FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy. The procedure consists of the following stages: flowrate of coal gas and air is determined in each section using flowrate transmitter of coal gas and air flowrate transmitter. Coal gas and air flowrates are summed to determine total input flowrate. Pressure in furnace is calculated before combustion based on the total input flowrate of the coal gas and total input flowrate of air. The following is determined: coal gas components, ratio between coal gas and air, gas temperature in furnace before combustion using thermocouple. Gas components after combustion and total gas volume are predicted based on equations of the chemical reactions of combustion, and input flowrates of the coal gas and air, the coal gas components, and ration between the coal gas and air. Gas temperature in furnace after combustion is determined, and gas pressure in furnace after combustion is calculated based on the gas pressure in the furnace before combustion, gas temperature before combustion, and gas temperature after combustion. Degree of spent gas fan opening is determined based on the gas pressure in the furnace before combustion, and gas pressure in furnace after combustion is calculated, and this degree is used to control spent gas fan.
EFFECT: enhanced control quality.
6 cl, 5 dwg
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