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Exhaust gas trapping device of aluminum electrolysis cell and control method thereof

A technology of flue gas capture and aluminum electrolytic cell, which is applied in the field of aluminum electrolysis, can solve the problems of not being able to adjust the state of electrolytic cell flue gas capture in time, and achieve the effects of saving manpower and material resources, improving the working environment, and increasing the load

Active Publication Date: 2015-03-25
云南云铝海鑫铝业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the flue gas collection state of the electrolytic cell cannot be adjusted in time during the daily operation of aluminum electrolysis, such as pole change and aluminum tapping, where the tank cover needs to be opened

Method used

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  • Exhaust gas trapping device of aluminum electrolysis cell and control method thereof
  • Exhaust gas trapping device of aluminum electrolysis cell and control method thereof

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the examples.

[0032] Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be considered as limiting the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased.

[0033] Those skilled in the art should understand that "if the electrolysis operation has ended, the valve opening value will be automatically adjusted to check whether the valve opening meets the normal requirements;" in "normal requirements" means: when the electrolysis operation is not in progress, the electrolyzer cover ...

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Abstract

The invention relates to an exhaust gas tapping device of an aluminum electrolysis cell and a control method thereof, belonging to the technical field of aluminum electrolysis. An automatic regulating device and a positioner are additionally arranged on a smoking tube control valve, a control program control is written to connect with a monitoring system; according to the operation of opening a slot cover according to the conditions whether the electrode change, aluminum discharging and the like exist in electrolysis production or not, the opening of the smoking tube control valve is timely regulated according to the needs, the air drafting quantity of the electrolysis cell is controlled according to the practical operation condition of the electrolysis cell, so that not only can the direct-current power consumption of the aluminum electrolysis production be lowered, but also the energy consumption can be lowered on the premise of exhausting the exhaust gas trapping rate; meanwhile, the working environment of normally opening the slot to operate by the electrolysis operation further can be improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis, and in particular relates to a flue gas collection device for an aluminum electrolysis cell and a control method thereof. Background technique [0002] In the production process of electrolytic aluminum, the treatment of electrolytic flue gas adopts alumina adsorption dry purification technology and bag dust removal technology. The main process is: the fluorine-containing flue gas produced by electrolysis is captured by the flue gas capture system on the tank, and then enters the purification system through the branch pipe on the upper part of the tank. The smoke pipe of each electrolyzer is connected to the outdoor overhead smoke exhaust horizontal branch pipe. The fluorine-containing flue gas enters the purification reactor through the main exhaust pipe, and fresh alumina and recycled alumina are added to the purification reactor to carry out the purification reaction. During the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/22C25C3/20
CPCC25C3/20C25C3/22
Inventor 周林刘永强环吉才陈光恒吕松王进录余勇施从旺徐邦剑朱学聪王清华赵虎
Owner 云南云铝海鑫铝业有限公司
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