| 摘要 |
The process comprises cooling the air entering the turbine(s) with a cooling circuit, the cold being produced from the gas process itself and/or by separate refrigeration modules. The cold is transferred to the air in the turbine(s) by exchangers or direct contact in a contactor. - The air entering the gas turbine (120) is cooled by a glycol solution in a contactor (121) preferably filled with packing (123). The glycol solution loaded with water from the air is regenerated in a column (132) of which the reboiler (136) is heated by a heating circuit drawing its energy from a bundle (140) placed in the exhaust gases from the gas turbine. The gas installation is a reception and regasifying terminal for liquefied natural gas, the regenerated glycol is cooled by the regasification tube exchangers (160) in which the liquid natural gas to be regasified (101) circulates on the tube side. Alternatively, the gas installation is a natural gas liquefying station and the glycol is cooled in propane evaporators added in parallel to the propane refrigeration circuit which forms the first stage in gas liquefaction. Alternatively, the gas installation is a mains gas compression station and the glycol is cooled by a refrigeration module, with preliminary cooling of the glycol by exchange with the gas entering the station. The air entering the gas turbine(s) is cooled by exchangers in which a thermal transfer fluid circulates, preferably an aqueous solution of glycol or methanol. This thermal transfer fluid is cooled partially or totally in propane evaporators evaporators added in parallel to the propane refrigeration circuit which forms the first stage in gas liquefaction. Alternatively the thermal transfer fluid is cooled partially or totally by absorption refrigeration modules supplied with heat by a circuit recovering heat by a bundle placed in the gas turbine exhaust gases and/or on exchangers placed after the gas compressors. The condensed water, recovered below the exchangers in collectors is, after storing in tanks reinjected via a reinjection module into the turbine(s) at the level of the combustion chamber or vaporiser. The water from the glycol regeneration column(s) is recondensed in aerocondensers to be reinjected into the turbine(s). The gas installation is a mains gas compression station, the gas to be compressed arriving at the station is cooled by counter- flow with the compressed gas from an aerocooler, in gas/gas or gas/water exchangers. |
