Westerman, Hattori, Daniels & Adrian, LLP.
Fuel gas calorie control method and device
Calories of a first mixed gas are predicted by calculations based on the mixed flow rate of a blast furnace gas and the mixed flow rate of a converter gas measured by flow meters, and preset blast furnace gas calories and converter gas calories; the flow rate ratio of the mixed flow rate of a coke oven gas to a gas turbine consumed fuel gas flow rate is calculated based on the predicted calories, set calories, and preset coke oven gas calories; the mixed flow rate required value of the coke oven gas is calculated based on the flow rate ratio and a gas turbine fuel gas requirement signal corresponding to the gas turbine consumed fuel gas flow rate; and the opening of a coke oven gas flow control valve provided in a fuel gas production system is controlled, based on the mixed flow rate required value, to control the mixed flow rate of the coke oven gas.
Mitsubishi Heavy Industries, Ltd.
F F F C F Y C F F C C C F
F27D F27D F27D C21C F27D Y02P C10L F23N F27B C21B C10K C21B F27B
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Hidekazu Hiroshi
Yamashita Tanabe