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1. 再颁专利

USRE34038E Separating argon/oxygen mixtures using a structured packing 失效
公开(公告)号：USRE34038E
公开(公告)日：1992-08-25
申请号：US708948
申请日：1991-05-31
申请人： Douglas L. Bennett , Keith A. Ludwig , George S. Witmer , Charles M. Woods
发明人： Douglas L. Bennett , Keith A. Ludwig , George S. Witmer , Charles M. Woods
IPC分类号： F25J3/04
CPC分类号： F25J3/04909 , F25J3/04309 , F25J3/04412 , F25J3/04678 , B01J2219/326 , F25J2250/42 , F25J2250/58 , F25J2290/10
摘要： The present invention relates to improvements to a process and apparatus for the cryogenic distillation of mixtures, which comprise oxygen, nitrogen and argon, e.g. air. The improvement comprises effectuating intimate contact of the liquid and vapor phase streams utilizing a structured packing to effectuate the intimate contact in at least .[.those.]. .Iadd.one of the .Iaddend.regions of the distillation column system where argon concentration is within the range from about 0.6 to about 75 volume percent.[.,.]. and .[.operating the process such that.]. the densimetric superficial gas velocity .[.in those regions.]. is at least 0.06 feet per second. .[.The present invention also relates to a method for improving a cryogenic distillation apparatus having at least one distillation column for the separation of mixtures containing oxygen and argon, comprising the step of replacing the distillation trays with a structured packing in at least those regions of the distillation column system where the concentration of argon is in the range from about 0.6 to about 75 volume percent..]. .Iadd.The present invention also relates to the use of structured packing to reduce the HETP (height of packing equivalent to a theoretical plate) in a region of a distillation column system separating oxygen and argon by intimately contacting a liquid phase stream containing oxygem and argon, and a vapor phase stream containing oxygen and argon at an argon concentration within the range from 0.6 to 75 volume percent and a densimetric superficial gas velocity of at least 0.06 feet per second. .Iaddend.

2. 发明授权

US4836836A Separating argon/oxygen mixtures using a structured packing 失效
标题翻译：使用规整填料分离氩/氧混合物
公开(公告)号：US4836836A
公开(公告)日：1989-06-06
申请号：US132535
申请日：1987-12-14
申请人： Douglas L. Bennett , Keith A. Ludwig , George S. Witmer , Charles M. Woods
发明人： Douglas L. Bennett , Keith A. Ludwig , George S. Witmer , Charles M. Woods
IPC分类号： F25J3/02 , F25J3/04
CPC分类号： F25J3/04915 , F25J3/04412 , F25J3/04678 , F25J3/04909 , B01J2219/326 , F25J2290/10 , Y10S62/906 , Y10S62/924
摘要： The present invention relates to improvements to a process and apparatus for the cryogenic distillation of mixtures, which comprise oxygen, nitrogen and argon, e.g. air. The improvement comprises effectuating intimate contact of the liquid and vapor phase streams utilizing a structured packing to effectuate the intimate contact in at least those regions of the distillation column system where argon concentration is within the range from about 0.6 to about 75 volume percent, and operating the process such that the densimetric superficial gas velocity in those regions is at least 0.06 feet per second. The present invention also relates to a method for improving a cryogenic distillation apparatus having at least one distillation column for the separation of mixtures containing oxygen and argon, comprising the step of replacing the distillation trays with a structured packing in at least those regions of the distillation column system where the concentration of argon is in the range from about 0.6 to about 75 volume percent.

3. 发明授权

US4813988A Suitable distillation column packing for the cryogenic separation of air 失效
标题翻译：用于空气低温分离的合适的蒸馏塔填料
公开(公告)号：US4813988A
公开(公告)日：1989-03-21
申请号：US197555
申请日：1988-05-23
申请人： Douglas L. Bennett , Keith A. Ludwig , Andrew J. Patrylak , John Zabrenski
发明人： Douglas L. Bennett , Keith A. Ludwig , Andrew J. Patrylak , John Zabrenski
IPC分类号： B01J19/30 , F25J3/04 , F25J3/00
CPC分类号： B01J19/30 , F25J3/04854 , F25J3/04896 , F25J3/04909 , B01J2219/30408 , F25J2290/10 , F25J2290/44 , Y10S62/906
摘要： This invention relates to a process for the cryogenic separation of oxygen-containing mixtures to produce an enriched product whereby oxygen concentrations greater than 21% by volume are achieved in the process via passing streams of liquid and vapor countercurrently through a mass transfer zone which contains packing elements fabricated from a material having a thickness of less than about 1 millimeter, having a copper concentration of at least about 30% by weight and a heat of combustion of less than 1.0 Kcal/g, thereby avoiding the risk of flammability.
摘要翻译：本发明涉及一种用于低温分离含氧混合物以产生富集产物的方法，由此在该方法中通过使液体和蒸汽流通过包含填充物的传质区逆流流动而获得大于21体积％的氧浓度由厚度小于约1毫米的材料制成的元件，其铜浓度为至少约30重量％，燃烧热小于1.0千卡/克，从而避免了可燃性的风险。

4. 发明授权

US4510023A Perforated bubble caps for enhanced vapor/liquid contact on a distillation tray 失效
标题翻译：用于在蒸馏盘上增强蒸汽/液体接触的穿孔泡罩
公开(公告)号：US4510023A
公开(公告)日：1985-04-09
申请号：US505548
申请日：1983-06-17
申请人： Douglas L. Bennett , Thomas J. Edwards , Howard C. Rowles
发明人： Douglas L. Bennett , Thomas J. Edwards , Howard C. Rowles
IPC分类号： B01D3/20
CPC分类号： B01D3/205
摘要： This invention relates to a distillation system for effecting separation of a multicomponent fluid and to an improved bubble-cap design which can accommodate very wide ranges of vapor and liquid loadings. A portion of the tray is provided with bubble caps having first and second slot openings with the second slot opening at an elevation higher than the first opening.
摘要翻译：本发明涉及一种用于实现多组分流体分离的蒸馏系统以及可适应非常宽范围的蒸汽和液体负载的改进的气泡 - 盖设计。托盘的一部分设置有具有第一和第二狭槽开口的泡罩，第二槽开口的高度高于第一开口。

5. 发明授权

US4411756A Boiling coolant ozone generator 失效
标题翻译：沸腾冷却剂臭氧发生器
公开(公告)号：US4411756A
公开(公告)日：1983-10-25
申请号：US481026
申请日：1983-03-31
申请人： Douglas L. Bennett , Donald C. Amoss
发明人： Douglas L. Bennett , Donald C. Amoss
IPC分类号： B01J19/08 , C01B13/11 , C02F1/78 , F28D15/02
CPC分类号： F28D15/02 , B01J19/088 , C01B13/11 , B01J2219/0849 , C01B2201/10 , C01B2201/24 , C01B2201/34 , C01B2201/70 , C01B2201/74 , C02F1/78
摘要： An ozone generator is set forth wherein the production of ozone is increased by the more efficient cooling of the generator electrodes and therefore the discharge gap where the ozone forms. The cooling is effected by the use of a boiling coolant fluid which has a high heat transfer capacity. Additionally the electrode structure is made more rigid for increased life in the presence of boiling cooling fluid. A method of ozone preparation is also set forth. Alternately cooling can be enhanced by the introduction of a gas into the coolant to enhance coolant turbulence without boiling the coolant.
摘要翻译：提出了一种臭氧发生器，其中通过发生器电极的更有效的冷却以及因此形成臭氧的放电间隙来增加臭氧的产生。冷却通过使用具有高传热能力的沸腾冷却剂流体来实现。此外，在沸腾的冷却流体的存在下，电极结构被制成更刚性以增加寿命。还阐述了臭氧制备方法。可以通过向冷却剂中引入气体来提高冷却效率，以增加冷却剂紊流而不使冷却剂沸腾。

6. 发明授权

US5122174A Boiling process and a heat exchanger for use in the process 失效
标题翻译：沸腾过程和用于该过程的热交换器
公开(公告)号：US5122174A
公开(公告)日：1992-06-16
申请号：US663339
申请日：1991-03-01
申请人： Swaminathan Sunder , Douglas L. Bennett , Donn M. Herron , Keith A. Ludwig , Edwin C. Rogusky
发明人： Swaminathan Sunder , Douglas L. Bennett , Donn M. Herron , Keith A. Ludwig , Edwin C. Rogusky
IPC分类号： F28B1/00 , F25J3/00 , F25J3/04 , F28D3/00 , F28D3/04 , F28D5/02 , F28D9/00
CPC分类号： F28D9/0068 , F25J3/0409 , F25J3/04412 , F25J5/005 , F28D21/0017 , F25J2235/50 , F25J2245/50 , F25J2250/04 , F25J2290/32 , F28D2021/0033 , Y10S62/903
摘要： The present invention relates to a boiling process in a downflow heat exchanger and the heat exchanger itself with liquid distribution enhancing features which improve performance and allow safe and efficient operation. Performance enhancing features include a partially flooded hardway distribution region with a liquid volume fraction greater than about 0.25 and preferably greater than 0.5, adjusting the heat transfer surface area to maintain a liquid film Reynolds number above 20 and, preferably, above 50 yet less than 1000, preferably less than 300, for at least 75% of the reboiler surface, and, optionally, intermediate feeding of liquid at various intervals along the length of the heat exchanger to obtain more uniform values of liquid film Reynolds numbers and intermediate redistribution.

7. 外观设计

USD322353S Toe protector insert 失效
公开(公告)号：USD322353S
公开(公告)日：1991-12-17
申请号：US247758
申请日：1988-09-22
申请人： Douglas L. Bennett
设计人： Douglas L. Bennett

8. 发明授权

US4981111A Circulating fluidized bed combustion reactor with fly ash recycle 失效
标题翻译：循环流化床燃烧反应器与飞灰回收
公开(公告)号：US4981111A
公开(公告)日：1991-01-01
申请号：US442032
申请日：1989-11-28
申请人： Douglas L. Bennett , David W. Studer
发明人： Douglas L. Bennett , David W. Studer
IPC分类号： B01J8/38 , F23C10/10
CPC分类号： B01J8/388 , F23C10/10 , F23C2206/101
摘要： A circulating fluidized bed combustion reactor and a process for combusting a solid hydrocarbon fuel in the same wherein fly ash recycling is utilized to regulate heat transfer and to minimize erosion of reactor operating components. The process comprises introducing a solid hydrocarbon fuel and an oxygen-containing gas into a combustion zone which is surrounded by a plurality of adjoining cooling tubes containing a circulating fluid; combusting the fuel in the presence of the oxygen-containing gas within a predetermined temperature range thereby forming hot exhaust gases containing solid particles; discharging the hot exhaust gases containing the solid particles from the combustion zone and cooling the exhaust gases by indirect heat exchange against the cooling tubes; separating the resultant cooled solid particles into at least a first portion which is recycled into the combustion zone and a second portion having an average particle size smaller than the first portion; separating the second portion into a gas stream substantially free of particles and a concentrated stream of particles; recycling the concentrated stream of particles into the combustion zone at a rate sufficient to maintain the predetermined temperature range within the combustion zone and exhausting the gas stream which is substantially free of solid particles.
摘要翻译：循环流化床燃烧反应器和用于燃烧其中的固体烃燃料的方法，其中使用飞灰回收来调节热传递并最小化反应器操作部件的侵蚀。该方法包括将固体烃燃料和含氧气体引入燃烧区，所述燃烧区被包含循环流体的多个邻接的冷却管包围; 在含氧气体的存在下在预定的温度范围内燃烧燃料，从而形成含有固体颗粒的热废气; 从燃烧区排出含有固体颗粒的热废气，并通过与冷却管的间接热交换冷却废气; 将所得到的冷却固体颗粒分离成至少第一部分，该第一部分再循环到燃烧区中，第二部分的平均粒度小于第一部分; 将第二部分分离成基本上不含颗粒的气流和浓缩的颗粒流; 将浓缩的颗粒流以足以将预定温度范围保持在燃烧区内并排出基本上不含固体颗粒的气流的速率将浓缩的颗粒流再循环到燃烧区中。

9. 发明授权

US4871382A Air separation process using packed columns for oxygen and argon recovery 失效
标题翻译：空气分离过程使用填充柱进行氧气和氩气回收
公开(公告)号：US4871382A
公开(公告)日：1989-10-03
申请号：US187682
申请日：1988-04-29
申请人： Robert M. Thorogood , Douglas L. Bennett , Rodney J. Allam , Alan L. Prentice , Bruce K. Dawson
发明人： Robert M. Thorogood , Douglas L. Bennett , Rodney J. Allam , Alan L. Prentice , Bruce K. Dawson
IPC分类号： F25J3/02 , F25J3/04
CPC分类号： F25J3/04309 , F25J3/04206 , F25J3/04412 , F25J3/04678 , F25J3/04884 , F25J3/04909 , F25J3/04915 , B01J2219/326 , F25J2250/40 , F25J2250/50 , F25J2250/58 , F25J2290/10 , Y10S62/906 , Y10S62/924
摘要： The present invention relates to an improvement to a cryogenic air separation process having an argon sidearm column. The improvement to the process for maximizing argon recovery comprises effectuating the intimate contact of the liquid phase stream and the vapor phase stream in the low pressure column and the argon sidearm column of an integrated multi-column, e.g. three column, cryogenic distillation system by utilizing a structured or ordered packing.
摘要翻译：本发明涉及具有氩侧臂柱的低温空气分离方法的改进。对于使氩回收最大化的方法的改进包括实现液相物流和集成多塔的低压塔和氩侧臂柱中的气相物流的紧密接触，例如，三柱，低温蒸馏系统，利用结构或有序包装。

10. 发明授权

US5305610A Process and apparatus for producing nitrogen and oxygen 失效
标题翻译：用于生产氮和氧的方法和装置
公开(公告)号：US5305610A
公开(公告)日：1994-04-26
申请号：US573922
申请日：1990-08-28
申请人： Douglas L. Bennett , Keith A. Ludwig , Robert F. Weimer
发明人： Douglas L. Bennett , Keith A. Ludwig , Robert F. Weimer
IPC分类号： B01D8/00 , B04C5/00 , B04C5/081 , F25J3/04 , F25B9/02
CPC分类号： B04C5/081 , B01D8/00 , B04C5/00 , F25J3/04636 , F25J3/04993 , F25J2205/10 , F25J2215/50 , Y10S62/91
摘要： The present invention is a separation process for atmospheric gases. In the process, an atmospheric gas stream, for example air, is compressed and may be partly condensed prior to introduction into a vortex tube air separator. The performance of the tube separation can be upgraded, i.e. by improving the concentration and/or purity of the main oxygen stream, by enhancing the separator efficiency of the vortex tube (VT) apparatus. One approach is by selectively refrigerating the cold end of the tube with partial recycle of nitrogen gas waste stream, effecting a rectification section. Another approach is to increase the heat transfer between the outlet gas stream and the liquid film flowing along the curvilinear periphery of the separator means, by mechanical innovations in its configuration.
摘要翻译：本发明是用于大气气体的分离方法。在此过程中，大气气流，例如空气，被压缩，并可在引入涡流管空气分离器之前部分冷凝。可以通过提高涡流管（VT）装置的分离器效率来升级管分离的性能，即通过改善主氧流的浓度和/或纯度。一种方法是通过选择性地冷却管的冷端，部分地再循环氮气废气流，从而实现整流段。另一种方法是通过其结构中的机械创新来增加出口气体流和沿着分离器装置的曲线周边流动的液体膜之间的热传递。

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