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公开(公告)号：US07544340B2
公开(公告)日：2009-06-09
申请号：US11717251
申请日：2007-03-13
申请人： Aqil Jamal , Howard S. Meyer , Nagaraju Palla , Dennis Leppin
发明人： Aqil Jamal , Howard S. Meyer , Nagaraju Palla , Dennis Leppin
CPC分类号： C01B17/167 , B01D53/1468 , B01D53/18 , B01D2257/304
摘要： A method for contacting a liquid with a gas in which the gas is introduced into a vessel containing at least one hollow fiber membrane having a plurality of porous hollow fibers. The liquid is introduced into a lumen of at least a portion of the plurality of porous hollow fibers at a liquid pressure sufficient to overcome a resistance to wetting of the porous hollow fibers, thereby covering at least a portion of an outer surface of the plurality of porous hollow fibers with the liquid and providing intimate contact between the gas and the liquid.
摘要翻译： 一种使液体与气体接触的方法，其中所述气体被引入包含至少一个具有多个多孔中空纤维的中空纤维膜的容器中。 液体以足以克服多孔中空纤维的润湿性的液体压力被引入到多个多孔中空纤维的至少一部分的内腔中，从而覆盖多个中空纤维的外表面的至少一部分 具有液体的多孔中空纤维，并提供气体和液体之间的紧密接触。
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公开(公告)号：US06946017B2
公开(公告)日：2005-09-20
申请号：US10728332
申请日：2003-12-04
申请人： Dennis Leppin , Alwarappa Sivaraman
发明人： Dennis Leppin , Alwarappa Sivaraman
CPC分类号： B01D53/1475 , Y02C10/06
摘要： A process for separation of carbon dioxide and methane in which a gas mixture comprising carbon dioxide and methane is brought into contact with a methane hydrate solid material disposed in a reactor vessel, whereby the methane hydrate is displaced by carbon dioxide hydrate, thereby freeing the methane, which is then removed from the reactor vessel.
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公开(公告)号：US09050557B1
公开(公告)日：2015-06-09
申请号：US14291911
申请日：2014-05-30
申请人： Dennis Leppin , Ajay Makkuni , Timothy Tamale
发明人： Dennis Leppin , Ajay Makkuni , Timothy Tamale
摘要： A process for removing sulfur dioxide from a hydrogen sulfide-containing gas utilizes a bubble tower and overcomes process control difficulties associated with known processes. Solvent is fed to the bubble tower, loaded with sulfur dioxide and maintained at desired temperature and pressure. Hydrogen sulfide-containing gas is bubbled through the solvent, causing chemical reaction between the sulfur dioxide and hydrogen sulfide to yield water and elemental sulfur. Elemental sulfur is collected and ultimately discharged from the bottom of the bubble tower, and hydrogen sulfide-depleted gas is discharged from the top.
摘要翻译： 从含硫化氢的气体中除去二氧化硫的方法利用气泡塔并克服与已知方法相关的过程控制困难。 将溶剂送入气泡塔，加载二氧化硫并保持在所需的温度和压力下。 含硫化氢的气体通过溶剂鼓泡，引起二氧化硫和硫化氢之间的化学反应产生水和元素硫。 元素硫被收集并最终从气泡塔的底部排出，并且从顶部排出贫硫的气体。
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4.发明授权公开(公告)号：US08268896B2
公开(公告)日：2012-09-18
申请号：US12698428
申请日：2010-02-02
申请人： Arunabha Basu , Iosif K Rabovitser , John J Lewnard , John M Pratapas , Howard S Meyer , Dennis Leppin , Dmitri Boulanov
发明人： Arunabha Basu , Iosif K Rabovitser , John J Lewnard , John M Pratapas , Howard S Meyer , Dennis Leppin , Dmitri Boulanov
CPC分类号： C10G2/30 , C01B3/36 , C01B3/38 , C01B3/382 , C01B3/384 , C01B3/386 , C01B3/48 , C01B2203/0233 , C01B2203/0244 , C01B2203/0255 , C01B2203/0261 , C01B2203/0283 , C01B2203/04 , C01B2203/0475 , C01B2203/0495 , C01B2203/062 , C01B2203/0844 , C01B2203/0894 , C01B2203/1241 , C01B2203/1247 , C01B2203/1258 , C01B2203/84 , C01B2203/86 , C10G2300/4012 , Y02P30/30
摘要： A method and system for co-production of electric power, fuel, and chemicals in which a synthesis gas at a first pressure is expanded using a stand-alone mechanical expander or a partial oxidation gas turbine, simultaneously producing electric power and an expanded synthesis gas at a second pressure after which the expanded synthesis gas is converted to a fuel and/or a chemical.
摘要翻译： 一种用于共同生产电力，燃料和化学品的方法和系统，其中使用独立的机械膨胀器或部分氧化燃气轮机来扩张第一压力的合成气，同时产生电力和膨胀合成气 在第二压力之后，将膨胀的合成气转化为燃料和/或化学品。
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5.发明申请公开(公告)号：US20110034569A1
公开(公告)日：2011-02-10
申请号：US12698428
申请日：2010-02-02
申请人： Arunabha Basu , Iosif K. Rabovitser , John J. Lewnard , John M. Pratapas , Howard S. Meyer , Dennis Leppin , Dmitri Boulanov
发明人： Arunabha Basu , Iosif K. Rabovitser , John J. Lewnard , John M. Pratapas , Howard S. Meyer , Dennis Leppin , Dmitri Boulanov
IPC分类号： C07C27/00
CPC分类号： C10G2/30 , C01B3/36 , C01B3/38 , C01B3/382 , C01B3/384 , C01B3/386 , C01B3/48 , C01B2203/0233 , C01B2203/0244 , C01B2203/0255 , C01B2203/0261 , C01B2203/0283 , C01B2203/04 , C01B2203/0475 , C01B2203/0495 , C01B2203/062 , C01B2203/0844 , C01B2203/0894 , C01B2203/1241 , C01B2203/1247 , C01B2203/1258 , C01B2203/84 , C01B2203/86 , C10G2300/4012 , Y02P30/30
摘要： A method and system for co-production of electric power, fuel, and chemicals in which a synthesis gas at a first pressure is expanded using a stand-alone mechanical expander or a partial oxidation gas turbine, simultaneously producing electric power and an expanded synthesis gas at a second pressure after which the expanded synthesis gas is converted to a fuel and/or a chemical.
摘要翻译： 一种用于共同生产电力，燃料和化学品的方法和系统，其中使用独立的机械膨胀器或部分氧化燃气轮机来扩张第一压力的合成气，同时产生电力和膨胀合成气 在第二压力之后，将膨胀的合成气转化为燃料和/或化学品。
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公开(公告)号：US20100251615A1
公开(公告)日：2010-10-07
申请号：US12815743
申请日：2010-06-15
CPC分类号： C10L3/08 , B01J23/883 , B01J37/0201 , B01J37/20 , C01B3/16 , C01B3/34 , C01B2203/0205 , C01B2203/0283 , C01B2203/042 , C01B2203/043 , C01B2203/0475 , C01B2203/0811 , C01B2203/0827 , C01B2203/1241 , C01B2203/1247 , C01B2203/1258 , C01B2203/148 , C10B49/10 , C10B53/02 , C10G3/42 , C10G3/46 , C10G3/50 , C10G3/57 , C10G2300/1011 , C10G2300/4006 , C10G2300/4012 , C10G2300/4018 , C10J3/463 , C10J2200/06 , C10J2300/0916 , C10J2300/1662 , C10K1/024 , C10K1/026 , C10K3/04 , C10L3/102 , C10L3/103 , C10L3/104 , Y02E50/14 , Y02E50/343 , Y02P20/145 , Y02P20/52 , Y02P30/20
摘要： A multi-stage method and apparatus for producing methane from biomass in which the biomass is hydropyrolyzed in a reactor vessel containing molecular hydrogen and a deoxygenating catalyst, the output of which is hydrogenated using a hydroconversion catalyst. The output from the hydroconversion step is provided to a water-gas-shift process providing a mixture of H2O and product gases including CO2, H2, and methane. The mixture components are separated, resulting in a product stream comprising substantially only methane.
摘要翻译： 一种用于从生物质生产甲烷的多级方法和装置，其中生物质在含有分子氢和脱氧催化剂的反应器中加氢热解，其输出使用加氢转化催化剂氢化。 来自加氢转化步骤的输出被提供给提供H 2 O和包括CO 2，H 2和甲烷在内的产物气体的混合物的水煤气变换过程。 分离混合物组分，产生基本上仅包含甲烷的产物流。
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公开(公告)号：US06475451B1
公开(公告)日：2002-11-05
申请号：US09644361
申请日：2000-08-23
申请人： Dennis Leppin , Nagaraju Palla
发明人： Dennis Leppin , Nagaraju Palla
IPC分类号： B01D5364
CPC分类号： C10L3/10 , B01D53/64 , B01D2257/602
摘要： A process for removing mercury from a gaseous process stream. The process involves contacting a mercury-containing gaseous process stream with a regenerable mercury scavenger solution to form a treated stream having a reduced mercury content as compared to the mercury-containing gaseous process stream and a used scavenger solution having an increased mercury content. The regenerable mercury scavenger solution contains an oxidizing agent such as nitric acid, a complexing agent such as oxygen-containing agents and/or thiol and a solvent, for example, a mixture of methanol and water.
摘要翻译： 从气态工艺流中除去汞的方法。 该方法包括使含汞的气态工艺流与可再生的汞清除剂溶液接触，以形成与含汞气体工艺流相比具有降低的汞含量的经处理的流和具有增加的汞含量的废清洁剂溶液。 可再生的汞清除剂溶液含有氧化剂如硝酸，络合剂如含氧试剂和/或硫醇和溶剂，例如甲醇和水的混合物。
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公开(公告)号：US07811544B1
公开(公告)日：2010-10-12
申请号：US12547525
申请日：2009-08-26
申请人： Dennis Leppin , Howard S. Meyer
发明人： Dennis Leppin , Howard S. Meyer
CPC分类号： C01B17/05 , B01J2219/00006
摘要： A method for recovering sulfur from a sulfur-bearing process gas stream in which a process gas stream comprising H2S and/or SO2 is contacted with a lean mixture of a lean UCSRP solution and a catalyst for promotion of a reaction between H2S and SO2 in anon-UCSRP vessel at a temperature below which H2S and SO2 react, whereby at least a portion of the H2S and/or SO2 is absorbed by the lean UCSRP solution, forming a rich mixture of a rich UCSRP solution and the catalyst. The rich mixture is introduced into a UCSRP vessel and heated to a reaction temperature greater than or equal to a melting temperature of sulfur, forming elemental sulfur and H2O.
摘要翻译： 从含硫工艺气体流中回收硫的方法，其中包含H 2 S和/或SO 2的工艺气体流与贫UCSRP溶液和催化剂的贫混合物接触，以促进在anon中的H 2 S和SO 2之间的反应 -UCSRP容器，其中低于其的H 2 S和SO 2反应，由此至少一部分H 2 S和/或SO 2被稀薄的UCSRP溶液吸收，形成富UCSRP溶液和催化剂的富混合物。 将富混合物引入UCSRP容器中并加热至大于或等于硫的解链温度的反应温度，形成元素硫和H 2 O.
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公开(公告)号：US5958360A
公开(公告)日：1999-09-28
申请号：US19957
申请日：1998-02-06
CPC分类号： B01D53/18 , B01D53/1468 , C01B17/05 , Y10S209/932 , Y10S423/09
摘要： A method and apparatus for contacting a gas and a liquid such as may be utilized in removing sulfur from gas streams, using a liquid redox process, are provided, which prevent or avoid buildup of elemental sulfur in the process equipment by introducing the hydrogen sulfide contaminated gas through a plurality of gas inlets tangentially distributed within the inner wall of the reaction vessel containing a liquid redox scrubbing solution.
摘要翻译： 提供了一种用于使气体和液体接触的方法和装置，其可以用于使用液体氧化还原方法从气流中除去硫，其通过引入硫化氢污染来防止或避免元素硫在工艺设备中的积累 气体通过切向分布在包含液体氧化还原洗涤溶液的反应容器的内壁内的多个气体入口。
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公开(公告)号：US5866089A
公开(公告)日：1999-02-02
申请号：US906078
申请日：1997-08-05
CPC分类号： C01B17/05 , B01D53/007 , B01D53/52
摘要： A method and apparatus for removing sulfur from gas streams, utilizing liquid redox, including an improved method for preventing build-up of elemental sulfur in a sulfur absorber. Ultrasonic irradiation of one or more portions of the structure of the absorber prevents sulfur build-up. In combination with monitoring of the pressure across the absorber, the freeing of sulfur from surfaces in an absorber can be automatically actuated.
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