Nippon Steel Corporation and Nissho Iwai Corporation have received an order for 2 units of Coke Dry Quenching equipment from POSCO. The units will be installed at the POSCO Gwangyang Works third and fourth ovens respectively. The CDQ unit is equipped with a charging device to disperse coke. It has a high cooling capacity, and enables efficient heat recovery with littlecooling gas. Furthermore, through the fitting of a continuous discharge device, the unit is compact and easy to maintain. The CDQ equipment uses inert gas, which circulates through a quenching chamber to process quenching and cooling of red-hot coke that is dry distilled in a coke oven. It is quenched in the sealed quenching chamber, preventing the dust emission considered to be an issue in conventional wet quenching. Furthermore, the heat of the red-hot coke is recovered and heat-exchanged into steam by a boiler, with the generated steam used for power generation. The slow cooling of the red-hot coke in the CDQ equipment also improves coke quality and stabilizes blast furnace operations
