,所述进料还可包含240fa。 在第二液相氟化反应器1233zd(E)中,在催化剂存在下与HF接触,以高转化率和选择性生产1,1,1,3,3-五氟丙烷(245fa)。 第三反应器用于245fa的脱氟化氢以通过使液相与苛性碱溶液接触或使用脱氟化氢催化剂在气相中接触来生产(E)1,3,3,3-四氟 - 丙烯(1234ze(E)) 。 该操作之后可以进行一个或多个纯化过程来回收1234ze(E)产品。

    METHOD FOR RECOVERING TRANS-1,2-DICHLOROETHENE
    10.
    发明公开
    METHOD FOR RECOVERING TRANS-1,2-DICHLOROETHENE 审中-公开
    回收1,2-二氯乙烯的方法

    公开(公告)号:EP1740519A1

    公开(公告)日:2007-01-10

    申请号:EP05736308.7

    申请日:2005-04-15

    摘要: Describes a method for recovering trans-1,2-dichloroethene from a liquid feed composition comprising both the cis- and trans- isomers of 1,2-dichloroethene and contaminating amounts of other chlorinated hydrocarbons, e.g., lower alkyl chlorinated hydrocarbons, such as C?1#191-C?2#191 chlorinated hydrocaarbons. In one of the described methods, the liquid feed composition is introduced into a first distillation column 10 wherein the stereoisomers and chlorinated hydrocarbons more volatile than the stereoisomers are removed as overhead 12 and charged to a second distillation column 20. In column 20, the stereoisomers are separated from the more volatile chlorinated hydrocarbons, and a bottoms fraction 24 comprising the stereoisomers are charged to a reaction distillation column 30 wherein the cis- isomer, is isomerized to the trans- isomer in the liquid phase and in the presence of an organic free-radical initiator, e.g., an azonitrile initiator. Substantially pure trans-1,2-dichloroethene is recovered as overhead 32 from reaction distillation column 30.

    摘要翻译: 描述了从包含1,2-二氯乙烯的顺式和反式异构体以及污染量的其它氯代烃(例如低级烷基氯代烃如C)的液体进料组合物中回收反式-1,2-二氯乙烯的方法 ?1#191-C?2#191氯化碳氢化合物。 在所述方法之一中,将液体进料组合物引入第一蒸馏塔10中,其中比立体异构体更易挥发的立体异构体和氯化烃作为塔顶馏出物12被除去并装入第二蒸馏塔20.在塔20中,立体异构体 与挥发性更高的氯化烃分离,将包含立体异构体的塔底馏分24装入反应蒸馏塔30中,其中顺式异构体在液相中异构化为反式异构体并且在无有机物 - 自由基引发剂,例如偶氮腈引发剂。 基本纯的反式-1,2-二氯乙烯作为塔顶馏出物32从反应蒸馏塔30中回收。