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    Desulfurizing tailgas from sulfur recovery unit
    1.
    发明授权
    Desulfurizing tailgas from sulfur recovery unit 失效
    硫回收装置脱硫

    公开(公告)号：US5514351A

    公开(公告)日：1996-05-07

    申请号：US186934

    申请日：1994-01-27

    申请人： John S. Buchanan ,  Jagannathan N. Iyengar ,  David L. Stern

    发明人： John S. Buchanan ,  Jagannathan N. Iyengar ,  David L. Stern

    IPC分类号： B01D53/04 ,  B01D53/48 ,  B01D53/50 ,  B01D53/52 ,  B01D53/86 ,  C01B17/04

    CPC分类号： B01D53/12 ,  B01D53/04 ,  B01D53/485 ,  B01D53/508 ,  B01D53/52 ,  B01D53/523 ,  B01D53/8609 ,  B01D53/8637 ,  C01B17/0408 ,  C01B17/0456 ,  C01B17/0473 ,  B01D2253/104 ,  B01D2257/30 ,  B01D2257/302 ,  Y02P20/129

    摘要： With sufficient oxygen but with no added fuel gas, recovering sulfur from a gas stream containing hydrogen sulfide by oxidizing the gas stream with heat exchange from heat generated in a thermal converter section of a sulfur recovery unit to convert the hydrogen sulfide in the gas stream to sulfur oxide, and thus form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with a solid adsorbent bed to extract the sulfur oxides and retain them as sulfur compounds, thus forming a sulfur oxide depleted gas stream. The adsorbent bed is then contacted with a reducing gas stream to reduce the retained sulfur compounds to hydrogen sulfide and/or sulfur dioxide and thereby form a hydrogen sulfide and/or sulfur dioxide bearing stream. Sulfur is recovered from the hydrogen sulfide and/or sulfur dioxide bearing stream, and the sulfur oxide depleted gas stream maybe sent to an incinerator or vented through a stack.

    摘要翻译： 用足够的氧气，但没有添加燃料气体，从硫回收装置的热转化器部分产生的热量通过热交换来氧化气流，从含有硫化氢的气流中回收硫，以将气流中的硫化氢转化为 硫氧化物，从而形成富含硫氧化物的气流。 富含硫氧化物的气流与固体吸附剂床接触以提取硫氧化物并将其保留为硫化合物，从而形成贫硫氧化物气流。 然后使吸附剂床与还原气流接触，将留下的硫化合物还原为硫化氢和/或二氧化硫，从而形成含硫化氢和/或二氧化硫的物流。 硫从硫化氢和/或含二氧化硫的物流中回收，硫氧化物贫化气体流可以送到焚化炉或通过堆垛排放。

    Porous crystalline materials, their synthesis and use
    2.
    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。

    Performance enhancement of zeolite catalysts with water cofeed
    8.
    发明授权
    Performance enhancement of zeolite catalysts with water cofeed 失效
    沸石催化剂与水共混物性能的提高

    公开(公告)号：US5773679A

    公开(公告)日：1998-06-30

    申请号：US578346

    申请日：1995-12-26

    申请人： Jeffrey S. Beck ,  David L. Stern

    发明人： Jeffrey S. Beck ,  David L. Stern

    IPC分类号： C07C6/12 ,  C07C5/52

    CPC分类号： C07C6/123 ,  B01J2229/12 ,  B01J2229/32 ,  C07C2529/40

    摘要： A process for shape-selective hydrocarbon conversion that involves initially contacting a feed stream which includes an alkylaromatic compound and a co-feed of water, under conversion conditions with a catalytic molecular sieve. Preferably, the catalytic molecular sieve has been modified by being ex situ selectivated with a silicon compound. After an effective amount of time, the water co-feed is omitted from the feed stream and the hydrocarbon conversion process is continued. Optionally, the catalytic molecular sieve can also be in situ 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与催化分子筛接触包括烷基芳族化合物和水的共同进料的进料流。 优选地，通过用硅化合物进行异地选择来改变催化分子筛。 在有效量的时间之后，从进料流中省去水共同进料，继续进行烃转化过程。 任选地，催化分子筛也可以原位修剪选择。