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US 8,661,820 B2Granted
LNG regasification and power generation
AssigneeFluor Technologies Corporation
InventorJohn Mak
Life of this patent
Estimating the term…
Abstract
LNG is regasified with concurrent power production in systems and methods where the refrigeration content of the LNG condenses a low pressure working fluid vapor and in which the combined refrigeration content of the warmed LNG and low pressure working fluid condensate condenses an intermediate pressure working fluid vapor.
Claims15
A method of regasification of LNG and producing power, the method comprising:
- expanding a working fluid in a first expansion turbine to produce an intermediate pressure working fluid vapor and power;
- expanding a first portion of the intermediate pressure working fluid vapor in a second expansion turbine to produce a low pressure working fluid vapor and additional power;
- condensing the low pressure working fluid vapor using refrigeration content of to produce a heated LNG and a second condensate;
- using refrigeration content of the second condensate and using refrigeration content of the heated LNG to condense a remainder of the intermediate pressure working fluid vapor and to produce a first condensate and vaporized LNG;
- and
- combining the first and second condensates to form the working fluid.
3 more elements
An LNG regasification and power generation system, the system comprising:
- a cold box that is configured to allow condensation of a low stage working fluid vapor using LNG to thereby produce heated LNG and to allow condensation of intermediate stage working fluid vapor using the heated LNG and low stage working fluid condensate, and wherein the cold box is further configured to allow vaporization of the LNG using heat content of the intermediate stage working fluid vapor and heat content of the low stage working fluid vapor;
- a first expansion turbine fluidly coupled to the cold box and a second expansion turbine such that the first expansion turbine provides a second portion of the intermediate stage working fluid vapor to the cold box and a first portion of the intermediate stage working fluid vapor to the second expansion turbine;
- wherein the second expansion turbine is configured to produce the low stage working fluid vapor;
- and
- wherein the first expansion turbine is configured to receive an intermediate stage working fluid condensate and the low stage working fluid condensate.
2 more elements
Dependencies are inferred from the claim text.