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1. 发明授权

US08888895B1 Method of CO2 removal from a gasesous stream at reduced temperature 有权
标题翻译：在降低温度下从气流中除去CO2的方法
公开(公告)号：US08888895B1
公开(公告)日：2014-11-18
申请号：US14022708
申请日：2013-09-10
申请人： James C. Fisher , Ranjani V. Siriwardane , David A. Berry , George A. Richards
发明人： James C. Fisher , Ranjani V. Siriwardane , David A. Berry , George A. Richards
IPC分类号： B01D53/02 , B01D53/04
CPC分类号： B01D53/0462 , B01D53/04 , B01D53/261 , B01D2253/104 , B01D2253/108 , B01D2257/504 , B01D2257/80 , B01D2259/4009 , Y02C10/08
摘要： A method for the removal of H2O and CO2 from a gaseous stream comprising H2O and CO2, such as a flue gas. The method initially utilizes an H2O removal sorbent to remove some portion of the H2O, producing a dry gaseous stream and a wet H2O removal sorbent. The dry gaseous stream is subsequently contacted with a CO2 removal sorbent to remove some portion of the CO2, generating a dry CO2 reduced stream and a loaded CO2 removal sorbent. The loaded CO2 removal sorbent is subsequently heated to produce a heated CO2 stream. The wet H2O removal sorbent and the dry CO2 reduced stream are contacted in a first regeneration stage, generating a partially regenerated H2O removal sorbent, and the partially regenerated H2O removal sorbent and the heated CO2 stream are subsequently contacted in a second regeneration stage. The first and second stage regeneration typically act to retain an initial monolayer of moisture on the various removal sorbents and only remove moisture layers bound to the initial monolayer, allowing for relatively low temperature and pressure operation.Generally the applicable H2O sorption/desorption processes may be conducted at temperatures less than about 70° C. and pressures less than 1.5 atmospheres, with certain operations conducted at temperatures less than about 50° C.
摘要翻译：一种从包含H 2 O和CO 2的气流如烟道气中除去H 2 O和CO 2的方法。该方法最初利用H 2 O去除吸附剂去除一部分H 2 O，产生干燥气流和湿H 2 O去除吸附剂。随后将干燥的气流与除去CO 2的吸附剂接触以除去CO 2的一部分，产生干燥的CO 2还原物流和负载的CO 2去除吸附剂。随后加载负载的CO 2去除吸附剂以产生加热的CO 2流。湿的H 2 O除去吸附剂和干的CO 2还原物流在第一再生阶段接触，产生部分再生的H 2 O去除吸附剂，并且部分再生的H 2 O除去吸附剂和加热的CO 2流随后在第二再生阶段中接触。第一和第二阶段再生通常用于在各种去除吸附剂上保留初始的单层水分，并且仅去除与初始单层结合的水分层，允许相对低的温度和压力操作。通常，适用的H 2 O吸附/解吸过程可以在低于约70℃的温度和低于1.5个大气压的压力下进行，一些操作在小于约50℃的温度下进行。

2. 发明授权

US08617499B1 Minimization of steam requirements and enhancement of water-gas shift reaction with warm gas temperature CO2 removal 有权
标题翻译：最小化蒸汽需求，并通过温暖的气体二氧化碳去除增强水煤气变换反应
公开(公告)号：US08617499B1
公开(公告)日：2013-12-31
申请号：US12887827
申请日：2010-09-22
申请人： Ranjani V. Siriwardane , James C. Fisher, II
发明人： Ranjani V. Siriwardane , James C. Fisher, II
IPC分类号： B01D53/62 , B01D53/78 , B01D53/96
CPC分类号： B01D53/62 , B01D53/96 , B01D2251/402 , B01D2257/504 , C01B3/16 , C01B3/56 , C01B2203/0283 , C01B2203/043 , C01B2203/0475 , Y02C10/04 , Y02P20/152
摘要： The disclosure utilizes a hydroxide sorbent for humidification and CO2 removal from a gaseous stream comprised of CO and CO2 prior to entry into a water-gas-shift reactor, in order to decrease CO2 concentration and increase H2O concentration and shift the water-gas shift reaction toward the forward reaction products CO2 and H2. The hydroxide sorbent may be utilized for absorption of CO2 exiting the water-gas shift reactor, producing an enriched H2 stream. The disclosure further provides for regeneration of the hydroxide sorbent at temperature approximating water-gas shift conditions, and for utilizing H2O product liberated as a result of the CO2 absorption.
摘要翻译：本公开使用氢氧化物吸附剂，在进入水煤气变换反应器之前，从由CO和CO 2组成的气态物流中除去CO 2，以便降低CO 2浓度并增加H 2 O浓度并改变水煤气变换反应朝着正向反应产物CO 2和H 2。氢氧化物吸附剂可用于吸收离开水煤气变换反应器的CO 2，产生富集的H 2流。本公开还提供了在接近水煤气变换条件的温度下氢氧化物吸附剂的再生，以及利用作为CO 2吸收的结果释放的H 2 O产物。

3. 发明授权

US09138683B1 CO2 removal sorbent composition with high chemical stability during multiple cycles 有权
标题翻译：在多个循环期间具有高化学稳定性的二氧化碳去除吸附剂组合物
公开(公告)号：US09138683B1
公开(公告)日：2015-09-22
申请号：US14297848
申请日：2014-06-06
申请人： Ranjani V. Siriwardane , Shira Rosencwaig
发明人： Ranjani V. Siriwardane , Shira Rosencwaig
IPC分类号： B01J20/30 , B01J20/04 , B01J20/06 , B01D53/04 , B01D53/52 , B01D53/62
CPC分类号： B01D53/62 , B01D53/02 , B01D53/52 , B01D53/526 , B01D53/80 , B01D2251/304 , B01D2251/604 , B01D2252/20405 , B01D2252/20489 , B01D2253/11 , B01D2257/504 , B01J20/04 , B01J20/041 , B01J20/043 , B01J20/06 , B01J20/12 , B01J20/22 , B01J20/2805 , B01J20/30 , B01J20/3204 , B01J20/3236 , B01J20/3248 , B01J20/3251 , B01J2220/46 , Y02A50/2342 , Y02C10/04 , Y02C10/08
摘要： Disclosed herein is a clay-alkali-amine CO2 sorbent composition prepared by integrating a clay substrate, basic alkali salt, and amine liquid. The basic alkali salt is present relative to the clay substrate in a weight ratio of from about 1 part to about 50 parts per 100 parts of the clay substrate. The amine liquid is present relative to a clay-alkali combination in a weight ratio of from about 1 part to about 10 parts per 10 parts of the clay-alkali combination. The clay-alkali-amine C02 sorbent is particularly advantageous for low temperature CO2 removal cycles in a gas stream having a C02 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air.
摘要翻译：本文公开了通过将粘土基质，碱性碱金属盐和胺液体整合制备的粘土 - 碱 - 胺二氧化碳吸附剂组合物。相对于粘土基质，碱性碱金属盐以每100份粘土基质约1份至约50份的重量比存在。相对于粘土 - 碱组合，胺液体以每10份粘土 - 碱组合重量比为约1份至约10份存在。粘土 - 碱 - 胺CO 2吸附剂对CO 2浓度小于约2000ppm，氧气浓度为21％左右的气流中的低温CO 2脱除循环特别有利。

4. 发明授权

US09004911B1 Apparatus and method for solid fuel chemical looping combustion 有权
标题翻译：固体燃料化学循环燃烧的装置和方法
公开(公告)号：US09004911B1
公开(公告)日：2015-04-14
申请号：US13688260
申请日：2012-11-29
申请人： Ranjani V. Siriwardane , Justin M. Weber
发明人： Ranjani V. Siriwardane , Justin M. Weber
IPC分类号： F23D3/40 , F23C10/01 , F23B30/00 , F23C13/08
CPC分类号： F23C10/01 , F23B7/00 , F23C13/08 , F23C2900/99008 , F23G2201/40 , F23G2201/50 , F23G2900/50202 , Y02E20/346
摘要： The disclosure provides an apparatus and method utilizing fuel reactor comprised of a fuel section, an oxygen carrier section, and a porous divider separating the fuel section and the oxygen carrier section. The porous divider allows fluid communication between the fuel section and the oxygen carrier section while preventing the migration of solids of a particular size. Maintaining particle segregation between the oxygen carrier section and the fuel section during solid fuel gasification and combustion processes allows gases generated in either section to participate in necessary reactions while greatly mitigating issues associated with mixture of the oxygen carrier with char or ash products. The apparatus and method may be utilized with an oxygen uncoupling oxygen carrier such as CuO, Mn3O4, or Co3O4, or utilized with a CO/H2 reducing oxygen carrier such as Fe2O3.
摘要翻译：本公开提供了一种使用燃料反应器的装置和方法，燃料反应器包括燃料部分，氧气载体部分和分离燃料部分和氧气载体部分的多孔分隔件。多孔分隔器允许燃料部分和氧气载体部分之间的流体连通，同时防止特定尺寸的固体的迁移。在固体燃料气化和燃烧过程中，保持氧气载体部分和燃料部分之间的颗粒偏析使得在任一部分产生的气体参与必要的反应，同时大大减轻与氧气载体与焦炭或灰分产物的混合相关的问题。该设备和方法可以与氧分解氧载体如CuO，Mn 3 O 4或Co 3 O 4一起使用，或与CO 2 / H 2还原氧载体如Fe 2 O 3一起使用。

5. 发明授权

US5866503A Durable regenerable sorbent pellets for removal of hydrogen sulfide coal gas 失效
标题翻译：用于去除硫化氢煤气的耐用可再生吸附剂颗粒
公开(公告)号：US5866503A
公开(公告)日：1999-02-02
申请号：US881783
申请日：1997-06-24
申请人： Ranjani V. Siriwardane
发明人： Ranjani V. Siriwardane
IPC分类号： B01D53/02 , B01J20/06 , B01J20/28 , B01J20/30 , C10K1/20 , C10K1/32 , B01J20/02
CPC分类号： B01J20/2803 , B01D53/02 , B01J20/06 , B01J20/28004 , B01J20/28014 , B01J20/30 , C10K1/20 , C10K1/32 , B01D2257/304 , Y10S502/501 , Y10S502/506 , Y10S502/517
摘要： Pellets for removing hydrogen sulfide from a coal gasification stream at an elevated temperature are prepared in durable form, usable over repeated cycles of absorption and regeneration. The pellets include a material reactive with hydrogen sulfide, in particular zinc oxide, a binder, and an inert material, in particular calcium sulfate (drierite), having a particle size substantially larger than other components of the pellets. A second inert material and a promoter may also be included. Preparation of the pellets may be carried out by dry, solid-state mixing of components, moistening the mixture, and agglomerating it into pellets, followed by drying and calcining. Pellet size is selected, depending on the type of reaction bed for which the pellets are intended. The use of inert material with a large particle size provides a stable pellet structure with increased porosity, enabling effective gas contact and prolonged mechanical durability.
摘要翻译：在高温下从煤气化流中除去硫化氢的颗粒以耐久的形式制备，可在重复的吸收和再生循环中使用。颗粒包括与硫化氢反应的材料，特别是氧化锌，粘合剂和惰性材料，特别是硫酸钙（水滑石）），其粒度基本上大于颗粒的其它组分。还可以包括第二惰性材料和促进剂。颗粒的制备可以通过组分的干燥，固态混合，润湿混合物，并将其团聚成粒料，然后干燥和煅烧来进行。选择颗粒尺寸，这取决于颗粒所用的反应床的类型。使用具有大粒径的惰性材料提供了稳定的颗粒结构，具有增加的孔隙率，使得有效的气体接触和延长的机械耐久性。

6. 发明授权

US09797594B1 Tri-metallic ferrite oxygen carriers for chemical looping combustion 有权
公开(公告)号：US09797594B1
公开(公告)日：2017-10-24
申请号：US14633175
申请日：2015-02-27
申请人： Ranjani V. Siriwardane , Yueying Fan
发明人： Ranjani V. Siriwardane , Yueying Fan
IPC分类号： F23C13/08 , F23C10/01 , F23C10/02 , F23C10/20
CPC分类号： F23C99/00 , B01J23/002 , B01J23/8892 , B01J35/023 , B01J2523/00 , F23C10/04 , F23C2900/99008 , Y02E20/346 , B01J2523/17 , B01J2523/72 , B01J2523/842
摘要： The disclosure provides a tri-metallic ferrite oxygen carrier for the chemical looping combustion of carbonaceous fuels. The tri-metallic ferrite oxygen carrier comprises CuxFeyMnzO4-δ, where CuxFeyMnzO4-δ is a chemical composition. Generally, 0.5≦x≦2.0, 0.2≦y≦2.5, and 0.2≦z≦2.5, and in some embodiments, 0.8≦x≦1.2, y≦1.2, and z≧0.8. The tri-metallic ferrite oxygen carrier may be used in various applications for the combustion of carbonaceous fuels, including as an oxygen carrier for chemical looping combustion.

7. 发明授权

US09523499B1 Regenerable mixed copper-iron-inert support oxygen carriers for solid fuel chemical looping combustion process 有权
标题翻译：用于固体燃料化学循环燃烧过程的可再生混合铜 - 铁惰性载体氧气载体
公开(公告)号：US09523499B1
公开(公告)日：2016-12-20
申请号：US13159553
申请日：2011-06-14
申请人： Ranjani V. Siriwardane , Hanjing Tian
发明人： Ranjani V. Siriwardane , Hanjing Tian
IPC分类号： F23C5/00 , F23M3/02 , F23D14/22 , F23D14/32
CPC分类号： F23D14/22 , F23C99/00 , F23C2900/99008 , F23D14/32 , Y02E20/344 , Y02E20/346
摘要： The disclosure provides an oxygen carrier for a chemical looping cycle, such as the chemical looping combustion of solid carbonaceous fuels, such as coal, coke, coal and biomass char, and the like. The oxygen carrier is comprised of at least 24 weight % (wt %) CuO, at least 10 wt % Fe2O3, and an inert support, and is typically a calcine. The oxygen carrier exhibits a CuO crystalline structure and an absence of iron oxide crystalline structures under XRD crystallography, and provides an improved and sustained combustion reactivity in the temperature range of 600° C.-1000° C. particularly for solid fuels such as carbon and coal.
摘要翻译：本公开提供了用于化学循环循环的氧载体，例如固体碳质燃料如煤，焦炭，煤和生物质炭等的化学循环燃烧。氧载体由至少24重量％（重量％）的CuO，至少10重量％的Fe 2 O 3和惰性载体组成，并且通常是煅烧物。氧载体在XRD晶体学下表现出CuO晶体结构和不存在氧化铁晶体结构，并且在600℃-1000℃的温度范围内提供了改进且持续的燃烧反应性，特别是对于固体燃料如碳和煤炭。

8. 发明授权

US08807988B2 Regenerable MgO promoted metal oxide oxygen carriers for chemical looping combustion 有权
标题翻译：可再生的MgO促进金属氧化物氧载体进行化学循环燃烧
公开(公告)号：US08807988B2
公开(公告)日：2014-08-19
申请号：US13477274
申请日：2012-05-22
申请人： Ranjani V. Siriwardane , Duane D. Miller
发明人： Ranjani V. Siriwardane , Duane D. Miller
IPC分类号： F23D3/40
CPC分类号： F23C13/08 , F23C2900/99008 , Y02E20/346
摘要： The disclosure provides an oxygen carrier comprised of a plurality of metal oxide particles in contact with a plurality of MgO promoter particles. The MgO promoter particles increase the reaction rate and oxygen utilization of the metal oxide when contacting with a gaseous hydrocarbon at a temperature greater than about 725° C. The promoted oxide solid is generally comprised of less than about 25 wt. % MgO, and may be prepared by physical mixing, incipient wetness impregnation, or other methods known in the art. The oxygen carrier exhibits a crystalline structure of the metal oxide and a crystalline structure of MgO under XRD crystallography, and retains these crystalline structures over subsequent redox cycles. In an embodiment, the metal oxide is Fe2O3, and the gaseous hydrocarbon is comprised of methane.
摘要翻译：本公开提供了由与多个MgO促进剂颗粒接触的多个金属氧化物颗粒构成的氧载体。当在大于约725℃的温度下与MgO气体烃接触时，MgO助催化剂颗粒增加了金属氧化物的反应速率和氧气利用率。促进的氧化物固体通常包含小于约25wt。％MgO，并且可以通过物理混合，初始润湿浸渍或本领域已知的其它方法制备。氧载体在XRD晶体学下表现出金属氧化物的结晶结构和MgO的结晶结构，并且在随后的氧化还原循环中保留这些晶体结构。在一个实施方案中，金属氧化物是Fe 2 O 3，并且气态烃由甲烷组成。

9. 发明授权

US10030204B1 Metal ferrite oxygen carriers for gasification of solid carbonaceous fuel 有权
公开(公告)号：US10030204B1
公开(公告)日：2018-07-24
申请号：US14870051
申请日：2015-09-30
申请人： Ranjani V. Siriwardane , Yueying Fan
发明人： Ranjani V. Siriwardane , Yueying Fan
IPC分类号： C10J3/46
摘要： The disclosure provides a metal ferrite oxygen carrier for the chemical looping combustion of solid carbonaceous fuels, such as coal, coke, coal and biomass char, and the like. The metal ferrite oxygen carrier comprises MFexOy, where MFexOy is a chemical composition with 1.5≤x≤2.5 and 3.5≤y≤4.5 and M is one of Ca, Ba, and combinations thereof. For example, MFexOy may be one of CaFe2O4, BaFe2O4, MgFe2O4. SrFe2O4 and combinations thereof. Mixing of the metal ferrite oxygen carrier and the solid carbonaceous fuel generates a product stream comprising at least 50 vol. % CO and H2. The MFexOy may be supported on an inert support. In an embodiment, the MFexOy comprises at least 30 wt. % of the metal ferrite oxygen carrier the inert support when present comprises from about 5 wt. % to about 60 wt. % of the metal ferrite oxygen carrier.

10. 发明授权

US08470276B1 Process for CO2 capture using a regenerable magnesium hydroxide sorbent 有权
标题翻译：使用可再生氢氧化镁吸附剂进行CO2捕集的方法
公开(公告)号：US08470276B1
公开(公告)日：2013-06-25
申请号：US12720766
申请日：2010-03-10
申请人： Ranjani V. Siriwardane , Robert W. Stevens, Jr.
发明人： Ranjani V. Siriwardane , Robert W. Stevens, Jr.
IPC分类号： B01D53/62 , B01D53/96
CPC分类号： B01D53/62 , B01D53/96 , B01D2251/402 , B01D2257/504 , C01B3/56 , C01B2203/043 , C01B2203/0475 , Y02C10/04 , Y02P20/152 , Y02P30/30
摘要： A process for CO2 separation using a regenerable Mg(OH)2 sorbent. The process absorbs CO2 through the formation of MgCO3 and releases water product H2O. The MgCO3 is partially regenerated through direct contact with steam, which acts to heat the magnesium carbonate to a higher temperature, provide heat duty required to decompose the magnesium carbonate to yield MgO and CO2, provide an H2O environment over the magnesium carbonate thereby shifting the equilibrium and increasing the potential for CO2 desorption, and supply H2O for rehydroxylation of a portion of the MgO. The mixture is polished in the absence of CO2 using water product H2O produced during the CO2 absorption to maintain sorbent capture capacity. The sorbent now comprised substantially of Mg(OH)2 is then available for further CO2 absorption duty in a cyclic process.
摘要翻译：使用可再生的Mg（OH）2吸附剂进行CO 2分离的方法。该过程通过形成MgCO3吸收二氧化碳并释放水产物H 2 O. MgCO3通过与蒸汽直接接触而部分地再生，其用于将碳酸镁加热到更高的温度，提供分解碳酸镁产生MgO和CO 2所需的热负荷，在碳酸镁上提供H 2 O环境，从而使平衡并增加二氧化碳解吸的潜力，并为一部分MgO的再羟化提供H 2 O。使用在CO2吸收期间产生的水产物H 2，在不存在CO 2的情况下对混合物进行抛光以保持吸附剂捕获能力。现在基本上由Mg（OH）2组成的吸附剂可用于循环过程中的进一步的CO 2吸收负荷。

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