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1. 发明专利

JP2001025628A SYSTEM FOR RECOVERING CARBON DIOXIDE FROM LEAN FUEL 失效
公开(公告)号：JP2001025628A
公开(公告)日：2001-01-30
申请号：JP2000173403
申请日：2000-06-09
申请人： PRAXAIR TECHNOLOGY INC
发明人： CHAKRAVARTI SHRIKAR , GUPTA AMITABH
IPC分类号： B01D53/34 , B01D19/00 , B01D53/14 , B01D53/50 , B01D53/52 , B01D53/62 , B01D53/77 , B01J20/22 , B01J20/34 , C01B32/50 , C01B31/20
摘要： PROBLEM TO BE SOLVED: To provide a system capable of still more effectively recovering carbon dioxide and other substance to be adsorbed from an oxygen-containing fed substance by using an alkanolamine based adsorbent for enhancing the grade of the fed substance. SOLUTION: Lean fed gas 1 is sent to a blower 2 to be compressed and this compressed lean fed gas 3 is sent to the lower part of an adsorption tower 4 from the blower 2. An adsorbent 6 is a fluid containing at least one alkanolamine species being primary or secondary alkanolamine and the lean fed gas rises against the flowing-down adsorbing material in the adsorption tower 6. As the lean fed gas rises, almost all of carbon dioxide and a small amt. of other substance to be adsorbed in the gas are adsorbed by the flowing- down adsorbent and vapor reduced in the content of carbon dioxide is collected at the upper position of the adsorption tower 6 and the adsorbent loaded with carbon dioxide containing dissolved oxygen is collected at the bottom position thereof.

2. 发明专利

JP2001019416A RECOVERING METHOD OF CARBON DIOXIDE FROM OXYGEN- CONTAINING MIXTURE AND DEVICE THEREFOR 失效
公开(公告)号：JP2001019416A
公开(公告)日：2001-01-23
申请号：JP2000173343
申请日：2000-06-09
申请人： PRAXAIR TECHNOLOGY INC
发明人： CHAKRAVARTI SHRIKAR , GUPTA AMITABH
IPC分类号： C01B32/50 , B01D53/14 , C01B31/20
摘要： PROBLEM TO BE SOLVED: To effectively recover carbon dioxide by passing an O2 and CO2- containing material mixture through an absorbent containing an alkanol amine to be in contact counter currently to absorb O2 and CO2 and after separating O2 from the CO2-loaded absorbent, getting a high concentration CO2-containing fluid by heating. SOLUTION: The compressed feed material gaseous mixture 3 is sent to the bottom of an absorption column 4 with 40-50 deg.C in the upper part and 50-60 deg.C in the lower part, by a blower 2. The absorbent flow 6, which is a 5-80 wt.% aq. solution of monoethanol amine, or the like, is brought into counter currently contact. The O2 and CO2 loaded absorbent in a flow 7 is brought into counter currently contact with an oxygen removing gas in an oxygen stripping column 151 to be reduced in O2 content into

3. 发明专利

JP2011160802A METHOD FOR CONTROLLING pH, OSMOLALITY AND DISSOLVED CARBON DIOXIDE LEVEL IN MAMMALIAN CELL CULTURE PROCESS TO ENHANCE CELL VIABILITY AND BIOLOGIC PRODUCT YIELD. 审中-公开
标题翻译：用于控制马来西亚细胞培养过程中pH，OSMALALITY和溶解二氧化碳水平的方法，以增强细胞毒性和生物产物含量。
公开(公告)号：JP2011160802A
公开(公告)日：2011-08-25
申请号：JP2011012943
申请日：2011-01-25
申请人： Praxair Technology Inc , プラクスエア・テクノロジー・インコーポレイテッド
发明人： CHENG ALAN T Y , ZHOU YING , GUPTA AMITABH , HUNEK BALAZS , GRINTER NIGEL
IPC分类号： C12N5/10 , C12P21/02
CPC分类号： C12N5/0018 , C12N1/38 , C12N2500/02 , C12N2500/60
摘要： PROBLEM TO BE SOLVED: To provide methods for controlling the level of dissolved carbon dioxide and limiting the osmolality in a mammalian cell culture process to enhance cell growth, viability and density, and increase biologic product concentration and yield. SOLUTION: The control of the dissolved carbon dioxide level and pH, as well as the resulting ability to limit osmolality in a mammalian cell culture process are achieved by adopting alternative pH control strategies and CO 2 stripping techniques during a mammalian cell culture process. Such pH control techniques and carbon dioxide stripping are carried out without generating foam and with little or no damage to the mammalian cells. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供控制哺乳动物细胞培养过程中溶解二氧化碳水平和限制渗透压的方法，以增强细胞生长，活力和密度，并提高生物产物浓度和产量。解决方案：通过采用替代的pH控制策略和CO 2 剥离来实现对哺乳动物细胞培养过程中溶解的二氧化碳水平和pH的控制以及所产生的限制渗透压的能力。哺乳动物细胞培养过程中的技术。这样的pH控制技术和二氧化碳汽提是在不产生泡沫的情况下进行的，对哺乳动物细胞几乎没有或没有损伤。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2002241119A RECOVERY OF CARBON DIOXIDE UNDER HIGH PRESSURE 审中-公开
公开(公告)号：JP2002241119A
公开(公告)日：2002-08-28
申请号：JP2001387330
申请日：2001-12-20
申请人： PRAXAIR TECHNOLOGY INC
发明人： CHAKRAVARTI SHRIKAR , GUPTA AMITABH
IPC分类号： B01D19/00 , B01D3/00 , B01D53/14 , C01B32/50 , C01B31/20
摘要： PROBLEM TO BE SOLVED: To provide an efficient method for recovering carbon dioxide of high pressure directly from a low-pressure feed stream. SOLUTION: The feed stream 1 is brought into contact with a liquid absorbent fluid in an absorber for recovering carbon dioxide. The carbon dioxide in a gaseous feed stream 1 is absorbed preferentially by the absorbent in the liquid absorbent fluid to generate a liquid absorbent stream 7 rich in carbon dioxide. The stream 7 is withdrawn from the bottom of the absorber 4 and sent to a rich solvent pump 8. The stream 7 is compressed by the pump 8 to have 0.241325 MPa (35 psia) or higher absolute pressure enough for the stream 7 to reach to the top of a stripping apparatus 12.

5. 发明专利

JP2001025627A RECOVERY OF CARBON DIOXIDE USING COMPOSITE AMINE BLEND 失效
公开(公告)号：JP2001025627A
公开(公告)日：2001-01-30
申请号：JP2000173353
申请日：2000-06-09
申请人： PRAXAIR TECHNOLOGY INC
发明人： CHAKRAVARTI SHRIKAR , GUPTA AMITABH
IPC分类号： B01D53/62 , B01D53/14 , C01B32/50 , C01B31/20
摘要： PROBLEM TO BE SOLVED: To recover carbon dioxide without adding an inhibitor, in recovering carbon dioxide from air by absorption of the same with a recovery solvent based on an amine, by separating carbon dioxide from a carbon dioxide absorbing/recovering solvent to form a fluid rich in carbon dioxide to recover the same. SOLUTION: Supplied air 1 is raised in its pressure by a compressor or blower 2 to be passed through an absorbing tower 4 from the lower part thereof and, when this air rises through a recovery solvent 6 based on an amine, carbon dioxide in the supplied air is absorbed by the recovery solvent 6. Thereafter, carbon dioxide excluding vapor is gathered to the top part of the tower 4 while the carbon dioxide absorbing recovery solvent is gathered to the bottom part of the tower 4 and both of them are drawn out to the outside. The drawn-out carbon dioxide absorbing recovery solvent is next guided to a heat exchanger 10 by a liquid pump 8 and heated to be passed through the upper part of a stripping tower 12 to be separated into top part vapor rich in carbon dioxide and the remaining amine recovery solvent and both of them are recovered by separate routes.

6. 发明申请

WO2008083033A3 METHOD FOR OXYGEN FREE CARBURIZATION IN ATMOSPHERIC PRESSURE FURNACES 审中-公开
标题翻译：大气压力炉中无氧自由化的方法
公开(公告)号：WO2008083033A3
公开(公告)日：2008-10-09
申请号：PCT/US2007088358
申请日：2007-12-20
申请人： PRAXAIR TECHNOLOGY INC , CONNERY KAREN ANNE , NOVAK RICHARD A , HO SIMON , GUPTA AMITABH , DE WILDE ROBERT MARCEL
发明人： CONNERY KAREN ANNE , NOVAK RICHARD A , HO SIMON , GUPTA AMITABH , DE WILDE ROBERT MARCEL
IPC分类号： C21D1/06 , C21D1/76 , C23C8/22 , C23C8/32
CPC分类号： C23C8/22 , C21D1/76 , C21D9/67 , C23C8/32 , F27B5/04 , F27B17/0016 , F27D7/02 , F27D7/06
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。

7. 发明专利

ES2390386T3 Método para tratamiento de aguas residuales por medio de lodos activados con niveles de oxígeno disuelto altos 未知
公开(公告)号：ES2390386T3
公开(公告)日：2012-11-12
申请号：ES08756378
申请日：2008-05-28
申请人： PRAXAIR TECHNOLOGY INC
发明人： NOVAK RICHARD , FABIYI MALCOLM , GUPTA AMITABH
IPC分类号： C02F3/20 , C02F3/12 , C02F3/16 , C02F3/26
摘要： Un método para tratar agua residual que comprende las etapas de: recibir una corriente de agua residual en un licor mixto en una cuenca de lodo activado no cubierta; introducir oxígeno de alta pureza en el licor mixto en la cuenca de lodo activado no cubierta para producir y mantener un nivel de oxígeno disuelto en el intervalo por encima de 5 mg hasta 15 mg de oxígeno por litro de licor mixto en la cuenca de lodo activado no cubierta; retirar una porción del licor mixto en la cuenca de lodo activado no cubierta a un clarificador y separar el lodo del licor mixto en el clarificador para producir una corriente de efluente y una corriente de lodo activado y reciclar una porción de la corriente de lodo activado a la cuenca de lodo activado no cubierta para producir un licor mixto con un tiempo de retención de sólidos mayor que 12 días.

8. 发明专利

DE60038409T2 未知
公开(公告)号：DE60038409T2
公开(公告)日：2009-04-16
申请号：DE60038409
申请日：2000-06-09
申请人： PRAXAIR TECHNOLOGY INC
发明人： CHAKRAVARTI SHRIKAR , GUPTA AMITABH
IPC分类号： C01B32/50 , B01D53/14
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, and carbon dioxide is steam stripped from the absorption fluid and recovered.

9. 发明专利

CA2697365A1 SYSTEM FOR ACTIVATED SLUDGE WASTEWATER TREATMENT WITH HIGH DISSOLVED OXYGEN LEVELS 未知
公开(公告)号：CA2697365A1
公开(公告)日：2009-03-05
申请号：CA2697365
申请日：2008-05-28
申请人： PRAXAIR TECHNOLOGY INC
发明人： NOVAK RICHARD A , FABIYI MALCOLM , GUPTA AMITABH
IPC分类号： C02F3/26 , C02F3/12
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.

10. 发明专利

IN1260DE2001A Recovery of carbon dioxide at high pressure 未知
公开(公告)号：IN1260DE2001A
公开(公告)日：2006-12-29
申请号：IN1260DE2001
申请日：2001-12-20
申请人： PRAXAIR TECHNOLOGY INC
发明人： CHAKRAVARTI SHRIKAR , GUPTA AMITABH
IPC分类号： B01D19/00 , B01D3/00 , B01D53/14 , C01B32/50
摘要： Disclosed is process for recovering carbon dioxide, comprising (A) providing a gaseous feed stream comprising carbon dioxide, wherein the pressure of said feed stream is up to 30 psia; (B) preferentially absorbing carbon dioxide from said feed stream into a liquid absorbent fluid to form a carbon dioxide enriched liquid absorbent stream; (C) in any sequence or simultaneously, pressurizing said carbon dioxide enriched liquid absorbent 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 heating the carbon dioxide enriched liquid absorbent stream to obtain a heated carbon dioxide enriched liquid absorbent stream; and (D) stripping carbon dioxide from said carbon dioxide enriched liquid absorbent 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. In another aspect of this process, the stripped liquid absorbent fluid from the stripper is recycled to step (B).

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