초록 ▼

In a coal gasification plant there is a requirement for supplying oxygen to the coal gasifier in order to produce coal gas fuel. An oxygen plant will produce oxygen and nitrogen from an input supply of compressed air. In the presence of a fired gas turbine which is supplied with coal gas fuel, the w

In a coal gasification plant there is a requirement for supplying oxygen to the coal gasifier in order to produce coal gas fuel. An oxygen plant will produce oxygen and nitrogen from an input supply of compressed air. In the presence of a fired gas turbine which is supplied with coal gas fuel, the waste heat from the fired gas turbine may be used to heat compressed air for driving an air cycle turbine. The air cycle turbine in turn drives an air cycle compressor for producing air to the oxygen plant. The nitrogen gas by-product from the oxygen plant is injected into the air cycle for disposal through the air turbine.

대표청구항 ▼

An air bottoming cycle for a coal gasification plant wherein the coal gasification plant includes an oxygen plant for converting pressurized air into oxygen and nitrogen, the oxygen being used in the coal gasification plant: the air bottoming cycle comprising: at least one air bottoming cycle first

An air bottoming cycle for a coal gasification plant wherein the coal gasification plant includes an oxygen plant for converting pressurized air into oxygen and nitrogen, the oxygen being used in the coal gasification plant: the air bottoming cycle comprising: at least one air bottoming cycle first compressor; an air turbine connected to drive the first compressor; a heat exchanger connected between the first compressor and the air turbine: the heat exchanger for counterflowing the compressor discharge air against a heat source whereby a hot motive fluid is produced for driving the air turbine; an air bleed line for transferring a portion of the first compressor discharge air to the oxygen plant; and, a return line for injecting nitrogen from the oxygen plant into the first compressor discharge air.