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1. 发明授权

US5492684A Graded-bed system for improved separations 失效
标题翻译：分级床系统，用于改进分离
公开(公告)号：US5492684A
公开(公告)日：1996-02-20
申请号：US335027
申请日：1994-11-07
申请人： J. Scott Buchanan , Khushrav E. Nariman
发明人： J. Scott Buchanan , Khushrav E. Nariman
IPC分类号： B01D53/50
CPC分类号： B01D53/508
摘要： A method and system useful for the removal of contaminants such as sulfur oxides from waste gas streams using a graded-bed system is disclosed. The graded-bed system uses beds with solid sorbents of two or more particle sizes in separate sections of the bed. In one embodiment, the solid sorbents are arranged so that the larger sorbent particles are disposed in the entrance region of the graded-bed system. In operation, a waste gas stream is passed over and through the solid sorbents so that contaminants, such as sulfur oxides and/or nitrogen oxides are adsorbed. The sorbent bed is then contacted with a reducing gas to desorb the sulfur oxides.
摘要翻译：公开了一种用于使用分级床系统从废气流中除去污染物如硫氧化物的方法和系统。分级床系统在床的单独部分中使用具有两个或更多个粒度的固体吸附剂的床。在一个实施方案中，固体吸附剂被布置成使得较大的吸附剂颗粒设置在分级床系统的入口区域中。在操作中，废气流通过并通过固体吸附剂，使得诸如硫氧化物和/或氮氧化物之类的污染物被吸附。然后将吸附剂床与还原气体接触以解吸硫氧化物。

2. 发明授权

US5728358A Sox sorbent regeneration 失效
标题翻译： Sox吸附剂再生
公开(公告)号：US5728358A
公开(公告)日：1998-03-17
申请号：US723373
申请日：1996-09-30
申请人： Amos A. Avidan , Nazeer A. Bhore , J. Scott Buchanan , David L. Johnson , Khushrav E. Nariman , David L. Stern
发明人： Amos A. Avidan , Nazeer A. Bhore , J. Scott Buchanan , David L. Johnson , Khushrav E. Nariman , David L. Stern
IPC分类号： B01D53/04 , B01D53/48 , B01D53/50 , B01D53/52 , B01D53/86 , C01B17/04 , B01J8/00 , C01B7/00
CPC分类号： B01D53/8609 , B01D53/04 , B01D53/485 , B01D53/508 , B01D53/52 , B01D53/523 , B01D53/8637 , C01B17/0408 , C01B17/0456 , C01B17/0473 , B01D2253/104 , B01D2253/112 , B01D2257/302 , B01D2259/40001
摘要： There is provided a process directed to the use of gases containing or mixed with carbon monoxide, such as synthesis gas, to aid in the regeneration of sulfur oxide-sorbed solid oxides, such as magnesium aluminates or spinels. This process is especially useful in applications where the solid oxide is used to purify the flue gas stream from an FCC regenerator, coal or oil-fired plant, power plant or process heat furnace, or the tail gas from a Claus plant. The process is also useful to remove sulfur oxides from flue gases produced in solid fuel combusters. According to this invention, carbon monoxide may be used alone or in combination with other gases to make the regeneration of the solid oxide exothermic or less endothermic, thereby improving the effectiveness of the regeneration.
摘要翻译：提供了一种涉及使用含有或与一氧化碳（例如合成气）混合的气体的方法，以帮助硫氧化物吸附的固体氧化物如铝酸镁或尖晶石的再生。该方法在使用固体氧化物净化来自FCC再生器，煤或燃油设备，发电厂或工艺加热炉或来自克劳斯工厂的尾气的烟气流的应用中尤其有用。该方法也可用于从固体燃料燃烧器中产生的烟道气中除去硫氧化物。根据本发明，一氧化碳可以单独使用或与其它气体组合使用，以使固体氧化物的再生发生放热或较少的吸热，从而提高再生的有效性。

3. 发明授权

US06538167B1 Process for producing light olefins 失效
标题翻译：轻质烯烃的生产工艺
公开(公告)号：US06538167B1
公开(公告)日：2003-03-25
申请号：US09687859
申请日：2000-10-13
申请人： Stephen H. Brown , William A. Weber , Reuel Shinnar , Khushrav E. Nariman , Larry A. Green , Mark F. Mathias , David H. Olson , Robert A. Ware
发明人： Stephen H. Brown , William A. Weber , Reuel Shinnar , Khushrav E. Nariman , Larry A. Green , Mark F. Mathias , David H. Olson , Robert A. Ware
IPC分类号： C07C120
CPC分类号： B01J29/005 , B01J29/061 , B01J29/82 , B01J2229/36 , B01J2229/40 , B01J2229/42 , C07C1/20 , C07C2/864 , C07C2521/02 , C07C2521/08 , C07C2521/10 , C07C2527/16 , C07C2529/40 , Y02P20/52 , Y02P20/582 , Y02P30/42 , C07C11/02 , C07C15/08
摘要： There is provided a process for converting methanol and/or dimethyl ether to a product containing C2 to C4 olefins which comprises the step of contacting a feed which contains methanol and/or dimethyl ether with a catalyst comprising a porous crystalline material. The contacting is conducted in the presence of a cofed aromatic compound under conversion conditions including a temperature of about 350° C. to about 550° C. and a methanol and/or dimethyl ether partial pressure less than or equal to 50 psia (345 kPa). The porous crystalline material used in the catalyst has a pore size greater than the critical diameter of the aromatic compound and a Diffusion Parameter for 2,2-dimethylbutane of about 0.1 to about 26 sec−1 when measured at a temperature of 120° C. and a 2,2- dimethylbutane pressure of 60 torr (8 kPa), and the aromatic compound is capable of alkylation by the methanol and/or dimethyl ether under said conversion conditions.
摘要翻译：提供了一种将甲醇和/或二甲醚转化为含有C2至C4烯烃的产物的方法，其包括使含有甲醇和/或二甲醚的进料与包含多孔结晶材料的催化剂接触的步骤。在共沸芳族化合物的存在下，在包括约350℃至约550℃的温度和甲醇和/或二甲醚分压低于或等于50psia（345kPa）的转化条件下进行接触）。在120℃的温度下测量时，催化剂中使用的多孔结晶材料具有大于芳族化合物的临界直径的孔径和约0.1至约26秒-1的2,2-二甲基丁烷的扩散参数。和二甲基丁烷压力为60托（8kPa），芳族化合物能够在所述转化条件下由甲醇和/或二甲醚进行烷基化。

4. 发明授权

US6030597A Process for treating H.sub.2 S containing streams 失效
标题翻译：用于处理含H2S的流的方法
公开(公告)号：US6030597A
公开(公告)日：2000-02-29
申请号：US3610
申请日：1998-01-07
申请人： John S. Buchanan , Khushrav E. Nariman
发明人： John S. Buchanan , Khushrav E. Nariman
IPC分类号： B01D53/52 , B01J20/04 , B01J20/06 , B01J20/08 , B01J20/28 , C01B17/04
CPC分类号： B01J20/28014 , B01D53/523 , B01J20/041 , B01J20/06 , B01J20/08 , B01J20/3433 , B01J20/3458 , C01B17/0404 , Y10S502/514
摘要： This invention is directed to an improved process for conversion of H2S to sulfur, using MOST(Mobil Offgas Sulfur Treatment) catalyst or sorbent. The sorbent is typically a magnesium-aluminate spinet, with oxidation promoters such as ceria and vanadia. H.sub.2 S from the feed gas is used to regenerate sulfated sorbent, simultaneously producing elemental sulfur which is then condensed out. The improvement involves combusting part of the feed, converting some of the feed H.sub.2 S to SO.sub.2 prior to contacting the sulfated sorbent. Thus much of the stoichiometric oxygen required for conversion of H.sub.2 S to S is supplied in the form of SO.sub.2 by this pre-combustion step, instead of coming totally from the oxidized/sulfated solid sorbent. This can decrease the amount of sorbent required, as well as the frequency of regenerations, thus reducing process cost. The hot combustion gas also helps to heat the feed stream. One or more Claus reactors may optionally be added, to further increase sulfur recovery efficiency.
摘要翻译：本发明涉及使用MOST（Mobil Offgas硫处理）催化剂或吸附剂将H2S转化为硫的改进方法。吸附剂通常是铝酸镁尖晶石，具有氧化促进剂，例如二氧化铈和氧钒。来自进料气体的H 2 S用于再生硫酸化吸附剂，同时产生元素硫，然后将其冷凝。改进之处在于使部分进料燃烧，然后在硫酸吸附剂接触之前将一些进料H2S转化为SO2。因此，通过该预燃烧步骤以SO 2的形式提供将H 2 S转化为S所需的大部分化学计量的氧气，而不是完全来自氧化/硫酸化的固体吸附剂。这可以减少所需的吸附剂的量以及再生的频率，从而降低工艺成本。热燃烧气体还有助于加热进料流。可以任选地加入一个或多个克劳斯反应器，以进一步提高硫回收效率。

5. 发明授权

US6027704A Process for the reduction of SO.sub.2 from wet lime/limestone tailgas in power plant desulfurization processes 失效
标题翻译：在发电厂脱硫工艺中，从湿石灰/石灰石尾气中还原二氧化硫的工艺
公开(公告)号：US6027704A
公开(公告)日：2000-02-22
申请号：US978249
申请日：1997-11-25
申请人： David L. Johnson , Khushrav E. Nariman , David L. Stern
发明人： David L. Johnson , Khushrav E. Nariman , David L. Stern
IPC分类号： B01D53/50 , B01D53/77 , B01D53/81 , B01D53/86 , C01B17/60
CPC分类号： B01D53/501 , B01D53/8637 , C01B17/60 , Y02P20/584
摘要： This invention describes a process for the scrubbing of sulfur oxides from the effluent of conventional wet lime/limestone SOx reduction processes in coal or oil-fired plants. The sulfur oxides are oxidatively sorbed onto solid sorbents such as magnesium aluminate spinel. Reduction with the appropriate reducing gases (such as hydrogen) regenerates the catalyst, also yielding a process stream concentrated in SOx. This concentrated SOx stream can then be refed to the front end of the coal or oil-fired plants, with the SOx thus produced ultimately being removed in the conventional wet scrubbing technology.
摘要翻译：本发明描述了一种从煤或燃油设备中的常规湿石灰/石灰石SOx还原过程的流出物中洗涤硫氧化物的方法。硫氧化物被氧化吸附在固体吸附剂如铝酸镁尖晶石上。用合适的还原气体（如氢气）还原催化剂，也产生浓缩在SOx中的工艺流。然后可以将这种浓缩的SOx流改为煤或燃油设备的前端，由此生产的SOx最终在常规的湿式洗涤技术中被除去。

6. 发明授权

US5958359A Process for treating H.sub.2 S-lean streams, with recycle of SOx from burner 失效
标题翻译：用于处理富含H2S的物流，从燃烧器回收SOx的方法
公开(公告)号：US5958359A
公开(公告)日：1999-09-28
申请号：US992168
申请日：1997-12-17
申请人： John S. Buchanan , Khushrav E. Nariman
发明人： John S. Buchanan , Khushrav E. Nariman
IPC分类号： B01D53/52 , B01D53/75 , B01D53/81 , B01J20/06 , C01B17/04
CPC分类号： B01J20/06 , B01D53/52 , B01D53/75 , B01D53/81 , C01B17/0404
摘要： This invention is directed to an improved process for conversion of H.sub.2 S to sulfur, using MOST(Mobil Offgas Sulfur Treatment) catalyst or sorbent. The sorbent is typically a magnesium-aluminate spinel, with oxidation promoters such as ceria and vanadia. H.sub.2 S from the feed gas is used to regenerate sulfated sorbent, simultaneously producing elemental sulfur which is then condensed out. The improvement involves recycling a portion of the effluent from a downstream burner to mix with the feed to the sorbent. Thus some of the stoichiometric oxygen required for conversion of H.sub.2 S to S is supplied in the form of SO.sub.2 by this pre-combustion step, instead of coming totally from the oxidized/sulfated solid sorbent. This can decrease the amount of sorbent required, as well as the frequency of regenerations, thus reducing process cost. The hot recycle gas also helps to heat the feed stream.
摘要翻译：本发明涉及使用MOST（Mobil Offgas硫处理）催化剂或吸附剂将H2S转化为硫的改进方法。吸附剂通常是铝酸镁尖晶石，具有氧化促进剂，例如二氧化铈和氧化钒。来自进料气体的H 2 S用于再生硫酸化吸附剂，同时产生元素硫，然后将其冷凝。该改进涉及将来自下游燃烧器的一部分流出物再循环到与吸附剂的进料混合。因此，通过该预燃烧步骤以SO 2的形式提供将H 2 S转化为S所需的一些化学计量的氧，而不是完全来自氧化/硫酸化的固体吸附剂。这可以减少所需的吸附剂的量以及再生的频率，从而降低工艺成本。热回收气体还有助于加热进料流。

7. 发明授权

US06222087B1 Catalytic production of light olefins rich in propylene 失效
标题翻译：催化生产富含丙烯的轻质烯烃
公开(公告)号：US06222087B1
公开(公告)日：2001-04-24
申请号：US09351146
申请日：1999-07-12
申请人： David L. Johnson , Khushrav E. Nariman , Robert A. Ware
发明人： David L. Johnson , Khushrav E. Nariman , Robert A. Ware
IPC分类号： C07C406
CPC分类号： C10G11/05 , C10G2400/20
摘要： A hydrocarbon feed containing C4-C7 olefins and/or paraffins is converted to light olefins, by contacting the feed with a catalyst containing ZSM-5 and/or ZSM-11, having an initial silica to alumina ratio greater than about 300:1, and phosphorus.
摘要翻译：通过使进料与含有ZSM-5和/或ZSM-11的催化剂接触，其初始二氧化硅与氧化铝的比率大于约300:1，将含有C 4 -C 7烯烃和/或链烷烃的烃进料转化为轻质烯烃，和磷。

8. 发明授权

US5741469A Process scheme for SO.sub.x removal from flue gases 失效
标题翻译：从烟道气中去除SOx的工艺方案
公开(公告)号：US5741469A
公开(公告)日：1998-04-21
申请号：US727843
申请日：1996-10-04
申请人： Nazeer A. Bhore , David L. Johnson , Khushrav E. Nariman , David L. Stern
发明人： Nazeer A. Bhore , David L. Johnson , Khushrav E. Nariman , David L. Stern
IPC分类号： B01D53/50 , B01D53/73 , C01B17/04 , B01J8/00 , C01B7/00
CPC分类号： C01B17/0473 , B01D53/508 , B01D53/73 , C01B17/04
摘要： A dry, regenerable solid oxide process directed to convert SO.sub.x from the flue gas stream from a power plant, a coal or oil-fired plant or process heat furnace, or an FCC regenerator to elemental sulfur without using a Claus unit, a hydrogen plant, a regeneration gas separation system, or a hydrogenation section. This dry, regenerable solid oxide process is also effective on Claus plant tail-gas. This process uses solid oxides, such as, for example, magnesium aluminates or spinels to remove sulfur oxides from flue gas streams. The solid oxide is then regenerated by a reducing gas to release the sulfur compounds contained on the solid oxide to produce a gas stream comprising hydrogen sulfide, sulfur oxides and elemental sulfur. The elemental sulfur is then condensed and recovered as a product and the resulting gas stream may be recycled to be reprocessed over the solid oxide.
摘要翻译：一种干式可再生固体氧化物工艺，其特征是将SO x从来自发电厂，煤或燃油电厂或工艺加热炉或FCC再生器的烟道气转化为元素硫，而不使用克劳斯单元，氢厂，再生气体分离系统或氢化部。这种干式可再生固体氧化物工艺对克劳斯植物尾气也是有效的。该方法使用固体氧化物，例如铝酸镁或尖晶石从烟道气流中除去硫氧化物。然后通过还原气体再生固体氧化物以释放固体氧化物上所含的硫化合物，以产生包含硫化氢，硫氧化物和元素硫的气流。然后将元素硫冷凝并回收，作为产物，所得气流可以再循环以在固体氧化物上再处理。

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