Research and application for large scale, high efficiency and energy saving baking furnace technology

Abstract

As the capacity of anode production system increased to 300–600 kt/a, a large scale baking furnace should be designed for the system. Under the condition of furnace size increasing, how to achieve a more homogeneous anode quality and lower energy consumption level are the key points for the technology development. The furnace structure and process parameters optimization are carried out by numerical simulation model and laboratory research. Firing control system hardware and control strategies are optimized to fit the enlargement of furnace size. The first large scale baking furnace has been start up at 2015 in a commercial carbon plant. It achieved a capacity with 340 kt/a. The average energy consumption is around 1.7 GJ/t · anode and power consumption is 37 kWh/t · anode. The measured anode final baking temperature difference is less than ±20 °C.