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81. 发明授权

US5682767A Argon production 失效
标题翻译：氩气生产
公开(公告)号：US5682767A
公开(公告)日：1997-11-04
申请号：US751913
申请日：1996-11-18
申请人： Francois De Bussy , Jean-Pierre Tranier
发明人： Francois De Bussy , Jean-Pierre Tranier
IPC分类号： F25J3/04
CPC分类号： F25J3/04703 , F25J3/04412 , F25J3/04678 , F25J3/04709 , F25J3/048 , F25J2200/20 , F25J2235/58 , F25J2240/40 , Y10S62/924
摘要： A process and system for producing an argon-enriched stream comprising a multiple column air separation system, a first crude argon column, and a second crude argon column is provided. The improved process involves removing a vapor stream from the upper portion of the first argon column; reducing the pressure of the vapor in a pressure reducing device; and then flowing the reduced pressure vapor to a second argon column which operates at a lower operating pressure relative to the first argon column.
摘要翻译：提供了一种用于生产包含多塔空气分离系统，第一粗氩塔和第二粗氩塔的富氩流的方法和系统。改进的方法包括从第一氩塔的上部去除蒸汽流; 降低减压装置中蒸汽的压力; 然后将减压蒸汽流入相对于第一氩塔在较低工作压力下操作的第二氩塔。

82. 发明授权

US5635541A Elevated pressure air separation unit for remote gas process 失效
标题翻译：用于远程气体处理的高压空气分离单元
公开(公告)号：US5635541A
公开(公告)日：1997-06-03
申请号：US489398
申请日：1995-06-12
申请人： Arthur R. Smith , John L. Dillon, IV , Donald W. Woodward
发明人： Arthur R. Smith , John L. Dillon, IV , Donald W. Woodward
IPC分类号： C01B3/36 , C01B13/02 , C01B21/04 , C07C1/04 , C07C2/82 , F25J3/04 , C07C27/06
CPC分类号： C01B21/0433 , C01B13/0248 , C01B3/36 , C07C1/0485 , C07C2/82 , F25J3/04018 , F25J3/04036 , F25J3/0409 , F25J3/04121 , F25J3/04539 , F25J3/04563 , F25J3/04581 , F25J3/04612 , C01B2210/0046 , F25J2200/20 , F25J2205/34 , F25J2260/44
摘要： The present invention is an improvement to a process for the conversion of natural gas to produce higher molecular weight hydrocarbon products, wherein the natural gas is partially oxidized to produce a synthesis gas comprising carbon monoxide and hydrogen, wherein the synthesis gas is catalytically reacted to produce the higher molecular weight hydrocarbon products, wherein the conversion process generates excess steam and wherein oxygen used to partially oxidize the natural gas is produced by an air separation process. The improvement is characterized by operating such air separation process at an elevated pressure so that the feed air to the air separation process is compressed to between 8 and 20 Bar(a); expanding at least a portion of the excess steam generated by the conversion process to generate work and using at least a portion of the generated work to drive the compression requirements of the air separation process.
摘要翻译：本发明是对天然气转化生产较高分子量烃产物的方法的改进，其中天然气被部分氧化以产生包含一氧化碳和氢的合成气，其中合成气被催化反应以产生较高分子量的烃产物，其中转化过程产生过量的蒸汽，并且其中用于部分氧化天然气的氧气通过空气分离过程产生。改进的特征在于在升高的压力下操作这种空气分离过程，使得空气分离过程的进料空气被压缩至8至20巴（a）; 膨胀由转化过程产生的过量蒸汽的至少一部分以产生工作并且使用至少一部分所产生的工件来驱动空气分离过程的压缩要求。

83. 发明授权

US5609041A Air separation 失效
标题翻译：空气分离
公开(公告)号：US5609041A
公开(公告)日：1997-03-11
申请号：US572230
申请日：1995-12-13
申请人： Thomas Rathbone , Brian A. Keenan
发明人： Thomas Rathbone , Brian A. Keenan
IPC分类号： F25J3/04 , F25J3/00
CPC分类号： F25J3/04169 , F25J3/04018 , F25J3/0409 , F25J3/04127 , F25J3/04303 , F25J3/04448 , F25J3/04545 , F25J3/04575 , F25J3/04606 , F25J2200/20 , F25J2200/50 , F25J2200/54 , F25J2200/90 , F25J2205/62 , F25J2240/42 , F25J2245/40
摘要： A first flow of air is compressed in a first air compressor associated with a gas turbine and is purified in an adsorptive purification unit which separates water vapour and carbon dioxide from the air. The purified first flow of air is further compressed to a pressure at least 5 bar higher than that at which it is purified in a second air compressor whose outlet pressure is independent of fluctuations in the power output of the gas turbine, is cooled in a main heat exchanger, is passed through an expansion valve, and is introduced into a higher pressure rectification column. A second flow of air is compressed in a third air compressor which is independent of the gas turbine. The compressed second flow of air is purified in an adsorptive purification unit by the separation of water vapour and carbon dioxide therefrom. The purified second flow of air is cooled in the main heat exchanger and is introduced into the higher pressure rectification column. The air flows are rectified in the higher pressure rectification column and an associated lower pressure rectification column operating at pressures above 2 bar. A nitrogen product is withdrawn from the top of the lower pressure rectification column and a liquid oxygen product from the bottom thereof. The liquid oxygen is revised in pressure to at least 25 bar by a pump and is warmed to ambient temperature in the main heat exchanger.
摘要翻译：第一空气流在与燃气轮机相关联的第一空气压缩机中被压缩，并且在从空气中分离水蒸气和二氧化碳的吸附净化单元中被净化。净化的第一空气流进一步被压缩至比第二空气压缩机净化出的压力高至少5巴的压力，其第二空气压缩机的出口压力与燃气轮机功率输出的波动无关，主要被冷却热交换器通过膨胀阀，并被引入高压精馏塔。第二空气流在与燃气轮机独立的第三空气压缩机中被压缩。通过从其中分离水蒸汽和二氧化碳，在吸附净化单元中净化压缩的第二空气流。净化的第二次空气在主热交换器中被冷却并被引入高压精馏塔。空气流在高压精馏塔和在2巴以上的压力下运行的相关的低压精馏塔进行整流。从低压精馏塔的顶部和底部的液氧产物中取出氮气产物。液体氧通过泵在压力下修正至至少25巴，并在主热交换器中升温至环境温度。

84. 发明授权

US5515688A Process and installation for the production of oxygen and/or nitrogen under pressure 失效
标题翻译：在压力下生产氧气和/或氮气的过程和安装
公开(公告)号：US5515688A
公开(公告)日：1996-05-14
申请号：US431851
申请日：1995-05-01
申请人： Norbert Rieth
发明人： Norbert Rieth
IPC分类号： F25J3/04 , F25J3/02
CPC分类号： F25J3/04315 , F25J3/0409 , F25J3/04303 , F25J3/04393 , F25J3/04412 , F25J2200/20 , F25J2205/02 , Y10S62/913
摘要： Process and installation for the production of gaseous oxygen and/or gaseous nitrogen under pressure, of the type in which the air is distilled in a double distillation column (10) comprising a low pressure column (12) operating under a low pressure, and a medium pressure column (11) operating under a medium pressure. All the air to be distilled is compressed (in 1,4) to at least one high pressure of air substantially greater than the medium pressure, and the compressed air is cooled to an intermediate temperature. A portion of it is expanded in a turbine (5) to the medium pressure, before introducing it into the medium pressure column (11). The non-work-expanded air is liquified, then introduced after expansion (in 19, 20), into the double column; and at least one liquid product withdrawn from the double column is brought to the production pressure, and this liquid product is vaporized by heat exchange with the air. The low pressure column (12) is operated under pressure; and the residual gas from the head of the low pressure column is expanded in the second turbine (8) after having been partially reheated. The low pressure column (12) is operated under a pressure of about 1.7 to 5 bars, and the medium pressure column (11) under a pressure of about 6.5 to 16 bars.
摘要翻译：在压力下生产气态氧气和/或氮气的方法和装置，其中空气在包括在低压下运行的低压塔（12）的双蒸馏塔（10）中蒸馏，中压塔（11）在中压下运行。待蒸馏的所有空气被压缩（1,4）至至少一个高于中压的高压空气，并将压缩空气冷却至中间温度。在涡轮机（5）中将其一部分在将其引入中压塔（11）之前膨胀至中压。非工作膨胀空气液化，然后在膨胀后（19,20）引入双塔; 并且从双塔排出的至少一种液体产物达到生产压力，并且该液体产物通过与空气的热交换而汽化。低压塔（12）在压力下运行; 并且在部分再加热之后，来自低压塔的头部的残留气体在第二涡轮机（8）中膨胀。低压塔（12）在约1.7至5巴的压力下操作，中压塔（11）在约6.5至16巴的压力下操作。

85. 发明授权

US5309721A Air separation 失效
标题翻译：空气分离
公开(公告)号：US5309721A
公开(公告)日：1994-05-10
申请号：US43426
申请日：1993-04-06
申请人： Thomas Rathbone
发明人： Thomas Rathbone
IPC分类号： F25J3/04 , F25J3/02
CPC分类号： F25J3/04315 , F25J3/04193 , F25J3/04393 , F25J3/04412 , F25J3/04557 , F25J3/046 , F25J3/04903 , F25J2200/20 , F25J2205/02 , F25J2230/42 , F25J2240/80 , F25J2245/42 , F25J2250/42 , F25J2250/52
摘要： An improvement to a gaseous oxygen cycle in which refrigeration is provided by two expansion turbines each fed with nitrogen. In addition, some nitrogen is recompressed, returned though the main heat exchanger, condensed and used to form a liquid nitrogen product.
摘要翻译：气态氧循环的改进，其中每个供给氮气的两个膨胀涡轮机提供制冷。此外，一些氮气被再压缩，通过主热交换器返回，冷凝并用于形成液氮产物。

86. 发明授权

US5257504A Multiple reboiler, double column, elevated pressure air separation cycles and their integration with gas turbines 失效
标题翻译：多重再沸器，双柱，高压空气分离循环及其与燃气轮机的集成
公开(公告)号：US5257504A
公开(公告)日：1993-11-02
申请号：US837786
申请日：1992-02-18
申请人： Rakesh Agrawal , Jianguo Xu
发明人： Rakesh Agrawal , Jianguo Xu
IPC分类号： F25J3/04 , F25J3/02
CPC分类号： F25J3/04618 , F25J3/04018 , F25J3/0406 , F25J3/0409 , F25J3/04127 , F25J3/04212 , F25J3/04303 , F25J3/04309 , F25J3/04315 , F25J3/04321 , F25J3/04351 , F25J3/04357 , F25J3/04393 , F25J3/04418 , F25J3/04575 , F25J3/046 , F25J2200/20 , F25J2200/54 , F25J2205/02 , F25J2250/20 , F25J2250/40 , F25J2250/50 , F25J2250/52 , Y10S62/915 , Y10S62/939
摘要： The present invention is a liquid nitrogen reflux means improvement capable of allowing the operation of conventional dual and triple reboiler air separation cycles at elevated pressures. The improvement comprises: (a) heat exchanging a portion of the liquid oxygen bottoms of the second column against a nitrogen vapor stream removed from the higher or lower pressure columns or derived from the gaseous nitrogen product, wherein prior to such heat exchange the pressure of the liquid oxygen bottoms portion or the nitrogen vapor stream or both the pressure of the liquid oxygen bottoms portion and the nitrogen vapor stream is adjusted by an effective amount so that an appropriate temperature difference exists between the liquid oxygen bottoms and the nitrogen vapor stream so that upon heat exchange the nitrogen vapor is totally condensed and the liquid oxygen bottoms portion is at least partially vaporized; (b) utilizing the condensed nitrogen as reflux in at least one of the two distillation columns; and (c) warming the vaporized oxygen to recover refrigeration.

87. 发明授权

US5255524A Dual heat pump cycles for increased argon recovery 失效
标题翻译：双热泵循环，提高氩气回收率
公开(公告)号：US5255524A
公开(公告)日：1993-10-26
申请号：US835640
申请日：1992-02-13
申请人： Rakesh Agrawal , Terrence F. Yee
发明人： Rakesh Agrawal , Terrence F. Yee
IPC分类号： F25J3/04
CPC分类号： F25J3/04103 , F25J3/04018 , F25J3/0409 , F25J3/04127 , F25J3/04206 , F25J3/04315 , F25J3/04339 , F25J3/04351 , F25J3/04369 , F25J3/04412 , F25J3/04545 , F25J3/04575 , F25J3/046 , F25J3/04618 , F25J3/04672 , F25J2200/20 , F25J2200/50 , F25J2200/54 , F25J2230/42 , F25J2240/70 , F25J2245/02 , F25J2250/20 , F25J2250/40 , F25J2250/50 , Y02B30/52 , Y10S62/924
摘要： The present invention relates to an improvement for the production of argon from cryogenic air separation processes. In particular, the improvement comprises using a first heat pump cycle to transfer refrigeration from the bottom of the low pressure column to the top of the crude argon column and a second heat pump cycle to transfer refrigeration from the bottom of the low pressure column to the top of the low pressure column.
摘要翻译：本发明涉及从低温空气分离方法生产氩气的改进。特别地，改进包括使用第一热泵循环将制冷从低压塔的底部转移到粗氩塔的顶部，以及第二热泵循环，以将制冷从低压塔的底部转移到顶部的低压塔。

88. 发明授权

US5197296A Cryogenic rectification system for producing elevated pressure product 失效
标题翻译：用于生产高压产品的低温精馏系统
公开(公告)号：US5197296A
公开(公告)日：1993-03-30
申请号：US823685
申请日：1992-01-21
申请人： Neil M. Prosser , Mark J. Roberts
发明人： Neil M. Prosser , Mark J. Roberts
IPC分类号： F25J3/04
CPC分类号： F25J3/04181 , F25J3/04315 , F25J3/04412 , F25J3/04678 , F25J3/04915 , F25J2200/20 , F25J2205/02 , F25J2290/10 , Y10S62/924
摘要： A cryogenic rectification system for producing elevated pressure product wherein the lower pressure column of a two column system is operated at elevated pressure and nitrogen-containing fluid taken from the upper portion of the lower pressure column is used to generate plant refrigeration and to regenerate feed purifier adsorbent beds thus avoiding the need for any feed expansion.

89. 发明授权

US5077978A Cryogenic process for the separation of air to produce moderate pressure nitrogen 失效
标题翻译：用于分离空气以生产中等压力氮的低温方法
公开(公告)号：US5077978A
公开(公告)日：1992-01-07
申请号：US537181
申请日：1990-06-12
申请人： Rakesh Agrawal , Donald W. Woodward
发明人： Rakesh Agrawal , Donald W. Woodward
IPC分类号： F25J3/04
CPC分类号： F25J3/042 , F25J3/04212 , F25J3/04309 , F25J3/04315 , F25J3/04412 , F25J3/04678 , F25J2200/20 , F25J2240/44 , F25J2245/50 , F25J2250/50 , Y10S62/924
摘要： This invention relates to a cryogenic process for the separation of air utilizing an integrated multi-column distillation system wherein a nitrogen rich, oxygen rich and argon rich product are generated. In the cryogenic distillation separation of air, air is initially compressed, pretreated and cooled for separation into its components. Moderate pressure, e.g., 25-80 psia nitrogen is generated with enhanced nitrogen product purity and greater recovery of both nitrogen and argon by effecting a high boil-up rate in the bottom of the lower pressure column, thereby creating a reduced liquid flow/vapor flow ratio (L/V) and utilizing a higher than customary nitrogen reflux to the top of the lower pressure column, where the concentration of oxygen in nitrogen is less than about 10 ppm by volume or the nitrogen purity is at least about 99.5% by volume. Refrigeration to drive the system is obtained by recovering the energy from the waste nitrogen stream and oxygen vapor from the lower pressure column. A second method for obtaining refrigeration is to withdraw oxygen as a bottoms liquid from the lower pressure column, expanding that liquid to a lower pressure and using it to condense the nitrogen vapor generated in a higher pressure column which has been expanded in a turbo-expander to provide the refrigeration.

90. 发明授权

US5034043A Air separation with argon recovery 失效
标题翻译：空气分离与氩气回收
公开(公告)号：US5034043A
公开(公告)日：1991-07-23
申请号：US483142
申请日：1990-02-22
申请人： Dietrich Rottmann
发明人： Dietrich Rottmann
IPC分类号： F25J3/04
CPC分类号： F25J3/04678 , F25J3/0423 , F25J3/04327 , F25J3/04412 , F25J3/04709 , F25J2200/20 , F25J2230/52 , F25J2235/58 , F25J2245/02 , Y10S62/924
摘要： An air separation system is provided comprising a double rectification column associated with a raw argon column, the latter being operated at a pressure substantially lower than the low-pressure part of the double column. A coupled turbine-compressor system is used: (a) to lower the pressure of the argon-containing gas entering a raw argon column from the low-pressure column; and (b) to compress evaporated liquid stemming from the high-pressure column which has been used to indirectly condense raw argon product at the top of the raw argon column. Also, a pump is employed to remove liquid from the bottom of the raw argon column and recycle it to the low-pressure column.
摘要翻译：提供了空气分离系统，其包括与原氩塔相关联的双精馏塔，后者在基本上低于双塔的低压部分的压力下操作。使用耦合的涡轮压缩机系统：（a）降低从低压塔进入原氩塔的含氩气体的压力; 和（b）压缩来自高压塔的蒸发液体，其已用于间接冷凝在原氩塔顶部的原始氩产物。此外，使用泵从原氩塔的底部除去液体并将其再循环到低压塔。

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