利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

65 条记录 (耗时 0.034 秒)

    Multiple impregnation technique for the preparation of ex situ selectivated zeolite catalysts
    11.
    发明授权
    Multiple impregnation technique for the preparation of ex situ selectivated zeolite catalysts 失效
    用于制备异位选择性沸石催化剂的多重浸渍技术

    公开(公告)号：US5403800A

    公开(公告)日：1995-04-04

    申请号：US69255

    申请日：1993-05-28

    申请人： Jeffrey S. Beck ,  Sharon B. McCullen ,  David H. Olson

    发明人： Jeffrey S. Beck ,  Sharon B. McCullen ,  David H. Olson

    IPC分类号： B01J29/40 ,  B01J37/08 ,  C07C6/12 ,  B01J29/04 ,  B01J37/02

    CPC分类号： B01J29/40 ,  B01J37/086 ,  C07C6/123 ,  B01J2229/12 ,  B01J2229/32 ,  B01J2229/42 ,  C07C2529/40

    摘要： A ex situ selectivated catalytic molecular sieve for enhanced shape selective hydrocarbon conversions in which a catalytic molecular sieve is modified by being exposed to at least two selectivation sequences, each sequence including an impregnation of the molecular sieve with a selectivating agent and a subsequent calcination of the impregnated molecular sieve. The ex situ selectivation method is also described, including the use of aqueous carriers for the selecting agent. Also a method for in situ trim-selectivating the modified catalytic molecular sieve. Also, a method for moderate steaming of the selectivated molecular sieve. Also a method for in situ trim-selectivating the modified catalytic molecular sieve. Also described is the process for shape selective hydrocarbon conversion comprising contacting a hydrocarbon feedstream under conversion conditions with the selectivated molecular sieve.

    摘要翻译： 用于增强形状选择性烃转化的异位选择性催化分子筛，其中通过暴露于至少两个选择性序列来修饰催化分子筛，每个序列包括用选择性试剂浸渍分子筛，随后煅烧 浸渍分子筛。 还描述了非原位选择方法，包括使用含水载体用于选择剂。 也是用于原位修剪选择改性催化分子筛的方法。 另外，选择性分子筛中等蒸度的方法。 也是用于原位修剪选择改性催化分子筛的方法。 还描述了形状选择性烃转化的方法，包括在转化条件下使烃进料流与选择性分子筛接触。

    Selective toluene disproportionation process (STDP) with ex situ selectivated zeolite catalysts
    14.
    发明授权
    Selective toluene disproportionation process (STDP) with ex situ selectivated zeolite catalysts 失效
    选择性甲苯歧化过程（STDP）与非原位选择性沸石催化剂

    公开(公告)号：US5365004A

    公开(公告)日：1994-11-15

    申请号：US069259

    申请日：1993-05-28

    申请人： Jeffrey S. Beck ,  Sharon B. McCullen ,  David H. Olson

    发明人： Jeffrey S. Beck ,  Sharon B. McCullen ,  David H. Olson

    IPC分类号： C07C6/12 ,  C07C5/52

    CPC分类号： C07C6/123 ,  C07C2529/40

    摘要： A process for shape selective hydrocarbon conversion that involves contacting a hydrocarbon feedsteam, including toluene, under conversion conditions with a catalytic molecular sieve which has been modified by being ex situ selectivated with a silicon compound. The ex situ selectivation involves exposing the molecular sieve to at least two silicon impregnation sequences, each sequence comprising an impregnation with a silicon compound followed by calcination. The modified catalyst used in the process may also be steamed. Optionally, the modified catalyst may be trim-selectivated.

    摘要翻译： 一种用于形状选择性烃转化的方法，其包括在转化条件下使包含甲苯的烃进料流与通过用硅化合物进行非原位选择性修饰的催化分子筛接触。 异位选择包括将分子筛暴露于至少两个硅浸渍序列，每个序列包含用硅化合物浸渍，随后煅烧。 在该方法中使用的改性催化剂也可以蒸。 任选地，修饰的催化剂可以是修剪选择的。

    Dual-loop xylene isomerization process
    16.
    发明授权
    Dual-loop xylene isomerization process 有权
    双环二甲苯异构化工艺

    公开(公告)号：US5977420A

    公开(公告)日：1999-11-02

    申请号：US139463

    申请日：1998-08-25

    申请人： Jeevan S. Abichandani ,  Jeffrey S. Beck ,  Stephen H. Brown ,  Ronald J. Cimini ,  Ivy D. Johnson ,  Dimitris K. Liguras ,  David L. Stern

    发明人： Jeevan S. Abichandani ,  Jeffrey S. Beck ,  Stephen H. Brown ,  Ronald J. Cimini ,  Ivy D. Johnson ,  Dimitris K. Liguras ,  David L. Stern

    IPC分类号： C07C15/08 ,  C07C1/00 ,  C07C5/22

    CPC分类号： C07C15/08 ,  C07C2529/00

    摘要： A method for increasing the efficiency of xylene isomerization by using a two stage isomerization process. In the first stage of the process, a C.sub.9.sup.+ aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C.sub.8 aromatics are removed from the effluent, which is then processed in a second stage of the process to remove para-xylene and isomerize the para-xylene depleted effluent. The effluent from the second stage isomerization unit is then recycled into the inlet of the second stage of the process and a slip stream from the para-xylene separator is recycled to the feedstock and to the effluent of the ethylbenzene conversion unit. In this way, the production of para-xylene is maximized. In a preferred embodiment, toluene is co-fed into the feedstock to minimize the loss of xylenes during the ethylbenzene conversion reaction.

    摘要翻译： 一种通过使用两级异构化方法提高二甲苯异构化效率的方法。 在该方法的第一阶段，C9 +芳烃原料进行乙苯转化和二甲苯异构化。 从流出物中除去非-C 8芳族化合物，然后在该方法的第二阶段中处理以除去对二甲苯并使对二甲苯贫乏的流出物异构化。 然后将来自第二级异构化单元的流出物再循环到该方法的第二阶段的入口中，并且来自对二甲苯分离器的滑流再循环至原料和乙苯转化单元的流出物。 以这种方式，对二甲苯的生产最大化。 在优选的实施方案中，将甲苯共同进料到原料中以使乙苯转化反应期间二甲苯的损失最小化。