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1. 发明授权

US6165433A Carbon dioxide recovery with composite amine blends 有权
标题翻译：用复合胺混合物回收二氧化碳
公开(公告)号：US6165433A
公开(公告)日：2000-12-26
申请号：US329259
申请日：1999-06-10
申请人： Shrikar Chakravarti , Amitabh Gupta
发明人： Shrikar Chakravarti , Amitabh Gupta
IPC分类号： B01D53/62 , B01D53/14 , C01B32/50 , C01B31/20
CPC分类号： B01D53/1493 , B01D53/1475 , C01B32/50 , Y02C10/04 , Y02C10/06 , Y02P20/152
摘要： A method for recovering carbon dioxide by absorption of carbon dioxide from a gas stream into a composite recovery solvent comprising preferably a lesser concentration of one or more fast reaction rate amines and a greater concentration of one or more slow reaction rate amines.
摘要翻译：通过将二氧化碳从气流吸收到复合回收溶剂中来回收二氧化碳的方法，所述复合回收溶剂优选包含较低浓度的一种或多种快速反应速率胺和较大浓度的一种或多种缓慢反应速率的胺。

2. 发明授权

US06497852B2 Carbon dioxide recovery at high pressure 有权
标题翻译：高压二氧化碳回收
公开(公告)号：US06497852B2
公开(公告)日：2002-12-24
申请号：US09742451
申请日：2000-12-22
申请人： Shrikar Chakravarti , Amitabh Gupta
发明人： Shrikar Chakravarti , Amitabh Gupta
IPC分类号： B01D5362
CPC分类号： B01D53/1475 , B01D53/1418 , Y02C10/06
摘要： Carbon dioxide is recovered from a feed stream whose pressure is up to 30 psia by preferentially absorbing carbon dioxide from said feed stream into a liquid absorbent fluid, pressurizing and heating the resulting stream to a pressure sufficient to enable the stream to reach the top of the stripper at a pressure of 35 psia or greater, and stripping carbon dioxide from said stream in a stripper operating at a pressure of 35 psia or greater and recovering from said stripper a gaseous carbon dioxide product stream having a pressure of 35 psia or greater.
摘要翻译：从压力高达30psia的进料流中回收二氧化碳，优先将二氧化碳从所述进料流中吸收到液体吸收剂流体中，将所得流加压和加热到足以使流体到达顶部的压力汽提器，压力为35psia或更大，并且在35psia或更大的压力下在汽提器中从所述物流中汽提二氧化碳，并从所述汽提器中回收压力为35psia或更大的气态二氧化碳产物流。

3. 发明申请

US20070148070A1 Production of moderate purity carbon dioxide streams 审中-公开
标题翻译：生产中等纯度二氧化碳流
公开(公告)号：US20070148070A1
公开(公告)日：2007-06-28
申请号：US11315065
申请日：2005-12-23
申请人： Shrikar Chakravarti , Amitabh Gupta , Kenneth Burgers
发明人： Shrikar Chakravarti , Amitabh Gupta , Kenneth Burgers
IPC分类号： B01D53/14
CPC分类号： B01D53/1456 , Y02C10/06
摘要： A gaseous product stream having a predetermined carbon dioxide content of 10-95 mol. % is produced from a gaseous feed stream containing 3-20 mol. % carbon dioxide by converting a portion of the feed stream to a purified stream containing 95-99.9 mol. % (dry basis) carbon dioxide and adding the purified stream to the remaining portion of the feed stream. Alternately, a portion of the purified stream is stored and added subsequently in response to fluctuating demand for the product stream.
摘要翻译：具有10-95mol的预定二氧化碳含量的气态产物流。％由含有3-20mol的气态进料流产生。通过将一部分进料流转化成含有95-99.9mol的纯化物流来生成二氧化碳。％（干基）二氧化碳，并将纯化的流加入进料流的剩余部分。或者，一部分纯化的流被储存并随后响应于产品流的波动需求而添加。

4. 发明申请

US20070148069A1 Carbon dioxide recovery from flue gas and the like 审中-公开
标题翻译：从废气中回收二氧化碳等
公开(公告)号：US20070148069A1
公开(公告)日：2007-06-28
申请号：US11315019
申请日：2005-12-23
申请人： Shrikar Chakravarti , Kenneth Burgers , Amitabh Gupta , William Williams
发明人： Shrikar Chakravarti , Kenneth Burgers , Amitabh Gupta , William Williams
IPC分类号： B01D53/14
CPC分类号： B01D53/1493 , B01D53/1475 , C01B32/50 , Y02C10/06 , Y02P20/152
摘要： Carbon dioxide is recovered in concentrated form from a gas feed stream also containing oxygen by absorbing carbon dioxide and oxygen into an amine solution that also contains another organic component, removing oxygen, and recovering carbon dioxide from the absorbent.
摘要翻译：通过将二氧化碳和氧气吸收到还含有另一种有机成分，除去氧气和从吸收剂中回收二氧化碳的胺溶液中，还从含氧气体的气体进料流中浓缩回收二氧化碳。

5. 发明授权

US6146603A System for recovering carbon dioxide from a lean feed 有权
标题翻译：从稀饲料回收二氧化碳的系统
公开(公告)号：US6146603A
公开(公告)日：2000-11-14
申请号：US329278
申请日：1999-06-10
申请人： Shrikar Chakravarti , Amitabh Gupta
发明人： Shrikar Chakravarti , Amitabh Gupta
IPC分类号： B01D53/34 , B01D19/00 , B01D53/14 , B01D53/50 , B01D53/52 , B01D53/62 , B01D53/77 , B01J20/22 , B01J20/34 , C01B32/50
CPC分类号： B01D53/1493 , B01D53/1418 , B01D53/1475 , Y02C10/06
摘要： A system for recovering absorbate such as carbon dioxide using an alkanolamine absorbent fluid, wherein the loaded absorbent is heated in a two step heating procedure prior to the separation of the absorbate from the absorbent, and wherein the loaded absorbent is deoxygenated after the first heating step and prior to the second heating step.
摘要翻译：一种使用链烷醇胺吸收剂流体回收吸收剂如二氧化碳的系统，其中在将吸收物质与吸收剂分离之前，加载的吸收剂在两步加热过程中被加热，并且其中负载的吸收剂在第一加热步骤之后脱氧并且在第二加热步骤之前。

6. 发明授权

US06592829B2 Carbon dioxide recovery plant 有权
标题翻译：二氧化碳回收厂
公开(公告)号：US06592829B2
公开(公告)日：2003-07-15
申请号：US09774031
申请日：2001-01-31
申请人： Shrikar Chakravarti , Amitabh Gupta
发明人： Shrikar Chakravarti , Amitabh Gupta
IPC分类号： B01D5360
CPC分类号： B01D53/62 , B01D53/1418 , B01D53/1475 , B01D2257/504 , C01B32/50 , Y02C10/04 , Y02C10/06 , Y02P20/152
摘要： A system for recovering absorbate such as carbon dioxide from an oxygen containing mixture wherein carbon dioxide is concentrated in an alkanolamine containing absorption fluid, oxygen is separated from the absorption fluid, the resulting fluid is heated, and carbon dioxide is steam stripped from the absorption fluid and recovered.
摘要翻译：从含氧混合物中回收吸收剂如二氧化碳的系统，其中二氧化碳浓缩在含有链烷醇胺的吸收流体中，氧从吸收流体中分离出来，所得流体被加热，二氧化碳从吸收流体中蒸汽汽提并恢复。

7. 发明授权

US06174506B1 Carbon dioxide recovery from an oxygen containing mixture 有权
标题翻译：从含氧混合物中回收二氧化碳
公开(公告)号：US06174506B1
公开(公告)日：2001-01-16
申请号：US09329279
申请日：1999-06-10
申请人： Shrikar Chakravarti , Amitabh Gupta
发明人： Shrikar Chakravarti , Amitabh Gupta
IPC分类号： B01D5362
CPC分类号： B01D53/1418 , C01B32/50 , Y02C10/04 , Y02C10/06 , Y02P20/152
摘要： A process for recovering carbon dioxide from a gas containing both carbon dioxide and oxygen wherein a carbon dioxide and oxygen containing gas is first contacted with an alkanolamine solution to produce an alkanolamine loaded with carbon dioxide and oxygen, the oxygen is separated from the absorption solution, such as by stripping with a scavenging gas, such as the carbon dioxide containing fluid obtained from the separation of carbon dioxide from the alkanolamine solution or nitrogen, prior to any heating of the absorption solution, and carbon dioxide is steam stripped from the absorption solution and recovered. By stripping the oxygen out of the alkanolamine solution, oxidative degradation of the alkanolamine can be reduced.
摘要翻译：一种从含有二氧化碳和氧气的二氧化碳中回收二氧化碳的方法，其中首先使二氧化碳和含氧气体与链烷醇胺溶液接触以产生负载有二氧化碳和氧气的链烷醇胺，将氧与吸收溶液分离，例如在吸收溶液的任何加热之前通过用清除气体例如含有二氧化碳的流体从链烷醇胺溶液或氮气中分离出二氧化碳的流体汽提，并且二氧化碳是从吸收溶液中汽提的，恢复。通过从烷醇胺溶液中除去氧气，可以降低链烷醇胺的氧化降解。

8. 发明申请

US20090050562A1 METHOD FOR ACTIVATED SLUDGE WASTEWATER TREATMENT WITH HIGH DISSOLVED OXYGEN LEVELS 失效
标题翻译：高分解氧化水平活性污泥废水处理方法
公开(公告)号：US20090050562A1
公开(公告)日：2009-02-26
申请号：US12117791
申请日：2008-05-09
申请人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
发明人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
IPC分类号： C02F3/26
CPC分类号： C02F3/12 , B01F3/04609 , B01F13/0049 , C02F3/16 , C02F3/206 , C02F3/26 , C02F2209/001 , C02F2209/10 , C02F2209/22 , Y02W10/15
摘要： An activated sludge wastewater treatment method is provided. The disclosed method includes: receiving a stream of wastewater into a mixed liquor in an uncovered activated sludge basin; introducing high purity oxygen to the mixed liquor in the activated sludge basin to produce euoxic conditions (i.e. a dissolved oxygen level in the range of between about 5 mg to 15 mg) in the activated sludge basin; passing a portion of the mixed liquor in the activated sludge basin through a clarifier to separate activated sludge and produce an effluent stream and an activated sludge stream; and recycling a portion of the activated sludge stream to the activated sludge basin to produce a mixed liquor having a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor and a solids retention time of between about 7 days and 40 days.
摘要翻译：提供了一种活性污泥废水处理方法。所公开的方法包括：将废水流接收到未覆盖的活性污泥池中的混合液中; 向活性污泥池中的混合液中引入高纯度的氧气，以产生活性污泥池中的无氧条件（即溶解氧水平在约5mg至15mg之间）; 将活性污泥池中的一部分混合液通过澄清器分离出活性污泥并产生流出物流和活性污泥流; 并将活性污泥流的一部分再循环到活性污泥池中以产生每升混合液体的固体负载量为约3000mg至约10000mg悬浮固体和约7天之间的固体保留时间的混合液和40天。

9. 发明授权

US09181521B2 Bioreactor with upward flowing impeller system for use in a mammalian cell culture process 有权
标题翻译：具有向上流动的叶轮系统的生物反应器用于哺乳动物细胞培养过程
公开(公告)号：US09181521B2
公开(公告)日：2015-11-10
申请号：US13559957
申请日：2012-07-27
申请人： Alan T. Y. Cheng , Ying Zhou , Amitabh Gupta , Balazs Hunek , Nigel Grinter
发明人： Alan T. Y. Cheng , Ying Zhou , Amitabh Gupta , Balazs Hunek , Nigel Grinter
IPC分类号： C12M1/06 , C12M1/00 , C12N1/38 , C12M1/08 , C12M1/34 , C12M1/36
CPC分类号： C12M27/20 , C12M27/02 , C12M27/24 , C12M29/06 , C12M41/12 , C12M41/26 , C12M41/32 , C12M41/48 , C12N1/38
摘要： A bioreactor with an upward flowing impeller system for controlling a mammalian cell culture process is provided. The disclosed system enables control of the cell culture process by controlling the level of dissolved carbon dioxide in the cell culture media and prevent increases in the osmolality level is achieved by enhanced stripping of carbon dioxide via surface gas exchange with little or no damage to the mammalian cells. The use of an upward flow impeller combined with vertical baffles converts the swirling motions of the cell culture media into a largely vertical flow and promotes the removal of dissolved carbon dioxide via surface gas exchange with a sweep gas flowing over the top surface of the cell culture media within the bioreactor vessel.
摘要翻译：提供了一种具有向上流动的叶轮系统用于控制哺乳动物细胞培养过程的生物反应器。所公开的系统能够通过控制细胞培养基中溶解的二氧化碳的水平来控制细胞培养过程，并且通过经由表面气体交换增强汽提二氧化碳来实现渗透压浓度的增加，对哺乳动物几乎没有或没有损伤细胞。使用与垂直挡板结合的向上流动叶轮将细胞培养基的旋转运动转化为大体垂直的流动，并通过与流过细胞培养物顶表面的吹扫气体的表面气体交换促进去除溶解的二氧化碳生物反应器容器内的介质。

10. 发明授权

US06669916B2 Method and apparatus for purifying carbon dioxide feed streams 有权
公开(公告)号：US06669916B2
公开(公告)日：2003-12-30
申请号：US09780539
申请日：2001-02-12
申请人： Carl Joseph Heim , Amitabh Gupta
发明人： Carl Joseph Heim , Amitabh Gupta
IPC分类号： B01D5372
CPC分类号： B01D53/04 , B01D53/864 , B01D2253/102 , B01D2256/22 , B01D2257/702 , B01D2259/402 , Y02C10/08
摘要： Disclosed are a carbon dioxide purification process and apparatus including (i) an adsorbing step for removing a predetermined amount of hydrocarbons from a carbon dioxide feed gas to reduce the caloric value of the feed stream, and (ii) a catalytic oxidation step located downstream of the adsorbing step for removing residual hydrocarbons from the feed gas by catalytic oxidation.

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