Process for the preparation of 2, 3, 3, 3-tetrafluoropropene
    115.
    发明授权
    Process for the preparation of 2, 3, 3, 3-tetrafluoropropene 有权
    制备2,3,3,3-四氟丙烯的方法

    公开(公告)号:US09162948B2

    公开(公告)日:2015-10-20

    申请号:US12992637

    申请日:2009-05-15

    摘要: The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1,2,3,3,3 hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3 hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3 -pentafluoropropene (1225ye); (c) contacting 1225 ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3 -pentafluoropropane (245eb); and (d) dehydrofluorinating (245eb) to produce (1234yf).

    摘要翻译: 本发明提供了一种制备1234yf的方法,其包括(a)在氢化催化剂存在下使1,1,2,3,3,3-六氟丙烯(1216)与氢气接触以产生1,1,2,3,3 ,3六氟丙烷(236ea); (b)脱氢氟化236ea以制备1,2,3,3,3-五氟丙烯(1225ye); (c)在氢化催化剂存在下,使氢气与氢气接触,制得1,2,3,3,3-五氟丙烷(245eb); 和(d)脱氟化氢(245eb)以产生(1234yf)。

    Combination reactor system
    116.
    发明授权
    Combination reactor system 有权
    组合反应器系统

    公开(公告)号:US08969634B2

    公开(公告)日:2015-03-03

    申请号:US13245328

    申请日:2011-09-26

    摘要: The present invention is directed to a combination reactor system for exothermic reactions comprising a trickle-bed reactor and a shell-and-tube reactor. This combination allows the system to efficiently remove heat while also providing the ability to control both the temperature and/or reaction progression. The trickle-bed reactor removes heat efficiently from the system by utilizing latent heat and does not require the use of a cooling or heating medium. The shell-and-tube reactor is used to further progress the reaction and provides a heat exchanger in order to introduce fluid at the desired temperature in the shell-and-tube reactor. Also, additional reactant or reactants and/or other fluids may be introduced to the shell-and-tube section of the reactor under controlled temperature conditions.

    摘要翻译: 本发明涉及一种用于放热反应的组合反应器系统,其包括滴流床反应器和管壳式反应器。 该组合允许系统有效地除去热量,同时还提供控制温度和/或反应进程的能力。 滴流反应器通过利用潜热从系统中有效地除去热量,并且不需要使用冷却或加热介质。 使用壳管式反应器进一步进行反应并提供热交换器以便在壳管式反应器中将所需温度的流体引入。 此外,可以在受控的温度条件下将另外的反应物或反应物和/或其它流体引入反应器的管壳部分。

    Process for the production of xylenes and light olefins
    117.
    发明授权
    Process for the production of xylenes and light olefins 有权
    生产二甲苯和轻质烯烃的方法

    公开(公告)号:US08921633B2

    公开(公告)日:2014-12-30

    申请号:US13465750

    申请日:2012-05-07

    摘要: In a hydrocarbon upgrading process, a hydrocarbon feed is treated in at least one of a steam cracker, catalytic cracker, coker, hydrocracker, and reformer under suitable conditions to produce a first stream comprising olefinic and aromatic hydrocarbons. A second stream composed mainly of C4 to C12+ olefinic and aromatic hydrocarbons is recovered from the first stream and blended said second stream with a residual fraction from a steam cracker or an atmospheric or vacuum distillation unit to produce a third stream. The third stream is then catalytically pyrolyzed in a reactor under conditions effective to produce a fourth stream having an increased benzene and/or toluene content compared with said second stream and a C3-olefin by-product. The C3-olefin by-product is recovered and benzene and/or toluene are recovered from the fourth stream.

    摘要翻译: 在烃改质方法中,在合适条件下,在蒸汽裂化器,催化裂化器,焦化器,加氢裂化器和重整器中的至少一种中处理烃进料以产生包含烯烃和芳族烃的第一流。 从第一流回收主要由C4至C12 +烯烃和芳烃组成的第二料流,并将所述第二料流与来自蒸汽裂化器或大气压或真空蒸馏装置的残余馏分混合以产生第三料流。 然后在有效产生与所述第二料流和C3-烯烃副产物相比具有增加的苯和/或甲苯含量的第四料流的条件下,在反应器中催化热解。 回收C3-烯烃副产物,从第四料流回收苯和/或甲苯。

    Azeotropic or azeotrope-like composition and process for producing 2,3,3,3-tetrafluoropropene
    119.
    发明授权
    Azeotropic or azeotrope-like composition and process for producing 2,3,3,3-tetrafluoropropene 有权
    共沸或类共沸组合物和制备2,3,3,3-四氟丙烯的方法

    公开(公告)号:US08853473B2

    公开(公告)日:2014-10-07

    申请号:US13060869

    申请日:2009-08-21

    摘要: The present invention provides a process for producing 2,3,3,3-tetrafluoropropene, comprising distilling a mixture of water and 2,3,3,3-tetrafluoropropene to separate the mixture into a first stream and a second stream, the first stream containing 2,3,3,3-tetrafluoropropene with a water content higher than the original mixture, and the second stream containing 2,3,3,3-tetrafluoropropene with a water content lower than the original mixture; and obtaining 2,3,3,3-tetrafluoropropene with a reduced water content from the second stream. The process of the invention can efficiently remove water from 2,3,3,3-tetrafluoropropene (HFO-1234yf).

    摘要翻译: 本发明提供一种生产2,3,3,3-四氟丙烯的方法,包括蒸馏水和2,3,3,3-四氟丙烯的混合物以将混合物分离成第一流和第二料流,第一料流 含有水分高于原始混合物的2,3,3,3-四氟丙烯,第二料流含有水分低于原始混合物的2,3,3,3-四氟丙烯; 并从第二流中获得具有降低的水含量的2,3,3,3-四氟丙烯。 本发明的方法可以有效地从2,3,3,3-四氟丙烯(HFO-1234yf)中除去水。