EP4540464A1 - System zur offshore-produktion von kraftstoff - Google Patents

System zur offshore-produktion von kraftstoff

Info

Publication number
EP4540464A1
EP4540464A1 EP23742470.0A EP23742470A EP4540464A1 EP 4540464 A1 EP4540464 A1 EP 4540464A1 EP 23742470 A EP23742470 A EP 23742470A EP 4540464 A1 EP4540464 A1 EP 4540464A1
Authority
EP
European Patent Office
Prior art keywords
hydrogen
natural gas
marine platform
unit
percentage
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.)
Pending
Application number
EP23742470.0A
Other languages
English (en)
French (fr)
Inventor
Svein Borge Hellesmark
Göran HERMANSSON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stena Power and LNG Solutions AS
Original Assignee
Stena Power and LNG Solutions AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US18/334,964 external-priority patent/US11958575B2/en
Application filed by Stena Power and LNG Solutions AS filed Critical Stena Power and LNG Solutions AS
Publication of EP4540464A1 publication Critical patent/EP4540464A1/de
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/081—Supplying products to non-electrochemical reactors that are combined with the electrochemical cell, e.g. Sabatier reactor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
    • 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
    • F25J1/02—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
    • F25J1/0278—Unit being stationary, e.g. on floating barge or fixed platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4473—Floating structures supporting industrial plants, such as factories, refineries, or the like
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/19—Combinations of wind motors with apparatus storing energy storing chemical energy, e.g. using electrolysis
    • 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
    • F25J2260/30—Integration in an installation using renewable energy

Definitions

  • the present disclosure generally relates to production of fuel for power generation, and more particularly to the production of hydrogen utilizing offshore fuel production facilities.
  • natural gas which is predominantly made up of methane (CH4)
  • natural gas may be burned as fuel in the combustion turbines to produce mechanical power that is converted to electric power by electric generators.
  • CO2 carbon dioxide
  • the environmental impacts of greenhouse gases such as carbon dioxide are known, and therefore, there is a desire to reduce carbon dioxide emissions in the production of electricity by identifying other fuels for combustion turbines.
  • hydrogen as an alternative fuel to natural gas in the production of electricity has been gaining traction.
  • FIG. 1 is an offshore marine system for hydrogen-based fuel production.
  • FIG. 2 is one embodiment of a water purification unit to be used in the offshore marine system of FIG. 1.
  • FIG. 3 is one embodiment of a hydrogen production unit to be used in the offshore marine system of FIG. 1.
  • FIG. 4 is the offshore marine system of FIG. 1 with a liquified natural gas floating storage unit and blending unit for the production of blended fuel.
  • FIG. 5 is another embodiment of an offshore marine system for production of hydrogen-blended liquefied natural gas.
  • FIG. 6 is another embodiment of an offshore marine system for production of hydrogen-blended fuel.
  • Gaseous hydrogen produced by an in situ hydrogen production system on the platform may be piped to an onshore location, or alternatively, may be liquified for transport by a liquefied hydrogen transport vessel.
  • the offshore marine platform includes a water purification unit for purifying seawater collected from adjacent the marine platform. The purified water is used in an onboard hydrogen production system to produce gaseous hydrogen.
  • a liquified hydrogen storage unit may be positioned adjacent the marine platform to collect in bulk liquified hydrogen produced on the platform until the liquefied hydrogen can be loaded on a transport vessel.
  • a floating liquified natural gas storage unit in addition to the floating liquified hydrogen storage unit, is positioned adjacent the marine platform to allow blending of produced hydrogen with natural gas prior to pipeline transfer.
  • the offshore marine platform is disposed to blend electricity produced by adjacent offshore wind turbines with electricity produced onboard the marine platform utilizing liquified natural gas stored on a liquified natural gas floating storage unit moored adjacent the marine platform.
  • a floating liquified hydrogen storage unit in addition to the floating liquified natural gas storage unit moored adjacent the marine platform, a floating liquified hydrogen storage unit is positioned adjacent the marine platform so that gaseous hydrogen can be blended with natural gas prior to producing onboard electricity to be blended with electricity from the adjacent wind turbines.
  • a hydrogen fuel production system 110 includes an offshore marine platform 120 having a hydrogen production unit 122 and a gaseous hydrogen liquefaction unit 124 for the production of liquified hydrogen, which liquified hydrogen can then be bulk stored on a liquified hydrogen storage unit 126 on marine platform 120 or adjacent marine platform 120.
  • liquefied hydrogen storage unit 126 is a liquified hydrogen floating storage unit 126 and may include a plurality of bulk storage tanks 128 for receipt of liquified hydrogen produced onboard marine platform 120.
  • liquified hydrogen produced at marine platform 120 and stored in bulk by liquified hydrogen floating storage unit 126 can be transferred to a liquefied hydrogen transport vessel 130 for transport to other locations.
  • liquefied hydrogen floating storage unit 126 is moored in close proximity to the marine platform 120 so that a continuous flow of liquified hydrogen can be maintained therebetween as the liquified hydrogen is produced without the need for an intermediate storage, it being understood that in instances where hydrogen production unit 122 has a low output volume, the low volume may not allow the liquid to be readily pumped to a storage unit that is a distance removed from the marine platform 120 or directly to a liquefied hydrogen transport vessel 130.
  • liquefied hydrogen floating storage unit 126 is desirable because it can be utilized as a collection reservoir for liquified hydrogen produced onboard marine platform 120 until a sufficient quantity of liquefied hydrogen has been produced for transport to another location by liquefied hydrogen transport vessel 130.
  • liquified hydrogen floating storage unit 126 has a first total liquified hydrogen storage volume and liquefied hydrogen transport vessel 130 has a second total liquified hydrogen storage volume that is less than the first total liquified hydrogen storage volume
  • liquefied hydrogen transport vessel 130 may be moored at moorings 133 that are spaced apart from liquefied hydrogen floating storage unit 126 and marine platform 120.
  • a floating transfer terminal 131 may be utilized to transfer liquified hydrogen from the liquefied hydrogen floating storage unit 126 to the liquefied hydrogen transport vessel 130.
  • marine platform 120 may be a jack-up platform, a semi-submersible platform, a barge, a buoyant vessel, a fixed platform, a spar platform, or a tension-leg platform which is fixed to the ocean floor or otherwise moored for long periods of deployment in a single location.
  • marine platform 120 may be a floating vessel such as a barge or ship that can be moored in place for long term deployment.
  • marine platform 120 may be a floating vessel such as a barge or ship.
  • marine platform 120 and liquified hydrogen floating storage unit 126 are shown separately, they can be integrally formed either on the marine platform 120 or the liquified hydrogen floating storage unit 126.
  • marine platform 120 includes at least one platform deck 121 and three or more platform legs 123, where each platform leg 123 has a first end 123a and a second end 123b.
  • Platform deck 121 is disposed adjacent the first end 123a of each platform leg 123 and supported above the ocean surface 125.
  • the second end 123 b of each platform leg 123 may engage the seabed 127.
  • Hydrogen fuel production system 110 may include one or more seawater intakes 129 to draw in seawater for use in the hydrogen production process. While seawater intakes 129 are not limited to a particular system for drawing in seawater, in one or more embodiments, one or more seawater intake(s) 129 may be disposed adjacent the second end 123b of a platform leg 123 of marine platform 120 to draw in cooler water from the adjacent body of seawater, while in other embodiments, seawater intake 129 is disposed between the first and second leg ends 123a, 123b, respectively, of a platform leg 123, adjacent the ocean surface 125, to draw in warmer water from the adjacent body of seawater.
  • the vertical height of seawater intake 129 may be adjusted based on the season to ensure the seawater used in the process is at an optimum temperature for purification and use in the hydrogen production process.
  • a first plurality of seawater intakes 129 may be disposed adjacent the second end 123b of one or more platform legs 123 and a second plurality of seawater intakes 129 may be spaced apart from the second end 123b of one or more platform legs 123.
  • the first plurality of seawater intakes 129 may be a first distance from the second end 123 b of one or more legs 123 and the second plurality of seawater intakes 129 may be a second distance from the second end 123 b of one or more legs 123, where the second distance is greater than the first distance.
  • the second distance may be at least twice the first distance so that seawater in different thermoclines may be used in the processes onboard marine platform 120, taking advantage of warmer mixed water at the surface and the cooler deep water below.
  • the liquefaction units or regasification systems described herein may utilize seawater at a first temperature for heat transfer, while the hydrogen production unit may utilize purified seawater at a second temperature for hydrogen production.
  • hydrogen production unit 122 utilizes hydrogen (H2) from raw materials sourced onboard marine platform 120, i.e., purified water, to produce the liquified hydrogen. Moreover, electricity for hydrogen production unit 122 is provided to marine platform 120 for the production of hydrogen by offshore wind turbines 132 disposed in the vicinity of marine platform 120.
  • H2 hydrogen
  • purified water raw materials sourced onboard marine platform 120
  • electricity for hydrogen production unit 122 is provided to marine platform 120 for the production of hydrogen by offshore wind turbines 132 disposed in the vicinity of marine platform 120.
  • Marine platform 120 also includes a water purification unit 140 to purify seawater where the hydrogen production unit 122 utilizes purified water from the water purification unit 140 to produce hydrogen for use in the hydrogen production unit 122.
  • a portion of the produced hydrogen may be transmitted to an onshore or near shore location or terminal via a seabed conveyance system 144, such as the illustrated hydrogen gas pipeline conveyance system 144 shown extending away from the marine platform 120 along the seabed 127.
  • a portion of the produced hydrogen may be utilized onboard marine platform 120 to generate electricity.
  • a first portion of the produced hydrogen is liquified and stored on liquefied hydrogen floating storage unit 126, while a second portion of the produced hydrogen is utilized onboard marine platform 120 for power production.
  • marine platform 120 may include one or more combustion turbines 148 for combusting the second portion of the produced hydrogen to provide mechanical power that is converted to electric power by one or more electric generators 150.
  • the combustion turbines 148 are in fluid communication, either directly or indirectly, with the hydrogen production unit 122 in order to utilize at least a portion of the produced hydrogen for fuel in the combustion turbines 148.
  • combustion turbines 148 may include other devices utilized to combust fuel to produce power, including, without limitation, internal combustion engines.
  • conveyance system 144 may be an electrical cable in addition to or as an alternative to a hydrogen gas pipeline. Where conveyance system 144 is an electrical cable, excess power from offshore wind turbines 132 may be transmitted to shore from marine platform 120. In any event, conveyance system 144 is shown extending away from marine platform 120 along the seabed 127. In one or more embodiments, conveyance system 144 extends from adjacent the second end 123b of a leg 123.
  • water purification unit 140 utilizes reverse osmosis and includes a water purification vessel 152 having a first chamber 154 and a second chamber 156 with a semi -permeable membrane 158 disposed between the first and second chambers 154, 156.
  • a seawater inlet 160 is provided in the first chamber 154 and a purified water outlet 162 is provided in the second chamber 156.
  • Water purification unit 140 also includes a pump 164 for pressurizing the seawater in the first chamber 154. Pump 164 is in fluid communication with seawater intake(s) 129 to draw in seawater for purification.
  • semi-permeable membrane 158 may be any membrane known for use in reverse osmosis, in one or more embodiments, semi-permeable membrane 158 may be a thin polyamide layer ( ⁇ 200 nm) deposited on top of a polysulfone porous layer (about 50 microns) on top of a non-woven fabric support sheet and having a pore size of approximately 0.0001 micron.
  • a purified water storage vessel 166 is fluidically disposed between the purified water outlet 162 of the water purification unit 140 and the hydrogen production unit 122.
  • hydrogen production unit 122 on board marine platform 120 utilizes electrolysis to produce hydrogen.
  • a hydrogen production vessel 170 is provided, having a first chamber 172 and a second chamber 174 with a membrane 176 disposed between the first and second chambers 172, 174.
  • membrane 176 is a proton exchange membrane (PEM) or alkaline membrane.
  • PEM proton exchange membrane
  • purified water 177 from water purification unit 140 is delivered to hydrogen production vessel 170 via a purified water inlet 178 provided in hydrogen production vessel 170.
  • An anode assembly 180 having an anode 182 extending into first chamber 172 is provided on a first side 176a of the membrane 176, and a cathode assembly 184 having a cathode 186 extending into second chamber 174 is provided on a second side 176b of membrane 176.
  • a power supply 188 electrically couples anode assembly 180 and cathode assembly 184.
  • purified water 177 may be provided in either first chamber 172, second chamber 174 or both, depending on the hydrogen production unit 122.
  • a purified water inlet 178 may likewise be provided in either first chamber 172, second chamber 174 or both.
  • an oxygen outlet 190 is provided in first chamber 172 for allowing oxygen 192 to pass therethrough, and a hydrogen outlet 194 is provided in second chamber 174 for allowing hydrogen 196 to pass therethrough.
  • electricity is provided to power supply 188 from offshore wind turbines 132 (see FIG. 1), while in other embodiments, electricity may be provided to power supply 188 from another source, such as electric generators disposed onboard marine platform 120.
  • FIG. 4 illustrates an embodiment of a hydrogen fuel production system 210 disposed to provide blended fuel of natural gas and hydrogen in order to accommodate combustion systems that are not disposed for combustion of hydrogen gas alone.
  • natural gas is delivered to marine platform 120 and blended with hydrogen produced on marine platform 120 as described above with respect to FIGS 1-3.
  • hydrogen fuel production system 210 in addition to a hydrogen production unit 122 and water purification unit 140 as described above with respect to FIG. 1, hydrogen fuel production system 210 also includes a regasification system 232 for regasification of the delivered liquefied natural gas and a blending unit 234 disposed to receive gaseous hydrogen and gaseous natural gas and produce a blended natural gas.
  • Hydrogen fuel production system 210 produces gaseous hydrogen as described above utilizing water purification unit 140 to deliver purified water to hydrogen production unit 122.
  • the electricity for hydrogen production unit 122 is provided to marine platform 120 for the production of hydrogen by offshore wind turbines 132 disposed in the vicinity of marine platform 120.
  • liquefied natural gas delivered to floating storage unit 226 is regasified by regasification system 232 to produce natural gas for blending, after which the produced hydrogen and delivered natural gas are mixed together in desired proportions by blending unit 234 which includes a gaseous hydrogen input, a gaseous natural gas input and a blended fuel output, where the blended fuel is natural gas with an increased hydrogen content.
  • each of regasification system 232 and hydrogen production unit 122 are in fluid communication with blending unit 234 which produces a blended fuel from the input gasses.
  • the blended fuel comprises no more than about 25% hydrogen.
  • the proportion of hydrogen to natural gas in the blended fuel may be higher.
  • the blended ration may correspondingly increase.
  • a portion of the blended fuel may be transmitted to an onshore or near shore location or terminal via a conveyance system 144, such as the illustrated gas pipeline conveyance system 144.
  • a conveyance system 144 such as the illustrated gas pipeline conveyance system 144.
  • a portion of the blended fuel may be utilized onboard marine platform 120 to generate electricity.
  • marine platform 120 may include one or more combustion turbines 148 for combusting the blended fuel to provide mechanical power that is converted to electric power by one or more electric generators 150.
  • conveyance system 144 may be an electrical cable in addition to or as an alternative to a gas pipeline for the blended fuel. Where conveyance system 144 is an electrical cable, excess electricity from offshore wind turbines 132 may be transmitted to shore from marine platform 120 along with electricity produced from electric generators 150.
  • FIG. 5 illustrates another embodiment of a hydrogen fuel production system 310 disposed to provide blended natural gas in order to accommodate combustion systems that are not disposed for combustion of hydrogen gas alone.
  • natural gas having a first percentage of hydrogen is delivered to marine platform 120 and regassified.
  • the first percentage of hydrogen in the delivered natural gas may be minimal, such as less than .5% in some embodiments, or less than 1% in other embodiments or less than 3% in yet other embodiments.
  • the first percentage of hydrogen in the delivered natural gas is simply less than a desired second percentage of hydrogen in a blended fuel.
  • hydrogen fuel production system 310 in addition to a hydrogen production unit 122 and water purification unit 140 as described above with respect to FIG. 1, hydrogen fuel production system 310 also includes a regasification system 232, a blending unit 234 and a liquefaction unit 224.
  • a first liquified natural gas floating storage unit 226 having storage tanks 228 is provided adjacent marine platform 120 and disposed to bulk store liquefied natural gas delivered by a liquified natural gas transport vessel 230.
  • This delivered natural gas stored on floating storage unit 226 is characterized as storing liquefied natural gas having the first percentage of hydrogen (LNG1).
  • Hydrogen fuel production system 310 therefore includes a first pump to transfer by pumping LNG1 from floating storage unit 226 to marine platform 120 for processing.
  • a second liquified natural gas floating storage unit 326 having storage tanks 328 is provided adjacent marine platform 120 and disposed to bulk store liquefied natural gas having the second percentage of hydrogen (LNG2), namely liquified blended fuel for transport to other locations.
  • LNG2 second percentage of hydrogen
  • Hydrogen fuel production system 310 therefore includes a second pump to transfer by pumping LNG2 from marine platform 120 to floating storage unit 326 for collection and storage prior to shipping.
  • a liquified natural gas transport vessel 230 may then be used to loaded with the liquified blended fuel from second liquified natural gas floating storage unit 326 for transport to other locations.
  • the same liquified natural gas transport vessel 230 utilized to deliver liquified natural gas to first floating storage unit 226, following unloading, may then be loaded with liquefied blended fuel from second floating storage unit 326.
  • liquefied natural gas transport vessel 230 may be moored at moorings 133 that are spaced apart from liquefied natural gas floating storage unit 126 and marine platform 120.
  • a floating transfer terminal 131a may be utilized to transfer liquified natural gas from the liquified natural gas transport vessel 230 to the liquified natural gas floating storage unit 226.
  • a floating transfer terminal 131b may be utilized to transfer liquified blended fuel from the liquified natural gas floating storage unit 326 to the liquified natural gas transport vessel 230.
  • marine platform 120 may have at least a first side 120a and a second side 120b with first floating storage unit 226 moored adjacent the first side 120a of marine platform 120 and second floating storage unit 326 moored adjacent the second side 120b of marine platform 120.
  • first side 120a and second side 120b may oppose one as opposite sides of marine platform 120 to allow both the liquified natural gas floating storage unit 326 and the liquified hydrogen floating storage unit 226 to be closely moored adjacent marine platform 120 at the same time.
  • the liquified natural gas floating storage unit 326 may include a plurality of bulk storage tanks 328 for receipt of blended liquified natural gas produced onboard marine platform 120.
  • Hydrogen fuel production system 310 produces gaseous hydrogen as described above utilizing water purification unit 140 to deliver purified water to hydrogen production unit 122.
  • the electricity for hydrogen production unit 122 is provided to marine platform 120 for the production of hydrogen by offshore wind turbines 132 disposed in the vicinity of marine platform 120.
  • liquefied natural gas from floating storage unit 226 is regasified by regasification system 232 to produce natural gas, after which the produced hydrogen and natural gas are mixed together in desired proportions by blending unit 234.
  • each of regasification system 232 and hydrogen production unit 122 are in fluid communication with blending unit 234 which produces a blended fuel from the input gasses.
  • the blended fuel comprises no more than about 25% hydrogen. In other embodiments, the proportion of hydrogen in the blended fuel may be higher.
  • blended fuel from blending unit 234 is then conveyed to liquefaction unit 224 where the blended fuel is liquified before loading onto second liquified natural gas floating storage unit 326.
  • a portion of the blended fuel may be transmitted to an onshore or near shore location or terminal via a conveyance system 144, such as the illustrated gas pipeline conveyance system 144.
  • a portion of the blended fuel may be utilized onboard marine platform 120 to generate electricity.
  • marine platform 120 may include one or more combustion turbines 148, such as shown in FIG. 4, for combusting the blended fuel to provide mechanical power that is converted to electric power by one or more electric generators 150 such as is shown in FIG. 4.
  • conveyance system 144 may be an electrical cable in addition to or as an alternative to a gas pipeline.
  • conveyance system 144 is an electrical cable
  • excess electricity from offshore wind turbines 132 may be transmitted to shore from marine platform 120 along with electricity produced from electric generators 150.
  • electricity from offshore wind turbines 132 may be utilized to produce hydrogen for blending with natural gas, while electricity from electric generators 150 may be transmitted via conveyance system 144.
  • the combustion turbines are in fluid communication, either directly or indirectly, with the blending unit 234 in order to utilize at least a portion of the blended fuel in the combustion turbines 148.
  • FIG. 6 illustrates another embodiment of a hydrogen fuel production system 410 disposed to produce blended natural gas in order to accommodate combustion systems that are not disposed for combustion of hydrogen gas alone.
  • the liquefied natural gas having a first percentage of hydrogen (LNG1) is delivered to marine platform 120 by liquefied natural gas transport vessel 230 and stored on a liquefied natural gas floating storage unit 226 for regasification.
  • the percentage amount of hydrogen in the delivered natural gas may be minimal, such as less than .5% in some embodiments, or less than 1% in other embodiments or less than 3% in yet other embodiments.
  • the percentage of hydrogen in the delivered natural gas LNG1 is simply less than a desired percentage of hydrogen in a blended fuel.
  • the delivered natural gas LNG1 is regassified and blended with gaseous hydrogen from a hydrogen source at marine platform 120.
  • the hydrogen source at marine platform 120 is liquid hydrogen stored adjacent marine platform 120 on a liquified hydrogen floating storage unit 426, which liquid hydrogen is regassified on board marine platform 120.
  • Hydrogen fuel production system 410 therefore includes a first pump to transfer by pumping the delivered natural gas LNG1 from floating storage unit 226 to marine platform 120 for processing. Specifically, the delivered natural gas and hydrogen are then blended to produce a blended fuel, namely natural gas with a desired percentage of hydrogen comprising the blended fuel.
  • the liquified hydrogen from floating storage unit 426 is produced on marine platform 120 as described above with respect to FIGS 1-3, after which the produced hydrogen is liquefied onboard marine platform 120 before being stored in bulk storage tanks 428 of floating storage unit 426.
  • the liquefied hydrogen may be delivered to floating storage unit 426 by a cryogenic transport vessel similar to transport vessel 230.
  • hydrogen fuel production system 410 therefore includes a second pump to transfer by pumping the liquified hydrogen from floating storage unit 426 to marine platform 120 for processing.
  • marine platform 120 need not include the hydrogen production system described in FIGS. 1-3.
  • hydrogen production unit 122 such as is described in FIGS. 1-3, may have a low output volume, and thus may need to be producing hydrogen for blending even when blending operations on marine platform 120 are suspended, such as could be the case when the supply of LNG1 on storage vessel 226 is low.
  • hydrogen production may be continuous or semi-continuous as compared to blending.
  • bulk storage tanks 428 of floating storage unit 426 which can be utilized to collect and store the produced hydrogen until it is needed for blending as described herein.
  • gaseous hydrogen may be produced onboard marine platform 120 and a portion of the produced hydrogen may be used directly in the blending process without first liquefying and storing the hydrogen on floating storage unit 426.
  • floating storage unit 426 may be used to store the excess hydrogen produced onboard marine platform 120.
  • the percentage of hydrogen that can be blended with natural gas for use in industry will increase over time as equipment is upgraded or manufactured to utilize fuel with higher percentages of hydrogen.
  • Floating storage unit 426 affords the flexibility to provide higher percentages of hydrogen for blending as industry demands change.
  • liquefied natural gas transport vessel 230 may be moored at moorings 133 that are spaced apart from liquefied natural gas floating storage unit 226 and marine platform 120.
  • a floating transfer terminal 131 may be utilized to transfer liquified natural gas from liquefied natural gas transport vessel 230 to liquefied natural gas floating storage unit 226.
  • hydrogen fuel production system 410 may include a hydrogen production unit 122, a water purification unit 140 and a hydrogen liquefaction unit 124 as described above with respect to FIG. 1.
  • hydrogen fuel production system 410 also includes a first regasification system 232, a second regasification system 233, and a blending unit 234.
  • a first floating storage unit 226 having storage tanks 228 is provided adjacent marine platform 120 and disposed to bulk store liquefied natural gas delivered by a first transport vessel 230.
  • a second floating storage unit 426 having storage tanks 428 is provided adjacent marine platform 120 and disposed to bulk store liquefied hydrogen.
  • marine platform 120 may have at least a first side 120a and a second side 120b with first floating storage unit 226 moored adjacent the first side 120a of marine platform 120 and second floating storage unit 426 moored adjacent the second side 120b of marine platform 120.
  • the first floating storage unit 226 is disposed to store liquified natural gas and the second floating storage unit 426 is disposed to store liquified hydrogen.
  • Hydrogen fuel production system 410 produces gaseous hydrogen as described above utilizing water purification unit 140 to deliver purified water to hydrogen production unit 122.
  • Liquefaction unit 124 converts the produced gaseous hydrogen to liquified hydrogen for storage.
  • the electricity for hydrogen production unit 122 is provided to marine platform 120 for the production of hydrogen by offshore wind turbines 132 disposed in the vicinity of marine platform 120.
  • first regasification system 232 Prior to blending in blending unit 234, liquefied natural gas from first floating storage unit 226 is regasified by first regasification system 232 to produce natural gas, and liquified hydrogen from second floating storage unit 426 is regasified by second regasification system 233, after which the resulting gaseous hydrogen and gaseous natural gas are mixed together in desired proportions by blending unit 234.
  • first regasification system 232 and second regasification system 233 are in fluid communication with blending unit 234 which produces a blended fuel from the input gasses.
  • the blended fuel comprises no more than about 25% hydrogen. In other embodiments, the proportion of hydrogen in the blended fuel may be higher.
  • a portion of the blended fuel may be transmitted to an onshore or near shore location or terminal via a conveyance system 144, such as the illustrated gas pipeline conveyance system 144.
  • a portion of the blended fuel may be utilized onboard marine platform 120 to generate electricity.
  • marine platform 120 may include one or more combustion turbines 148 such as is shown in Fig. 4 for combusting the blended fuel to provide mechanical power that is converted to electric power by one or more electric generators 150 such as is shown in Fig. 4.
  • conveyance system 144 may be an electrical cable in addition to or as an alternative to a gas pipeline.
  • conveyance system 144 is an electrical cable
  • excess electricity from offshore wind turbines 132 may be transmitted to shore from marine platform 120 along with electricity produced from electric generators 150.
  • electricity from offshore wind turbines 132 may be utilized to produce hydrogen for mixing with natural gas, while electricity from electric generators 150 may be transmitted via conveyance system 144.
  • the combustion turbines are in fluid communication, either directly or indirectly, with the blending unit 234 in order to utilize at least a portion of the blended fuel in the combustion turbines 148.
  • the system may include an offshore marine platform; a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; a hydrogen liquefaction system on the marine platform in fluid communication with the hydrogen production unit; and a liquified hydrogen floating storage unit moored adjacent the marine platform and in fluid communication with the hydrogen liquefaction system.
  • the system may include an offshore marine platform; a plurality of offshore wind turbines in the vicinity of marine platform and disposed to provide electricity to the marine platform; a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; a hydrogen liquefaction system on the marine platform in fluid communication with the hydrogen production unit; and a liquified hydrogen floating storage unit moored adjacent the marine platform and in fluid communication with the hydrogen liquefaction system.
  • the system may include an offshore marine platform; a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; a liquified natural gas floating storage unit moored adjacent the marine platform; a regasification system on the marine platform and in fluid communication with the liquified natural gas floating storage unit, the regasification system disposed to convert the liquefied natural gas to gaseous natural gas; and a blending unit on the marine platform and in fluid communication with each of the regasification system and the at least one hydrogen production unit, the blending unit disposed to receive gaseous natural gas with a first percentage of hydrogen and blend the received natural gas with gaseous hydrogen to produce blended natural gas with a second percentage of hydrogen.
  • the system may include an offshore marine platform; a plurality of offshore wind turbines in the vicinity of marine platform and disposed to provide electricity to the marine platform; a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit and disposed to produce gaseous hydrogen; a liquified natural gas floating storage unit moored adjacent the marine platform; a first regasification system on the marine platform and in fluid communication with the liquified natural gas floating storage unit, the first regasification system disposed to convert the liquefied natural gas to gaseous natural gas; and a blending unit on the marine platform and in fluid communication with the regasification system and the at least one hydrogen production unit, the blending unit disposed to receive gaseous natural gas with a first percentage of hydrogen and blend the received natural gas with gaseous hydrogen to produce blended natural gas with a second percentage of hydrogen.
  • the system may include an offshore marine platform; a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; a first liquified natural gas floating storage unit moored adjacent the marine platform and having storage tanks with liquified natural gas having a first percentage of hydrogen stored therein; a second liquified natural gas floating storage unit moored adjacent the marine platform and having storage tanks with liquefied natural gas having a second percentage of hydrogen stored therein; a regasification system on the marine platform and in fluid communication with the first liquified natural gas floating storage unit, the regasification system disposed to convert the liquefied natural gas with a first percentage of hydrogen to gaseous natural gas with a first percentage of hydrogen; a blending unit on the marine platform and in fluid communication with each of the regasification system and the at least one hydrogen production unit, the blending unit disposed to receive the gaseous natural gas with a first percentage of hydrogen and blend the received
  • the system may include an offshore marine platform; a source of hydrogen at the marine platform; a first liquified natural gas floating storage unit moored adjacent the marine platform and having storage tanks with liquified natural gas having a first percentage of hydrogen stored therein; a second liquified natural gas floating storage unit moored adjacent the marine platform and having storage tanks with liquefied natural gas having a second percentage of hydrogen stored therein; a regasification system on the marine platform and in fluid communication with the first liquified natural gas floating storage unit, the regasification system disposed to convert the liquefied natural gas with a first percentage of hydrogen to gaseous natural gas with a first percentage of hydrogen; and a blending unit on the marine platform and in fluid communication with each of the regasification system and the source of hydrogen, the blending unit disposed to receive the gaseous natural gas with a first percentage of hydrogen and blend the received natural gas with hydrogen to produce the gaseous natural gas having a second percentage of hydrogen; and a
  • the system may include an offshore marine platform; a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; a liquified natural gas floating storage unit moored adjacent the marine platform and having storage tanks with liquified natural gas having a first percentage of hydrogen stored therein; a liquified hydrogen floating storage unit moored adjacent the marine platform and having storage tanks with liquefied hydrogen stored therein; a first liquefaction unit in fluid communication with the hydrogen production unit and the liquefied hydrogen floating storage unit, the first liquefaction system disposed to convert the gaseous hydrogen into liquefied hydrogen for storage on the liquefied hydrogen storage unit; a first regasification system on the marine platform and in fluid communication with the liquified natural gas floating storage unit, the first regasification system disposed to convert the liquefied natural gas with a first percentage of hydrogen to gaseous natural gas with a first percentage of hydrogen; a second rega
  • the system may include an offshore marine platform; a liquified natural gas floating storage unit moored adjacent the marine platform and having storage tanks with liquified natural gas having a first percentage of hydrogen stored therein; a liquified hydrogen floating storage unit moored adjacent the marine platform and having storage tanks with liquefied hydrogen stored therein; a first regasification system on the marine platform and in fluid communication with the liquified natural gas floating storage unit, the first regasification system disposed to convert the liquefied natural gas with a first percentage of hydrogen to gaseous natural gas with a first percentage of hydrogen; a second regasification system on the marine platform and in fluid communication with the liquified hydrogen floating storage unit, the second regasification system disposed to convert the liquefied hydrogen to gaseous hydrogen; a blending unit on the marine platform and in fluid communication with each of the first regasification system and the second regasification system, the blending unit disposed to receive the gaseous natural gas
  • any of the foregoing offshore production of fuel systems may further include, alone or in combination, any of the following:
  • the marine platform comprises a platform deck and three or more platform legs supporting the platform deck, with at least one seawater intakes disposed along at least one leg and in fluid communication with the water purification unit.
  • the offshore marine platform is a jack-up platform affixed to an ocean floor.
  • a liquified natural gas floating storage unit moored adjacent the marine platform; a first regasification system on the marine platform and in fluid communication with the liquified natural gas floating storage unit; a blending unit on the marine platform and in fluid communication with the first regasification system.
  • One or more combustion turbines disposed to combust hydrogen-based fuel produced on the marine platform.
  • One or more electric generators driven by the combustion turbines One or more electric generators driven by the combustion turbines.
  • a conveyance system extending away from the marine platform.
  • the conveyance system comprises both a gas pipeline and an electrical cable.
  • the water purification unit comprises a water purification vessel having a first chamber and a second chamber with a semi-permeable membrane disposed between the first and second chambers, a seawater inlet in the first chamber; a purified water outlet in the second chamber; a pump for pressurizing the seawater in the first chamber, where the pump is in fluid communication with one or more seawater intakes to draw in seawater for purification.
  • the hydrogen production unit comprises a hydrogen production vessel having a first chamber and a second chamber with a membrane disposed between the first and second chambers, an anode assembly having an anode extending into first chamber provided on a first side a of the membrane; a cathode assembly having a cathode extending into second chamber on a second side of membrane; a power supply electrically coupled to the anode assembly and cathode assembly; an oxygen outlet 190 in first chamber; and a hydrogen outlet in second chamber.
  • the blending unit is also in fluid communication with the hydrogen production unit.
  • a liquified natural gas floating storage unit moored adjacent the marine platform; a regasification system on the marine platform and in fluid communication with the liquified natural gas floating storage unit; a blending unit on the marine platform and in fluid communication with the regasification system and the hydrogen production unit.
  • One or more combustion turbines disposed to combust hydrogen-based fuel produced on the marine platform; one or more electric generators driven by the one or more combustion turbines; and a conveyance system electrically coupled to the one or more electric generators and extending away from the marine platform.
  • One or more combustion turbines disposed to combust produce blended natural gas produced on the marine platform; one or more electric generators driven by the one or more combustion turbines; and a conveyance system extending away from the marine platform.
  • the conveyance system comprises a gas pipeline in fluid communication with the hydrogen production unit.
  • the conveyance system comprises both a gas pipeline in fluid communication with the hydrogen production unit and an electrical cable electrically coupled to one or more electric generators.
  • the water purification unit comprises a water purification vessel having a first chamber and a second chamber with a semi-permeable membrane disposed between the first and second chambers; a seawater inlet in the first chamber; a purified water outlet in the second chamber; a pump for pressurizing the seawater in the first chamber, where the pump is in fluid communication with one or more seawater intakes to draw in seawater for purification.
  • the hydrogen production unit comprises a hydrogen production vessel having a first chamber and a second chamber with a membrane disposed between the first and second chambers; an anode assembly having an anode extending into first chamber provided on a first side of the membrane; a cathode assembly having a cathode extending into second chamber on a second side of membrane; a power supply electrically coupled to the anode assembly and cathode assembly; an oxygen outlet in first chamber; and a hydrogen outlet in second chamber.
  • the plurality of offshore wind turbines provide electricity to the at least one hydrogen production unit, the regasification system and the blending unit.
  • the marine platform comprises a platform deck and three or more platform legs supporting the platform deck, with at least one seawater intake disposed along at least one leg at first distance from an end of the leg and at least one seawater intake disposed along at least one leg at a second distance from an end of the leg, where the second distance is greater than the first distance.
  • a liquified hydrogen floating storage unit moored adjacent the marine platform; a second regasification system on the marine platform and in fluid communication with the liquified hydrogen floating storage unit, wherein the second regasification system is in fluid communication with the blending unit.
  • a first pump disposed to convey liquified natural gas having the first percentage of hydrogen from the first liquified natural gas floating storage unit to the regasification system; and a second pump disposed to convey liquified natural gas having the second percentage of hydrogen from the liquefaction unit to the second liquified natural gas floating storage unit.
  • a plurality of offshore wind turbines disposed in the vicinity of marine platform.
  • the conveyance system comprises a gas pipeline in fluid communication with the blending unit.
  • the conveyance system comprises an electrical cable electrically coupled to one or more electric generators.
  • the conveyance system comprises both a gas pipeline in fluid communication with the blending unit and an electrical cable electrically coupled to one or more electric generators.
  • the source of hydrogen comprises a water purification unit on the marine platform; at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; and a plurality of offshore wind turbines providing electricity to the at least one hydrogen production units.
  • the marine platform has at least a first side and a second side with first liquified natural gas floating storage unit moored adjacent the first side of marine platform and second liquified natural gas floating storage unit moored adjacent the second side of marine platform.
  • One or more combustion turbines 148 disposed to combust the gaseous natural gas having a second percentage of hydrogen; one or more electric generators 150 driven by the one or more combustion turbines; and a conveyance system extending away from the marine platform.
  • a first pump disposed to convey liquified natural gas having the first percentage of hydrogen from the liquified natural gas floating storage unit to the first regasification 1 system; and a second pump disposed to convey liquified hydrogen from the liquified hydrogen floating storage unit to the second regasification system.
  • a plurality of offshore wind turbines disposed in the vicinity of marine platform and electrically coupled to the marine platform to supply electricity to the at least one hydrogen production unit.
  • the conveyance system comprises one of a gas pipeline in fluid communication with the blending unit and an electrical cable electrically coupled to one or more electric generators.
  • a second liquefaction unit in fluid communication with the blending unit, the second liquefaction system disposed to convert the gaseous natural gas having the second percentage of hydrogen into liquefied natural gas having the second percentage of hydrogen.
  • the marine platform has at least a first side and a second side with liquified natural gas floating storage unit moored adjacent the first side of marine platform and the liquified hydrogen floating storage unit moored adjacent the second side of marine platform.
  • a water purification unit on the marine platform at least one hydrogen production unit on the marine platform in fluid communication with the water purification unit; a plurality of offshore wind turbines providing electricity to the at least one hydrogen production unit; and a first liquefaction unit in fluid communication with the hydrogen production unit and the liquefied hydrogen floating storage unit, the first liquefaction system disposed to convert the gaseous hydrogen into liquefied hydrogen for storage on the liquefied hydrogen storage unit.
  • One or more combustion turbines disposed to combust the gaseous natural gas having a second percentage of hydrogen; one or more electric generators driven by the one or more combustion turbines; and a conveyance system extending away from the marine platform.
  • the method may include pumping seawater to a water purification unit mounted on an offshore marine platform affixed to the seabed; utilizing the water purification unit to at least partially purifying the pumped seawater to yield purified water; utilizing a hydrogen production unit mounted on the offshore marine platform to produce gaseous hydrogen from the purified water; liquifying at least a portion of the gaseous hydrogen onboard the marine platform; transferring the liquified hydrogen to a liquified hydrogen floating storage unit moored adjacent the marine platform for storage of the liquefied hydrogen on the liquified hydrogen floating storage unit; and transferring liquified hydrogen stored on the liquified hydrogen floating storage unit to a liquefied hydrogen transport vessel.
  • the method may include pumping seawater to a water purification unit mounted on an offshore marine platform affixed to the seabed; utilizing the water purification unit to at least partially purifying the pumped seawater to yield purified water; utilizing a hydrogen production unit mounted on the offshore marine platform to produce gaseous hydrogen from the purified water; delivering liquefied natural gas to the marine platform, the delivered natural gas having a first hydrogen content; gasifying the delivered natural gas to produce gaseous natural gas; blending the gaseous natural gas with at least a portion of the gaseous hydrogen produced on the marine platform to produce a blended fuel comprising natural gas with a second hydrogen content greater than the first hydrogen content.
  • the method may include pumping seawater to a water purification unit mounted on an offshore marine platform affixed to the seabed; utilizing the water purification unit to at least partially purifying the pumped seawater to yield purified water; utilizing a hydrogen production unit mounted on the offshore marine platform to produce gaseous hydrogen from the purified water; delivering liquefied natural gas to the marine platform, the delivered natural gas having a first percentage of hydrogen; gasifying the delivered natural gas to produce gaseous natural gas having a first percentage of hydrogen; blending the gaseous natural gas having a first percentage of hydrogen with at least a portion of the gaseous hydrogen produced on the marine platform to produce a gaseous natural gas having a second percentage of hydrogen; and liquefying at least a portion of the natural gas having the second percentage of hydrogen.
  • the method may include providing gaseous hydrogen at an offshore marine platform; delivering liquefied natural gas to the marine platform, the delivered liquified natural gas having a first percentage of hydrogen; gasifying the delivered natural gas to produce gaseous natural gas having a first percentage of hydrogen; blending the gaseous natural gas having a first percentage of hydrogen with at least a portion of the gaseous hydrogen to produce a gaseous natural gas having a second percentage of hydrogen; and liquefying at least a portion of the natural gas having the second percentage of hydrogen.
  • the method may include providing gaseous hydrogen at an offshore marine platform; delivering liquefied natural gas to the marine platform, the delivered natural gas having a first percentage of hydrogen; gasifying the delivered natural gas to produce gaseous natural gas having a first percentage of hydrogen; blending the gaseous natural gas having a first percentage of hydrogen with at least a portion of the gaseous hydrogen to produce a gaseous natural gas having a second percentage of hydrogen; combusting a portion of the gaseous natural gas having a second percentage of hydrogen in combustion turbines in order to produce electricity onboard the marine platform; and conveying the produced electricity away from the marine platform.
  • the method may include pumping seawater to a water purification unit mounted on an offshore marine platform affixed to the seabed; utilizing the water purification unit to at least partially purifying the pumped seawater to yield purified water; utilizing a hydrogen production unit mounted on the offshore marine platform to produce gaseous hydrogen from the purified water; liquefying at least a portion of the gaseous hydrogen and storing the liquefied gaseous hydrogen on a liquified hydrogen floating storage unit moored adjacent the marine platform; delivering liquefied natural gas to the marine platform, the delivered natural gas having a first percentage of hydrogen; gasifying the delivered natural gas to produce gaseous natural gas having a first percentage of hydrogen; blending the gaseous natural gas having a first percentage of hydrogen with at least a portion of the gaseous hydrogen produced on the marine platform to produce a gaseous natural gas having a second percentage of hydrogen; combusting at least a portion of the gaseous natural gas having a second percentage of hydrogen in combustion turbines in
  • the method may include providing gaseous hydrogen at an offshore marine platform; delivering liquefied natural gas to the marine platform, the delivered natural gas having a first percentage of hydrogen; storing the delivered liquefied natural gas in a first floating storage unit adjacent the marine platform; gasifying the delivered natural gas to produce gaseous natural gas having a first percentage of hydrogen; blending the gaseous natural gas having a first percentage of hydrogen with at least a portion of the gaseous hydrogen to produce a gaseous natural gas having a second percentage of hydrogen; and combusting at least a portion of the gaseous natural gas having a second percentage of hydrogen in combustion turbines in order to produce electricity onboard the marine platform; conveying the produced electricity away from the marine platform.
  • any of the foregoing embodiments of a method may include, alone or in combination, any of the following:
  • the gaseous hydrogen is produced by the hydrogen production unit utilizing electrolysis.
  • the purified water is produced by the water purification unit utilizing reverse osmosis.
  • the gaseous hydrogen is produced by the hydrogen production unit utilizing electrolysis and the purified water is produced by the water purification unit utilizing reverse osmosis.
  • Delivering liquefied natural gas to the marine platform comprises delivering liquefied natural gas to the first floating storage unit adjacent the marine platform utilizing a liquefied natural gas transport vessel; and further comprising loading liquefied natural gas having the second percentage of hydrogen from the second floating storage unit to the liquefied natural gas transport vessel utilized to deliver the liquefied natural gas having the first percentage of hydrogen.
  • Providing gaseous hydrogen comprises pumping liquefied hydrogen from a liquefied hydrogen floating storage unit moored adjacent the marine platform to the marine platform and gasifying the liquefied hydrogen to produce gaseous hydrogen.

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EP23742470.0A 2022-06-15 2023-06-15 System zur offshore-produktion von kraftstoff Pending EP4540464A1 (de)

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US202263366410P 2022-06-15 2022-06-15
US18/334,964 US11958575B2 (en) 2022-06-15 2023-06-14 System for offshore production of fuel
PCT/NO2023/050141 WO2023244124A1 (en) 2022-06-15 2023-06-15 System for offshore production of fuel

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US20190161146A1 (en) * 2017-11-29 2019-05-30 7 Seas LNG & Power AS Jetty-Less Offshore Terminal Configurations
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