LEAN FUEL INTAKE GAS TURBINE

摘要

A lean fuel intake gas turbine which uses, as a working gas, a mixed gas having a concentration equal to or lower than a flammability limiting concentration and obtained by mixing two types of fuel gases having different fuel concentrations, includes a first mixer configured to mix a second fuel gas having a higher fuel concentration with a first fuel gas having a lower fuel concentration, of the two types of the fuel gases having different fuel concentrations, to generate a first stage mixed gas and a second mixer configured to further mix the second fuel gas with the first stage mixed gas to generate a second stage mixed gas which is the working gas.

主权项

1. A lean fuel intake gas turbine which uses, as a working gas, a mixed gas having a concentration equal to or lower than a flammability limiting concentration and obtained by mixing two types of fuel gases having different fuel concentrations, the lean fuel intake gas turbine comprising:
a compressor configured to compress the working gas to generate a compressed gas; a catalytic combustor configured to burn the compressed gas by a catalytic reaction; a turbine configured to be driven by a combustion gas from the catalytic combustor; a first mixer configured to mix a second fuel gas having a higher fuel concentration with a first fuel gas having a lower fuel concentration, of the two types of the fuel gases having different fuel concentrations, to generate a first stage mixed gas; and a second mixer configured to further mix the second fuel gas with the first stage mixed gas to generate a second stage mixed gas which is the working gas.