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    Multi component catalyst and its use in catalytic cracking
    1.
    发明授权
    Multi component catalyst and its use in catalytic cracking 有权
    多组分催化剂及其在催化裂化中的应用

    公开(公告)号：US07326332B2

    公开(公告)日：2008-02-05

    申请号：US10671080

    申请日：2003-09-25

    申请人： Tan-Jen Chen ,  John Scott Buchanan ,  Brian Erik Henry ,  Paul F. Keusenkothen ,  Philip A. Ruziska ,  David L. Stern

    发明人： Tan-Jen Chen ,  John Scott Buchanan ,  Brian Erik Henry ,  Paul F. Keusenkothen ,  Philip A. Ruziska ,  David L. Stern

    IPC分类号： C10G11/00 ,  C10G11/05

    CPC分类号： C10G11/05 ,  B01J29/005 ,  B01J29/40 ,  B01J29/85

    摘要： A multi component catalyst and catalytic cracking process for selectively producing C3 olefins. The catalyst comprises a first molecular sieve having an intermediate pore size, a second molecular sieve and, optionally a third molecular sieve having a large pore size. At least one of the channels of the second molecular sieve has a pore size index that is less than the pore size index of at least one channel of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 5 carbon atoms is contacted, under catalytic cracking conditions, with the multi component catalyst. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks.

    摘要翻译： 用于选择性制备C 3 O 3烯烃的多组分催化剂和催化裂解方法。 催化剂包括具有中等孔径的第一分子筛，第二分子筛和任选的具有大孔径的第三分子筛。 第二分子筛的至少一个通道的孔径指数小于第一分子筛的至少一个通道的孔径指数。 该方法通过使含有至少5个碳原子的烃的原料在催化裂化条件下与多组分催化剂接触来进行。 该催化剂可用于石脑油和重质烃原料的裂解。

    Hydrothermally stable catalyst and its use in catalytic cracking
    2.
    发明授权
    Hydrothermally stable catalyst and its use in catalytic cracking 失效
    水热稳定催化剂及其在催化裂化中的应用

    公开(公告)号：US07615143B2

    公开(公告)日：2009-11-10

    申请号：US10903152

    申请日：2004-07-30

    申请人： Tan-Jen Chen ,  Paul F. Keusenkothen ,  J. Jason Wu ,  John Scott Buchanan ,  Guang Cao ,  Larry L. Iaccino ,  David L. Stern ,  Matthew J. Vincent

    发明人： Tan-Jen Chen ,  Paul F. Keusenkothen ,  J. Jason Wu ,  John Scott Buchanan ,  Guang Cao ,  Larry L. Iaccino ,  David L. Stern ,  Matthew J. Vincent

    IPC分类号： C10G11/05

    CPC分类号： C10G11/05 ,  C10G2400/20

    摘要： There is provided a catalyst composition having improved hydrothermal stability for the catalytic cracking of a hydrocarbon feedstock to selectively produce propylene. The catalyst composition comprises a first crystalline molecular sieve selected from the group consisting of IM-5, MWW, ITH, FER, MFS, AEL, and AFO and an effective amount of a stabilization metal (copper, zirconium, or mixtures thereof) exchanged into the molecular sieve. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks. When used in the catalytic cracking of heavier hydrocarbon feedstocks, the catalyst composition preferably comprises a second molecular sieve having a pore size that is greater than the pore size of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 4 carbon atoms is contacted, under catalytic cracking conditions, with the catalyst composition.

    摘要翻译： 提供了一种具有改进的水热稳定性用于烃原料的催化裂化以选择性地生产丙烯的催化剂组合物。 催化剂组合物包含选自由IM-5，MWW，ITH，FER，MFS，AEL和AFO组成的组的第一结晶分子筛和有效量的稳定金属（铜，锆或其混合物）交换成 分子筛。 该催化剂可用于石脑油和重质烃原料的裂解。 当用于较重烃原料的催化裂化时，催化剂组合物优选包含具有大于第一分子筛孔径的孔径的第二分子筛。 该方法通过使含有至少4个碳原子的烃的原料在催化裂化条件下与催化剂组合物接触来进行。

    Production of dialkylbenzenes
    4.
    发明授权
    Production of dialkylbenzenes 有权
    生产二烷基苯

    公开(公告)号：US07361798B2

    公开(公告)日：2008-04-22

    申请号：US10946553

    申请日：2004-09-21

    申请人： Michael C. Clark ,  Ronald J. Cimini ,  Jane C. Cheng ,  David L. Stern ,  John Scott Buchanan

    发明人： Michael C. Clark ,  Ronald J. Cimini ,  Jane C. Cheng ,  David L. Stern ,  John Scott Buchanan

    IPC分类号： C07C5/22 ,  C07C1/20

    CPC分类号： C07C6/126 ,  Y02P20/582 ,  C07C15/02

    摘要： The invention relates to a process for producing a desired dialkylbenzene isomer having a formula R2C6H4, where R is an alkyl substituent, by contacting a polyalkylbenzene compound of formula RnC6H6-n, where n is an integer between 2 and 4, with a monoalkylbenzene compound of formula RC6H5 in the presence of a molecular sieve catalyst under reaction conditions sufficient to produce said dialkybenzene isomer. The preferred molecular sieve catalysts have pores or surface cavities greater than 5.6 Angstroms in diameter and/or an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07, and 3.42±0.07 Angstrom.

    摘要翻译： 本发明涉及制备具有式R 2 C 6 H 4 H 4的所需二烷基苯异构体的方法，其中R是烷基取代基， 通过使式R n 6 C 6 H 6-n N的多烷基苯化合物（其中n是2和4之间的整数）与单烷基苯 在分子筛催化剂存在下，在足以产生所述二烷基苯异构体的反应条件下，式RC 6 H 5 H 5的化合物。 优选的分子筛催化剂具有直径大于5.6埃的孔或表面空腔和/或包括在12.4±0.25,6.9±0.15,3.57±0.07和3.42±0.07埃处的d间距最大值的X射线衍射图。

    Isomerization of ethylbenzene and xylenes
    7.
    发明授权
    Isomerization of ethylbenzene and xylenes 失效
    乙苯异构化和二甲苯

    公开(公告)号：US06660896B1

    公开(公告)日：2003-12-09

    申请号：US10418439

    申请日：2003-04-16

    申请人： John Scott Buchanan ,  Xiaobing Feng ,  Gary David Mohr ,  David L. Stern

    发明人： John Scott Buchanan ,  Xiaobing Feng ,  Gary David Mohr ,  David L. Stern

    IPC分类号： C07C527

    CPC分类号： C07C5/2708 ,  C07C2529/40 ,  C07C2529/74 ,  C07C15/08

    摘要： In a process for isomerizing a feed comprising ethylbenzene and a mixture of xylene isomers, the feed is first contacted under xylene isomerization conditions with a first catalyst composition to produce an intermediate product having a higher para-xylene concentration than the feed, and then the intermediate product is contacted under ethylbenzene isomerization conditions with a second catalyst composition. The second catalyst composition comprises a hydrogenation-dehydrogenation component and a molecular sieve having 10-membered ring pores and is effective to selectively isomerize at least part of the ethylbenzene in the intermediate product to para-xylene and thereby produce a further product having a para-xylene concentration greater than the equilibrium concentration of para-xylene at said ethylbenzene isomerization conditions.

    摘要翻译： 在包含乙苯和二甲苯异构体的混合物的进料异构化的方法中，首先在二甲苯异构化条件下与第一催化剂组合物接触进料以产生具有比进料更高的对二甲苯浓度的中间产物，然后中间体 产物在乙苯异构化条件下与第二催化剂组合物接触。 第二催化剂组合物包含氢化脱氢组分和具有10元环孔的分子筛，并且有效地将中间产物中的至少部分乙苯选择性异构化成对二甲苯，从而产生另外具有对 - 所述乙苯异构化条件下二甲苯浓度大于对二甲苯的平衡浓度。

    Process and system for desulfurizing a gas stream
    8.
    发明授权
    Process and system for desulfurizing a gas stream 失效
    气流脱硫工艺和系统

    公开(公告)号：US06610264B1

    公开(公告)日：2003-08-26

    申请号：US08435920

    申请日：1995-05-05

    申请人： John Scott Buchanan ,  Joseph F. Sodomin, III ,  David L. Stern ,  Gerald J. Teitman

    发明人： John Scott Buchanan ,  Joseph F. Sodomin, III ,  David L. Stern ,  Gerald J. Teitman

    IPC分类号： B01D5348

    CPC分类号： B01D53/523 ,  B01D53/04 ,  B01D53/485 ,  B01D53/508 ,  B01D53/52 ,  B01D53/8609 ,  B01D53/8637 ,  B01D2253/10 ,  B01D2253/112 ,  B01D2253/306 ,  B01D2253/342 ,  B01D2253/3425 ,  B01D2257/30 ,  B01D2257/302 ,  B01D2257/304 ,  B01D2259/40092 ,  C01B17/0408 ,  C01B17/0456 ,  C01B17/0473

    摘要： A process and system is disclosed for removing sulfur from tail-gas emitted from a Claus sulfur recovery process. First, the tail-gas is oxidized so as to convert sulfur therein to sulfur oxides. Oxidized tail-gas is directed into an absorber where a solid absorbent absorbs substantially all the sulfur oxides thereon. After allowing sufficient time for a desired amount of sulfur oxides to be absorbed, absorption is ceased. Next, the solid absorbent containing the absorbed sulfur oxides is contacted with a reducing gas so as to release an off gas containing hydrogen sulfide and sulfur dioxide. Upon releasing sulfur from the solid absorbent, the solid absorbent is regenerated and redirected into the absorber. Sulfur in the off gas emitted by regeneration is concentrated to an extent sufficient for use within a Claus sulfur recovery process for conversion to elemental sulfur. By combining this process with a Claus sulfur recovery process, sulfur dioxide emissions can be reduced to less than about two parts per million.

    摘要翻译： 公开了一种从克劳斯硫回收方法排放的尾气中除去硫的方法和系统。 首先，尾气被氧化以便将硫转化为硫氧化物。 将氧化尾气引入吸收器中，其中固体吸收剂基本上吸收其上的所有硫氧化物。 在允许足够的时间吸收所需量的硫氧化物之后，停止吸收。 接下来，将含有吸收的硫氧化物的固体吸收剂与还原气体接触，以释放含有硫化氢和二氧化硫的废气。 从固体吸收剂中释放出硫后，固体吸收剂被再生并重定向到吸收体中。 通过再生发出的废气中的硫浓缩至足以在克劳斯硫回收过程中用于转化成元素硫的程度。 通过将该方法与克劳斯硫回收方法相结合，可将二氧化硫排放量减少至少于百万分之二。

    Porous crystalline materials, their synthesis and use
    9.
    发明授权
    Porous crystalline materials, their synthesis and use 有权
    多孔结晶材料，其合成和使用

    公开(公告)号：US08114195B2

    公开(公告)日：2012-02-14

    申请号：US12455732

    申请日：2009-06-05

    申请人： Zheng Ni ,  John Zengel ,  David L. Stern

    发明人： Zheng Ni ,  John Zengel ,  David L. Stern

    IPC分类号： B01D53/02 ,  C01B39/00

    CPC分类号： C07F5/022

    摘要： A porous crystalline material has a tetrahedral framework comprising a general structure, M1-IM-M2, wherein M1 comprises a metal having a first valency, wherein M2 comprises a metal having a second valency different from said first valency, and wherein IM is imidazolate or a substituted imidazolate linking moiety.

    摘要翻译： 多孔结晶材料具有包含一般结构M1-IM-M2的四面体骨架，其中M1包含具有第一价态的金属，其中M2包含具有不同于所述第一价态的第二价态的金属，并且其中IM为咪唑酸盐或 取代的咪唑酸酯连接部分。