Reactor for carrying out gas-phase reactions using heterogeneous
catalysts
    2.
    发明授权
    Reactor for carrying out gas-phase reactions using heterogeneous catalysts 失效
    使用多相催化剂进行气相反应的反应器

    公开(公告)号:US5658538A

    公开(公告)日:1997-08-19

    申请号:US550738

    申请日:1995-10-31

    CPC classification number: B01J8/06 B01J8/0285 C07C5/333 B01J2208/00221

    Abstract: Apparatus, in particular reactor for carrying out endothermic catalytically promoted gas-phase reactions, which has, arranged one on top of the other or one inside the other in a common jacket, a tube-bundle heat exchanger 1 consisting of a plurality of parallel tubes provided with baffles 1a securing a flow of the heat exchanging medium in a direction transverse to the axis of said tubes, a reaction space 6 which preferably widens conically upward, has a base and is intended for holding a catalyst bed, a tube-bundle heat exchanger 2 to which material flows laterally and which is provided with baffles 2a, a reaction space 4 which has a base, is closed at the top by a gas dome and is intended for holding a catalyst bed, a central tube 3 for connecting the outer space of the heat exchanger 1 to the gas space above the reaction space 4, and inlet and outlet means for a heating or cooling gas (c) and inlet and outlet means (a or b) for the fresh gas or reaction mixture, respectively.

    Abstract translation: 装置,特别是用于进行吸热催化促进的气相反应的反应器,其具有一个在另一个的顶部或另一个上在一个共同的夹套中排列的管 - 热交换器1,由多个平行的管 设置有挡板1a,该挡板1a沿横向于所述管的轴线的方向固定热交换介质的流动,反应空间6优选地向上锥形向上扩展,具有基部并且用于保持催化剂床,管束热 交换器2,其材料横向流动并且设置有挡板2a,具有基座的反应空间4在顶部由气体圆顶封闭并且用于保持催化剂床,用于连接外部的中心管3 热交换器1的空间与反应空间4上方的气体空间以及用于新鲜气体或反应混合物的加热或冷却气体(c)和入口和出口装置(a或b)的入口和出口装置。

    Dehydrogenation of ethylbenzene
    6.
    发明授权
    Dehydrogenation of ethylbenzene 失效
    乙苯脱氢

    公开(公告)号:US5856605A

    公开(公告)日:1999-01-05

    申请号:US859184

    申请日:1997-05-20

    CPC classification number: C07C5/333

    Abstract: A process for the dehydrogenation of ethylbenzene to styrene with input of heat by a heat-transfer medium on a dehydrogenation catalyst which is essentially located in a tube bundle, wherein the heat-transfer medium flows countercurrently to the reaction mixture in the region of the tube bundle, and, if required, another reaction chamber is located downstream of the tube bundle and is provided with a catalyst for adiabatic reaction.

    Abstract translation: 一种通过热传递介质在基本上位于管束中的脱氢催化剂输入热量使乙苯脱氢的方法,其中传热介质在管的区域中与反应混合物逆流流动 并且如果需要,另一反应室位于管束的下游,并且设置有用于绝热反应的催化剂。

    Method for the continuous production of thermoplastic molding materials
    7.
    发明授权
    Method for the continuous production of thermoplastic molding materials 失效
    连续生产热塑性成型材料的方法

    公开(公告)号:US06399703B1

    公开(公告)日:2002-06-04

    申请号:US09582879

    申请日:2000-07-06

    CPC classification number: C08F279/02 C08F287/00 C08F212/08

    Abstract: A process for preparing impact-modified styrene polymers (HIPS) omprises anionic polymerization of styrene in the presence of a rubber in one or more polymerization reactors in succession. The rubber is prepared in solution in an immediately upstream process. The heat of polymerization is utilized to remove the solvent for the rubber, this solvent having a boiling point lower than those of styrene and ethylbenzene, from at least one of the polymerization reactors via distillation with distillative cooling, and the solvent is reintroduced into the process of rubber preparation.

    Abstract translation: 制备冲击改性苯乙烯聚合物(HIPS)的方法在连续的一个或多个聚合反应器中在橡胶存在下进行苯乙烯的阴离子聚合。 橡胶在紧密上游过程中在溶液中制备。 使用聚合热来除去溶剂,该溶剂的沸点低于苯乙烯和乙苯的溶剂,来自至少一个聚合反应器通过蒸馏蒸馏冷却,并将溶剂重新引入该方法 的橡胶制剂。

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