400kA energy-saving and emission-reducing pre-baked aluminum cell

Abstract

A 400kA grade energy-saving and emission-reduction prebaking aluminum electrolytic cell comprises an anode carbon block group, an anode bus, a crust breaking and blanking device, an anode lifting mechanism, a crossbeam and a column, a cell sealing exhaust gas system, a cathode carbon block group, a lining structure and a cell shell structure. The 400kA grade energy-saving and emission-reduction prebaking aluminum electrolytic cell is characterized in that: (1) a top crossbeam and a portal column are supported by a tubular truss beam support structure; (2) steel claws of the anode carbon block group are arranged in an eight-claw symmetrical structure; (3) a new anode configuration scheme is adopted and six aluminum oxide blanking points and two fluoride salt blanking points are designed; (4) a ventilation system for stepwise gas collection is arranged between a horizontal housing plate and a bin; (5) a device is employed to seal an anode rod by utilizing negative pressure suction; (6) a new lining structure is designed according to simulation of a thermo-electric field; (7) the cathode bus is configured in a symmetric manner and arranged in an extensive six-point feeding structure; and (8) a rectangular truss pipe is taken as an air supply pipeline on the cell and a tail gas muffler device of a crust breaking and blanking cylinder. The 400kA grade energy-saving and emission-reduction prebaking aluminum electrolytic cell can help achieve a significant energy-saving and emission-reduction purpose.

Description

technical field [0001] The invention belongs to the technical field of prebaked aluminum electrolytic cell structure, which is the core equipment for electrolytically producing metal aluminum by molten electrolysis, and specifically relates to a super-large 400kA class prebaked aluminum electrolytic cell. Background technique [0002] The structure of the existing prebaked aluminum electrolytic cell can generally be regarded as composed of two major parts, the superstructure and the cathode structure. The upper structure includes the anode carbon block group, the anode bus bar, the shelling and unloading device, the anode lifting mechanism, the girder and the door-shaped column and the sealed exhaust system of the electrolytic cell. The cathode structure includes cathode carbon block group, lining structure and tank shell structure. There are many problems in the existing prebaked aluminum electrolytic cells. To solve these problems, Chinese patent 200510047245.0 once propo...

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Problems solved by technology

[0003] At present, the capacity of the prebaked aluminum electrolytic cell is still increasing, and with the further increase of the capacity of the prebaked aluminum electrolytic cell, the energy consumption of the electrolytic cell and the emission index of flue gas have not improved significantly, which requires design personnel to take seriously and consider

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