Importance

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Abstract

Provided is a method of controlling combustion of a regenerative heating furnace. The method controlled includes: a first step of sensing the temperature inside the furnace by a temperature sensor inside the heating furnace; a second step of receiving the measured temperature value inside the furnace, comparing the measured temperature value with a set reference temperature value, and outputting, to a sequence controller, an analog signal corresponding to a difference between the measured temperature value inside the furnace and the set reference temperature value; a third step of controlling combustion, and amounts of fuel, air, and discharged combustion gas of each of the burners by the sequence controller by a program set according to the outputted value in the second step; a fourth step of measuring the pressure inside the heating furnace due to combustion gas according to a combustion load; a fifth step of comparing the measured pressure value with the reference pressure, and outputting, the sequence controller, an analog signal corresponding to a difference between the measured pressure value and the reference pressure; and a sixth step of controlling, according to the outputted value of the fifth step, the discharge amount of combustion gas set in the third step by the sequence controller.

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First Claim