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Method for reducing noise in pole replacing process of electrolytic bath

A process noise and electrolytic cell technology, which is applied in the field of reducing the noise of the pole changing process, can solve the problems of needle vibration noise and voltage instability, and achieve the effects of reducing electrolysis energy consumption and improving production and economic benefits.

Inactive Publication Date: 2018-06-08
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for reducing the noise in the pole changing process of the electrolytic cell, so as to solve the phenomenon of voltage instability and a large amount of needle vibration noise in the current pole changing process

Method used

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Examples

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Embodiment 1

[0009] Taking a 400kA class electrolyzer as an example, a method for reducing the noise in the pole changing process of the electrolyzer is described in detail. It is calculated that the pole changing process requires energy of 560mVh.

[0010] In this embodiment, the additional voltage process of changing poles is as follows: the first step, +150mV, 60 minutes (1 hour), the second step, +100mV, 120 minutes (2 hours), the third step, +50mV, 180 minutes (3 hours); this scheme can greatly reduce the noise of the electrolytic cell changing process.

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Abstract

The invention discloses a method for reducing noise in the pole replacing process of an electrolytic bath. According to the method, a method of three-step additional voltage is adopted for reducing the noise in the pole replacing process of the electrolytic bath. Specifically, an additional voltage value is set in the manner that the maximum value of the first-step additional voltage and the second-step additional voltage is 150 mv, the maximum value of the third-step additional voltage is 90 mv, and the unit of the additional voltage is 10 mv. The method can solve the problems that at the present stage, voltage generated in the pole replacing process is unstable, and much needle vibration noise is generated, electrolysis energy consumption is reduced and production and economic benefits are generated.

Description

technical field [0001] The invention relates to a method for reducing the noise in the pole changing process, in particular to a method for reducing the noise in the pole changing process of an electrolytic cell. Background technique [0002] The aluminum electrolysis process of large prebaking tanks consumes anodes, and the anodes are consumed to a certain extent and become residual electrodes. The residual electrodes need to be replaced with new anodes in time to maintain the normal operation of electrolytic production. Due to shell breaking, open furnace, new anode heating, new anode long package and other reasons during the pole change operation, the voltage of the electrolyzer is unstable, and there will be a lot of needle vibration noise. If it is not dealt with in time, it will affect the stability of electrolytic production. As a result, the energy consumption of electrolysis increases, the efficiency decreases, and the electrolysis environment deteriorates, which af...

Claims

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Application Information

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IPC IPC(8): C25C3/06
CPCC25C3/06
Inventor 康自华陈婷陈才荣曹斌
Owner GUIYANG AL-MG DESIGN & RES INST