A gas-steam combined cycle power generation device and method

Abstract

The invention relates to the technical field of energy, in particular to a fuel gas and steam combined cycle power generation device and method. The fuel gas and steam combined cycle power generation device comprises a hydro-generator and a turbine and further comprises a gas generator, an air compressor, a direct-fired boiler, a waste heat boiler, a first boiler barrel and a second boiler barrel, wherein a combustible gas is produced in the gas generator and input into the direct-fired boiler to be burnt; the air compressor sucks in outside air and conveys the outside air into the direct-fired boiler to be mixed with the combustible gas for combustion; a high-temperature and high-pressure gas produced in the direct-fired boiler is discharged out from the discharging end of the direct-fired boiler; the high-temperature and high-pressure gas discharged out of the direct-fired boiler enters a gas space in the first boiler barrel or a gas space in the second boiler barrel; the steam outlet end of the waste heat boiler communicates with the steam inlet end of the turbine; and a cycle flow guiding pipeline is arranged between the first boiler barrel and the second boiler barrel. The fuel gas and steam combined cycle power generation device has the advantages that the structural design is reasonable, cycle power generation can be realized, the power generation efficiency is high and resources are saved.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a gas-steam combined cycle power generation device and method. Background technique [0002] At present, when hydroelectric generators and steam turbines are used to generate electricity, they are all used alone, and no combination of the two has been found for combined cycle power generation. Using hydroelectric generators and steam turbines to generate electricity alone, one is that the power generation efficiency is low (conversion rate) 40%), the second is that the medium containing heat after the work of the hydroelectric generator and the steam turbine is all directly discharged, resulting in a waste of resources. Contents of the invention [0003] In view of the above technical problems, the object of the present invention is to provide a gas-steam combined cycle power generation device and method with reasonable structure design, capable of cycle power generation, high ...

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Problems solved by technology

[0002] At present, when hydroelectric generators and steam turbines are used to generate electricity, they are all used alone, and no combination of the two has been found for combined cycle power generation. Using hydroelectric generators and steam turbines to generate electricity alone, one is that the power generation efficiency is low (conversion rate) 40%), the second is that the medium containing heat is directly discharged after the hydroelectric generator and steam turbine work, resulting in a waste of resources

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