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1. 发明专利

JPH02171580A AIR SEPARATING DEVICE 失效
公开(公告)号：JPH02171580A
公开(公告)日：1990-07-03
申请号：JP32715088
申请日：1988-12-23
申请人： KOBE STEEL LTD , OSAKA GAS CO LTD
发明人： SENCHI TETSUO , TANAKA MASAYUKI , ASADA KAZUHIKO , TOMISAKA YASUSHI , HISAKADO YOSHINORI , YAMAZAKI YOSHIHIRO
IPC分类号： F25J3/04
摘要： PURPOSE:To secure as much production volume in the nighttime operation as in the daytime operation and save the power consumption to drive a compressor by increasing he flow rate of the high pressure nitrogen gas to an LNG heat exchanger when the liquefied natural gas supply rate drops, and decreasing same when the liquefied natural gas supply rate increases. CONSTITUTION:A circulated nitrogen compressor 21 consists of a low pressure stage compressor 22 and a high pressure stage compressor 23. The high pressure stage compressor 23 comprises a first compressor 23a which is operated day and night and a second compressor 23b which is operated only at night, which are parallelly connected. Therefore, during the daytime when the LNG supply rate is high, a small quantity of high pressure nitrogen gas is supplied to an LNG heat exchanger 24 by means of the first compressor 23a, and the coldness in the low temperature range where the exergy of LNG is great is used to cool the high pressure nitrogen gas. Meanwhile, during the nighttime when the LNG supply rate is low, the high pressure nitrogen gas is supplied to the LNG heat exchanger 24 at a large flow rate by means of both the first and second compressors 23a, 23b. Because the flow rate of the high pressure nitrogen gas to the LNG heat exchanger 24 is so increased, the coldness retained by LNG can be used not only in the low temperature range but also in the high temperature range.

2. 发明专利

JPH0252979A AIR SEPARATING DEVICE 失效
公开(公告)号：JPH0252979A
公开(公告)日：1990-02-22
申请号：JP20496688
申请日：1988-08-18
申请人： KOBE STEEL LTD , OSAKA GAS CO LTD
发明人： TOMISAKA YASUSHI , SENCHI TETSUO , TANAKA MASAYUKI , ASADA KAZUHIKO , HISAKADO YOSHINORI
IPC分类号： F25J3/02 , F25J3/04
摘要： PURPOSE:To reduce the installation cost of a rectification device and a cold box by a method wherein the total amount of internal circulating liquid, produced by a main evaporator, is supplied to the top of a low-pressure tower while only external circulating liquid is supplied to a high-pressure tower. CONSTITUTION:A rectification device D is constituted of a high-pressure tower 6 and a low-pressure tower 7, which are provided in parallel in a cold box C. Nitrogen gas, separated from material air in the high-pressure tower 6, is sent into a main evaporator 8 through a nitrogen gas introducing line 12 and, at the same time, is liquefied by an external circulating line 9 to return it into the liquid nitrogen receiver 10 of the high-pressure tower as external circulating liquid. Liquefied air, separated from the material air, is sent into the intermediate part of the low-pressure tower through a liquefied air introducing line 13. The liquefied air is separated in the low-pressure tower 7 into liquefied oxygen and nitrogen gas while the nitrogen gas is liquefied by a liquefying line 16 and is taken out to the outside of the title device as the product of liquefied nitrogen.

3. 发明专利

JPH02140586A AIR SEPARATING DEVICE 失效
公开(公告)号：JPH02140586A
公开(公告)日：1990-05-30
申请号：JP29390788
申请日：1988-11-21
申请人： KOBE STEEL LTD , OSAKA GAS CO LTD
发明人： TOMISAKA YASUSHI , SENCHI TETSUO , TANAKA MASAYUKI , ASADA KAZUHIKO
IPC分类号： F25J3/04
摘要： PURPOSE:To increase an amount of separated and recovered liquid nitrogen (LN2) to a value higher than that of liquid oxygen (LO2) and to reduce consumption of a power caused by the separation of liquid by a method wherein a heating means to vaporize a nitrogen component in liquid raw material air is mounted to the bottom part of a lower tower, and the lower tower is connected to a main heat exchanger so that raw material air cooled by the main heat exchanger is fed to a position at a stage higher than that of the heating means of the lower tower. CONSTITUTION:In a lower tower 41, by heating raw material gas fed to the lower tower 41 by means of flush gas from a reboiler 44, the raw material gas is separated into N2 and mixture liquid of O2 and Ar substantially not containing N2. This separation enables an approximate whole amount of N2 contained in the raw material gas to be taken out as a product LN2 and reflux LN2. This constitution enables the increase of the product LN2 capable of being separated and recovered.

4. 发明专利

JPH0252980A AIR SEPARATING DEVICE 失效
公开(公告)号：JPH0252980A
公开(公告)日：1990-02-22
申请号：JP20496588
申请日：1988-08-18
申请人： KOBE STEEL LTD , OSAKA GAS CO LTD
发明人： SENCHI TETSUO , TANAKA MASAYUKI , ASADA KAZUHIKO , TOMISAKA YASUSHI , HISAKADO YOSHINORI
IPC分类号： B01D53/04 , B01D53/26 , F25J3/04
摘要： PURPOSE:To reduce the total power of a compressor by a method wherein material air is pressurized to a pressure necessary for adsorbing operation in an adsorbing tower at the inlet side of the adsorbing tower and, further, is pressurized to a pressure within a limit pressure capable of effecting rectification operation in the high-pressure tower of a rectifying tower at the outlet side of the adsorbing tower. CONSTITUTION:Material air from a material filter 1 is pressurized by a primary material compressor 21 to a pressure (5kg/cm g) necessary for adsorbing operation in an adsorbing tower 3 while the material air from the adsorbing tower 3 is pressurized by a secondary compressor 22 to a pressure (10kg/cm g or less, for example) within a limit pressure capable of effecting rectification operation in a high-pressure tower 71 for a rectifying tower 7. Accordingly, the operating pressure of the high-pressure tower 71 becomes same as the delivery pressure of the secondary material compressor 22 in the case of this device.

5. 发明授权

US6430962B2 Production method for oxygen 有权
标题翻译：氧气的生产方法
公开(公告)号：US6430962B2
公开(公告)日：2002-08-13
申请号：US78414401
申请日：2001-02-16
申请人： KOBE STEEL LTD
发明人： MIURA SHINICHI , TANAKA MASAYUKI , NOISHIKI KOJI , NATANI SHUHEI
IPC分类号： B01J3/00 , F25J3/04 , F25J3/00
CPC分类号： F25J3/04218 , F25J3/04018 , F25J3/04024 , F25J3/0409 , F25J3/04145 , F25J3/04187 , F25J3/04303 , F25J3/04412 , F25J3/04836 , F25J3/0486 , F25J2290/10 , F25J2290/12
摘要： In a production method for oxygen, liquid oxygen is taken out from a rectification column of an air separation unit, and is compressed by a pump so that the pressure thereof exceeds the critical pressure. Then, the oxygen is led into a heat exchanger and is heated therein so that the temperature of the oxygen exceeds the critical temperature.
摘要翻译：在氧的制造方法中，从空气分离单元的精馏塔中取出液氧，并通过泵压缩，使得其压力超过临界压力。然后，将氧气引入热交换器并在其中加热，使得氧气的温度超过临界温度。

6. 发明专利

FR2793701B1 未知
公开(公告)号：FR2793701B1
公开(公告)日：2002-08-30
申请号：FR0006378
申请日：2000-05-18
申请人： KOBE STEEL LTD
发明人： YAMAMOTO SEIISHI , ASAHARA KAZUHIKO , TANAKA MASAYUKI
IPC分类号： C01B13/02 , F25J3/04 , F28D9/00 , B01D1/00 , F25J5/00
摘要： Liquid oxygen, which is extracted from the bottom of a lower pressure rectifier and compressed by a liquid oxygen pump to a predetermined supply pressure, is evaporated in a main heat exchanger to prepare an oxygen gas product, while oxygen gas is circulated in the main heat exchanger at a linear velocity which is equal to or higher than the terminal velocity, calculated depending on the supply pressure, of an oxygen droplet having a diameter of 200 mum. This process effectively prevents precipitation of heavy impurities in the heat exchanger and produces higher pressure oxygen gas at reduced operational costs.

7. 发明专利

DE10024708A1 未知
公开(公告)号：DE10024708A1
公开(公告)日：2001-01-25
申请号：DE10024708
申请日：2000-05-18
申请人： KOBE STEEL LTD
发明人： YAMAMOTO SEIICHI , ASAHARA KAZUHIKO , TANAKA MASAYUKI
IPC分类号： C01B13/02 , F25J3/04 , F28D9/00
摘要： Liquid oxygen, which is extracted from the bottom of a lower pressure rectifier and compressed by a liquid oxygen pump to a predetermined supply pressure, is evaporated in a main heat exchanger to prepare an oxygen gas product, while oxygen gas is circulated in the main heat exchanger at a linear velocity which is equal to or higher than the terminal velocity, calculated depending on the supply pressure, of an oxygen droplet having a diameter of 200 mum. This process effectively prevents precipitation of heavy impurities in the heat exchanger and produces higher pressure oxygen gas at reduced operational costs.

8. 发明专利

DE69023141T2 未知
公开(公告)号：DE69023141T2
公开(公告)日：1996-04-04
申请号：DE69023141
申请日：1990-12-26
申请人： KOBE STEEL LTD
发明人： TANAKA MASAYUKI , FUJITA HIDETO
IPC分类号： F25J3/04

9. 发明专利

DE10106480B4 未知
公开(公告)号：DE10106480B4
公开(公告)日：2008-01-31
申请号：DE10106480
申请日：2001-02-13
申请人： KOBE STEEL LTD
发明人： MIURA SHINICHI , TANAKA MASAYUKI , NOISHIKI KOJI , NATANI SHUHEI
IPC分类号： F25J5/00 , B01J3/00 , C01B13/02 , F25J3/04
摘要： In a production method for oxygen, liquid oxygen is taken out from a rectification column of an air separation unit, and is compressed by a pump so that the pressure thereof exceeds the critical pressure. Then, the oxygen is led into a heat exchanger and is heated therein so that the temperature of the oxygen exceeds the critical temperature.

10. 发明专利

FR2805339B1 未知
公开(公告)号：FR2805339B1
公开(公告)日：2004-10-29
申请号：FR0102352
申请日：2001-02-21
申请人： KOBE STEEL LTD
发明人： MIURA SHINICHI , TANAKA MASAYUKI , NOISHIKI KOJI , NATANI SHUHEI
IPC分类号： B01J3/00 , F25J3/04 , C01B13/02
摘要： In a production method for oxygen, liquid oxygen is taken out from a rectification column of an air separation unit, and is compressed by a pump so that the pressure thereof exceeds the critical pressure. Then, the oxygen is led into a heat exchanger and is heated therein so that the temperature of the oxygen exceeds the critical temperature.

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