On-line real time measuring method and measurer for aluminium electrolyzing parameters

A technology of real-time measurement and aluminum electrolysis, applied in the field of temperature measurement method and the instrument used for measurement, can solve the problems of sampling process error, inability to measure, difficulty in saving energy consumption, etc., and achieve the effect of increasing production

Inactive Publication Date: 2002-06-05
程留恩 +1
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Problems solved by technology

[0002] In the current electrolysis, the verification and measurement of various parameters such as the concentration of alumina, the temperature of the initial crystal of the electrolyte, etc., is based on on-site sampling, and it takes about 1-2 days to perform laboratory analysis in the laboratory using traditional methods. The time is too long, the electrolytic cell cannot be effectively controlled in time, and the sampling process brings great errors due to human factors, which is meaningless for guiding production
And other useful parameters (electrolyte convective heat transfer coefficient, electrolyte comprehensive flow rate and variation of alumina concentration) cannot be measured
It makes it impossible for people to implement scientific management of the aluminum electrolytic cell, and can only manage the electrolytic cell based on the operator's experience, which makes it difficult to save energy consumption, improve production and ensure quality

Method used

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  • On-line real time measuring method and measurer for aluminium electrolyzing parameters
  • On-line real time measuring method and measurer for aluminium electrolyzing parameters
  • On-line real time measuring method and measurer for aluminium electrolyzing parameters

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Embodiment Construction

[0016] Measurement method of the present invention comprises the following steps: as figure 2 , 3 ,

[0017] (1) Determination of electrolyte temperature, primary crystal temperature of electrolyte, measuring instrument includes two parts of probe 10 and secondary instrument 20, measures 5 points altogether, inserts probe 10 of measuring instrument in the electrolytic cell, records electrolyte temperature, electrolyte The primary crystal temperature is transmitted to the measurement interface of the secondary instrument 20 as an electrical signal.

[0018] (2) Use the secondary instrument 20 of the measuring instrument to amplify and process the measurement electrical signal output by the probe 10, and calculate the parameters of the electrolysis operation according to the set mathematical model. Table 1 shows 5 points of the 60KA aluminum electrolytic cell measurement results.

[0019] dot

Electrolyte temperature ℃

Electrolyte initial crystallization temp...

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Abstract

An on-line real-time aluminium electrolyzing parameters measuring process includes the steps of detecting the primary crystal temperature by inserting the measurer probe into electrolyzer and sendingout the primary crystal temperature signal; and processing the signal and calculating other electrolysis parameters according to the set mathematical model. The probe of the present invention includes thermocouple, metal ball and protecting tube, and the thermocouple inside the protection tube has its end inserted to the geometric center of the metal ball. The present invention can measure and find out important aluminium electrolyzing parameters timely and precisely, and this makes it possible to realize the autocontrol of aluminium electrolyzer for raising its current efficiency, reducing the power consumption and raising the yield.

Description

technical field [0001] The invention relates to a temperature measurement method and an instrument used for the measurement in a high temperature and strong corrosion environment, in particular to an online real-time measurement method and a measuring instrument for aluminum electrolysis parameters. Background technique [0002] In the current electrolysis, the verification and measurement of various parameters such as the concentration of alumina, the temperature of the initial crystal of the electrolyte, etc., is based on on-site sampling, and it takes about 1-2 days to perform laboratory analysis in the laboratory using traditional methods. If the time is too long, the electrolytic cell cannot be effectively controlled in time, and the sampling process brings great errors due to human factors, which is meaningless for guiding production. And other useful parameters (electrolyte convective heat transfer coefficient, electrolyte integrated flow rate and variation of alumina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/20
Inventor 张金平程留恩康全林干益人刘莲萍
Owner 程留恩
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