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Fuzzy Control Method for Aluminum Electrolysis

A technology of fuzzy control and aluminum electrolysis, applied in the field of aluminum electrolytic cells, can solve the problems of large temperature deviation of the primary crystal, high equipment requirements, and inaccurate partitioning, etc.

Active Publication Date: 2016-06-22
鄂尔多斯市蒙泰铝业有限责任公司
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Problems solved by technology

However, in the actual operation process, due to the complexity of the measurement of the primary crystal temperature and high equipment requirements, conventional online detection cannot be realized, and when the primary crystal temperature is calculated by the theoretical formula, the deviation of the primary crystal temperature is caused by incomplete component analysis and other reasons. large, resulting in inaccurate zoning, and the nine-zone control law is difficult to apply effectively

Method used

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  • Fuzzy Control Method for Aluminum Electrolysis

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Embodiment Construction

[0027] The present invention will be further described below in combination with embodiments.

[0028] Taking an aluminum electrolytic cell (200KA) in a certain workshop as an example, the fuzzy control method for aluminum electrolysis of the electrolytic cell includes the following steps:

[0029] Step 1. Carry out temperature classification of aluminum electrolyte

[0030] The temperature control center value of the measured electrolytic cell is 950°C. The temperature of the aluminum electrolyte is set as the second level between 900°C and 950°C. for 3 poles.

[0031] Step 2: Grading the primary crystal temperature

[0032] The primary crystal temperature is described by the change trend of aluminum electrolyte temperature, molecular ratio, voltage, and feeding amount. First, determine the change trend of aluminum electrolyte temperature. The change trend of aluminum electrolyte temperature is expressed by weighted moving average method. The change trend is set to A, A=(W...

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Abstract

The present invention provides a fuzzy control method for aluminum electrolysis, comprising the following steps: step 1, grading the electrolyte temperature, step 2, grading the primary crystal temperature, and step 3, using the control strategy provided by the nine-zone control method to regulate the electrolytic cell. Compared with related technologies, when the fuzzy control method for aluminum electrolysis of the present invention is applied, the primary crystal temperature is described by the change trend of electrolyte temperature, molecular ratio, voltage, and feeding amount, which is more accurate than the results obtained by online detection and theoretical calculation. Accurate, so the control area of ​​the aluminum electrolytic cell can be more accurately partitioned, and the nine-zone control method can be better used to control the aluminum electrolytic cell.

Description

【Technical field】 [0001] The invention relates to the technical field of aluminum electrolytic cells, in particular to an electrolytic fuzzy control method for aluminum electrolytic cells. 【Background technique】 [0002] The control of the traditional aluminum electrolytic cell mainly depends on people, that is, the operation status of the electrolytic cell and the stability of the cell are largely affected by the management level of the process engineer. However, the ability of process engineers is uneven, which seriously hinders the realization of electrolytic process standardization. If the abnormality is not found in time or the process decision is wrong, the thermal balance of the electrolytic cell will be seriously damaged, the stability of the electrolytic cell will be reduced, and the process conditions will fluctuate greatly, which will have a negative impact on the energy saving and consumption reduction of the electrolytic cell. In the related art, in order to so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/20
Inventor 姚翩翩彭优
Owner 鄂尔多斯市蒙泰铝业有限责任公司
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