Distributed Air and Fuel Humidification Gas Turbine Combined Cycle Approach

Abstract

The invention discloses a gas turbine combined cycle method which can be used for distributed air and fuel humidification, and relates to gas turbine technology. An air humidification device is arranged between the gas turbine compressor outlet and a combustion chamber, and the compressed air is humidified by the humidification system and then The preheating enters the combustion chamber, and the heat source for air humidification is provided by the external medium and low temperature heat source; the fuel is also humidified and preheated by the humidifier before entering the combustion chamber. The gas turbine combined cycle method of the present invention can make full use of low-grade heat to improve the performance of the gas turbine combined cycle. Under the same conditions as the temperature before the turbine, the compressor pressure ratio and the component efficiency, the thermal efficiency index of the conventional gas turbine combined cycle can be improved by about 10%. %-15%, the output power index per unit air flow is increased by 20%-30%.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a cycle method for gas turbines. Background technique [0002] In the industrial process, there is a large amount of medium-low and low-temperature heat that is difficult to use efficiently. This heat is either directly discharged or taken away by cooling water, resulting in a large amount of energy waste. Effective utilization of low-temperature waste heat from these industrial processes can save energy and reduce emissions. [0003] Gas turbines are a new generation of power devices utilizing clean energy, which can efficiently and cleanly convert natural gas, coal gas (such as integrated coal gasification combined cycle) or oil into electricity. In order to improve the efficiency of the gas turbine, on the one hand, the performance of the gas turbine itself can be improved, such as increasing the outlet temperature of the combustion chamber, increasing the pressure ratio...

AI Technical Summary

Problems solved by technology

[0002] In the industrial process, there is a large amount of medium, low and low temperature heat that is difficult to use efficiently. These heat are either directly discharged or taken away by cooling water, resulting in a large amount of energy waste.

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