Abstract:

This paper introduces an upgrading proposal of a 140 t/h CDQ system,and presents differences in production before and after the modification.After the upgrade,the CDQ system steadily operated.The problem of uneven drops in the cooling zone was resolved.The temperature of discharged coke was lowered by 15 ℃.The suction at inlet of the boiler and the resistance of the CDQ system were also reduced.These helped to lower the operating costs of the CDQ system.