转炉汽化冷却给水系统工艺与运行优化实践

Practice of process and operation optimization of steam cooling water supply system for converter

针对淮钢转炉汽化冷却系统饱和蒸汽回收利用率较低、蓄热器蓄热能力不足和供汽不稳等问题,通过增加蓄热器总容量,采用进汽可调式蓄热器控制系统和蓄热器进口母管和出口母管分离控制,优化蓄热器喷嘴、饱和蒸汽管网,以及加强保温等措施,实现了吨钢回收蒸汽超过92kg/t,自产蒸汽能够完全满足RH真空度小于67kPa的要求,同时系统的运行稳定性得到较大提高。

For the problems such as saturated steam recycling utilization rate is low,the regenerator regenerative ability is insufficient,and steam supply is not stable in Huaigang converter vaporization cooling system,by increasing the thermal storage capacity,the control system adopted regenerative heat exchanger with the admission of adjustable mother tube regenerator import and export of mother tube separation control,optimized the regenerator nozzle and saturated steam pipe network,and strengthened the heat preservation measures,implemented the steam recovery of more than 92 kg/t steel,self-produced vapor can completely meet the requirements of RH vacuum degree is less than 67 kPa,the running stability of the system at the same time was improved greatly.