Combined power cycle with liquefied natural gas (LNG) and synthe

Power plants – Combustion products used as motive fluid

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60 3912, 60 39465, 60728, 481273, 48197R, F02C 100, F02G 300

Patent

active

052953505

ABSTRACT:
Mechanical and electrical power are produced along with synthesis or fuel gas by the partial oxidation process with integrated combustion and steam turbines. By-product vaporized liquefied natural gas for feed to a pipeline for gas consumers is obtained by heat exchange with heat containing streams from the partial oxidation gasification and gas cleaning and purification zone; and optionally from heat containing streams from combustion and/or steam turbine zones which are integrated with said partial oxidation process. Heat from the combustion turbine exhaust gas is used as follows: (1) superheat steam for use in a steam turbine; (2) preheat water saturated clean sulfur-free synthesis or fuel gas with or without supplemental methane enrichment; (3) preheat oxygen gas for said partial oxidation zone; and (4) vaporize LNG. Pre, inter, and after stages of an air compressor are cooled by indirect heat exchange with LNG which is thereby warmed or vaporized.

REFERENCES:
patent: 3631673 (1972-01-01), Charrier et al.
patent: 3720057 (1973-03-01), Arenson
patent: 3726101 (1973-04-01), Arenson
patent: 3771260 (1973-11-01), Arenson
patent: 3788825 (1974-01-01), Arenson
patent: 3978663 (1976-09-01), Mandrin
patent: 4036028 (1977-07-01), Mandrin
patent: 4329842 (1982-05-01), Hoskinson

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