Optimization of Thermal Characteristics and "Output Side Energy Saving" of Aluminum Reduction Cell

This paper analyzes the mechanism of "thermal characteristics" on the electrochemical process of industrial aluminum electrolysis. The basic principle and control model of optimizing the thermal characteristics of aluminum reduction cell, by taking the adjustment of the energy flow as a variable, are proposed. This enables a "decoupling" of the real-time control parameters of aluminum electrolysis (metal level and cell voltage) and the control target. A new concept of "output side energy saving" is put forward. Through the stable control of superheat and the effective collection and utilization of the dissipated heat from the reduction cell, the energy saving goals of "Input Side" and "Output Side" are realized at the same time. In addition, the adjustment of the energy flow at the output makes the electrolytic aluminum plant realize flexible production. This study has the potential to increase the energy efficiency of aluminum electrolysis from the actual 50% to more than 58%.