System for offshore production of fuel
AssigneeStena Power & LNG Solutions AS
InventorsSvein Borge Hellesmark, Göran Hermansson
Life of this patent
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Abstract
A method and system for the offshore production of fuel includes an offshore marine platform on which is mounted an ammonia production unit. The ammonia production unit may produce ammonia utilizing raw materials sourced adjacent the marine platform, including seawater and electricity from offshore wind turbines. The produced ammonia may be subsequently liquified and transported away from the marine platform, or conveyed to a remote location via a seabed pipeline. A portion of the hydrogen produced as part of the ammonia production process may be utilized to operate onboard combustion turbines that can in turn drive electric generators onboard the marine platform to produce electricity.
Claims16
A system for offshore marine production of fuel comprising:
- a fixed marine platform attached to a seabed;
- at least one ammonia cracking system on the fixed marine platform disposed to produce hydrogen from ammonia, wherein the ammonia cracking system comprises a cracking reactor with a product gas outlet;
- a liquified ammonia floating storage unit moored adjacent the fixed marine platform and in fluid communication with the ammonia cracking system;
- one or more combustion turbines on the marine platform and disposed to combust hydrogen fuel produced on the marine platform, wherein the one or more combustion turbines are in thermal communication with the at least one ammonia cracking system;
- a hydrogen purification unit disposed on the marine platform and in fluid communication with the ammonia cracking system, the hydrogen purification unit having a purified hydrogen outlet in fluid communication with the one or more combustion turbines providing hydrogen as fuel to the one or more combustion turbines;
- and
- a seabed conveyance system extending from the fixed marine platform.
A system for offshore marine production of fuel comprising:
- a fixed marine platform attached to a seabed;
- at least one ammonia cracking reactor on the fixed marine platform which produces a product gas mixture of at least hydrogen and nitrogen from gaseous ammonia, the ammonia cracking reactor comprising a dissociation vessel having a reaction chamber with a catalyst bed disposed therein, a gaseous ammonia inlet, a product gas outlet, and a heat source disposed to provide heat to the reaction chamber;
- a pretreatment unit on the fixed marine platform, the pretreatment unit having a liquified ammonia inlet and a gaseous ammonia outlet, a product gas inlet and a product gas outlet, wherein the gaseous ammonia outlet is in fluid communication with the gaseous ammonia inlet of the dissociation vessel;
- a liquified ammonia floating storage unit moored adjacent the fixed marine platform and in fluid communication with the liquified ammonia inlet of the pretreatment unit;
- a cryogenic pump disposed to pump liquified ammonia from the liquified ammonia floating storage unit to the pretreatment unit;
- one or more combustion turbines on the fixed marine platform and disposed to combust hydrogen from the ammonia cracking reactor, wherein the one or more combustion turbines are in thermal communication with the at least one ammonia cracking system;
- one or more electric generators driven by the one or more combustion turbines;
- and
- a seabed conveyance system extending away from the fixed marine platform,
- wherein the one or more combustion turbines are the heat source for the at least one ammonia cracking reactor.
Dependencies are inferred from the claim text.