Simulating the Heat Transfer Process of Horizontal Anode Baking Furnace

Abstract

A transient two-dimensional mathematical model of a horizontal baking firnace is presented. The model combines complex thermal phenomena in a baking process such as air infiltration. evolution and combustion of volatile matters, combustion of packing coke, and heat losses. The predicted results are in good agreement with measured data. Furthermore, the process is simulated under diferent operating conditions such as firing cycle time, airjlow and air infiltration. The simulated results indicate that the fuel consumption decreases as the firing cycle time decreases, it is also found that reducing the airjlow and air infiltration will he& to save &el. The model is proved to be a useful tool for the process optimisation of the bakingfirrnace in the aluminum industry.

A Dynamic Process Model for Predicting the Performance of Horizontal Anode Baking Furnaces

“…In some models, the baking process is modelled in more detail, including the flue gas flow and the heat conduction through the solids. Some authors considered the anode baking furnace as a counter-flow heat exchanger where the solids were treated in a way as if they moved in the opposite direction of the gas flow [9][10][11][12][13][14][15][16][17][18][19][20][21]. In these models, the mass and energy balance equations were solved in one direction along the furnace length and the heat conduction through the solids (anodes bloc, packing coke, and refractory wall) in one or two directions.…”