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公开(公告)号：US11346603B2
公开(公告)日：2022-05-31
申请号：US16617141
申请日：2018-05-18
发明人： Kenji Hirose , Shinji Tomita
摘要： A gas production system that can supply liquefied gas obtained by rectifying source gas as product gas continuously with high heat efficiency without using a machine that has a risk of contamination like a pump. A gas production system includes a single pressure device having a single pressurized container to which liquefied gas extracted from a rectification unit is supplied, a pressure line for extracting and vaporizing a part of the liquefied gas in the pressurized container and returning the part of the liquefied gas to the pressurized container, and a second heat exchange unit that is disposed in the pressure line, and a liquefied gas storage unit that stores liquefied gas which is led out from the pressurized container.
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公开(公告)号：US11150016B2
公开(公告)日：2021-10-19
申请号：US15956921
申请日：2018-04-19
IPC分类号： F25J3/04
摘要： A nitrogen production system that can produce high purity nitrogen containing a desired concentration of oxygen and ultrahigh purity nitrogen containing a desired concentration of argon in a single rectifying column while restraining increase in electric power consumption and a production process thereof are provided. The method can include the steps of rectifying a cooled and compressed air stream in the rectifying column; withdrawing the ultrahigh purity nitrogen stream from a top portion of the nitrogen rectifying column, warming the ultrahigh purity nitrogen stream in a heat exchanger, and then recovering the ultrahigh purity nitrogen stream from the heat exchanger; and withdrawing a high purity nitrogen stream from a rectification section of the nitrogen rectifying column, warming the high purity nitrogen stream in the heat exchanger, and then recovering the high purity nitrogen stream from the heat exchanger.
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公开(公告)号：US10036589B2
公开(公告)日：2018-07-31
申请号：US14655261
申请日：2013-12-16
申请人： L'AIR LIQUIDE
发明人： Kenji Hirose , Shinji Tomita
CPC分类号： F25J1/0015 , F01K25/08 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2225/0123 , F17C2225/035 , F17C2227/0316 , F17C2227/0323 , F17C2227/0393 , F17C2265/05 , F17C2270/0136 , F25J1/0012 , F25J1/002 , F25J1/004 , F25J1/0045 , F25J1/0222 , F25J1/0224 , F25J1/0264 , F25J1/0281 , F25J1/0285 , F25J1/0292 , F25J3/04412 , F25J2210/62
摘要： An apparatus and a method for cooling and compressing a fluid to produce a low-temperature compressed fluid that can efficiently use the cold of LNG and reduce the energy needed, the apparatus using a Rankine cycle system having a first compression device, a first heat exchanger, an expansion device, a second heat exchanger, and a first flow passageway for guiding the heat transfer medium from the second heat exchanger to the first compression device; and at least one second compression device that is coupled to the expansion device, wherein at the second heat exchanger, a low-temperature LNG and the heat transfer medium undergo heat transfer, wherein at the first heat exchanger, a fed material gas and the heat transfer medium undergo heat transfer to produce a low-temperature fluid from the material gas, and the low-temperature fluid is compressed at the second compression device to produce a low-temperature compressed fluid.
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公开(公告)号：US20190293348A1
公开(公告)日：2019-09-26
申请号：US16359150
申请日：2019-03-20
发明人： Kenji Hirose
摘要： A portion of feed air is expanded and cooled in front of a main heat exchanger, and is used as cold for precooling the remaining unexpanded feed air inside the main heat exchanger. A portion of the feed air precooled inside the main heat exchanger is removed to outside the main heat exchanger, expanded and cooled, and used as cold to cool the remaining unexpanded precooled feed air inside the main heat exchanger.
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公开(公告)号：US11879685B2
公开(公告)日：2024-01-23
申请号：US17023290
申请日：2020-09-16
发明人： Kenji Hirose
CPC分类号： F25J1/0017 , F25J1/0012 , F25J1/0015 , F25J3/04024 , F25J3/04442 , F25J2200/00 , F25J2210/40 , F25J2210/42 , F25J2210/50
摘要： Certain embodiments of the present invention lies in providing a high-purity oxygen production system which is capable of supplying liquid nitrogen in order to supply the cold required by a high-purity oxygen production apparatus, without the use of a costly conventional liquefaction apparatus.
A high-purity oxygen production system in accordance with an embodiment can include: an air separation apparatus including a main heat exchanger, a medium-pressure column and a low-pressure column; and a high-purity oxygen production apparatus including a nitrogen compressor, a nitrogen heat exchanger and at least one (high-purity) oxygen rectification column, an oxygen-containing stream serving as a starting material for high-purity oxygen is supplied from the low-pressure column to the high-purity oxygen production apparatus, and liquid nitrogen obtained from the medium-pressure column is supplied to the high-purity oxygen production apparatus in order to replenish cold heat required for operation of the high-purity oxygen production apparatus.-
公开(公告)号：US11549747B2
公开(公告)日：2023-01-10
申请号：US16840065
申请日：2020-04-03
发明人： Kenji Hirose , Shinji Tomita
IPC分类号： F25J3/04
摘要： A cryogenic air separation apparatus comprises: a heat exchanger, a first rectification column, a first condenser, a second rectification column, a third rectification column, a second condenser, a high-purity oxygen rectification column, a third condenser, a nitrogen compressor, and a compressed recycled gas line L52 for introducing product nitrogen gas compressed by the first nitrogen compressor into a warm end (heat source) of an ultra-high-purity oxygen vaporizer as a compressed recycled gas.
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公开(公告)号：US11353262B2
公开(公告)日：2022-06-07
申请号：US16359150
申请日：2019-03-20
发明人： Kenji Hirose
摘要： A portion of feed air is expanded and cooled in front of a main heat exchanger, and is used as cold for precooling the remaining unexpanded feed air inside the main heat exchanger. A portion of the feed air precooled inside the main heat exchanger is removed to outside the main heat exchanger, expanded and cooled, and used as cold to cool the remaining unexpanded precooled feed air inside the main heat exchanger.
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