Structure optimization of the dispensing house in a combustion train for a thermal bake-out aluminum reduction cell

1. Introduction The bake-out and start-up technologies of aluminum reduction cells is one of the important factors affecting the service life of cells. The service life of cells is of importance to economic benefit in aluminum reduction cells production. Especially for big prebaked cells, the study on bake-out and start-up is even more important. The present methods of bake-out include aluminum fluid bake-out, coke granule bake-out and graphite bake-out 1,2]. The disadvantage of aluminum ba…

Structure optimization of the dispensing house in a combustion train for a thermal bake-out aluminum reduction cell

The fume bake-out aluminum reduction cell is a novel technology possessing such advantages as easy control for the speed of heating-up, well-distributed temperature, and little cathode and anode oxidation. The key equipment of fume bake-out is a combustion train whose one important part is a dispensing house. This work deals with the numerical model and the flow and temperature fields of the dispensing house, which suggests that uniformity of flow and energy distribution is influenced by the position, shape and direction of the nozzle and cross dimension of dispensing house mainly, but is less influenced by entry speed. The parameters of the dispensing house structure are optimised to satisfy the requirements for a combustion train in fume bake-out, and appropriate dimensions are obtained for a dispensing house structure.