铝电解槽双端节能理论及工业应用

Aluminum electrolytic cell double-ports energy-saving theory and industrial application

介绍了铝电解槽双端节能理论深度研究与开发试验成果,通过对工业条件下热控制模型的研究,建立和构建了双端节能的基本理论和系统架构,分析了炉帮特性与电解质热特性的变化规律,开发了双端节能工业系统(HORRS),并在4台400 kA铝电解槽上开展了工业化运行测试。对比HORRS系统运行前后电解槽槽电压及电流效率变化,对其运行效果与经济社会效益进行评价,通过电解槽能量流的有效聚集和调控,同时实现了“输入端”与“输出端”的节能目标。有望使电解铝工业实现“柔性生产”和对电网的蓄能调峰,同时为可再生能源开发利用、降低CO_(2)排放发挥支撑作用。

This paper presents the in-depth research and experiments results on the theory of double-port energy saving in aluminum electrolytic cells.The basic theory and system architecture of double-port energy saving were established and constructed through laboratory research and thermal control modeling under industrial conditions.The variation law of furnace side characteristics and electrolyte thermal characteristics were analyzed,and the double-ports energy-saving industrial system(HORRS)was developed.The industrial tests were carried out on four sets of 400 kA aluminum electrolytic cells.The changes in electrolytic cell voltage and current efficiency before and after the operation of the HORRS system were compared to evaluate its operational effect and economic and social benefits.Through the effective aggregation and control of the energy flow in the electrolytic cell,the energy saving targets of both the"input"and"output"ports are achieved.It is expected that the electrolytic aluminum industry can realize"flexible production"and energy storage and peak regulation for the power grid,and play a supporting role in renewable energy development and utilization and CO_(2) emission reduction.