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

JPS59170412A Method of recovering and charging intermediate medium in cold and heat power plant 失效
标题翻译：在冷热电厂中恢复和充电中间介质的方法
公开(公告)号：JPS59170412A
公开(公告)日：1984-09-26
申请号：JP4441583
申请日：1983-03-18
申请人： Hitachi Ltd , Hitachi Techno Eng Co Ltd
发明人： OKABAYASHI YOSHIO , TSUSHIMA HIROSHI
IPC分类号： F01K25/10
CPC分类号： F01K25/10
摘要： PURPOSE:To prevent intermediate medium charged in a Rankine cycle system from being discharged to the atmosphere upon periodical inspection, and as well to aim at recovering the medium, by recovering the medium, outside of the system by the pressure differential and the liquid head, and as well by charging the recovered medium in the system by the pressure differential. CONSTITUTION:During periodical inspection, when the evaporation of liquefied medium in a medium evaporator 12 is completed after a generator 14 is stopped, the supply of heat source to a heat exchange pipe 41 is ceased. When the condensation and liquefaction of evaporated medium in an LNG evaporator 10 are completed, a valve 57 is closed while a valve 58 is opened to allow LNG to pass through a heat exchange pipe 42 so that a medium recovering unit 16 and a tank 15 are cooled down, resulting in pressure drop. Therefore, liquid medium in the evaporator 10 is recovered to the tank 15 by the pressure differential between the evaporator 10 and the tank 15 and the liquid head. Meanwhile evaporated medium in another Rankine cycle system is extracted by closing a valve 61 and opening a valve 59 into a recovering unit 16, and is condensated and liquefied, being stored in a tank 15. Further, after completion of the inspection the liquefied medium in the tank 15 is charged into the evaporators by the pressure differential, and when the pressure is made uniform, the valve 57 is opened to recharge liquefied medium. After a limited liquid level is established, the valve 61 is closed.
摘要翻译：目的：为了防止在兰金循环系统中充电的中间介质在定期检查时排放到大气中，并且为了恢复介质，通过压差和液体头将介质回收到系统外部，以及通过压差对系统中回收的介质进行充电。构成：在定期检查期间，当中间蒸发器12中的液化介质的蒸发在发电机14停止之后完成时，停止向热交换管41供应热源。当LNG蒸发器10中的蒸发介质的冷凝和液化完成时，关闭阀门57，同时打开阀门58以允许LNG通过热交换管42，使得介质回收单元16和罐15为冷却，导致压降。因此，蒸发器10中的液体介质通过蒸发器10和罐15之间的压差以及液体头被回收到罐15。同时通过关闭阀61并将阀59打开到回收单元16中并被冷凝和液化，从而提取另一兰金循环系统中的蒸发介质，储存在罐15中。此外，检查完成后，液化介质罐15通过压力差被装入蒸发器中，并且当压力均匀时，阀57打开以对液化介质再充电。在建立有限液位之后，阀61关闭。

2. 发明专利

JPH07253271A PRODUCT PRESSURE CONTROLLING METHOD FOR HIGH COOLED SEPARATOR DEVICE 失效
公开(公告)号：JPH07253271A
公开(公告)日：1995-10-03
申请号：JP4681394
申请日：1994-03-17
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： NAKAMURA HIROHIKO , TASAKA YASUO , TSUSHIMA HIROSHI , KAWAMURA YUTAKA
IPC分类号： F25J3/04
摘要： PURPOSE:To perform an automatic control of a product pressure of a high cooled separator device. CONSTITUTION:A pressure gauge 4 is installed at a product line, and a pressure adjusting meter 6 and a valve 3 are installed in a waste gas line. A set value of a waste gas pressure adjusting meter 6 is automatically set with a pressure of product. With such an arrangement as above, an automatic control for the product pressure of the high cooled separator device can become possible. A minimum raw material pressure can be attained for getting a product pressure.

3. 发明专利

JPH0261481A METHOD AND DEVICE FOR MANUFACTURING ULTRA-HIGH PURITY NITROGEN 失效
公开(公告)号：JPH0261481A
公开(公告)日：1990-03-01
申请号：JP20837988
申请日：1988-08-24
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： KOYAMA SHOJI , ISHIZU HISAZUMI , HOSOKAWA JUNICHI , TSUSHIMA HIROSHI
IPC分类号： F25J3/02 , F25J3/04 , F25J3/08
摘要： PURPOSE:To collect ultra-high purity nitrogen containing the oxygen content of less than 1ppb by a method wherein a nitrogen circulating circuit consisting of a booster heat exchanger, a fractionating tower and a condenser is provided and the elevating gas of high purity liquid nitrogen, supplied from a liquid nitrogen tank, in a refining tower is condensed to fractionate it as circulating liquid. CONSTITUTION:A liquid nitrogen tank 1 is filled with liquid nitrogen, having a high purity or a purity inferior thereto, directly from an air separator or by a tank lorry. The liquid nitrogen is supplied to the lower part of a refining tower 3 for an ultra-high purity nitrogen refining unit. The liquid nitrogen is mixed further with descending liquid in the refining tower 3 to obtain circulating liquid nitrogen, is taken out of the bottom of the refining tower 3 and is reduced in the pressure thereof by a pressure reducing valve 12. Thereafter, the circulating liquid nitrogen is sent into a condenser 4. In the condenser 4, provided at the top of the refining tower 3, heat exchange between ultra-high purity nitrogen gas in the top of the refining tower 3 and the circulating liquid nitrogen is effected to produce descending liquid nitrogen. The descending liquid nitrogen is collected in the top of the refining tower 3 and one portion thereof is taken out of a pipe 28 as refined ultra-high purity nitrogen and is reserved into an ultra-high purity liquid nitrogen tank 2 through a regulating valve 13 for keeping the collecting amount of the ultra-high purity liquid nitrogen in constant.

4. 发明专利

JPS63229119A CONTROL METHOD FOR PREPROCESSOR OF AIR SEPARATION PLANT 失效
公开(公告)号：JPS63229119A
公开(公告)日：1988-09-26
申请号：JP6099187
申请日：1987-03-18
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： TSUSHIMA HIROSHI , TASAKA YASUO , YAMAZAKI MASAHIRO
IPC分类号： B01D53/04 , F25J3/04 , F25J3/08
摘要： PURPOSE:To control variation of generated gas pressure by adding a feed forward signal to make a regenerated gas pressure regulating valve open at the time of completing the regenerating process of an adsorption tower and also adding a feed forward signal to make said valve close at the time of starting the regenerating process. CONSTITUTION:Changeover of the adsorption process and the regenerating process of adsorption towers 1 and 2 is carried out by opening and closing selector valves 3A, 3B and 4A, 4B and also a selector valve 5 for pressurizing by means of a signal issued from a changeover control device 7. Since regenerated gas is discharged out of a pressure regulating valve 6 while the selector valves 4A and 4B are closed, the variation of regenerated gas pressure can be minimized by adding a feed forward signal to make the pressure regulating valve 6 open at the time of the regenerating process of an adsorption tower and a feed forward signal to make the pressure regulating valve 6 close at the time of starting the regenerating process respectively to an output signal of the pressure regulating gage.

5. 发明专利

JPS6391121A AIR SEPARATOR 失效
公开(公告)号：JPS6391121A
公开(公告)日：1988-04-21
申请号：JP23465686
申请日：1986-10-03
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： TSUSHIMA HIROSHI , YAMAZAKI MASAHIRO , OKABE MICHIMASA
IPC分类号： B01D53/04 , F25J3/04 , F25J3/08
摘要： PURPOSE:To heat regenerated gas and to reduce the consumption of motive power by heat-exchanging high-temp. gas of the outlet of an expander compressor with the regenerated gas discharged from a temp. swing type adsorption tower. CONSTITUTION:The air of a raw material is sent to a cooler 2 and an adsorption tower 3 via a compressor 1 to adsorb and remove water content and CO2 and made to purified air, and this is sent to an expander compressor 5 and compressed. This compressed air is heat-exchanged with waste gas discharged from a low temp. separator in a regenerated gas preheater 7, cooled and sent to an air heat exchange 4. On the other hand, the waste gas discharged from the low temp. separator is heated with both the air heat exchanger 4 and the regenerated gas preheater 7 and used as the regeneration gas of the adsorption tower 3.

6. 发明专利

JPS62210386A AIR SEPARATOR 失效
公开(公告)号：JPS62210386A
公开(公告)日：1987-09-16
申请号：JP5249486
申请日：1986-03-12
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： TSUSHIMA HIROSHI , YAMAZAKI MASAHIRO , OKABE MICHIMASA
IPC分类号： F25J3/04

7. 发明专利

JPS61262584A METHOD OF SEPARATING AIR 失效
公开(公告)号：JPS61262584A
公开(公告)日：1986-11-20
申请号：JP10379585
申请日：1985-05-17
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： TSUSHIMA HIROSHI , YAMAZAKI MASAHIRO
IPC分类号： F25J3/04

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

JPH05223A CONTROL OF FLOW RATE OF PURIFIED GAS OF TSA ADSORBING TOWER 失效
公开(公告)号：JPH05223A
公开(公告)日：1993-01-08
申请号：JP15293391
申请日：1991-06-25
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： NAKAMURA HIROHIKO , TASAKA YASUO , TSUSHIMA HIROSHI
IPC分类号： B01D53/04
摘要： PURPOSE:To reduce the fluctuation of the flow rate on the downstream side of a TSA adsorbing tower and to make the flow rate and pressure of purified air constant by preliminarily increasing the inlet flow rate of the TSA adsorbing tower corresponding to the change-over time of the TSA adsorbing tower before the TSA adsorbing tower enters a pressurizing process. CONSTITUTION:The inlet guide blade 11 of an air compressor 12 is preliminarily operated by a control unit 12 a definite time before a TSA adsorbing tower 2 enters a pressurizing process at the time of the completion of a cooling process and the air compressor 1 is subjected to incremental operation. Next, the TSA adsorbing tower 2 enters the pressurizing process and a part of purified air is sent to the TSA adsorbing tower 2 through a pressure gas inlet change- over valve 10. Whereupon, the purified air is increased in quantity to be capable of being sent out in the same amount as the purified air before pressurization. By this constitution, the flow rate of the purified gas of the TSA adsorbing tower is always kept constant and the pressure of purified gas is kept almost constant to always perform stable operation.

10. 发明专利

JPH02306084A ARGON REFINING APPARATUS 失效
公开(公告)号：JPH02306084A
公开(公告)日：1990-12-19
申请号：JP12434489
申请日：1989-05-19
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： TSUSHIMA HIROSHI , NUNOMURA MASAYOSHI
IPC分类号： C01B23/00 , F25J3/04
摘要： PURPOSE:To condense and remove moisture at the inlet of an argon dehumidifying tower without necessity of a new cold source or a refrigerator by providing an argon cooler capable of thermally exchanging liquefied gas with crude argon gas. CONSTITUTION:Crude argon gas refined and separated by a chill separator 16 is pressurized by a compressor I, and fed to a catalyst tank 2. Hydrogen to be added is reacted with oxygen in the argon gas to produce moisture in the tank 2. Modified argon in which the oxygen heated to approx. 350 deg.C by the reaction is removed, is fed out, to remove the moisture, of an aftercooler 3 precooled by cooling water, then cooled by an argon cooler 4 cooled with liquid oxygen extracted from the separator, and the moisture is further condensed and removed. Thereafter, the moisture having approx. 0.01kgH2O/Nm Ar can be lowered to approx. 0.002kgH2O/Nm Ar in the inlet of the cooler 4 to be returned to the separator via a dehumidifying tower 5.

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