公开(公告)号：US20080149227A1

公开(公告)日：2008-06-26

申请号：US11645447

申请日：2006-12-26

申请人： Karen Anne Connery ,  Robert Marcel De Wilde ,  Richard A. Novak ,  Simon Ho ,  Amitabh Gupta

发明人： Karen Anne Connery ,  Robert Marcel De Wilde ,  Richard A. Novak ,  Simon Ho ,  Amitabh Gupta

IPC分类号： C23C8/00

CPC分类号： C23C8/20

摘要： A method of oxygen-free heat treatment of a steel part in an atmospheric pressure furnace is disclosed. The present method employs an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The presently disclosed oxygen-free heat treatment process, preferably a carburization process, uses a precisely controlled atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite or other metallic carbides, and avoid hydrogen embrittlement.

摘要翻译： 公开了一种在大气压力炉中对钢部件进行无氧热处理的方法。 本方法采用无氧的可控气体气氛，包括浓度在约1.0％至10.0％之间的氢气，烃气体（如丙烯）的浓度在约0.1％至10.0％之间，其浓度随时间而变化， 气体气氛的平衡是氮气。 目前公开的无氧热处理方法，优选渗碳方法，使用精确控制的气氛以使颗粒间氧化最小化，消除烟灰和渗碳体或其它金属碳化物的形成，并避免氢脆化。

公开(公告)号：US20080149225A1

公开(公告)日：2008-06-26

申请号：US11959825

申请日：2008-02-14

申请人： Karen Anne Connery ,  Richard A. Novak ,  Simon Ho ,  Amitabh Gupta ,  Robert Marcel De Wilde

发明人： Karen Anne Connery ,  Richard A. Novak ,  Simon Ho ,  Amitabh Gupta ,  Robert Marcel De Wilde

IPC分类号： C23C8/20

CPC分类号： C23C8/20 ,  C21D1/74 ,  C21D1/76

摘要： A method of oxygen-free heat treatment of a steel part in an atmospheric pressure furnace is disclosed. The present batch treatment process employs an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The present continuous furnace treatment process employs a plurality of zones with each zone including an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent that varies across the different zones, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies across the different zones, with the balance of the gas atmosphere within each zone being nitrogen. The presently disclosed oxygen-free heat treatment processes, preferably carburization processes, use a precisely controlled atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite or other metallic carbides, and avoid hydrogen embrittlement.

摘要翻译： 公开了一种在大气压力炉中对钢部件进行无氧热处理的方法。 本批次处理方法采用无氧可控气体气氛，其中浓度为约1.0％至10.0％之间的氢气，烃类气体（如丙烯）的浓度为约0.1％至10.0％，其浓度为 时间，天然气气氛的平衡是氮气。 本连续炉处理方法采用多个区域，每个区域包括无氧的可控气体气氛，包括在不同区域之间变化的浓度在约1.0％至10.0％之间的氢气，烃气体如丙烯， 在不同区域之间变化的约0.1％和10.0％之间的浓度，每个区域内的气体气氛的平衡是氮气。 目前公开的无氧热处理方法，优选渗碳方法，使用精确控制的气氛以使颗粒间氧化最小化，消除烟灰和渗碳体或其它金属碳化物的形成，并避免氢脆化。

公开(公告)号：US20080149226A1

公开(公告)日：2008-06-26

申请号：US11645443

申请日：2006-12-26

申请人： Karen Anne Connery ,  Richard A. Novak ,  Simon Ho ,  Amitabh Gupta ,  Robert De Wilde

发明人： Karen Anne Connery ,  Richard A. Novak ,  Simon Ho ,  Amitabh Gupta ,  Robert De Wilde

IPC分类号： C23C8/00

CPC分类号： C23C8/32 ,  C21D1/76 ,  C23C8/22

摘要： A method of controlling an oxygen-free heat treating process in an atmospheric pressure furnace is disclosed. The present method employs an oxygen-free gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The presently disclosed oxygen-free carburization process uses a precisely controlled gas atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite, and avoid hydrogen embrittlement.

摘要翻译： 公开了一种在大气压力炉中控制无氧热处理工艺的方法。 本发明方法采用无氧气体气氛，其中浓度为约1.0％至10.0％之间的氢气，烃气体（例如丙烯）的浓度为约0.1％至10.0％，其浓度随时间而变化， 天然气气氛的平衡是氮气。 目前公开的无氧渗碳方法使用精确控制的气体气氛来最小化颗粒间氧化，消除烟灰和渗碳体的形成，并避免氢脆化。

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。

公开(公告)号：US07699980B2

公开(公告)日：2010-04-20

申请号：US12117785

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： C02F3/00

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 system is provided. The disclosed system includes: an uncovered activated sludge basin; a high purity oxygen aeration system; a secondary clarifier; a return activated sludge line and a waste activated sludge line; wherein the system operates at a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor; a dissolved oxygen level in the aeration basin in the range of between about 5 mg to 15 mg; 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系统。 所公开的系统包括：未被覆盖的活性污泥池; 高纯度氧气曝气系统; 次级澄清器 回收活性污泥生产线和废活性污泥生产线; 其中所述系统以每升混合液体约3000mg至约10000mg悬浮固体之间的固体负载运行; 在曝气池中的溶解氧水平在约5mg至15mg之间的范围内; 固体保留时间为约7天至40天。

公开(公告)号：US07699986B2

公开(公告)日：2010-04-20

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： C02F3/00

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。

公开(公告)号：US20090050552A1

公开(公告)日：2009-02-26

申请号：US12117785

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： C02F3/12

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 system is provided. The disclosed system includes: an uncovered activated sludge basin; a high purity oxygen aeration system; a secondary clarifier; a return activated sludge line and a waste activated sludge line; wherein the system operates at a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor; a dissolved oxygen level in the aeration basin in the range of between about 5 mg to 15 mg; 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系统。 所公开的系统包括：未被覆盖的活性污泥池; 高纯度氧气曝气系统; 次级澄清器 回收活性污泥生产线和废活性污泥生产线; 其中所述系统以每升混合液体约3000mg至约10000mg悬浮固体之间的固体负载运行; 在曝气池中的溶解氧水平在约5mg至15mg之间的范围内; 固体保留时间为约7天至40天。

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。

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。

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.