EP4558766A1 - Installation et procédé de liquéfaction d'hydrogène - Google Patents
Installation et procédé de liquéfaction d'hydrogèneInfo
- Publication number
- EP4558766A1 EP4558766A1 EP23733349.7A EP23733349A EP4558766A1 EP 4558766 A1 EP4558766 A1 EP 4558766A1 EP 23733349 A EP23733349 A EP 23733349A EP 4558766 A1 EP4558766 A1 EP 4558766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrogen
- circuit
- gas
- heat exchanger
- recovery pipe
- 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.)
- Granted
Links
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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0005—Light or noble gases
- F25J1/001—Hydrogen
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
- F25J1/004—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
- F25J1/0042—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by liquid expansion with extraction of work
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
- F25J1/005—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by expansion of a gaseous refrigerant stream with extraction of work
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0062—Light or noble gases, mixtures thereof
- F25J1/0065—Helium
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0062—Light or noble gases, mixtures thereof
- F25J1/0067—Hydrogen
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
- F25J1/0202—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration in a quasi-closed internal refrigeration loop
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0244—Operation; Control and regulation; Instrumentation
- F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0292—Refrigerant compression by cold or cryogenic suction of the refrigerant gas
-
- 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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/82—Processes or apparatus using other separation and/or other processing means using a reactor with combustion or catalytic reaction
-
- 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
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
-
- 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
- F25J2245/90—Processes or apparatus involving steps for recycling of process streams the recycled stream being boil-off gas from storage
-
- 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
- F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
-
- 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
- F25J2290/60—Details about pipelines, i.e. network, for feed or product distribution
-
- 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
Definitions
- the invention relates to an installation and a process for liquefying hydrogen.
- the invention relates more particularly to a hydrogen liquefaction installation comprising a hydrogen circuit having an upstream end intended to be connected to a source of gaseous hydrogen and a downstream end connected to at least one cryogenic storage of liquefied hydrogen of the installation, the cryogenic storage being provided with a withdrawal pipe configured to allow the supply of liquefied hydrogen to at least one tank to be filled, in particular a mobile tank, the installation comprising a cold box housing a set of exchangers (s) of heat in thermal exchange with the hydrogen circuit, the installation comprising a cooling device in thermal exchange with at least part of the assembly of heat exchanger (s) configured to cool the circuit of hydrogen, said cooling device comprising a cryogenic refrigerator with a refrigeration cycle of a cycle gas in a working circuit, the cycle gas comprising at least one of: hydrogen, helium, the circuit of the refrigerator comprising a cycle gas compression member, a cycle gas cooling member, a cycle gas expansion member and a cycle gas reheating member, the installation comprising a gas recovery pipe vaporization gas
- Boil-off in truck loading systems and tanks in hydrogen liquefaction plants can cause losses of up to 15% of production. These evaporation losses can of course be recovered, reheated, recompressed after storage and reinjected into the liquefier. This requires a loss recirculation system and adequate sizing of the liquefier.
- Another solution to minimize the production of these vaporization gases consists of subcooling the liquid hydrogen produced.
- the cold present in storage does not generally compensate for all the heat generated by truck filling operations. This generates an increase in storage pressure and a loss of hydrogen.
- the return temperature of the vapors from the trucks to be filled may be too high to be liquefied directly.
- Depressurization is generally intermittent.
- the lines or pipes heat up between two truck loadings and the gas returns to the liquefier are even hotter and more difficult to liquefy.
- An aim of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
- the installation according to the invention is essentially characterized in that the downstream end of the recovery pipe is connected to the interior of the cold box and comprises, prior to its connection to the hydrogen circuit, a portion in thermal exchange with at least one exchanger of the set of heat exchanger(s).
- This configuration makes it possible to conserve or maintain the highest possible pressure in the heat exchanger which cools this recovered vaporization gas (at the time of liquefaction) while limiting the pressure increase necessary in cases where the pressure is low in storage or trucks supplying this vaporization gas.
- This architecture has a low impact on the capacity of the liquefier.
- embodiments of the invention may include one or more of the following characteristics: the downstream end of the recovery pipe comprises a member for expanding the flow of vaporization gas preferably located between the portion in exchange thermal with the at least one exchanger of the set of heat exchanger(s) and the connection to the hydrogen circuit, the set of heat exchanger(s) comprises a plurality of heat exchangers arranged in series between the upstream end and the downstream end of the circuit hydrogen, the connection of the downstream end of the recovery pipe with the hydrogen circuit being located downstream of a first passage of the hydrogen circuit in the last heat exchanger in series, the first passage of the circuit hydrogen in the last heat exchanger in series comprises a hydrogen catalysis section configured to carry out the conversion of at least a part of the Ortho hydrogen into Para hydrogen, downstream of the connection, the hydrogen circuit performs a second passage in the last heat exchanger, the second passage in the last heat exchanger does not include a section for catalyzing Ortho hydrogen into Para hydrogen, the hydrogen circuit comprises, downstream of the second passage in the last heat exchanger, a hydrogen flow expansion
- the invention also relates to a hydrogen liquefaction process using an installation according to any one of the characteristics above or below, comprising a step of recovering vaporization gas via the recovery pipe, a step of cooling the this vaporization gas recovered in the cold box, a step of expanding this vaporization gas in the cold box, a step of mixing this expanded vaporization gas with the flow of hydrogen to be cooled
- the process comprises at least one of: a step of expanding the mixture of the vaporization gas and the flow of hydrogen to be cooled, a step of expanding the mixture of the vaporization gas and the flow of hydrogen to be cooled.
- the invention may also relate to any alternative device or method comprising any combination of the characteristics above or below within the scope of the claims.
- FIG. 1 is a schematic and partial view illustrating a first example of structure and operation of an installation in a first configuration
- FIG. 2 is a schematic and partial view illustrating a detail of the structure and operation of such an installation according to a first possible embodiment
- FIG. 3 is a schematic and partial view illustrating this first example of installation in a second configuration
- FIG. 4 is a schematic and partial view illustrating this first example of installation in a third configuration
- FIG. 5 is a schematic and partial view illustrating this first example of installation in a fourth configuration
- FIG. 6 is a schematic and partial view illustrating this first example of installation in a fifth configuration
- FIG. 7 is a schematic and partial view illustrating this first example of installation in a sixth configuration
- FIG. 8] is a schematic and partial view illustrating this first example of installation in a seventh configuration
- FIG. 9 is a schematic and partial view illustrating the structure and operation of a second exemplary embodiment in a first configuration
- FIG. 10 is a schematic and partial view illustrating this second example of installation in a second configuration
- FIG. 11 is a schematic and partial view illustrating this second example of installation in a third configuration
- FIG. 12 is a schematic and partial view illustrating this second example of installation in a fourth configuration
- FIG. 13 is a schematic and partial view illustrating a detail of the structure and operation of another possible embodiment of the installation.
- the hydrogen liquefaction installation 1 illustrated in [Fig. 1] includes a circuit 2 of hydrogen to be cooled/liquefied.
- This hydrogen circuit 2 has an upstream end 21 intended to be connected to a source 23 of gaseous hydrogen and a downstream end 22 connected to at least one cryogenic storage 8 of liquefied hydrogen produced by the installation 1.
- the source 23 of gaseous hydrogen may include an electrolyzer, a gaseous hydrogen network and/or any other hydrogen production device.
- the cryogenic storage 8 comprises for example a cryogenic tank insulated under vacuum and is provided with at least one withdrawal pipe 11 configured to allow the supply of liquefied hydrogen to at least one tank 19 to be filled (for example a cryogenic tank 19 transported by truck) .
- the installation 1 comprising a cold box 18, that is to say an insulated and preferably sealed cryogenic enclosure which houses at least part of the cryogenic liquefaction members forming a liquefier 31.
- the cold box 18 houses in particular a set of heat exchanger(s) 3, 4, 5, 6 in thermal exchange and a cold part of the hydrogen circuit 2 in thermal exchange with these exchangers 3, 4, 5, 6 heat.
- the installation 1 further comprises a cooling device in thermal exchange with at least part of the set of heat exchanger(s) 3, 4 configured to produce cold power which is used to cool the hydrogen circuit 2.
- This cooling device preferably comprises a cryogenic refrigerator 7 with a refrigeration cycle of a cycle gas in a working circuit. That is to say, the working circuit subjects the cycle gas to a thermodynamic cycle which brings this cycle gas to a cold end at a cryogenic temperature to provide cold cooling power.
- the cycle gas comprising for example at least one of: hydrogen, helium.
- the working circuit of the refrigerator 7 comprising a member 9 for compressing the cycle gas (one or more compressors in series and/or in parallel), a member 3, 4 for cooling the cycle gas, a member 10 for expanding the gas cycle (turbine(s) and/or expansion valve(s)) and a member 6, 5, 4, 3 for heating the cycle gas.
- the gas cooling and heating members may include heat exchangers and in particular counter-current heat exchangers ensuring simultaneous heating and cooling of the cycle gas in the working circuit.
- the installation 1 further comprises at least one pipe 12 for recovering vaporization gas.
- This recovery pipe 12 is provided with at least one upstream end connected to the storage 8 and/or intended to be connected to a tank 19 to be filled and a downstream end connected to the hydrogen circuit 2 to recover the vaporization gas with a view to of its liquefaction and its mixing with the liquid hydrogen produced.
- downstream end of the recovery pipe 12 is connected to the hydrogen circuit 2 inside the cold box 18.
- downstream end of the recovery pipe 12 is in thermal exchange with at minus one exchanger 5, 6 of the set of heat exchanger(s) 3, 4, 5, 6 for its cooling.
- the assembly of heat exchanger(s) 3, 4, 5, 6 of the cold box preferably comprises a plurality of heat exchangers arranged in series between the upstream end 21 and the downstream end 22 of hydrogen circuit 2.
- the connection of the downstream end of the recovery pipe 12 with the hydrogen circuit 2 is located for example downstream of a first passage of the hydrogen circuit 2 in the last 6 heat exchanger in series.
- this first passage of the hydrogen circuit 2 in the last heat exchanger 6 preferably comprises a hydrogen catalysis section 29 configured to carry out the conversion of at least part of the Ortho hydrogen into Para hydrogen .
- the hydrogen circuit 2 Downstream of this first passage in the catalysis section 29 of the heat exchanger 6, the hydrogen circuit 2 preferably comprises an expansion member 30 such as an expansion valve for example.
- the hydrogen circuit 2 which received the cooled and expanded vaporization gas can make a second passage in the last heat exchanger 6 for additional cooling.
- This second heat exchange is preferably located in another section of the heat exchanger 6 not including a catalysis section.
- the hydrogen circuit 2 can include a member 23 for expanding the hydrogen flow.
- This trigger member 23 is for example a final trigger member in the box cold and includes for example an expansion valve and/or a cryogenic expansion turbine. The fluid thus expanded is liquefied and can then be supplied to cryogenic storage via appropriate pipes.
- the recovered hydrogen gas is expanded twice in the liquefaction agent. A first time at the outlet of the last catalytic heat exchanger 6, then during a second pass through the exchanger 6 without catalytic conversion and finally finish with a final expansion up to the final pressure level planned for storage 8.
- the recovery pipe 12 preferably comprises a first upstream end connected to an upper end of the storage 8 and a second upstream end intended to be connected to the upper end of a mobile tank 19.
- the first and second upstream ends of the recovery pipe 12 are connected to the downstream end of the recovery pipe via respectively two separate branches 121, 122 of pipes. These two branches 121, 122 can be provided with respective valve(s) 221, 222.
- downstream end 22 of the hydrogen circuit may have two ends connected respectively to the lower and upper parts of the storage via respective valve(s) 201, 202 to fill the storage 8 in its liquid phase or in its gas phase. .
- the withdrawal pipe 11 may include an upstream end connected to the storage 8 (lower part) and preferably provided with a valve 111 and two downstream ends.
- a first downstream end, provided with a valve 112 can be provided to be connected in a detachable manner to a tank to fill with liquid (in the lower part).
- the second downstream end of the withdrawal pipe 11 can be provided with a valve 113 and can be connected to the second upstream end of the gas recovery pipe 12 (branch 122).
- This fluid connection between the withdrawal pipe 11 and the branch 122 allows liquid to be injected into the reservoir 19 at its upper part (rain filling for example).
- closed valves are shown in black while open valves are shown in white.
- the hydrogen from source 23 is liquefied by the liquefier 31 and distributed into the storage(s) 8 by the pipes of circuit 2.
- the gas recovery valves 222 of the mobile tank(s) are closed. Hydrogen can be supplied to storage in its lower part.
- the hydrogen supplied by the liquefier 31 can be sub-cooled in order to maintain the pressure of the storage 8 and combat their thermal entry.
- the pressure of storage 8 can be regulated by valves 201 and 202 which ensure filling from the bottom and/or from the top.
- the valve 221 of the first downstream end of the vaporization gas recovery pipe from storage 8 can be opened to keep this pipe 121, 12 cold.
- a mobile tank 19 to be filled is connected to the first downstream end of the withdrawal pipe 11. This tank 19 is also connected to the second upstream end of the recovery pipe 12 (branches 122).
- the pressure in the tank 19 (for example between 3 and 10 bar) can be reduced to a level lower than the pressure P8 in the storage 8 (for example a few millibars below P8). This is done to allow liquid filling of the reservoir 19 from storage by pressure differential (without pump).
- the hydrogen present in tank 19 is generally predominantly gaseous (from 1 to 10% liquid phase) and at a temperature between 100K and 25K.
- the first part of the hot hydrogen recovered can be sent to a recovery system 32 via a parallel line provided with a valve 322. When the temperature in the tank 19 has dropped to a determined level, for example between 50K and 30K , it is possible to return the gas to the liquefier (valve 222 open).
- This gaseous hydrogen will be liquefied in the liquefier 31 as described previously and will be able to return to storage 8 as long as the pressure in tank 19 is greater than the pressure of storage 8 (plus the pressure losses of the circuits).
- the depressurization of the tank 19 can be carried out towards the recovery system 32 cf. [Fig. 4].
- pressure balancing can be carried out between the tank 19 and the storage 8 (see [Fig. 5]: valves 222 and 221 open) followed by pressurization of the storage by the liquefier (valve 201 open see [Fig. 5]). That is to say that the gas is transferred from the tank 19 to the storage via the branches 122 then 121 of the recovery pipe 12.
- the tank 19 reached a pressure P19 lower than the pressure P8 of the storage 8. Then, as illustrated in [Fig. 6], the reservoir 19 can be filled with liquid. Liquid hydrogen can be transferred from storage 8 to the upper part of tank 19 via the withdrawal pipe 11 and the valve 113 of the branch connected to the gas recovery pipe.
- the liquid coming from storage 8 can be cold enough to maintain the pressure P19 in the tank 19 by condensing the vapors there.
- the pressure of the storage 8 can be maintained by the injection of liquid hydrogen coming from the liquefier into the vapor phase of the storage (filling from the top via the branch 121 of the gas recovery line 12 with the valve 221 open).
- This hydrogen can come from circuit 2 of hydrogen which has been expanded and has been reheated in a heat exchanger.
- the corresponding cold can therefore be recovered inside the liquefier 31 during this phase rather than injecting heat into the storage 8 via a pressurization unit (“PBU”).
- PBU pressurization unit
- the tank 19 can still have a pressure P19 close to the pressure P8 of the storage 8.
- the tank 19 is filled beyond half of its capacity (for example between 85% and 95% of its capacity). capacity) but its pressure should preferably be reduced to be able to hit the road and not lose hydrogen during the journey.
- Tank pressure 19 for road use may be dependent on local regulations.
- This depressurization can be carried out for example via degassing to the recovery system 32 (valve 322 open).
- the pressure of the tank 19 can be brought, for example, to 1.5 bar.
- the installation can continue to control the pressure of storage 8, for example by injecting cooled sub-ref liquid hydrogen at the top and/or bottom of storage 8 by controlling valves 202 and 201. Cf. [ Fig. 7].
- FIG.8 illustrates an alternative embodiment which differs from [Fig. 1] only in that the branch 122 of the recovery pipe 12 intended to recover the vaporization gas from the tank 19 comprises a compression member 24 such as a cryogenic type compressor (cold compressor configured to compress vapors at temperatures between 25 and 100K). As illustrated, a bypass line 124 from the compressor 24 and a set of valve(s) 224, 324 may be provided to ensure or not the passage of all or part of the flow into the compressor 24.
- a compression member 24 such as a cryogenic type compressor (cold compressor configured to compress vapors at temperatures between 25 and 100K).
- a bypass line 124 from the compressor 24 and a set of valve(s) 224, 324 may be provided to ensure or not the passage of all or part of the flow into the compressor 24.
- This compression member 24 allows better recovery of the vapors from the tank 19 on the vapor recovery line 12 towards the liquefier 31.
- This compression member 24 makes it possible to increase the pressure of the hydrogen vapors recovered with a view to its recovery in the storage 8 and/or the liquefier 31 during phases where the pressures available in the tank 19 are not sufficient to ensure this. transfer by pressure difference.
- the advantage of a cryogenic compressor 24 compared to a conventional compressor at room temperature is its reduced size due to the greater density of cold hydrogen. The cold temperature of the hydrogen is preserved during compression and the cold compressed hydrogen can be easily recovered in storage 8 or to liquefier 31 to be liquefied again.
- the configuration of [Fig. 8] corresponds to the configuration of [Fig. 1].
- the hydrogen from circuit 2 is liquefied by the liquefier 31 and is distributed in the storage 8. This hydrogen can be sub-refrigerated in order to control and maintain the pressure in the storage 8 and combat their thermal entry.
- This pressure of storage 8 can be regulated via valves 202, 201 (top/bottom filling). As illustrated, valve 221 on the vaporization gas recovery branch of storage 8 can be opened to keep this line cold.
- the valves 222, 322 of the vaporized gas recovery branch of the tanks 19 are closed.
- the compressor 24 is preferably stopped.
- FIG. 9 illustrates a depressurization configuration of a tank 19 to be filled which corresponds to the configuration of the [Fig. 3]. Note that in this embodiment shown, the withdrawal pipe 11 is not connected to the upper part of the tank (via branch 122), but of course it could be.
- the pressure (for example from 3 to 10 bar) of the tank 19 can be reduced below the pressure of the storage 8.
- the hydrogen present in the tank 19 is in principle mainly gaseous (from 1 to 10% liquid phase) and at a temperature for example between 100K and 25K.
- a first part of the hot hydrogen recovered can be sent to the recovery system 32 (valve 322 open).
- the recovered gas can be sent to the liquefier 31 (pipe 12 valves 222, 224 open.
- This hydrogen will be liquefied as described previously (passage(s) in the exchanger 6 and expansion) then will supply the storage 8 as long as the pressure of the tank 19 remains higher than the pressure in the storage 8 (plus the pressure losses of the circuits concerned).
- the compressor 24 is preferably not used in this first depressurization phase but can be cooled by the vapors returning to the liquefier 31. As illustrated in [Fig. 10], to finalize the depressurization of the tank 19, this pressure can be lowered under the pressure of the storage 8.
- the compressor 24 can be used to suck the vapors from the tank 19 and send them to the storage 8.
- the return to the liquefier 31 can be closed during this phase.
- the pressure of the storage 8 can always be regulated by the valves 202, 201. There is therefore a transfer of gas from tank 19 to storage 8.
- the tank 19 has reached a pressure lower than the pressure of the storage 8. This represents the main part of the filling of the tank 19 with liquid.
- Liquid hydrogen is transferred from storage 9 to tank 8 through the withdrawal pipe 11 (valve 111 open).
- the pressure of the storage 8 can be maintained by the injection of hydrogen coming from the liquefier 31 (valves 201 and/or 202).
- the pressure of the tank 19 can be maintained under the pressure of the storage 8 thanks to the compressor 24. Cf. [Fig. 10].
- the tank 19 can still be at a pressure close to the pressure of the storage 8.
- the filling level of the tank 19 is relatively high (for example between 85% and 95%) but its pressure may have to be reduced to be able to hit the road and not lose hydrogen during the journey. This road pressure may be dependent on local regulations.
- the compressor 24 can make it possible to reduce this pressure in the tank 19 to the required starting pressure (without using the valve 332 towards the recovery system or avoiding the loss of hydrogen during the journey).
- the gas from tank 19 is pumped to storage 8 (see [Fig. 12]).
- the cold compressor 24 can be used to also reduce the pressure of the storage 8 without providing a supply of cooled sub-refrigeration hydrogen. This increases the production capacity of the liquefier.
- FIG. 13 illustrates an alternative embodiment of the circuit returning the vaporization gases recovered within the cold box 18 of the liquefier 31.
- the embodiment of [Fig. 13] differs from that of [Fig. 2] in that the downstream end of the recovery pipe 12 comprises, upstream of the connection to the hydrogen circuit 2, a catalysis section 25 (for example a catalytic converter) configured to carry out the conversion of at least one part of Para hydrogen into Ortho hydrogen.
- a catalysis section 25 for example a catalytic converter
- the recovery pipe 12 comprises a diversion portion 26 and a set of valve(s) 27, 28 configured to ensure or not the passage of the flow of vaporization gas in the catalysis section 25.
- the specification required for hydrogen liquefaction 31 is to provide a minimum conversion of around 95% Para for the hydrogen leaving the liquefaction.
- the presence of catalyst in the last exchanger(s) 5, 6 generally allows a conversion between 98% to 100% depending on the pressure of the hydrogen.
- the gaseous hydrogen returning from the tanks 19 to be filled comes from the vaporization of liquid and generally consists of hydrogen in the Para form in a proportion of between 98% and 100%.
- the installation 1 is not suitable for recovering hydrogen vapors that are too hot because this can disrupt the operation of the liquefier 31.
- these recovered vaporization gases can have a temperature between 50K and 25K.
- the vapors are therefore converted from the Para form to the Ortho form then liquefied in the heat exchanger 6/expander 20 and are then mixed in the hydrogen of circuit 2 before supplying the storage 8 (as described previously).
- catalytic converter 25 is in principle only necessary when the hydrogen gas arrives hot enough (for example at the start of depressurization of the tank 19 to be filled) and sufficiently under pressure (pressure typically between 3 and lObar).
- the diversion system 26, 27 and in particular the valve(s) can be configured to ensure passage through the conversion catalysis from function to function. of the gas return temperature which can be measured by a temperature sensor 33 in the recovery pipe 12.
- the circuit 28 is closed and the direct supply valve 27 of the exchanger 6 is opened to reduce the system load loss.
- This control of the depressurization of the tank 19 limits the flow rate in relation to the capacity of the liquefier (a control over the outlet temperature of the reliquefied gas exchanger can be provided).
- the installation could include several storage areas 8 and/or several pipes 11 for filling and recovering 12 of vaporized gases.
- a cold compressor 24 could be arranged in parallel with the recovery pipe, to transfer the gas to the liquefier, particularly in the case where several tanks are treated simultaneously.
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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2207466A FR3138194B1 (fr) | 2022-07-21 | 2022-07-21 | Installation et procédé de liquéfaction d’hydrogène |
| PCT/EP2023/066540 WO2024017549A1 (fr) | 2022-07-21 | 2023-06-20 | Installation et procédé de liquéfaction d'hydrogène |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4558766A1 true EP4558766A1 (fr) | 2025-05-28 |
| EP4558766B1 EP4558766B1 (fr) | 2026-04-15 |
Family
ID=83280083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23733349.7A Active EP4558766B1 (fr) | 2022-07-21 | 2023-06-20 | Installation et procédé de liquéfaction d'hydrogène |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20260036361A1 (fr) |
| EP (1) | EP4558766B1 (fr) |
| JP (1) | JP2025523130A (fr) |
| KR (1) | KR20250038701A (fr) |
| CN (1) | CN119585581A (fr) |
| AU (1) | AU2023310568A1 (fr) |
| CA (1) | CA3261442A1 (fr) |
| FR (1) | FR3138194B1 (fr) |
| WO (1) | WO2024017549A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4641123A1 (fr) * | 2024-04-25 | 2025-10-29 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Installation et un procédé de réfrigération d'un fluide à température cryogénique |
| FR3164773A1 (fr) * | 2024-07-18 | 2026-01-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procédé et appareil de liquéfaction de CO2 |
| US20260049761A1 (en) * | 2024-08-14 | 2026-02-19 | Air Products And Chemicals, Inc. | Apparatus and process for hydrogen recycling to avoid liquefier shutdown due to insufficient feed of hydrogen |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL298578A (fr) * | 1963-09-06 | |||
| AU4495797A (en) * | 1997-09-22 | 1999-04-12 | Fermin Viteri | Clean air engines for transportation and other power applications |
| US9816754B2 (en) * | 2014-04-24 | 2017-11-14 | Air Products And Chemicals, Inc. | Integrated nitrogen removal in the production of liquefied natural gas using dedicated reinjection circuit |
| FR3049341B1 (fr) * | 2016-03-23 | 2019-06-14 | Cryostar Sas | Systeme de traitement d'un gaz issu de l'evaporation d'un liquide cryogenique et d'alimentation en gaz sous pression d'un moteur a gaz |
| US20190162469A1 (en) * | 2017-11-27 | 2019-05-30 | Air Products And Chemicals, Inc. | Method and system for cooling a hydrocarbon stream |
| KR102122874B1 (ko) * | 2017-07-28 | 2020-06-15 | 가부시키가이샤 고베 세이코쇼 | 가연성 가스 공급 유닛 및 수소 스테이션 |
| CN109059419B (zh) * | 2018-05-28 | 2020-07-17 | 江苏国富氢能技术装备有限公司 | 氢气液化预冷工艺 |
| FR3112198B1 (fr) * | 2020-07-03 | 2022-07-22 | Air Liquide | Installation et procédé de réfrigération d’hydrogène |
| FR3099558B3 (fr) * | 2020-11-17 | 2021-07-09 | Air Liquide | Installation de réfrigération d’hydrogène |
| FR3125115B1 (fr) * | 2021-07-08 | 2024-05-10 | Air Liquide | Installation et procédé de liquéfaction d’hydrogène. |
-
2022
- 2022-07-21 FR FR2207466A patent/FR3138194B1/fr active Active
-
2023
- 2023-06-20 EP EP23733349.7A patent/EP4558766B1/fr active Active
- 2023-06-20 AU AU2023310568A patent/AU2023310568A1/en active Pending
- 2023-06-20 US US18/995,272 patent/US20260036361A1/en active Pending
- 2023-06-20 JP JP2025502347A patent/JP2025523130A/ja active Pending
- 2023-06-20 KR KR1020257004723A patent/KR20250038701A/ko active Pending
- 2023-06-20 WO PCT/EP2023/066540 patent/WO2024017549A1/fr not_active Ceased
- 2023-06-20 CA CA3261442A patent/CA3261442A1/fr active Pending
- 2023-06-20 CN CN202380055018.9A patent/CN119585581A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4558766B1 (fr) | 2026-04-15 |
| CA3261442A1 (fr) | 2024-01-25 |
| KR20250038701A (ko) | 2025-03-19 |
| FR3138194B1 (fr) | 2024-11-22 |
| JP2025523130A (ja) | 2025-07-17 |
| CN119585581A (zh) | 2025-03-07 |
| WO2024017549A1 (fr) | 2024-01-25 |
| FR3138194A1 (fr) | 2024-01-26 |
| AU2023310568A1 (en) | 2025-03-06 |
| US20260036361A1 (en) | 2026-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2024017549A1 (fr) | Installation et procédé de liquéfaction d'hydrogène | |
| EP3628911B1 (fr) | Dispositif et procédé de remplissage de réservoirs de gaz sous pression | |
| EP3650741B1 (fr) | Procédé et installation de stockage et de distribution d'hydrogène liquéfié | |
| EP3510317B1 (fr) | Installation, procédé pour stocker et reliquéfier un gaz liquéfié et véhicule de transport associé | |
| WO2019145342A1 (fr) | Procede et systeme de traitement de gaz d'une installation de stockage de gaz pour un navire de transport de gaz | |
| WO2022002494A1 (fr) | Installation et procédé de réfrigération d'hydrogène | |
| WO2014106697A1 (fr) | Dispositif de réfrigération et/ou de liquéfaction et procédé correspondant | |
| FR3066249A1 (fr) | Dispositif et procede de refroidissement de gaz liquefie et/ou de gaz d'evaporation naturelle de gaz liquefie | |
| WO2023280549A1 (fr) | Installation et procédé de liquéfaction d'hydrogène. | |
| EP4435258B1 (fr) | Dispositif et procédé de compression | |
| WO2021064318A1 (fr) | Fluide réfrigérant destiné à un circuit de fluide réfrigérant d'un système de traitement de gaz naturel | |
| EP3862618B1 (fr) | Procédé de livraison de gaz liquéfié | |
| WO2025162617A1 (fr) | Installation et procédé de liquéfaction d'un fluide cryogénique | |
| EP4596950B1 (fr) | Installation et procédé de stockage et de distribution de fluide cryogénique | |
| FR3146506A1 (fr) | Installation de production et de distribution d’un carburant sous forme de fluide cryogénique | |
| WO2020109607A1 (fr) | Dispositif de generation de gaz sous forme gazeuse a partir de gaz liquefie | |
| FR3154113A1 (fr) | Procédé et installation de production d'hydrogène liquide | |
| FR3136540A3 (fr) | Installation et procédé de production d’un fluide cryogénique | |
| EP4567358A1 (fr) | Installation et procédé de production d'hydrogène liquéfié | |
| WO2023143793A1 (fr) | Installation et procédé de stockage de gaz liquéfié. | |
| FR3163146A1 (fr) | Installation et procédé de liquéfaction d’hydrogène | |
| FR3152054A1 (fr) | Dispositif, installation et procédé de maintien en froid d’un stockage de gaz liquéfié | |
| FR3140154A1 (fr) | Installation et procédé de production d’un fluide cryogénique | |
| FR3148081A1 (fr) | Dispositif et procédé de pré-refroidissement d’un fluide cible à liquéfier | |
| FR3057941A1 (fr) | Dispositif et procede de refrigeration et/ou de liquefaction d'un fluide cryogenique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250221 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| GRAJ | Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| INTG | Intention to grant announced |
Effective date: 20251211 |
|
| INTC | Intention to grant announced (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| INTG | Intention to grant announced |
Effective date: 20260224 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: F10 Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE) Effective date: 20260415 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602023015387 Country of ref document: DE |