WO2023111414A1 - Circuit de refroidissement pour système d'alimentation et de refroidissement d'un gaz - Google Patents
Circuit de refroidissement pour système d'alimentation et de refroidissement d'un gaz Download PDFInfo
- Publication number
- WO2023111414A1 WO2023111414A1 PCT/FR2022/052182 FR2022052182W WO2023111414A1 WO 2023111414 A1 WO2023111414 A1 WO 2023111414A1 FR 2022052182 W FR2022052182 W FR 2022052182W WO 2023111414 A1 WO2023111414 A1 WO 2023111414A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- main loop
- pressure
- refrigerant fluid
- cooling circuit
- gas
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 127
- 230000006835 compression Effects 0.000 claims abstract description 110
- 238000007906 compression Methods 0.000 claims abstract description 110
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 230000001276 controlling effect Effects 0.000 claims abstract description 3
- 239000003507 refrigerant Substances 0.000 claims description 142
- 239000012530 fluid Substances 0.000 claims description 129
- 230000033228 biological regulation Effects 0.000 claims description 52
- 239000007788 liquid Substances 0.000 claims description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 239000012809 cooling fluid Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 75
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/12—Heating; Cooling
- B63J2/14—Heating; Cooling of liquid-freight-carrying tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B11/00—Compression machines, plants or systems, using turbines, e.g. gas turbines
- F25B11/02—Compression machines, plants or systems, using turbines, e.g. gas turbines as expanders
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- 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
- F25J1/0022—Hydrocarbons, e.g. natural gas
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- 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
- F25J1/0022—Hydrocarbons, e.g. natural gas
- F25J1/0025—Boil-off gases "BOG" from storages
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- 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
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- 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
- F25J1/008—Hydrocarbons
- F25J1/0092—Mixtures of hydrocarbons comprising possibly also minor amounts of nitrogen
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- 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
- F25J1/0211—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 a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
- F25J1/0212—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 a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a single flow MCR cycle
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- 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
- F25J1/0229—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock
- F25J1/023—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock for the combustion as fuels, i.e. integration with the fuel gas system
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- 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
- F25J1/0249—Controlling refrigerant inventory, i.e. composition or quantity
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- 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
- F25J1/0249—Controlling refrigerant inventory, i.e. composition or quantity
- F25J1/025—Details related to the refrigerant production or treatment, e.g. make-up supply from feed gas itself
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- 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
- F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
- F25J1/0265—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams comprising cores associated exclusively with the cooling of a refrigerant stream, e.g. for auto-refrigeration or economizer
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- 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
- F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
- F25J1/0277—Offshore use, e.g. during shipping
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- 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.
- F25J1/0285—Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings
- F25J1/0288—Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings using work extraction by mechanical coupling of compression and expansion of the refrigerant, so-called companders
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/001—Charging refrigerant to a cycle
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/002—Collecting refrigerant from a cycle
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2523—Receiver valves
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- 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
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/60—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being (a mixture of) hydrocarbons
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- 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
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- 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
- F25J2290/34—Details about subcooling of liquids
Definitions
- the present invention relates to the field of gas supply and cooling systems within a tank of a floating structure and relates more particularly to a cooling circuit integrated within such supply and cooling systems.
- said floating structure may be capable of using at least a part of said gas in the liquid state in order to supply at least one of its motors, via a gas supply system.
- it is necessary to keep the pressure within the tank at an acceptable level, in particular by keeping the gas cargo in the liquid state at an adequate temperature.
- the refrigerant fluid In order to implement a cooling of the gas contained in the tank, and thus to manage the pressure of the latter in an optimal manner, the refrigerant fluid must circulate in the cooling circuit in a defined quantity. Since the refrigerant fluid circulates through various compression or expansion modules, it happens that said fluid leaks through the joints or bearings thereof. The quantity of refrigerant fluid circulating in the cooling circuit can therefore decrease over time, and this until there is no longer enough refrigerant fluid to effect effective cooling of the gas contained in the tank. Conversely, too much refrigerant circulating in the cooling circuit leads to a rise in pressure within the circuit, thus impairing its proper operation.
- the present invention makes it possible to regulate the quantity of refrigerant fluid present in the cooling circuit by proposing a cooling circuit for a gas supply and cooling system of a floating structure comprising at least one tank configured to contain the gas in the liquid state, the cooling circuit being traversed by a cooling fluid intended to lower the temperature of the gas in the liquid state contained in the tank, the cooling circuit comprising a main loop comprising: at least one compression device ensuring the compression of the refrigerant fluid, at least one heat exchanger configured to effect a heat exchange between the refrigerant fluid and the gas contained in the tank, at least one internal heat exchanger comprising a first pass where the refrigerant fluid circulates at a first pressure and a second pass where the refrigerant fluid circulates at a second pressure lower than the first pressure, the first pass being arranged downstream of the compression device and upstream of the heat exchanger, the second pass being arranged downstream of the exchanger and upstream of the compression device, at least one turbocharger provided with a compression member arranged between the compression device and the
- the cooling circuit according to the invention makes it possible to add refrigerant fluid to the main loop if the initial quantity is not sufficient to operate effective cooling, or to remove it if the refrigerant fluid is present in too excessive a quantity. in the main loop.
- the quantity of refrigerant fluid is determined in real time thanks to the pressure measurement within the main loop by the pressure sensor.
- the cooling circuit compression device is responsible for circulating the refrigerant within the main loop.
- the compression device also makes it possible to compress the refrigerant fluid and thereby increase its temperature.
- the refrigerant fluid, during its circulation, remains permanently in the gaseous state in order not to damage the compression device or the turbocharger.
- the compression member and the turbine by their mechanical connection, are driven in rotation with each other.
- the turbine is driven in rotation and thus drives the shaft in rotation, which itself drives the compression member in rotation.
- the refrigerant is therefore initially compressed by the compression member.
- the refrigerant then passes through the first pass of the internal heat exchanger and is expanded as it passes through the turbine.
- the turbocharger is rotated using a drive member. As mentioned previously, the latter can directly drive the turbine in rotation, but said drive member can also directly drive the compression member in rotation.
- the shaft only connects the turbine to the compression member of the turbocharger.
- the compressor device is separate from the turbocharger and is therefore not connected to the shaft in any way.
- the compression device comprises its own drive member and the turbocharger comprises its own drive member, and these drive members are separate from each other.
- Such a configuration allows the compression device and the turbocharger to have a speed of rotation independent of each other. He It is thus possible to regulate the flow rate of refrigerant fluid via the compression device independently of the pressure implemented by the compression member on the refrigerant fluid.
- the refrigerant By being expanded, the refrigerant is therefore at low pressure and at low temperature at the outlet of the turbine, and then passes through the heat exchanger.
- the heat exchanger is also crossed by the gas coming from the tank. The latter being at a higher temperature than the temperature of the refrigerant fluid, the gas coming from the tank is therefore cooled by the refrigerant fluid.
- the heat exchanger therefore makes it possible, for example, to lower the temperature of the gas in the liquid state present in the tank in order to avoid an overpressure within it.
- the refrigerant fluid circulates within the second pass of the internal heat exchanger.
- the latter therefore ensures a heat exchange between the refrigerant fluid at a first pressure circulating in the first pass and the refrigerant fluid at a second pressure circulating in the second pass.
- the heat exchange is therefore intrinsic to the main loop and makes it possible to manage the thermodynamic equilibrium within the main loop.
- the regulation branch comprises an end connected to the main loop in order to ensure a fluidic connection with the latter.
- the regulation branch can for example extend to a refrigerant fluid reservoir and/or to an outlet to the atmosphere.
- the valve opens in order to circulate the refrigerant fluid respectively from the refrigerant fluid reservoir to the main loop, or from the main to the refrigerant tank or to the atmosphere.
- the valve is in the closed position when the quantity of refrigerant fluid in the main loop is acceptable to meet the cooling needs of the gas contained in the tank.
- the pressure sensor is preferably configured to measure the pressure of the refrigerant fluid within the main loop, in order to deduce the quantity of refrigerant fluid therefrom. Too high a pressure is indicative of too much refrigerant within the main loop. Conversely, too low a pressure is indicative of too low a quantity of refrigerant fluid within the main loop.
- the valve is configured to authorize the exit of refrigerant fluid from the main loop via the regulation branch when the pressure measured by the pressure sensor is greater than a first pressure threshold.
- the first pressure threshold corresponds to a maximum pressure value beyond which the cooling circuit no longer operates optimally.
- the valve opens so that a quantity of refrigerant fluid circulates out of the main loop via the regulation branch and is sent to the atmosphere or to the refrigerant fluid reservoir to be stored.
- the opening of the valve can for example result from the reception of a signal emitted by the pressure sensor following the exceeding of the first pressure threshold.
- the coolant circuit again operates optimally.
- the valve is then closed again in order to prevent the exit of more refrigerant from the main loop.
- the valve is configured to allow the entry of refrigerant fluid into the main loop via the regulation branch when the pressure measured by the pressure sensor is below a second pressure threshold, the second pressure threshold being lower than the first pressure threshold.
- the second pressure threshold corresponds to a minimum pressure value below which the cooling circuit no longer operates optimally.
- a pressure that is too low means that there is not enough refrigerant fluid to meet the cooling needs of the gas contained in the tank. This lack of coolant can for example result from a leak of coolant through the joints of the compression device, the turbocharger or the turbine.
- the pressure sensor can then send a signal to the valve of the regulation branch so that said valve opens in order to allow the addition of a quantity of refrigerant within the loop main.
- the coolant fluid stored in the coolant fluid reservoir then circulates within the regulation branch in order to join the main loop.
- the coolant circuit again operates optimally.
- the valve is then closed again to prevent more refrigerant from entering the main loop.
- the regulation branch is connected to the main loop downstream of the compression device and upstream of the compression member of the turbocharger, the pressure sensor being configured to measure the pressure within the main loop between the compression device and the turbocharger compression device.
- the pressure measurement is performed on the same section of the main loop as the fluidic connection between the main loop and the regulation branch.
- the refrigerant fluid circulates at high pressure, which facilitates the exit of refrigerant fluid from the main loop.
- the entry of refrigerant is also possible.
- the regulation branch is connected to the main loop downstream of the second pass of the internal heat exchanger and upstream of the compression device, the pressure sensor being configured to detect the pressure at the within the main loop between the second pass of the internal heat exchanger and the compression device.
- the refrigerant circulates at low pressure, because this section is located downstream of the turbocharger turbine and upstream of the compression device.
- the circulation of refrigerant fluid at low pressure favors the entry of more refrigerant fluid within the main loop but the exit of refrigerant fluid is also possible there.
- the regulation branch is a first regulation branch connected to the main loop downstream of the device for compression and upstream of the compression member of the turbocharger
- the cooling circuit comprising a second regulating branch connected to the main loop downstream of the second pass of the internal heat exchanger and upstream of the compression device, the main loop comprising a first pressure sensor configured to detect the pressure within the main loop between the compression device and the compression member of the turbocharger and a second pressure sensor configured to detect the pressure within the main loop between the second passes the internal heat exchanger and the compression device.
- the cooling circuit can thus be configured to include a regulation branch dedicated to the refrigerant fluid inlet and a regulation branch dedicated to the refrigerant fluid outlet.
- Each of the two regulation branches can also control the entry and exit of refrigerant fluid, respectively within and outside the main loop.
- the cooling circuit may also comprise two pressure sensors, each being configured to measure a pressure of the refrigerant fluid at the level of a section of the main loop where each of the regulation branches are connected. The presence of two pressure sensors also makes it possible to carry out two checks in order to determine whether one of the pressure thresholds has been crossed.
- the first regulation branch controls an outlet of refrigerant fluid outside the main loop and the second regulation branch controls an inlet of refrigerant fluid within the main loop.
- the first regulating branch is arranged at a high pressure section of the main loop while the second regulating branch is arranged at a low pressure section of the main loop.
- the first regulation branch controls an inlet of refrigerant fluid within the main loop and the second regulation branch controls an outlet of the refrigerant fluid outside the main loop. It is in fact possible to invert the refrigerant fluid inlet and outlet independently of the pressure differential, if the need arises, for example for reasons of fitting out the refrigerant fluid reservoir and/or from the exit to the atmosphere.
- the cooling circuit comprises an additional exchanger, arranged between the compression member of the turbocharger and the first pass of the internal heat exchanger, the additional exchanger being configured to cool the refrigerant fluid.
- the cooling of the refrigerant fluid ensures better expansion thereof by the turbine and thus aims to improve the cooling performance of the gas contained in the tank. Since the refrigerant fluid is at high pressure and at high temperature before passing through the additional exchanger, the cooling of the refrigerant fluid within it can be done with a third fluid such as sea water.
- the refrigerant fluid can be nitrogen.
- Dinitrogen is regularly used as a coolant and is compatible with the cooling circuit according to the invention.
- nitrogen is an easily accessible fluid in the event that the floating structure is a ship equipped with nitrogen generators. It is then easier and less costly to establish a connection between said nitrogen generators and one or more regulation branches of the cooling circuit.
- the invention also covers a gas supply and cooling system for a floating structure comprising at least one tank configured to contain the gas in the liquid state, a supply circuit intended to be traversed by gas coming from the tank and configured to supply gas to at least one gas-consuming device which equips the floating structure, characterized in that the supply and cooling system comprises a cooling circuit as described above.
- the supply and cooling system comprises a cooling circuit as described above.
- the gas in the vapor state can either be evacuated via the supply circuit, or be recondensed indirectly via the cooling circuit, as described previously.
- the gas-consuming device connected to the tank by the supply circuit can for example be a motor ensuring the propulsion of the floating structure or a generator supplying the floating structure with electrical energy.
- FIG. 1 represents a cooling circuit according to the invention comprising a branch for regulating a refrigerant fluid circulating in said cooling circuit,
- FIG. 1 represents the cooling circuit according to the invention comprising two regulation branches
- FIG. 3 represents a first embodiment of a gas supply and cooling system comprising the cooling circuit
- FIG. 4 shows a second embodiment of the gas supply and cooling system comprising the cooling circuit.
- FIG. 1 represents a cooling circuit 4 which can be integrated within a supply and cooling system for a floating structure transporting and/or storing gas in the liquid state and comprising a tank containing said gas and which is not shown here.
- the cooling circuit 4 comprises a main loop 22 within which circulates a refrigerant fluid, for example dinitrogen.
- the main loop 22 includes a compression device 10, a turbocharger 13, a heat exchanger 18, a heat exchanger 17 and an additional exchanger 38.
- the purpose of the cooling circuit 4 is to circulate the refrigerant fluid within the main loop 22 so that it passes through the heat exchanger 17 at low temperature.
- the heat exchanger 17 is also crossed by gas in the liquid state circulating within a gas circuit in the liquid state 8 partially shown in Figure 1. As will be described in detail later, the gas circuit in the liquid state 8 allows the circulation of gas in the liquid state coming from the tank to the heat exchanger 17. The gas in the liquid state then returns to the tank after having passed through said heat exchanger 17.
- the refrigerant fluid thus cools the gas coming from the tank within the heat exchanger 17.
- the gas in the liquid state pumped into the tank is therefore further cooled by the refrigerant fluid in the heat exchanger 17 and then is returned in the tank in order to lower the average temperature of the latter and thus to allow the condensation of the evaporated gas and to manage the internal pressure of the tank.
- the compression device 10 is responsible for circulating the refrigerant fluid and compressing it at high pressure and at high temperature.
- the fluid then circulates to the turbocharger 13.
- the turbocharger 13 comprises a compression member 14 and a turbine 15 mechanically connected to each other by a shaft 16. The latter only connects the compression member 14 to the turbine 15, the compression device 10 not being connected to the shaft 16. This configuration thus makes it possible to rotate the compression device 10 and the compression member 14 at a different speed of rotation one from the other.
- the compression member 14 is arranged upstream of a first pass 23 of the internal heat exchanger 18 while the turbine 15 is arranged downstream of this same first pass 23 of the heat exchanger 18.
- the turbine 15 is rotated by a drive member, and thus drives the shaft 16, which itself drives the compression member 14.
- the member of drive can rotate the compression member 14 which thus drives the shaft 16, which itself drives the turbine 15.
- the additional heat exchanger 38 is as for interposes it between the compression member 14 and the first pass 23 of the internal heat exchanger 18.
- the refrigerant fluid is therefore initially compressed by the compression member 14 then passes through the additional exchanger 38 where it is cooled by a third fluid, for example sea water. Cooling via the additional exchanger 38 subsequently allows more effective expansion by the turbine 15. The refrigerant then passes through the first pass 23 of the internal heat exchanger 18 and is subsequently expanded by the turbine 15. The expansion allows a reduction in the temperature of the refrigerant fluid which circulates through the heat exchanger 17 at low temperature in order to cool the gas in the liquid state coming from the tank, as described above.
- the refrigerant fluid then passes through a second pass 24 of the internal heat exchanger 18. There is therefore an exchange of heat between the refrigerant fluid circulating at a first pressure within the first pass 23 of the internal heat exchanger 18 and the refrigerant fluid circulating at a second pressure lower than the first pressure within the second pass 24 of the internal heat exchanger 18 in order to regulate the temperature of the refrigerant fluid circulating in the cooling circuit 4.
- the refrigerant fluid circulating in the main loop 22 is present in too large a quantity or in a too small quantity, which can harm the operation of the cooling circuit 3 and/or its cooling performance.
- the monitoring of the quantity of refrigerant fluid in the main loop 22 is ensured by a pressure sensor 27 placed on the main loop 22 and measuring the pressure of the refrigerant fluid in real time. The measurement of the pressure is significant of the quantity of refrigerant fluid present in the main loop 22, too high a pressure being relative to an excess of refrigerant fluid and too low a pressure being relative to an excessively low quantity of refrigerant fluid.
- the cooling circuit 4 comprises a regulation branch 25 connected to the main loop 22.
- the regulation branch 25 includes a valve 26 and extends to a refrigerant reservoir 28 and possibly to an outlet 29 to the atmosphere.
- the valve 26 can be opened to cause a circulation of refrigerant fluid in the regulation branch 25 in order to increase or decrease the quantity of refrigerant fluid in the loop. main 22.
- valve 26 opens so that a given quantity of refrigerant fluid leaves the main loop 22 and circulates in the regulation branch 25 up to the refrigerant reservoir. 28 or at outlet 29 to atmosphere.
- valve 26 opens so that a given quantity of refrigerant fluid coming from the refrigerant fluid reservoir 28 circulates in the regulation branch 25 up to the main loop 22.
- valve 26 closes once the quantity of refrigerant fluid present in the main loop 22 has reached an optimum quantity making it possible to maximize the performance of the cooling circuit 4.
- the opening and closing of the valve 26 can depend on a signal emitted by the pressure sensor 27.
- the latter can thus be configured to detect if the measured pressure of the refrigerant fluid exceeds a first pressure threshold, significant of a excess refrigerant fluid in the main loop 22, in order to send a signal ensuring the opening of the valve 26 and the outlet of the refrigerant fluid.
- the pressure sensor 27 can also detect if the measured pressure of the refrigerant fluid is lower than a second pressure threshold, itself lower than the first pressure threshold. In this configuration, this means that the refrigerant fluid is not present in sufficient quantity in the main loop 22. The pressure sensor 27 can then send a signal ensuring the opening of the valve 26 and the fluid inlet. refrigerant within the main loop 22, coming from the refrigerant reservoir 28.
- the regulation branch 25 is connected to the same section as that where the pressure of the refrigerant fluid is measured by the pressure sensor 27.
- the pressure sensor 27 and the regulation branch 25 are positioned between the compression device 10 and the compression member 14 of the turbocharger 13.
- the cooling circuit 4 according to the invention thus makes it possible to adjust the quantity of refrigerant fluid circulating in the main loop 22 so as to operate a cooling optimum gas content in the tank thanks to the heat exchange taking place in the heat exchanger 17.
- FIG. 2 represents the cooling circuit 4 but with two regulation branches 25. This is the only structural difference with the cooling circuit 4 illustrated in FIG. 1. Reference will therefore be made to the description thereof concerning the set of elements common to the two representations of the cooling circuit 4 according to the invention.
- the cooling circuit 4 represented in FIG. 2 thus comprises a first regulation branch 71 and a second regulation branch 72.
- Each of these regulation branches 25 comprises its own valve 26, namely a first valve 73 positioned on the first branch of regulation 71 and a second valve 74 positioned on the second regulation branch 72.
- the second regulation branch 72 is arranged at the level of a low pressure section of the main loop 22, more precisely between the second pass 24 of the heat exchanger internal heat 18 and the compression device 10.
- the first regulation branch 71 is positioned on the same section as the regulation branch 25 illustrated in FIG. 1. It should be noted that when the cooling circuit 4 comprises only single regulation branch 25, this can also be positioned on the section of the main loop 22 where the second regulation branch 72 illustrated in FIG. refrigerant within or outside the main loop 22.
- the cooling circuit 4 also has two pressure sensors 27, including a first pressure sensor 75 measuring the pressure of the refrigerant fluid between the compression device 10 and the compression member 14 of the turbocharger 13, and a second pressure sensor 76 measuring the pressure of the refrigerant fluid between the second pass 24 of the internal heat exchanger 18 and the compression device 10.
- the fact of having two pressure sensors 27 makes it possible to better control the measurement of the pressure of the refrigerant fluid during of time and to check whether one of the two pressure thresholds described previously has been crossed.
- the first regulating branch 71 extends as far as the outlet 29 towards the atmosphere, while the second regulating branch 72 extends as far as the refrigerant fluid reservoir 28. It is thus understood that the first regulation branch 71 is dedicated to a possible exit of refrigerant fluid out of the main loop 22 while the second regulation branch 72 is dedicated to a possible entry of refrigerant fluid within the main loop 22.
- This configuration is advantageous in that it is easier to evacuate the refrigerant fluid out of the main loop 22 when the latter is at high pressure. It is also easier to introduce refrigerant fluid into the main loop 22 when the refrigerant fluid circulating within the latter is at low pressure.
- the opening and closing of the valves 26 operates identically to what has been described in Figure 1, being dependent on the pressure of the refrigerant fluid measured by each of the pressure sensors 27.
- FIG. 3 represents a first embodiment of a power supply and cooling system 1 comprising the cooling circuit 4 described previously.
- the supply and cooling system 1 can be arranged within a floating structure capable of transporting and/or storing gas in liquid form, for example within the tank 2.
- This gas is for example natural gas or ethane.
- the gas in liquid form is stored in tank 2 at very low temperature. For various reasons, for example naturally during transport, the gas in liquid form can partially evaporate at the level of the top 200 of the tank 2.
- the supply and cooling system 1 comprises a supply circuit 3.
- This supply circuit 3 is configured to suck the evaporated gas having formed in the top 200 of the tank 2.
- the gas can subsequently be used as fuel for a first gas-consuming device 5 and/or a second gas-consuming device 6.
- the first gas-consuming device 5 can be an engine allowing the propulsion of the floating structure and the second gas-consuming device 6 can be an auxiliary motor responsible for supplying the floating structure with electricity.
- the compression device 10 ensuring the circulation of the refrigerant fluid within the cooling circuit 4 can also be used within the supply circuit 3 to compress the evaporated gas in order to to send it to gas-consuming appliances. If the latter do not require a supply of energy via the gas, the latter can be eliminated, for example via a burner 7.
- the compression device 10 can therefore be used for one or the other of the circuits. If the refrigerant fluid is nitrogen, it is not compatible for supplying gas-consuming appliances.
- the cooling circuit 4 can be purged in order to completely evacuate the nitrogen, for example thanks to the regulation branches 25, and this before using the compression device 10 to supply the gas-consuming devices.
- the supply and cooling system 1 comprises an arrangement of valves.
- a first valve 41 is placed on the supply circuit 3 upstream of the compression device 10 and of the connection to the cooling circuit 4
- a second valve 42 is placed on the supply circuit 3 downstream of the compression device 10 and the connection to the cooling circuit 4
- a third valve 43 is arranged on the cooling circuit 4 downstream of the compression device 10 and the connection to the supply circuit 3
- a fourth valve 44 is arranged on the cooling circuit 4 upstream of the compression device 10 and the connection to the supply circuit 3.
- the compression device 10 is integrated into the supply circuit 3 in order to compress gas to supply gas-consuming appliances.
- the compression device 10 is integrated into the cooling circuit 4 in order to compress the refrigerant to cool the gas contained in tank 2.
- the supply and cooling system 1 also comprises the circuit of gas in the liquid state 8 mentioned above, within which circulates gas in the liquid state coming from the tank 2 and passing through the heat exchanger 17.
- the circuit gas in the liquid state 8 allows the condensation of the gas having evaporated in the sky 200 of the tank 2 and thus participates in the management of the pressure of the tank.
- the gas in the liquid state of the tank 2 is sucked into the gas circuit in the liquid state 8 by means of a pump 19.
- the gas in the liquid state then circulates until it passes through the exchanger 17. It is thus understood that the heat exchange operated within the heat exchanger 17 is carried out between the refrigerant fluid circulating in the cooling circuit 4 and the gas in the liquid state circulating in the gas circuit at the liquid state 8.
- the gas in the liquid state thus exits cooled from the heat exchanger 17.
- the gas in the liquid state can return to the lower part of the tank 2 via an outlet orifice 21.
- Such an operation contributes to lowering the average temperature of the tank 2, which causes a drop in pressure. saturation of tank 2 and thus a drop in pressure in tank 2.
- the gas in the cooled liquid state can also be sprayed in the form of a spray in the top 200 of the tank 2.
- the gas circuit in the liquid state comprises a spray member 20 ensuring the spraying of the gas in liquid state.
- spraying the gas in the liquid state makes it possible to condense the gas having evaporated in the top 200 of the tank 2.
- the condensation of the gas thus reduces the quantity of evaporated gas, which therefore causes a drop in the internal pressure of the tank 2.
- the gas circuit in the liquid state 8 comprises an additional valve 51.
- the cooling circuit 4, more particularly the regulation branches 25 thereof, is structurally and functionally identical to what has been described in FIGS. 1 and 2. Reference will therefore be made to the description of these figures for the operation of the branches. regulation 25.
- FIG. 4 represents a second embodiment of the supply and cooling system 1.
- This second embodiment differs from the first embodiment in particular in that it comprises a first compression device 11 and a second compression device 12.
- the first compression device 11 is installed at the level of the supply circuit 3 while the second compression device 12 is installed within the cooling circuit 4.
- the function of the two compression devices is however not defined by their location, as will be described in detail later.
- the presence of two compression devices also makes it possible to set up redundancy within the power supply and cooling system 1. Thus, for example, if one of the compression devices breaks down, the other compression device can still perform its function and keep the power supply and cooling system 1 operational.
- the supply circuit 3 and the cooling circuit 4 both comprise a plurality of valves allowing access to each of the circuits to each of the compression devices so that the latter can both meet the gas supply needs of the appliances. gas consumers or, if necessary, supply of coolant to the cooling circuit.
- the second embodiment of the supply and cooling system 1 comprises a fifth valve 45, a sixth valve 46, a seventh valve 47, an eighth valve 48, a ninth valve 49 and a tenth valve 50.
- the fifth valve 45 and the sixth valve 46 allow the connection of the first compression device 11 to the cooling circuit 4 or else the connection of the second compression device 12 to the supply circuit 3 depending on the configuration of the supply system and cooling 1.
- the seventh valve 47 and the eighth valve 48 are installed on either side of the first compression device 11 and make it possible to isolate the latter when they are in the closed position. Closing these valves is useful in the event of a breakdown of the first compression device 11.
- the ninth valve 49 and the tenth valve 50 allow the second compression device 12 to be isolated from the rest of the supply system and to cooling 1.
- the set of valves thus makes it possible to dedicate a compression device to each of the circuits, or else to dedicate the two compression devices to the supply circuit 3 or to the cooling circuit 4.
- the fact of dedicating a compression device to each circuits makes it possible to simultaneously operate the supply circuit 3 in order to supply gas to the gas-consuming appliances and the cooling circuit 4 in order to cool the gas contained in the tank 2 thanks to the refrigerant fluid.
- the cooling circuit 4 can be purged in order to completely evacuate the dinitrogen, for example thanks to the regulation branches 25, and this before using the compression device or devices to supply gas-consuming appliances.
- the second embodiment also differs from the first embodiment in that the first regulating branch 71 is connected to the refrigerant fluid reservoir 28 and in that the second regulating branch 72 is connected to the outlet 29 to the atmosphere.
- This configuration can be implemented for example for reasons of mechanical bulk or pipe connection constraints.
- the rest of the power supply and cooling system 1 is structurally and/or functionally identical to what has been described previously and reference will be made to the descriptions of FIG. 3 concerning the structural and functional details of the power supply and cooling system 1 , and to the descriptions of figures 1 and 2 concerning the structural and functional details of the cooling circuit 4.
- the invention achieves the goal it had set itself, and makes it possible to propose a cooling circuit capable of regulating a quantity of refrigerant fluid circulating within said cooling circuit in order to to optimize the cooling performance of a gas contained in a tank of a floating structure.
- Variants not described here could be implemented without departing from the context of the invention, provided that, in accordance with the invention, they comprise a cooling circuit in accordance with the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ocean & Marine Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22840237.6A EP4449034A1 (fr) | 2021-12-14 | 2022-11-25 | Circuit de refroidissement pour système d'alimentation et de refroidissement d'un gaz |
CN202280082387.2A CN118382784A (zh) | 2021-12-14 | 2022-11-25 | 用于供应和冷却气体的系统的冷却回路 |
KR1020247022360A KR20240125937A (ko) | 2021-12-14 | 2022-11-25 | 가스를 공급하고 냉각하기 위한 시스템용 냉각 회로 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FRFR2113467 | 2021-12-14 | ||
FR2113467A FR3130358B1 (fr) | 2021-12-14 | 2021-12-14 | Circuit de refroidissement pour système d’alimentation et de refroidissement d’un gaz |
Publications (1)
Publication Number | Publication Date |
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WO2023111414A1 true WO2023111414A1 (fr) | 2023-06-22 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2022/052182 WO2023111414A1 (fr) | 2021-12-14 | 2022-11-25 | Circuit de refroidissement pour système d'alimentation et de refroidissement d'un gaz |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4449034A1 (fr) |
KR (1) | KR20240125937A (fr) |
CN (1) | CN118382784A (fr) |
FR (1) | FR3130358B1 (fr) |
WO (1) | WO2023111414A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100049728A (ko) * | 2008-11-04 | 2010-05-13 | 대우조선해양 주식회사 | 증발가스 재액화 장치용 냉각 시스템의 성능 유지 장치 및 방법 |
JP2016128737A (ja) * | 2015-01-09 | 2016-07-14 | 大阪瓦斯株式会社 | ボイルオフガスの再液化設備 |
US20200064062A1 (en) * | 2018-08-22 | 2020-02-27 | Yijun Liu | Primary Loop Start-Up Method for a High Pressure Expander Process |
-
2021
- 2021-12-14 FR FR2113467A patent/FR3130358B1/fr active Active
-
2022
- 2022-11-25 WO PCT/FR2022/052182 patent/WO2023111414A1/fr active Application Filing
- 2022-11-25 KR KR1020247022360A patent/KR20240125937A/ko unknown
- 2022-11-25 CN CN202280082387.2A patent/CN118382784A/zh active Pending
- 2022-11-25 EP EP22840237.6A patent/EP4449034A1/fr active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100049728A (ko) * | 2008-11-04 | 2010-05-13 | 대우조선해양 주식회사 | 증발가스 재액화 장치용 냉각 시스템의 성능 유지 장치 및 방법 |
JP2016128737A (ja) * | 2015-01-09 | 2016-07-14 | 大阪瓦斯株式会社 | ボイルオフガスの再液化設備 |
US20200064062A1 (en) * | 2018-08-22 | 2020-02-27 | Yijun Liu | Primary Loop Start-Up Method for a High Pressure Expander Process |
Non-Patent Citations (1)
Title |
---|
ISALSKI ET AL: "On-board reliquefaction for LNG ships", PROCEEDINGS GAS PROCESSORS ASSOCIATION. GPA MEETING/ANNUALCONVENTION, XX, XX, 19 May 2005 (2005-05-19), pages 1 - 14, XP007908438 * |
Also Published As
Publication number | Publication date |
---|---|
KR20240125937A (ko) | 2024-08-20 |
FR3130358B1 (fr) | 2023-12-15 |
CN118382784A (zh) | 2024-07-23 |
EP4449034A1 (fr) | 2024-10-23 |
FR3130358A1 (fr) | 2023-06-16 |
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