Circulation Gas Control System Of CDQ and Method Thereof

PURPOSE: A system for controlling circulation gas constituents of CDQ is provided to automatically control air blowing volume for controlling the circulation gas constituents in CDQ adjusting to operation circumstances, and a method for controlling the circulation gas constituents of CDQ is provided. CONSTITUTION: In a CDQ (coke dryer quenching) for quench cooling coke of high temperature discharged from coke oven, the system for controlling circulation gas constituents of CDQ comprises an operation control part for calculating theoretic air volume for controlling the circulation gas constituents from information on circulation gas constituents inside the CDQ and air blowing volume blown into the CDQ, calculating correctional coefficient through analysis of actual results of the air blowing volume, and determining a target air blowing volume, wherein a nitrogen blowing pipe capable of blowing nitrogen for cooling is installed at the entrance of a boiler(6) for the CDQ. In a method for controlling circulation gas constituents of CDQ for quench cooling coke of high temperature discharged from coke oven, the method comprises the steps of measuring air blowing volume into the CDQ and analyzing circulation gas constituents in the CDQ; calculating theoretic air volume for controlling the circulation gas constituents, calculating correctional coefficient through analysis of actual results of the air blowing volume, and determining a target air blowing volume; and controlling the air blowing volume so that air as much as the target air blowing volume is blown into the CDQ. 본 발명은 코크스 건식소화설비의 순환가스성분 제어 시스템 및 그 방법에 관한 것으로, 코크스 건식소화설비 내부의 순환가스성분과 코크스 건식소화설비의 내부로 취입되는 공기취입량 정보로부터 순환가스성분 조정을 위한 이론 공기량을 계산하고, 공기취입량 실적 분석을 통해 보정계수를 산출하며, 목표 공기취입량을 결정함으로써, 코크스 건식소화설비내의 순환가스 성분을 조정하기 위한 공기 취입량을 조업 여건에 맞도록 자동적으로 제어하게 됨에 따라, 순환가스의 성분 분석치를 지속적으로 감시할 필요가 없어 업무부하가 경감되며, 목표로 하는 성분으로 안정적인 설비 운전이 가능하게 되는 효과와 더불어, 정확한 공기 취입량을 결정할 수 있어 순환가스중의 H와 CO가스외에 코크스까지 소각시키는 것을 방지한다.