CLOSED CYCLE TYPE GAS TURBINE UTILIZING LOW TEMPERATURE HEAT SUCH AS LNG

摘要

PURPOSE:To perform the stable supply of evaporated gas without increasing a size of the equipment by a device wherein water in a heating equipment is heated utilizing waste heat of combustion gas in a heater of a closed cycle type gas turbine, and then the heating equipment is used as an evaporator for a low temperature medium. CONSTITUTION:In a closed cycle type gas turbine utilizing low temperature heat of LNG, medium gas from a medium gas compressor 1 is circulated through a regenerative heat exhanger 5, heater 4, medium gas turbine 2, and an LNG evaporator 6. An electric generator 3 is driven by rotation of the turbine 2. LNG is fed by a pump 18 from a piping 29 to the evaporator 6 through a piping 31 to be evaporated. Then, the evaporated gas is supplied to gas consumers from a piping 38. When the gas turbine gets into a trouble, valves 43-49 are fully closed and valves 51-53 are fully opened, so that combustion gas in the heater 4 is exhaust out through an introduction pipe 24 and its openings 25, thereby to heat water within a submerged paper riser 19. Then, LNG is heated so as to be evaporated by thus heated water within the riser 19.