专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH05306884A 失效
公开(公告)号：JPH05306884A
公开(公告)日：1993-11-19
申请号：JP6186892
申请日：1992-03-18
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： YAGIMURA NOBUYUKI , TSUSHIMA HIROSHI , SOMEYA KAZUO
IPC分类号： F25J3/04
摘要： PURPOSE:To shorten the restarting time after a stop of a device by a method wherein a descending liquid discharging means is provided in the upper tower of a dual type fractionating tower while liquid reservoir is provided at the outside of a fractionating tower. CONSTITUTION:Upon stop of a device, a valve 8 is fully opened to reserve liquefied gas descending from the upper tower 1 of a fractionating tower into a liquid receiver 6, into a liquid reservoir 4 at the outside of the tower through a conduit 14. In this case, the liquid receiver 6 is provided with a chimney structure capable of separating liquid from gas and the descending liquid overflows the liquid receiver 6 under a condition that the valve 8 is fully opened whereby the liquid flows into a main condenser 3. Under this condition, liquefied oxygen is reserved in the main condenser 3 while the liquefied gas, descended through the upper tower 1 if the fractionating tower and containing impurities, is reserved in the liquid reservoir 4. Upon restarting the device, the liquid reservoir 4 is boosted by gas from a lower tower 2 or liquefied gas to return gas and/or liquefied gas in the liquid reservoir 4 into the upper tower 1. In this case, the supply under gaseous condition or liquidous condition is selected so that the distribution of concentration in the upper tower becomes optimum. Accordingly, the purity of the liquefied gas in the main condenser 3 can be maintained in a high purity at all times.

2. 发明专利

JPH0579756A RARE GAS SEPARATING METHOD AND ITS APPARATUS 失效
公开(公告)号：JPH0579756A
公开(公告)日：1993-03-30
申请号：JP24090691
申请日：1991-09-20
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： WATANABE SHIGEO , OKABE MICHIMASA , SOMEYA KAZUO
IPC分类号： C01B23/00 , F25J3/04
摘要： PURPOSE:To increase the concentrations of Kr and Xe contained in liquid oxygen drawn out from the lower concentration section of a concentrator and keep the concentration of hydrocarbons such as methane to a low level. CONSTITUTION:Refined gas is cooled and liquefied by a heat exchanger 2 and fed to a hydrocarbon remover 4 and an absorber 5 which are located downstream a lower concentrating section of a concentrator 1, and a portion of it is recircurated to the lower concentrating section of the concentrator 1 through ducts 18 and 20. Thereby, the concentration of hydrocarbons such as methane contained in the liquid oxygen drawn out from the lower concentrating section of the concentrator 1 is kept at a lower level.

3. 发明专利

JPS60209229A PROCESS FOR REMOVING HYDROCARBON 失效
公开(公告)号：JPS60209229A
公开(公告)日：1985-10-21
申请号：JP6339184
申请日：1984-04-02
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： WATANABE SHIGEO , SOMEYA KAZUO , YAMAZAKI MASAHIRO
IPC分类号： B01D53/86 , C01B23/00
摘要： PURPOSE:To improve removing efficiency of hydrocarbons from feed gas by withdrawing a portion of the feed gas before a catalyst tank and determining the concn. of CO2 after burning the gas completely, determining also the concn. of CO2 at the downstream side of the catalyst tank, and controlling the flow rate of O2 to be added based on the difference between both CO2 concn. CONSTITUTION:A portion of feed gas supplied from a duct 11 is fed to a combustion device 3 together with sufficient amt. of O2 through a duct 15 where it is burnt completely and the concn. of generated CO2 is determined by a densitometer 7. Hydrocarbons in the feed gas fed to the catalyst tank 1 together with O2 is burnt in the catalyst tank 1 and the CO2 concn. of the gas is determined at the downstream side of the catalyst tank 1 with a densitometer 8. Both determined values A1 and A2 of the CO2 concn. and flow rate Q0 are inputted to an operating device 10 and a set value for optimum flow rate Qs for O2 is decided, which is outputted to a flow rate controller 6 to control a controlling valve 2 and the amt. of O2 to be added appropriately.

4. 发明专利

JPS61256172A METHOD OF PURIFYING ARGON 失效
公开(公告)号：JPS61256172A
公开(公告)日：1986-11-13
申请号：JP9551085
申请日：1985-05-07
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： WATANABE SHIGEO , SOMEYA KAZUO , KITA OSAMU , YAMAZAKI MASAHIRO
IPC分类号： F25J3/04 , F25J3/02

5. 发明专利

JPH04327782A DEVICE FOR PURIFYING GAS 失效
公开(公告)号：JPH04327782A
公开(公告)日：1992-11-17
申请号：JP9674091
申请日：1991-04-26
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： MIMAKI YUKIHIRO , UCHITOMI YOSHITADA , SOMEYA KAZUO
IPC分类号： F25J3/04
摘要： PURPOSE:To enhance the recovery of purified gas and facilitate the operation thereof. CONSTITUTION:Pipes 15, 16, as by-pass lines from a heat exchanger 3 to the upstream side of a compressor 1 are provided, in which pipes a by-pass valve 5 is provided so that the valve 5 is always used in a slightly opened state.

6. 发明专利

JPS62272082A ARGON PURIFIER 失效
公开(公告)号：JPS62272082A
公开(公告)日：1987-11-26
申请号：JP11459886
申请日：1986-05-21
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： WATANABE SHIGEO , SOMEYA KAZUO , OKABAYASHI YOSHIO
IPC分类号： F25J3/04

7. 发明专利

JPS63131978A GAS SEPARATOR 失效
公开(公告)号：JPS63131978A
公开(公告)日：1988-06-03
申请号：JP27660386
申请日：1986-11-21
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： WATANABE SHIGEO , OKABAYASHI YOSHIO , SOMEYA KAZUO , KITA OSAMU
IPC分类号： F25J3/06

8. 发明专利

JPH06238101A GAS-LIQUID CONTACTING DEVICE 失效
公开(公告)号：JPH06238101A
公开(公告)日：1994-08-30
申请号：JP3009293
申请日：1993-02-19
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： OMURA KEIJI , OKUNO SUMIO , YOSHIMATSU YUKIYOSHI , SOMEYA KAZUO , TOYONAGA NOBUYOSHI , TSUSHIMA HIROSHI
IPC分类号： F25J3/02 , B01D3/22
摘要： PURPOSE:To lower the manufacturing cost of trays by arranging the 1st frame where the height of a liquid receiver is the same as that of a perforated plate on the underside of the perforated plate, joining the perforated plate and the 1st frame and further installing the 2nd frame below crossing the 1st frame. CONSTITUTION:Pans, such as a perforated plate 2, an overflow pipe 5, a liquid receiver 6, the 1st and 2nd frames 7, 8 and a support ring 9 constituting a tray 10 are manufactured separately. At this time, the 1st frame 7 is jointed to the perforated plate 2 so that the height h1 of it including the perforated plate 2 may be the same as that h3 of the liquid receiver 6. And after the perforated plate 2 and the 1st frame 7 are jointed by spot welding, the overflow pipe 5, the liquid receiver 6 and the support ring 9 are arranged in prescribed places and all the parts, such as the perforated plate 2 are assembled and jointed with the 2nd frame 8 being abutted on undersides 6a, 7a of the liquid receiver 6 and the 1st frame 7 respectively. The 2nd frame 8 is jointed to the side 9a of the support ring 9 at its end 8a.

9. 发明专利

JPH06182135A PIPING STRUCTURE OF ADSORBING TOWER 失效
公开(公告)号：JPH06182135A
公开(公告)日：1994-07-05
申请号：JP33837392
申请日：1992-12-18
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： NAGAMATSU NOBORU , SOMEYA KAZUO
IPC分类号： B01D53/04 , B01D53/26 , F25J3/04
摘要： PURPOSE:To reduce the heat loss at the time of the regeneration of an adsorbent in the adsorbing tower of an air separator. CONSTITUTION:A pipe 6 for supplying regeneration gas, heating regeneration piping 8, cooling regeneration piping 9, changeover valves 2, 4, a heater 7 and an adsorbing tower 3 are provided and the cooling regeneration piping 9 is directly connected to the adsorbing tower 3 or connected to the piping part just near to the adsorbing tower 3.

10. 发明专利

JPS61191872A HIGH-PURITY ARGON REFINER 失效
公开(公告)号：JPS61191872A
公开(公告)日：1986-08-26
申请号：JP3038185
申请日：1985-02-20
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： WATANABE SHIGEO , SOMEYA KAZUO
IPC分类号： F25J3/04 , F25J3/02

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式