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公开(公告)号：US20220290816A1
公开(公告)日：2022-09-15
申请号：US17517110
申请日：2021-11-02
申请人： Chao Liang , Lee J. Rosen , Seth A. Potratz , Hanfei Tuo , Rakesh Ranjan
发明人： Chao Liang , Lee J. Rosen , Seth A. Potratz , Hanfei Tuo , Rakesh Ranjan
IPC分类号： F17C9/04
摘要： A vaporization system and control method are provided. Liquid cryogen is provided to first ambient air vaporizer (AAV) units. When an output superheated vapor temperature is less than a threshold, the liquid cryogen is provided to second AAV units. When greater than or equal to the threshold, it is determined whether the second AAV units are defrosted. When defrosted, the liquid cryogen is provided to the second AAV units. When not defrosted, it is determined whether ice has formed on the first AAV units. When not formed, it is again determined whether the superheated vapor temperature is less than the threshold. When formed, it is determined whether a current ambient condition is favorable to defrosting the second AAV units. When not favorable, the liquid cryogen is provided to the second bank of AAV units. When favorable, it is again determined whether the superheated vapor temperature is less than the threshold.
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公开(公告)号：US11976789B2
公开(公告)日：2024-05-07
申请号：US17517110
申请日：2021-11-02
申请人： Chao Liang , Lee J. Rosen , Seth A. Potratz , Hanfei Tuo , Rakesh Ranjan
发明人： Chao Liang , Lee J. Rosen , Seth A. Potratz , Hanfei Tuo , Rakesh Ranjan
IPC分类号： F17C9/04
CPC分类号： F17C9/04 , F17C2223/0161 , F17C2250/032 , F17C2250/0631
摘要： A vaporization system and control method are provided. Liquid cryogen is provided to first ambient air vaporizer (AAV) units. When an output superheated vapor temperature is less than a threshold, the liquid cryogen is provided to second AAV units. When greater than or equal to the threshold, it is determined whether the second AAV units are defrosted. When defrosted, the liquid cryogen is provided to the second AAV units. When not defrosted, it is determined whether ice has formed on the first AAV units. When not formed, it is again determined whether the superheated vapor temperature is less than the threshold. When formed, it is determined whether a current ambient condition is favorable to defrosting the second AAV units. When not favorable, the liquid cryogen is provided to the second bank of AAV units. When favorable, it is again determined whether the superheated vapor temperature is less than the threshold.
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公开(公告)号：US11953159B2
公开(公告)日：2024-04-09
申请号：US17517031
申请日：2021-11-02
申请人： Chao Liang , Seth A. Potratz , Lee J. Rosen , Hanfei Tuo , Rui Ma
发明人： Chao Liang , Seth A. Potratz , Lee J. Rosen , Hanfei Tuo , Rui Ma
CPC分类号： F17C7/04 , F17C13/026 , F17C2250/032 , F17C2250/0439
摘要： A cryogenic vaporization system and a method for controlling the system are provided. The system includes a first vaporizer arrangement and a second vaporizer arrangement configured for receiving a liquid cryogen and outputting a superheated vapor. The second vaporizer arrangement is connected in parallel with the first vaporizer arrangement, and includes one or more banks of ambient air vaporizer (AAV) units or loose fill media with a high heat capacity. The second vaporizer arrangement has a different configuration than that of the first vaporizer arrangement. The system further includes at least one control valve controlling provision of the liquid cryogen to at least one of the first vaporizer arrangement and the second vaporizer arrangement.
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公开(公告)号：US20220290813A1
公开(公告)日：2022-09-15
申请号：US17517031
申请日：2021-11-02
申请人： Chao Liang , Seth A. Potratz , Lee J. Rosen , Hanfei Tuo , Rui Ma
发明人： Chao Liang , Seth A. Potratz , Lee J. Rosen , Hanfei Tuo , Rui Ma
摘要： A cryogenic vaporization system and a method for controlling the system are provided. The system includes a first vaporizer arrangement and a second vaporizer arrangement configured for receiving a liquid cryogen and outputting a superheated vapor. The second vaporizer arrangement is connected in parallel with the first vaporizer arrangement, and includes one or more banks of ambient air vaporizer (AAV) units or loose fill media with a high heat capacity. The second vaporizer arrangement has a different configuration than that of the first vaporizer arrangement. The system further includes at least one control valve controlling provision of the liquid cryogen to at least one of the first vaporizer arrangement and the second vaporizer arrangement.
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公开(公告)号：US20220290815A1
公开(公告)日：2022-09-15
申请号：US17516984
申请日：2021-11-02
申请人： Hanfei Tuo , Chao Liang , Maulik R. Shelat , Sang Muk Kwark , Seth A. Potratz
发明人： Hanfei Tuo , Chao Liang , Maulik R. Shelat , Sang Muk Kwark , Seth A. Potratz
IPC分类号： F17C9/02
摘要： A cryogenic vaporization system and method are provided. A first heat exchanger heats a liquid cryogen via indirect heat exchange to output a cryogenic vapor at a first temperature. A second heat exchanger receives the cryogenic vapor at the first temperature. The second heat exchanger heats the cryogenic vapor via indirect heat exchange to a second temperature. The cryogenic vapor at the second temperature is recirculated to the first heat exchanger to heat the liquid cryogen and cool the recirculated cryogenic vapor to a third temperature. A third heat exchanger receives the cryogenic vapor at the third temperature. The third heat exchanger heats the cryogenic vapor to a fourth temperature. The third heat exchanger outputs the cryogenic vapor at the fourth temperature.
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公开(公告)号：US11674750B2
公开(公告)日：2023-06-13
申请号：US17234080
申请日：2021-04-19
申请人： Hanfei Tuo , Zhengrong Xu
发明人： Hanfei Tuo , Zhengrong Xu
CPC分类号： F25J3/04412 , F25J3/0257 , F25J3/04012 , F25J3/04763 , F25J1/0012 , F25J2200/50 , F25J2210/40 , F25J2250/20
摘要： Enhancements to a dual column, nitrogen producing cryogenic air separation unit are provided. Such enhancements include an improved air separation cycle that uses multiple condenser-reboilers and recycles a portion of the vapor from one or more of the condenser-reboilers to the incoming feed stream and or the compressed purified air streams to yield improvements in such dual column, nitrogen producing cryogenic air separation units. The multiple condenser-reboilers preferably include an integrated condenser-reboiler arrangement comprising a heat exchanger having a set of nitrogen condensing passages, a first set and second set of boiling passages, and a phase separator.
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7.发明公开公开(公告)号：US20230251033A1
公开(公告)日：2023-08-10
申请号：US18300033
申请日：2023-04-13
申请人： Hanfei Tuo , Zhengrong Xu
发明人： Hanfei Tuo , Zhengrong Xu
CPC分类号： F25J3/04412 , F25J3/04012 , F25J3/04763 , F25J3/0257 , F25J2250/20 , F25J2200/50 , F25J2210/40 , F25J1/0012
摘要： Enhancements to a dual column, nitrogen producing cryogenic air separation unit are provided. Such enhancements include an improved air separation cycle that uses multiple condenser-reboilers and recycles a portion of the vapor from one or more of the condenser-reboilers to the incoming feed stream and or the compressed purified air streams to yield improvements in such dual column, nitrogen producing cryogenic air separation units. The multiple condenser-reboilers preferably include an integrated condenser-reboiler arrangement comprising a heat exchanger having a set of nitrogen condensing passages, a first set and second set of boiling passages, and a phase separator.
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公开(公告)号：US20160258678A1
公开(公告)日：2016-09-08
申请号：US15153179
申请日：2016-05-12
申请人： Hanfei Tuo , Karl K. Kibler , Maulik R. Shelat
发明人： Hanfei Tuo , Karl K. Kibler , Maulik R. Shelat
IPC分类号： F25J3/04
CPC分类号： F25J3/04412 , F25J5/005 , F25J2200/06 , F25J2200/54 , F25J2250/02 , F25J2250/04 , F25J2250/10 , F25J2250/20 , F25J2290/32 , F25J2290/44 , F28F2265/12
摘要： A system and method for the concurrent condensation of a nitrogen-rich vapor and vaporization of an oxygen-rich liquid in a distillation column based air separation unit is provided. The disclosed system includes a condenser-reboiler heat exchanger located between a lower pressure column and a higher pressure column and configured to condense a nitrogen-rich vapor from the higher pressure column and partially vaporize an oxygen-rich liquid from the lower pressure column. Within the condenser-reboiler heat exchanger, the nitrogen-rich vapor flows in an upward direction such that any non-condensables present in the nitrogen-rich vapor will accumulate proximate the upper portion or top of the condenser-reboiler modules where they can be easily removed through venting by means of a venting apparatus having a plurality of perforated tubes.
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公开(公告)号：US20210381763A1
公开(公告)日：2021-12-09
申请号：US17234080
申请日：2021-04-19
申请人： Hanfei Tuo , Zhengrong Xu
发明人： Hanfei Tuo , Zhengrong Xu
摘要： Enhancements to a dual column, nitrogen producing cryogenic air separation unit are provided. Such enhancements include an improved air separation cycle that uses multiple condenser-reboilers and recycles a portion of the vapor from one or more of the condenser-reboilers to the incoming feed stream and or the compressed purified air streams to yield improvements in such dual column, nitrogen producing cryogenic air separation units. The multiple condenser-reboilers preferably include an integrated condenser-reboiler arrangement comprising a heat exchanger having a set of nitrogen condensing passages, a first set and second set of boiling passages, and a phase separator.
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公开(公告)号：US10408536B2
公开(公告)日：2019-09-10
申请号：US15695320
申请日：2017-09-05
摘要： A system and method for neon recovery in a double column or triple column air separation unit is provided. The neon recovery system comprises a non-condensable stripping column configured to produce a liquid nitrogen-rich liquid column bottoms and a non-condensable gas containing overhead and one or more condensing units arranged to produce a crude neon vapor stream that contains greater than about 50% mole fraction of neon with the overall neon recovery exceeding 95%. In addition, there is minimal liquid nitrogen consumption and since much of the liquid nitrogen is recycled back to the lower pressure column of the air separation unit, there is minimal impact on the recovery of other products from the air separation unit.
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