| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas turbine combustor enabling a stable combustion to be carried out while suppressing an increase in the concentration of emitted CO even if composition of fuel gas is changed when low calorie gas having a low calorific value and low combustibility is used as fuel gas and ignited.SOLUTION: A control device for a gas turbine combustor 2 of this invention is configured to have a carbon dioxide concentration meter 701 for measuring carbon dioxide concentration in heat increased gas that is fuel gas formed by mixing a low calorie gas 60 and a high calorie gas 80, is configured such that a first flow regulating valve is mounted at a first fuel system for supplying fuel to an inner peripheral swirler 201 of a burner 300 of the gas turbine combustor 2 and a second flow regulating valve is mounted at a second fuel system for supplying fuel to an outer peripheral swirler 202, and there is provided an inner peripheral fuel ratio calculation unit 710 for regulating the openings of the first flow regulating valve and the second flow regulating valve on the basis of the carbon dioxide concentration measured by the carbon dioxide concentration meter 701 and calculating the inner peripheral fuel ratio of fuel supplied to the gas turbine combustor 2. |
