Adaptive control method of electrolytic cell
An adaptive control and electrolytic cell technology, applied in the field of electrolytic aluminum, can solve problems such as the inability to judge the cause of changes in the cell condition and the cell condition, and the inability to truly solve the problems of electrolytic cell control
Inactive Publication Date: 2013-05-22
CHONGQING UNIV
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Problems solved by technology
In an electrolysis workshop, all the electrolysis cells adopt the same control algorithm, but in fact the state of each electrolysis cell is different, and it is obviously impossible to judge the more accurate cell condition and cell condition only based on the data of the last two hours Therefore, studying the control algorithm of the tank control machine alone cannot really solve the control problem of the electrolyzer
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[0040] The embodiments of the present invention are described in detail below.
[0041] Electrolyzers with different lifespans and different cell conditions have different electrolytic capabilities. Therefore, under different electrolytic capabilities, the feeding speed of the electrolytic cell should be different, and cannot be controlled completely according to the uniform concentration change process; similarly, the electrolytic cell is in Different operating states require different energy and materials, that is, the input energy should be related to the operating state. Therefore, the control of the cell control machine requires adaptive adjustment of the control algorithm according to the cell condition and operating state of the electrolytic cell, that is, the basis of the optimization of the electrolytic cell control is the accurate judgment of the electrolytic cell cell condition, the accurate judgment of the operating condition and the oxidation Accurate judgment of the...
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The invention provides an adaptive control method of an electrolytic cell and relates to the field of electrolytic aluminium. The method comprises the following steps of: a first step of analyzing the voltage fluctuating value and the working condition of the electrolytic cell in a certain time bucket during the aluminum electrolysis process, and setting the working condition of a cell controller and an interval value of the alumina concentration; a second step of judging the working condition, and recording the variation, the fluctuating range and the mutation of the voltage fluctuating value of the electrolytic cell in the certain time bucket; a third step of computing the alumina concentration in a certain time bucket according to the initial state and the changing speed of the alumina concentration, and controlling the cell controller of the electrolytic cell so that the working condition of the cell controller of the electrolytic cell and the interval value of the alumina concentration are always optimized. The adaptive control method of an electrolytic cell disclosed by the invention is capable of saving energy and reducing consumption of the electrolytic cell.
Description
Technical field [0001] The invention relates to the field of electrolytic aluminum, in particular to an adaptive control method of an electrolytic cell. Background technique [0002] Electricity consumption is the largest energy consumption in the production process of electrolytic aluminum. With the increasing price of electricity, its proportion in the cost of aluminum is increasing. Therefore, reducing the electricity consumption of electrolytic aluminum is the reduction of aluminum in all electrolytic aluminum plants across the country. Ingot costs and effective ways to increase economic benefits are also key national research topics. [0003] The aluminum electrolysis process is accompanied by complex electrochemical reactions, the conversion of materials and energy is complex, the production environment is extremely harsh, the mechanism of the production process is unclear, and it is difficult to establish a mathematical model; and the production process is highly non-linear,...
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IPC IPC(8): C25C3/20
Inventor 尹刚尹艺臻李卓蔓沈重衡尹松尹冬张艳怡尹在之白家扬尹平
Owner CHONGQING UNIV