Apparatus for dehydrogenation process control
    4.
    发明授权
    Apparatus for dehydrogenation process control 失效
    脱氢工艺控制装置

    公开(公告)号:US5389342A

    公开(公告)日:1995-02-14

    申请号:US70811

    申请日:1993-06-03

    IPC分类号: B01J8/06 C07C5/333 G05D23/00

    摘要: In an endothermic steam active catalytic process employing a fixed catalyst bed in a fuel fired reactor for the dehydrogenation of alkanes to alkenes, wherein a reaction temperature above about 500.degree. C. (932.degree. F.) is maintained for commercially feasible conversions, and wherein catalyst activity declines during a production period, apparatus for control of a process temperature so as to compensate for catalyst activity decline includes a temperature sensor mounted in the reaction effluent stream in combination with a temperature controller which automatically adjusts the quantity of fuel supplied to the fired reactor.

    摘要翻译: 在用于将烷烃脱氢成烯烃的燃料燃烧反应器中使用固定催化剂床的吸热蒸汽活性催化方法中,保持高于约500℃(932°F)的反应温度用于商业上可行的转化,并且其中 催化剂活性在生产期间下降,用于控制工艺温度以补偿催化剂活性下降的装置包括安装在反应流出物流中的温度传感器,其与温度控制器结合,该温度控制器自动调节供应给燃烧器的燃料的量 反应堆。

    Dehydrogenation process control
    7.
    发明授权
    Dehydrogenation process control 失效
    脱氢过程控制

    公开(公告)号:US5243122A

    公开(公告)日:1993-09-07

    申请号:US814544

    申请日:1991-12-30

    IPC分类号: B01J8/06 C07C5/333

    摘要: In a steam active catalytic process employing a fixed catalyst bed for the dehydrogenation of alkanes to alkenes wherein reaction temperatures above about 500.degree. C. (932.degree. F.) must be maintained for commercially feasible conversions, the decline in catalyst activity druing a production period is slowed by maintaining a substantially constant temperature for the reaction effluent while allowing the average temperature of the fixed catalyst bed to rise during a production period.

    摘要翻译: 在使用固定催化剂床用于将烷烃脱氢至烯烃的蒸汽活性催化方法中,必须维持高于约500℃(932°F)的反应温度用于商业上可行的转化,生产周期中催化剂活性的下降 通过保持反应流出物的基本上恒定的温度而减缓,同时允许固定催化剂床的平均温度在生产期间升高。

    Methods of Preparation of an Olefin Oligomerization Catalyst
    8.
    发明申请
    Methods of Preparation of an Olefin Oligomerization Catalyst 有权
    烯烃低聚催化剂的制备方法

    公开(公告)号:US20080177122A1

    公开(公告)日:2008-07-24

    申请号:US12057853

    申请日:2008-03-28

    IPC分类号: C07C2/08

    摘要: A method of making a catalyst for use in oligomerizing an olefin, comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and optionally a solvent, the method comprising abating all or a portion of water, acidic protons, or both from a composition comprising the chromium-containing compound, a composition comprising the pyrrole-containing compound, a composition comprising a non-metal halide-containing compound, a composition comprising the solvent, or combinations thereof prior to contact thereof with a composition comprising a metal halide-containing compound.

    摘要翻译: 一种制备用于低聚烯烃的催化剂的方法,包括含铬化合物,含吡咯的化合物,金属烷基,含卤化合物和任选的溶剂,所述方法包括减少全部或部分 包含含铬化合物的组合物,包含含吡咯的化合物的组合物,包含非金属卤化物的化合物的组合物,包含溶剂的组合物或其接触前的组合的组合物,水,酸性质子或两者 其包含含有金属卤化物的化合物的组合物。

    Purification of cis-olefins
    9.
    发明授权
    Purification of cis-olefins 失效
    顺式烯烃的纯化

    公开(公告)号:US4940831A

    公开(公告)日:1990-07-10

    申请号:US312103

    申请日:1989-02-15

    IPC分类号: C07C7/00 C07C7/148 C07C11/02

    摘要: A method for purifying a cis-olefin formed by alkylating a sulfonate ester comprising mixing the reaction formed by alkylating a sulfonate ester with an acid solution, separating said acid solution, and mixing the resultant purification product with a C.sub.1 -C.sub.4 alcohol and optionally a base followed by separation and distillation, or passing said reaction mixture through a silica gel and collecting the cis-olefin fraction.

    摘要翻译: 一种纯化通过烷基化磺酸酯形成的顺式烯烃的方法,包括将通过烷基化磺酸酯与酸溶液形成的反应混合,分离所述酸溶液,并将得到的纯化产物与C1-C4醇和任选的碱 然后分离和蒸馏,或使所述反应混合物通过硅胶并收集顺式 - 烯烃级分。

    Chemical reactor feed control
    10.
    发明授权
    Chemical reactor feed control 失效
    化学反应堆饲料控制

    公开(公告)号:US5671153A

    公开(公告)日:1997-09-23

    申请号:US393768

    申请日:1995-02-24

    摘要: In a process for manufacture of a chemical product in which a plurality of individual reactant containing feedstreams are combined to form a mixed feedstream for a reactor, and wherein at least one of the plurality of feedstreams is subject to variations in reactant concentration, and another one of the plurality of feedstreams is essentially stable in reactant concentration, a desired ratio of relative reactant concentrations in the mixed feedstream is maintained by a control system which infers a reactant concentration ratio in the mixed feedstream based on process measurements and feed parameters related to the plurality of feedstock containing streams prior to their being combined. In use, flow rate of the feedstream which is essentially stable in reactant concentration is manipulated to maintain the inferred reactant concentrations in the mixed stream.

    摘要翻译: 在制造化学产品的方法中,其中将多个含有反应物的原料流混合以形成用于反应器的混合进料流,并且其中多个进料流中的至少一个受到反应物浓度的变化,另一个 多个进料流中的反应物浓度基本上是稳定的,通过控制系统维持混合进料流中相对反应物浓度的期望比例,该控制系统基于与多个流体相关的过程测量和进料参数推测混合进料流中的反应物浓度比 的原料含有物流之前的组合。 在使用中,操作基本上反应物浓度稳定的进料流的流速以维持混合流中推断的反应物浓度。