Combustion control method of the combustion control system and hot air furnace of hot air furnace

摘要

PROBLEM TO BE SOLVED: To provide a combustion control apparatus of a hot blast stove which enables to optimize injection heating values to each furnace, and a combustion control method thereof.;SOLUTION: The combustion control apparatus 40, based on an index (a supplying heating value index) Q_REF showing a heating value of hot air which should be supplied to a blast furnace from a hot blast stove at a blast term of each furnace, establishes a target index value (a heat level index target value) QL_REF0 showing a heat level of a blast term of each furnace, and moreover based on a difference ΔQY between a performance value QY of an index (a heat margin index) showing a heat margin of each furnace and the target value QY_REF, compensates the heat level index target value QL_REF0. In addition, the combustion control apparatus 40 establishes an injection heating value G of a combustion term of each furnace, and controls a quantity of gas flow of a hot blast stove so that a heat level of each furnace is in agreement with the heat level index target value QL_REF after correction.;COPYRIGHT: (C)2012,JPO&INPIT