Structure and method for reducing cell shutting pressure drop of aluminum electrolysis cell

Abstract

The invention relates to a structure and method for reducing cell shutting pressure drop of an aluminum electrolysis cell. The structure comprises a plurality of temporary bus bars arranged between converging bus bars and short-circuit bus bars at short-circuit port positions, the short-circuit bus bars at the short-circuit port positions are connected with first temporary bus bars at the two endsof vertical post bus bars, the first temporary bus bars at the two ends are connected with the converging bus bars, and the converging bus bars at the cell shutting power inlet end are connected withthe converging bus bars of previous electrolytic cells through second temporary bus bars. According to the structure and method, the mounting operation is simple and easy, and the cost investment islow; and after implementation, the effect is obvious, and the cell shutting pressure drop can be greatly reduced.

Description

technical field [0001] The invention relates to a pressure drop structure, in particular to a structure for reducing the pressure drop of an aluminum electrolytic cell when the cell is stopped, and also relates to a pressure drop method, which belongs to the field of aluminum electrolysis. Background technique [0002] The voltage drop after the shutdown of the aluminum electrolytic cell belongs to the line loss. Because the aluminum electrolysis process uses a strong series of currents, although the cell voltage is low during the shutdown period, the power loss is relatively high, so all aluminum electrolysis companies are trying to find ways Reduce tank voltage during tank shutdown. The average cell voltage of a certain 300kA series electrolyzer after shutdown is about 370mV, and the average overhaul cycle after shutdown is about 35 days. During the shutdown period, each overhaul cell will consume a lot of electric energy, and the annual overhaul is even more expensive. E...

AI Technical Summary

Problems solved by technology

The average cell voltage of a certain 300kA series electrolyzer after shutdown is about 370mV, and the average overhaul cycle after shutdown is about 35 days. During the shutdown period, each overhaul cell will consume a lot of electric energy, and the annual overhaul is even more expensive. Unnecessary energy loss

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