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62 条记录 (耗时 0.042 秒)

    Isomerization of ethylbenzene and xylenes
    11.
    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
    12.
    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。

    Multi component catalyst and its use in catalytic cracking
    13.
    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
    15.
    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。

    Oxidation of hydrocarbons
    17.
    发明授权
    Oxidation of hydrocarbons 有权
    碳氢化合物的氧化

    公开(公告)号：US08658836B2

    公开(公告)日：2014-02-25

    申请号：US12678419

    申请日：2008-10-08

    申请人： Francisco M. Benitez ,  Jihad M. Dakka ,  Edmund J. Mozeleski ,  Stephen Zushma ,  John Scott Buchanan ,  Jon E. Stanat

    发明人： Francisco M. Benitez ,  Jihad M. Dakka ,  Edmund J. Mozeleski ,  Stephen Zushma ,  John Scott Buchanan ,  Jon E. Stanat

    IPC分类号： C07C409/00

    CPC分类号： C07C409/08 ,  C07B41/00 ,  C07C37/07 ,  C07C37/08 ,  C07C37/20 ,  C07C45/33 ,  C07C45/53 ,  C07C51/313 ,  C07C407/00 ,  C07C409/04 ,  C07C409/10 ,  C07C409/14 ,  C07C2601/14 ,  C07C49/403 ,  C07C55/14 ,  C07C39/04 ,  C07C39/16

    摘要： In a process for oxidizing a hydrocarbon to the corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, a reaction medium comprising a hydrocarbon is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide of the general formula (I): wherein each of R1 and R2 is independently selected from hydrocarbyl and substituted hydrocarbyl radicals having 1 to 20 carbon atoms, or from the groups SO3H, NH2, OH and NO2, or from the atoms H, F, Cl, Br and I provided that R1 and R2 can be linked to one another via a covalent bond; each of Q1 and Q2 is independently selected from C, CH, N, and CR3; each of X and Z is independently selected from C, S, CH2, N, P and an element of Group 4 of the Periodic Table; Y is O or OH; k is 0, 1, or 2; l is 0, 1, or 2; m is 1 to 3; and R3 can be any of the entities listed for R1. The contacting is conducted under conditions such as to maintain the concentration of both water and organic acids in the reaction medium below 50 ppm.

    摘要翻译： 在将烃类氧化成相应的氢过氧化物，醇，酮，羧酸或二羧酸的方法中，将包含烃的反应介质与含氧气体在含有通式 （I）：其中R 1和R 2各自独立地选自具有1至20个碳原子的烃基和取代烃基，或从SO 3 H，NH 2，OH和NO 2基团，或从原子H，F，Cl，Br和 我提供R1和R2可以通过共价键彼此连接; Q1和Q2中的每一个独立地选自C，CH，N和CR 3; X和Z各自独立地选自C，S，CH 2，N，P和元素周期表第4族的元素; Y为O或OH; k为0,1或2; l为0,1或2; m为1〜3; 而R3可以是为R1列出的任何实体。 在使反应介质中的水和有机酸的浓度保持在50ppm以下的条件下进行接触。