| 摘要 |
A gas turbine driven powerplant (10) having one or more compressors (20, 22) for producing a down stream air flow, a compressor heat exchanger (34) positioned down stream of the compressors (20, 22) followed by a side stream flow coolant line (50), a regenerator (58) positioned down stream of the heat exchanger (34) and side stream coolant line (50), a combustor (48) positioned down stream of the regenerator (58), one or more turbines (24, 28) positioned down stream of the combustor (48) and mechanically coupled to the compressors (20, 22), and a power turbine (32) positioned down stream of the turbines (24, 28). Combustible effluent flows through heat exchanger (34) and to combustor (48), and air discharged from the compressors (20, 22) flows through heat exchanger (34) and to coolant line (50) and regenerator (58). Heat is transferred from the compressor discharge air to the combustible effluent, thereby producing cooling air and heating the combustible effluent. Heat exchanger (34) can be a heat exchanger or a methane/steam reformer which produces a hydrogen-rich, low NOx, steam diluted combustible effluent. In alternative embodiments, power output is augmented by injecting cooled compressed air directly into the combustor (48) to increase the mass flow through the turbines (24, 28, 32), and exhaust heat is recuperated with a counter-current flow of combustible and water, or water and air, in a conventional once-through heat recovery unit (118). In further embodiments, a small portion of the cool air is combined with the recuperation water in the heat recovery unit (118) to allow vaporization of the water throughout the initial portion of the heat exchange path and form a two-phased feed of water and air to the combustor (48). Additionally, in all embodiments a portion of the cooled compressed air can be processed by a compressor/expander for providing coolant to the turbines, compressors, and auxiliary equipment. |
