燃料ガス化システム、その制御方法及び制御プログラム、並びに、燃料ガス化システムを備える燃料ガス化複合発電システム

摘要

It is intended to provide a fuel gasification system, a control method and a control program for the fuel gasification system, and a fuel gasification combined power generation system provided with the fuel gasification system, whereby even when types and properties of the fuel changes, a calorific value of combustible gas produced by gasification of the fuel is stable while increase or decrease in the amount of char generation is suppressed. A control device (26) of a fuel gasification system (12) controls, depending on an indicator corresponding to the calorific value (SG calorific value) of the combustible gas, the supply of the fuel to a gasification furnace (16) and the supply of the oxygen gas to the gasification furnace (16) so as to change a ratio of the supply of the oxygen gas to the supply of the air supplied to the gasification furnace (16).