Reinforced smoke discharging mode in aluminum cell opening operation

A technology of aluminum electrolytic cells and smoke exhaust pipes, which is applied in the field of strengthening the smoke exhaust method when the aluminum electrolytic cell is opened, can solve the problems of the limitation of the gas collection efficiency of the electrolytic cell, the high emission of pollutants, and the unsatisfactory effect, etc., to achieve Good smoke exhaust effect, simple structure and easy implementation

Inactive Publication Date: 2006-02-22
SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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AI Technical Summary

Problems solved by technology

When the hood is opened, the pollutant overflow is controlled by increasing the exhaust volume of the exhaust system. However, due to the constraints of the structure and other factors, the increased air volume is extremely limited, and the local resistance of the structure is also very large.
At this time, the effect of controlling the overflow of pollutants is not ideal, so that the improvement of the gas collection efficiency of the electrolyzer is limited, and the emission of pollutants remains high.

Method used

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  • Reinforced smoke discharging mode in aluminum cell opening operation
  • Reinforced smoke discharging mode in aluminum cell opening operation
  • Reinforced smoke discharging mode in aluminum cell opening operation

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Embodiment Construction

[0020] The implementation of the present invention is very easy. Utilize the usual airtight structure of the electrolytic cell, namely, the cell chamber upper space surrounded by the cell shell 1 and the cathode top cover material surface, the horizontal cover plate 5 and both sides and the end sealing cover 2 is the implementation cell Side-suction plenum. The suction pipe connection port 6 can be connected at any position that does not affect the operation, at the end, on the groove superstructure, in single-point or multi-point or strip-shaped, etc. modes. The air is directly exhausted to the upper space of the tank chamber, and this structure exhausts the air from the opening of the sealing cover in the form of air suction at the side of the tank, so as to control the emission of pollutants and improve the gas collection efficiency of the electrolytic cell.

[0021] Although the suction pipe connection port 6 adopts the multi-point or strip access method, which is more com...

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Abstract

The invention discloses a smoke discharging method of aluminum cell, especially to an intensified smoke discharging method by hood-open processing. The invention accomplishes air-breathing by using air-proof space, which is formed by catelectrode, groove shell, horizontal cover plate of superstructure and seal closure, slot space on anode surface mulch as static pressure cabinet, ventilating structure and intensified ventilating path. The invention can ventilate efficiently, increase gas-collecting efficiency and inhibit contaminant emitting.

Description

Technical field [0001] The invention relates to a smoke exhaust method for an aluminum electrolytic cell, in particular to a method for strengthening the smoke exhaust during the cover-opening operation of the aluminum electrolytic cell. Background technique [0002] With the continuous advancement of electrolytic aluminum technology, the capacity of the electrolytic cell is getting larger and larger, and the flue gas generated during the electrolysis process is also increasing. The flue gas is mainly CO 2 , CO, HF, CF 4 gas. In the modern prebaked anode electrolyzer, the tank shell and cathode, the upper mechanism and the sealing covers on both sides and ends form a closed space. Along the longitudinal centerline of the electrolytic cell, a gas-collecting pipe is installed on the furnace chamber of the electrolytic cell along the longitudinal length. There are many holes on the longitudinal sides and ends of the gas-collecting pipe, and its ends are connected with the pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/22
CPCC25C3/22
Inventor 杨晓东张荫蓬王汝良刘雅锋曹成山王桂芝赵劲松邹智勇艾秀娟
Owner SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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