POWER SUPPLY EQUIPMENT FOR NATURAL GAS LIQUEFACTION PLANT

摘要

This invention provides a power supply equipment for a natural gas liquefaction plant, comprising a carburetor (3) for heating LNG with a first cooling water, a condenser (4) for heating the LNG from the carburetor (3) by air, a compressor (6) for compressing the air from the condenser (4), a combustor (7) for burning the air from the compressor (6) and the natural gas from the condenser (4), a gas turbine (8) driven by the combustion gas from the combustor (7), a waste heat recovery boiler (20) for generating steam, a steam turbine (21) driven by the steam from the waste heat recovery boiler (20), a steam-condenser (22) for condensing the steam from the steam turbine (21) to water by the first cooling water, a cooling tower (30) for cooling the first cooling water in the carburetor (3) by a second cooling water, a make-up tank (40) for storing condensed water in the condenser (4), a pipe (41) for supplying the water in the make-up tank (40) to a steam turbine system, and a pipe (42) for supplying the water in the make-up tank (40) to a condenser cooling system. According to the above construction, a combined cycle power generation equipment can be constructed even in an area where water is not easily available, and, thus, a liquefied natural gas can be efficiently purified.