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为有效降低生产成本,北营公司积极开展设备系统改造,其中,1780热轧生产线加热炉改造项目于2015年11月中旬投产运行后,所有指标均满足设计要求,年可降成本1097万元。北营公司1780热轧生产线共有3座步进梁式加热炉,两用一备,投产至今已正常运行7年,每座加热炉最大烟气量为138000m~3/h,烟气温度在450℃~500℃之间。在设备运行过程中,北营轧钢厂通过热平衡分析发现,烟气余热损失占全炉热损失的比例超过30%,
In order to effectively reduce the production cost, Beiyang Company actively carried out the transformation of equipment system. Among them, the 1780 hot rolling mill reformer project was put into operation in mid-November 2015 and all the indicators met the design requirements, with the annual cost reduced by 10.97 million yuan. Beiying 1780 hot-rolled production line has a total of three walking beam furnace, dual-use a preparation, put into operation has been in operation for 7 years, each furnace maximum flue gas is 138000m ~ 3 / h, flue gas temperature at 450 ℃ ~ 500 ℃ between. In the process of equipment operation, Beiying Rolling Mill through heat balance analysis found that the proportion of waste heat loss of flue gas accounts for more than 30% of the total furnace heat loss,