| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion control method and combustion control device for gasification melting furnace capable of suppressing the generation of unburnt gas, efficiently performing the melting treatment of char and surely making refuse pollution-free by stabilizing the combustion temperature and melting temperature. SOLUTION: A controller 11 analyzes CO concentration in unburnt gas at the outlet of a gasification furnace 4 by an exhaust gas analyzer 7, calculates the combustion air quantity necessary for combustion of decomposed gas in a melting furnace 15 based on the analytic result, and adjusts combustion air regulating valves 12 and 14 to control the combustion air quantity to be supplied to the melting furnace 1. The controller further measures the outlet temperature of a melting part 32 by a thermometer 16, calculates the deviation of the measured temperature from a set target temperature, and controls the supply quantity of char by a char constant-rate feeder 10 based on the result, whereby the decomposed gas is perfectly burnt, and the temperature of the melting part is kept at a proper value to enable the sure melting of ash. COPYRIGHT: (C)2004,JPO
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