Floating system for liquefying natural gas
AssigneeShell Oil Company
InventorDavid Bertil Runbalk
Life of this patent
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Abstract
A floating system for liquefying natural gas comprising a vessel provided with a plant for liquefying natural gas having an inlet for natural gas and an outlet for liquefied natural gas, a feed supply system for supplying natural gas to the inlet of the plant, one or more storage tanks for storing liquefied natural gas, and an off-loading system for transporting liquefied natural gas between the storage tank(s) and a tanker, which floating system further comprises a vaporization system having an inlet for liquefied gas and an outlet for vapour.
Claims18
A process for liquefying natural gas comprising:
- providing a floating system for liquefying natural gas comprising a vessel provided with a plant for liquefying natural gas having an inlet for natural gas and an outlet for liquefied natural gas, a feed supply system for supplying the natural gas to the inlet of the plant, at least one storage tank for storing liquefied natural gas, and an off-loading system for transporting the liquefied natural gas between the at least one storage tank and a tanker, wherein the floating system further comprises a vaporization system having an inlet for liquefied gas and an outlet for natural gas vapour wherein the outlet of the vaporization system is connected to the inlet of the plant for liquefying natural gas;
- supplying natural gas to the inlet of the plant at a liquefaction plant inlet pressure;
- liquefying the natural gas to form liquefied natural gas;
- storing the liquefied natural gas in said at least one storage tank of the vessel;
- in the vaporization system vaporizing liquefied natural gas from the at least one storage tank to natural gas vapour;
- supplying the natural gas vapour to the inlet of the plant;
- wherein the vaporization system draws liquefied natural gas from the at least one storage tank and pumps it to a pressure above the liquefaction plant inlet temperature.
A process for liquefying natural gas comprising
- providing a floating system for liquefying natural gas comprising a vessel provided with a plant for liquefying natural gas having an inlet for natural gas and an outlet for liquefied natural gas, a feed supply system for supplying the natural gas to the inlet of the plant, at least one storage tank for storing liquefied natural gas, and an off-loading system for transporting the liquefied natural gas between the at least one storage tank and a tanker, wherein the floating system further comprises a vaporization system having an inlet for liquefied gas and an outlet for natural gas vapour wherein the outlet of the vaporization system is connected to the feed supply system;
- supplying natural gas to the inlet of the plant at a liquefaction plant inlet pressure;
- liquefying the natural gas to form liquefied natural gas;
- storing the liquefied natural gas in said at least one storage tank of the vessel;
- in the vaporization system vaporizing liquefied natural gas from the at least one storage tank to natural gas vapour;
- supplying the natural gas vapour to the inlet of the plant;
- wherein the vaporization system draws liquefied natural gas from the at least one storage tank and pumps it to a pressure above the liquefaction plant inlet temperature.
Dependencies are inferred from the claim text.