Recycle of low boiling point products to a Fischer-Tropsch reactor
    21.
    发明授权
    Recycle of low boiling point products to a Fischer-Tropsch reactor 有权
    低沸点产物回收到费 - 托反应器

    公开(公告)号:US07019038B2

    公开(公告)日:2006-03-28

    申请号:US10446263

    申请日:2003-05-23

    IPC分类号: C07C27/00

    CPC分类号: C10G2/32

    摘要: Methods for reducing the average molecular weight of liquid hydrocarbons in a Fischer-Tropsch reactor are disclosed. The preferred embodiments of the present invention are characterized by feeding a hydrocarbon stream, which lowers the average molecular weight of the hydrocarbon liquids inside the reactor, and more preferably by recycling a portion of low-molecular weight hydrocarbon products back into the reactor. Lowering the molecular weight of the hydrocarbon liquids inside the reactor increases the mass transfer and solubility, and diffusivity of the reactants in the hydrocarbons present in the slurry.

    摘要翻译: 公开了用于降低费 - 托反应器中液体烃的平均分子量的方法。 本发明的优选实施方案的特征在于进料烃流,其降低反应器内的烃液体的平均分子量,更优选通过将一部分低分子量烃产物再循环回反应器。 降低反应器内的烃液体的分子量增加了浆料中存在的烃中的反应物的传质和溶解度以及扩散系数。

    Recover and recycle rhodium from spent partial oxidation catalysts
    24.
    发明授权
    Recover and recycle rhodium from spent partial oxidation catalysts 失效
    从废部分氧化催化剂回收和回收铑

    公开(公告)号:US06764662B2

    公开(公告)日:2004-07-20

    申请号:US10176224

    申请日:2002-06-20

    IPC分类号: C01G5500

    摘要: A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a temperature sufficient to convert at least a portion of rhodium to Rh2O3, leaching the host material in a solution with a leaching constituent which is reactive with Rh2O3 to form a first intermediate species, reacting the first intermediate species in a solution with an acidifying constituent or complexing agent to form a second intermediate species, and purifying the second intermediate species. Preferably, the roasting temperature is approximately from 600° C. to 800° C. for 0.5 to 10 hours. In some embodiments, the host material is ground to particles in the range of 0.1 to 10 mm.

    摘要翻译: 从废负载型催化剂中回收铑的方法。 在一个实施方案中,从主体材料回收铑的方法包括在足以将至少一部分铑转化为Rh 2 O 3的温度下在空气中焙烧主体材料,将主体材料浸入溶液中,浸出成分与 Rh 2 O 3以形成第一中间物质,使溶液中的第一中间物质与酸化成分或络合剂反应以形成第二中间物质,并纯化第二中间物质。 优选地,焙烧温度为约600℃至800℃,持续0.5至10小时。 在一些实施方案中,将主体材料研磨至0.1至10mm范围内的颗粒。

    Process for bead size control in vinyl aromatic suspension
polymerization using sodium polystyrenesulphonate
    26.
    发明授权
    Process for bead size control in vinyl aromatic suspension polymerization using sodium polystyrenesulphonate 失效
    使用聚苯乙烯磺酸钠进行乙烯基芳香族悬浮聚合中珠粒尺寸控制的方法

    公开(公告)号:US4500692A

    公开(公告)日:1985-02-19

    申请号:US417306

    申请日:1982-09-13

    申请人: Harold A. Wright

    发明人: Harold A. Wright

    IPC分类号: C08F2/20 C08F12/08

    CPC分类号: C08F12/08

    摘要: The production of polymer beads from vinyl aromatic monomers, using an inorganic phosphate aqueous suspension polymerization process is effected with the addition of 0.0001 to 0.004 percent by weight of a polystyrenesulfonate with the production of beads having a narrow bead size distribution. In addition to the improved bead size distribution, large beads can be produced which retain their sphericity.

    摘要翻译: 使用无机磷酸盐水悬浮聚合方法从乙烯基芳族单体制备聚合物珠粒,通过加入0.0001至0.004重量%的聚苯乙烯磺酸盐,生产具有窄珠粒度分布的珠粒。 除了改善的珠粒度分布之外,可以生产保留其球形度的大珠粒。

    Protected fischer-tropsch catalyst and method of providing same to a fischer-tropsch process
    28.
    发明授权
    Protected fischer-tropsch catalyst and method of providing same to a fischer-tropsch process 有权
    保护的费 - 托催化剂及其提供给费 - 托法的方法

    公开(公告)号:US08530366B2

    公开(公告)日:2013-09-10

    申请号:US12984902

    申请日:2011-01-05

    IPC分类号: B01J20/34 C07C27/00

    摘要: A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

    摘要翻译: 通过将喷雾干燥的催化剂颗粒与蜡组合来制备喷雾干燥的催化剂的方法,使喷雾干燥的催化剂颗粒用蜡涂覆,产生蜡涂覆的催化剂颗粒,并使蜡涂覆的催化剂成形以提供成形的涂蜡催化剂。 通过使催化剂颗粒与活化容器中的还原气体接触以产生活化的催化剂来活化含有氧化物的费 - 托催化剂颗粒的方法,其中在不存在液体介质的条件下进行接触。 一种用于活化费 - 托催化剂的系统,其包含活化反应器,所述活化反应器配置成在没有液体介质的情况下将活化气体引入费 - 托催化剂的固定或流化床,以及至少一个分离装置,其被配置为分离气流 包括夹带的催化剂细粒,其具有低于来自活化反应器的所需截留尺寸的平均粒度。