US20110132035A1 - Method And Apparatus For Providing Nitrogen - Google Patents
Method And Apparatus For Providing Nitrogen Download PDFInfo
- Publication number
- US20110132035A1 US20110132035A1 US12/528,713 US52871308A US2011132035A1 US 20110132035 A1 US20110132035 A1 US 20110132035A1 US 52871308 A US52871308 A US 52871308A US 2011132035 A1 US2011132035 A1 US 2011132035A1
- Authority
- US
- United States
- Prior art keywords
- nitrogen
- customer
- threshold
- gaseous
- requirements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 39
- 230000008016 vaporization Effects 0.000 claims description 18
- 238000009834 vaporization Methods 0.000 claims description 17
- 238000004821 distillation Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 10
- 239000006200 vaporizer Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/044—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a single pressure main column system only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04812—Different modes, i.e. "runs" of operation
- F25J3/04836—Variable air feed, i.e. "load" or product demand during specified periods, e.g. during periods with high respectively low power costs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/42—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/42—Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/42—One fluid being nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/62—Details of storing a fluid in a tank
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
A method and apparatus for providing nitrogen is provided.
Description
- The present invention relates to a method and apparatus for providing nitrogen. It is usual to provide a customer with nitrogen by means of a gas generating apparatus, such as a cryogenic air distillation apparatus, as well as a nitrogen store that provides gaseous nitrogen supplying the customer when the cryogenic apparatus is out of service and/or is not able to produce all the required flow.
- According to the invention, the gas generating apparatus is started only when it is more economical to use a gas store (in gaseous or liquid form) for providing a customer.
- As shown in
FIG. 1 , according to the prior art, a gas generator A, in particular for units present on a customer's site, is generally coupled to an emergency supply means B of the “bulk” type (liquid with evaporator or gas). - The generator is always in a condition to provide the customer via lines C, E. When the customer consumes more than the nominal amount (100%), the emergency supply means is started and transfers nitrogen via the lines D, E.
- Similarly, when the generator is out of service, the emergency supply means take over.
- In this mode of operation, the generator is started whatever the customer's consumption. In customer consumption phases that are low compared with what is nominal for the generator, the energy consumption and therefore the production cost is not optimal.
- Operating in this way according to the prior art is illustrated in
FIG. 3 . Attime 0, the customer consumes 20 Nm3/h of nitrogen, this flow being provided entirely by air distillation in a separating apparatus with a simple liquid injection column. As the customer's consumption increases, the production of the apparatus increases as a consequence to 40 and then 100 Nm3/h at 10 hours and 20 hours respectively. Now, when the customer's consumption reaches 150 Nm3/h, the separating apparatus continues to produce its maximum flow rate of 100 Nm3/h, the remainder being provided by vaporization of stored nitrogen to produce a flow rate of 50 Nm3/h. - When the consumption falls to 80 Nm3/h at 50 hours, the production of nitrogen by vaporization is stopped and the production of nitrogen by the distillation apparatus is reduced to 80 Nm3/h. Then, in order to follow the customer's consumption, the level of production by the apparatus is reduced to 40 and then 20 Nm3/h.
- According to one object of the invention, a method is provided for supplying nitrogen by means of an apparatus for producing gaseous nitrogen by air separation and by vaporization of liquid nitrogen, wherein:
- a) if the customer's requirements for gaseous nitrogen are below a first threshold, the customer is provided with nitrogen exclusively by vaporization of liquid nitrogen
- b) if the customer's requirements for gaseous nitrogen are greater than a second threshold, the second threshold being greater than the first threshold, the customer is provided with nitrogen at least partially by the apparatus for producing nitrogen.
- According to other objects of the invention:
-
- if the customer's requirements for nitrogen exceed a third threshold, greater than the second threshold, the customer is provided partially by the apparatus for producing nitrogen and partially by vaporization of liquid nitrogen;
- if the customer's requirements are between the second and third threshold, the customer is provided solely by the apparatus for producing nitrogen;
- if the customer's requirements for gaseous nitrogen are greater than the second threshold, the customer is provided with nitrogen solely by the apparatus for producing nitrogen;
- at least one of the first, second and third thresholds is variable according to the price of electricity and/or the price of liquid nitrogen and/or the quantity of liquid nitrogen in the storage vessel connected to the means of vaporization and/or the rate of change of the quantity of liquid nitrogen in the storage vessel;
- if the customer's requirements for gaseous nitrogen are greater than the second threshold or greater than the second threshold but below the third threshold, the apparatus for producing nitrogen produces gaseous nitrogen with a substantially constant flow rate and
a) if the customer's requirements for gaseous nitrogen are less than the substantially constant flow rate, the excess part of gaseous nitrogen is discharged to atmosphere and the rest of the gaseous nitrogen is conveyed to the customer;
b) if the customer's requirements for gaseous nitrogen are greater than or equal to the substantially constant flow rate, all the gaseous nitrogen flow is conveyed to the customer; - the apparatus for producing gaseous nitrogen is a cryogenic air distillation apparatus, and as the case may be liquid nitrogen is conveyed to the apparatus for producing gaseous nitrogen in order to participate in keeping it cold.
- According to another object of the invention, an apparatus for providing gaseous nitrogen is provided comprising an apparatus for producing gaseous nitrogen by separation of air, a liquid nitrogen vaporizer, a storage vessel, means for feeding the vaporizer with liquid nitrogen from the storage vessel, means for conveying gaseous nitrogen from the production apparatus to the customer, means for conveying gaseous nitrogen from the vaporizer to the customer and means for regulating at least one of the flows of gaseous nitrogen conveyed to the customer according to the price of electricity and/or the price of liquid nitrogen and/or of the quantity of liquid nitrogen in the storage vessel and/or the rate of change of the quantity of liquid nitrogen in the storage vessel.
- As the case may be, the apparatus for producing gaseous nitrogen is a cryogenic air distillation apparatus.
- The invention will now be described in greater detail with reference to the figures.
-
FIG. 2 is an apparatus for supplying nitrogen according to the invention.FIG. 4 is a graph illustrating the operating mode for this apparatus with the method according to the invention. - According to this invention, it is proposed to reverse the current philosophy. The customer is basically supplied by the “bulk” emergency supply means. When his requirements exceed a certain value, the generator supplants the “bulk” supply. This value is defined so that the cost of production by the generator becomes more economical than the “bulk” supply. It depends on the cost of energy and the cost of the bulk supply.
- Beyond the production capacity of the generator, the “bulk” supply supplements the production by the generator for providing the customer.
- Thus, as will be seen in
FIG. 4 , attime 0, the customer consumes 20 Nm3/h of nitrogen, this flow being provided entirely by vaporizing nitrogen coming from a storage vessel (or as the case may be by the inflow of gaseous nitrogen coming from a network). The customer's consumption then increases to 40 Nm3/h at 10 hours, nitrogen vaporization stops completely, production by the distillation apparatus commences as a consequence at 40 Nm3/h and reaches 100 Nm3/h after 20 hours. Now, when the customer's consumption reaches 150 Nm3/h, the separation apparatus continues to produce its maximum flow of 100 Nm3/h, the remainder being provided by vaporization of stored nitrogen to produce a flow rate of 50 Nm3/h. - When the consumption falls to 80 Nm3/h at instant 50 hours, the production of nitrogen by vaporization is stopped and the production of nitrogen by the distillation apparatus is reduced to 80 Nm3/h. Then, in order to follow the customer's consumption, the production level of the apparatus is reduced to 40 Nm3/h. Beyond this value, air distillation is stopped and in order to provide the basic consumption by the customer at 20 Nm3/h, vaporization of liquid nitrogen is started again.
- According to the invention, the air separation apparatus may produce, for values between 40 and 100 Nm3/h, the exact desired consumption according to the invention. As illustrated in
FIG. 2 , acomplete assembly 6 comprises a liquid nitrogen storage vessel 1 and at least onecold box 9 of the cryogenic generator. - The gas generator consists of a simple air separation column inside a
cold box 9, producinggaseous nitrogen 11 at the head of the column. - An expansion valve 7 placed on the
liquid line 3 reduces the pressure of the liquid intended for thevaporizer 5. - An optional connection for liquid nitrogen 8 to the
cold box 9 of the cryogenic generator ensures, at least partially, that the generator is kept cold by liquid injection. - The storage vessel is also connected to the
vaporizer 5 by theline 3. - The vaporizer is connected to the customer via a line 18.
- Between 0 and 10 hours in
FIG. 4 , theliquid 3 is withdrawn from the storage vessel 1, is expanded in the expansion valve 7 and then vaporized (and reheated to ambient temperature) in thevaporization system 5. Thecold box 9 does not operate. - Between 10 and 30 hours, the gas coming from the
cold box 9 is conveyed in the customer network through theline 11. No liquid flow coming from the storage vessel is vaporized in thevaporizer 5. - Between
time vaporizer 5, (or as the case may be upstream as described in patent application FR 0752579 filed on Jan. 9, 2007). - Between 40 and 60 hours, gas coming from the
cold box 9 is conveyed in the customer network through theline 11. No liquid flow coming from the storage vessel is vaporized in thevaporizer 5. - Between 60 and 70 hours in
FIG. 4 , theliquid 3 is once again withdrawn from the storage vessel 1, its pressure is reduced in the expansion valve 7, and it is then vaporized (and reheated to ambient temperature) in thevaporization system 5. Thecold box 9 does not function. - According to a variant of the invention, the air separation apparatus produces a fixed flow with a nominal pressure of 8.3 barg (8.6 barg max). Running is not at a reduced rate and the air compressor of the distillation air apparatus is at a fixed speed.
- If the customer does not take all the nitrogen produced by the apparatus, part of the nitrogen is vented to atmosphere via a discharge valve or regulating valve FV. This makes it possible to limit the pressure of the column (network pressure N2) to a limit value (PSH, around 7.9 barg), without having to discharge the compressor.
- If the customer has a peak consumption, the surplus flow comes from the storage vessel 1 via a liquid pressure reducer 7 (opening around 7.4 barg) which makes it possible to maintain the pressure in the customer's network.
-
- Starting up: the customer is provided with liquid.
- If the level in the storage vessel LT falls at a rate greater than an equivalent production rate judged to be economical according to the cost of liquid nitrogen and electrical energy (for example 20% of the nominal rate) the generator is started. The parameters of this start-up threshold could be established by the IHM. A sliding mean could be established over one to several hours in order to estimate the mean consumption rate so as to obtain a legible and reliable reading of the fall in level.
- If the customer's consumption falls strongly, the generator will stop if the flow provided to the customer by the generator is less than a flow threshold judged to be uneconomical according to the cost of liquid nitrogen and electrical energy (for example 20% of the nominal rate). The parameters of this stop threshold could be established by the IHM.
- The flow discharged to atmosphere is estimated by using the fact that this is a function of the Cv of the valve and of its opening, of the pressure PT, and of the temperature of the gas. The flow actually provided by the generator to the customer is then deduced therefrom by the difference between the nominal production flow from the generator and the flow discharged to atmosphere.
- Starting the generator, even in the case of low consumption, may be made necessary when the storage vessel contains only a little liquid (for example 10% of the maximum level) in the storage vessel in order to increase the duration of the custopmer's supply (via the generator). The consumption of liquid nitrogen is then limited to liquid injection (if there is any).
Claims (8)
1-7. (canceled)
8. A method for providing nitrogen by means of an apparatus for producing gaseous nitrogen by air separation and by vaporization of liquid nitrogen, wherein:
a) providing nitrogen to the customer exclusively by vaporization of liquid nitrogen if the customer's requirements for gaseous nitrogen are below a first threshold;
b) providing nitrogen to the customer at least partially by the apparatus for producing nitrogen if the customer's requirements for gaseous nitrogen are greater than a second threshold, the second threshold being greater than the first threshold.
9. The method for providing nitrogen as claimed in claim 8 , wherein if the customer's requirements for nitrogen exceed a third threshold, greater than the second threshold, the customer is provided partially by the apparatus for producing nitrogen and partially by vaporization of liquid nitrogen.
10. The method as claimed in claim 9 , wherein the customer's requirements are between the second and third threshold, and the customer is provided solely by the apparatus for producing nitrogen.
11. The method as claimed in claim 8 , wherein if the customer's requirements for gaseous nitrogen are greater than the second threshold, the customer is provided with nitrogen solely by the apparatus for producing nitrogen.
12. The method of claim 9 , wherein at least one of the first, second and third thresholds is variable according to the price of electricity and/or the price of liquid nitrogen and/or the quantity of liquid nitrogen in a storage vessel connected to the means of vaporization and/or the rate of change of the quantity of liquid nitrogen in the storage vessel.
13. The method of claim 9 , wherein if the customer's requirements for gaseous nitrogen are greater than the second threshold and as the case may be below the third threshold, the apparatus for producing nitrogen produces gaseous nitrogen with a substantially constant flow rate and
a) if the customer's requirements for gaseous nitrogen are less than the substantially constant flow rate, the excess part of gaseous nitrogen is discharged to atmosphere and the rest of the gaseous nitrogen is conveyed to the customer.
b) if the customer's requirements for gaseous nitrogen are greater than or equal to the substantially constant flow rate, all the gaseous nitrogen flow is conveyed to the customer.
14. The method of claim 8 , wherein the apparatus for producing gaseous nitrogen is a cryogenic air distillation apparatus, and as the case may be liquid nitrogen is conveyed to the apparatus for producing gaseous nitrogen in order to participate in keeping it cold.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0753567A FR2913104B1 (en) | 2007-02-28 | 2007-02-28 | PROCESS AND APPARATUS FOR SUPPLYING NITROGEN. |
FR0753567 | 2007-02-28 | ||
PCT/FR2008/050262 WO2008113928A2 (en) | 2007-02-28 | 2008-02-18 | Method an apparatus for providing nitrogen |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110132035A1 true US20110132035A1 (en) | 2011-06-09 |
Family
ID=38752525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/528,713 Abandoned US20110132035A1 (en) | 2007-02-28 | 2008-02-18 | Method And Apparatus For Providing Nitrogen |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110132035A1 (en) |
EP (1) | EP2129983A2 (en) |
JP (1) | JP2010521642A (en) |
CN (1) | CN101711336B (en) |
FR (1) | FR2913104B1 (en) |
WO (1) | WO2008113928A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116105074A (en) * | 2022-12-07 | 2023-05-12 | 北京航天试验技术研究所 | High-pressure nitrogen gas supply device and control method thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5425612B2 (en) * | 2009-12-24 | 2014-02-26 | 住友重機械工業株式会社 | Ozone gas concentrator |
FR3069237B1 (en) * | 2017-07-19 | 2019-08-23 | Gaztransport Et Technigaz | DEVICE FOR THE PRODUCTION AND DISTRIBUTION OF NITROGEN, PARTICULARLY FOR A TRANSPORT VESSEL OF LIQUEFIED GAS |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526595A (en) * | 1982-10-27 | 1985-07-02 | Air Products And Chemicals, Inc. | Plant for producing gaseous nitrogen |
US5157927A (en) * | 1990-04-10 | 1992-10-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for the production of gaseous nitrogen and system for supplying corresponding nitrogen |
US6273936B1 (en) * | 1998-10-09 | 2001-08-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and plant for producing a variable gas output |
US20050172666A1 (en) * | 2002-07-09 | 2005-08-11 | Alain Guillard | Method of operating a production plant and production plant |
US7249470B2 (en) * | 2005-04-07 | 2007-07-31 | Praxair Technology, Inc. | Method of controlling liquid production utilizing an expert system controller |
US20080184736A1 (en) * | 2004-06-29 | 2008-08-07 | Jean-Marc Peyron | Method And Installation For The Emergency Back-Up Supply Of A Gas Under Pressure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2873473B2 (en) * | 1989-11-07 | 1999-03-24 | 株式会社大分サンソセンター | Air liquefaction separation method |
JP3220755B2 (en) * | 1991-09-27 | 2001-10-22 | 日本酸素株式会社 | Air liquefaction separation method and apparatus |
DE4135302A1 (en) * | 1991-10-25 | 1993-04-29 | Linde Ag | DEVICE FOR LOW TEMPERATURE DISPOSAL OF AIR |
JPH0829055A (en) * | 1994-07-13 | 1996-02-02 | Toshiba Corp | Operation controller for oxygen manufacturing plant |
JPH1144470A (en) * | 1997-07-24 | 1999-02-16 | Mitsui Eng & Shipbuild Co Ltd | Distilled water and method of supplying distilled water and cool water simultaneously |
JP4450503B2 (en) * | 2000-12-14 | 2010-04-14 | 日本エア・リキード株式会社 | Product gas backup device |
CN1223786C (en) * | 2002-12-20 | 2005-10-19 | 中国科学院理化技术研究所 | Gasifier of low-temperature liquid |
-
2007
- 2007-02-28 FR FR0753567A patent/FR2913104B1/en not_active Expired - Fee Related
-
2008
- 2008-02-18 CN CN200880006178XA patent/CN101711336B/en not_active Expired - Fee Related
- 2008-02-18 EP EP08762110A patent/EP2129983A2/en not_active Withdrawn
- 2008-02-18 WO PCT/FR2008/050262 patent/WO2008113928A2/en active Application Filing
- 2008-02-18 JP JP2009551936A patent/JP2010521642A/en active Pending
- 2008-02-18 US US12/528,713 patent/US20110132035A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526595A (en) * | 1982-10-27 | 1985-07-02 | Air Products And Chemicals, Inc. | Plant for producing gaseous nitrogen |
US5157927A (en) * | 1990-04-10 | 1992-10-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for the production of gaseous nitrogen and system for supplying corresponding nitrogen |
US6273936B1 (en) * | 1998-10-09 | 2001-08-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and plant for producing a variable gas output |
US20050172666A1 (en) * | 2002-07-09 | 2005-08-11 | Alain Guillard | Method of operating a production plant and production plant |
US20080184736A1 (en) * | 2004-06-29 | 2008-08-07 | Jean-Marc Peyron | Method And Installation For The Emergency Back-Up Supply Of A Gas Under Pressure |
US7249470B2 (en) * | 2005-04-07 | 2007-07-31 | Praxair Technology, Inc. | Method of controlling liquid production utilizing an expert system controller |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116105074A (en) * | 2022-12-07 | 2023-05-12 | 北京航天试验技术研究所 | High-pressure nitrogen gas supply device and control method thereof |
Also Published As
Publication number | Publication date |
---|---|
FR2913104B1 (en) | 2009-11-27 |
EP2129983A2 (en) | 2009-12-09 |
CN101711336B (en) | 2012-09-05 |
WO2008113928A3 (en) | 2010-03-11 |
JP2010521642A (en) | 2010-06-24 |
WO2008113928A2 (en) | 2008-09-25 |
FR2913104A1 (en) | 2008-08-29 |
CN101711336A (en) | 2010-05-19 |
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