A Method of Establishing a Mathematical Model for HF Acidity Detection in a 10ka Medium Temperature Electrolyzer

Abstract

The invention belongs the technical field of uranium conversion, relates to a method for indirectly measuring HF acidity, and in particular relates to a method for establishing an electrolyte liquid level and HF acidity relation mathematical model in a 10-kA medium-temperature electrolytic tank. According to the method, liquid seal of the electrolytic tank and the HF acidity value at the corresponding moment are measured, the numerical values are drawn on a coordinate diagram to obtain a scattered point diagram, scattered points scatter near a certain straight line, the equation of the straight line is determined through curve fitting, and a mathematical model is obtained and is as follows: Y is equal to (0.0550X+32.9625)% when the initial liquid seal before electrolysis is 80 to 85 mm; Y is equal to (0.0550X+32.6875)% when the initial liquid seal before electrolysis is 85 to 90 mm; Y is equal to (0.0550X+32.4125)% when the initial liquid seal before electrolysis is 90 to 95 mm; Y is equal to (0.0550X+32.1375)% when the initial liquid seal before electrolysis is 95 to 100 mm; and in the formula, X is electrolyte liquid seal in the electrolytic tank and Y is the acidity of HF in the electrolyte. The acidity of the HF in the electrolyte is indirectly measured by measuring the liquid level of the electrolyte, and the real-time measuring requirement is met.

Description

technical field [0001] The invention belongs to the technical field of uranium conversion, and relates to a method for indirect measurement of HF acidity, in particular to a method for establishing a mathematical model of the relationship between electrolyte liquid level and HF acidity in a 10kA medium-temperature electrolytic cell. Background technique [0002] A large amount of fluorine gas is needed in the production of uranium chemical industry in the nuclear industry, which is obtained by electrolysis of HF. This process is called the electrolytic fluorine production process. In the process of electrolysis, the acidity of HF in the electrolyte should be detected in real time. However, under the existing technical conditions, it is not possible to directly detect the acidity of the electrolyte in China, and there is no public report on this technology abroad. At present, the method of manual operation is used to detect the acidity of HF in the electrolytic cell: that is...

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Problems solved by technology

However, under the existing technical conditions, it is not possible to directly detect the acidity of the electrolyte in China, and there is no public report on this technology abroad.

At present, the method of manual operation is used to detect the acidity of HF in the electrolytic cell: that is, within a certain period of time, manually pass through the sampling hole of the medium-temperature electrolytic cell, take a small amount of electrolyte as a test sample, and send it to the laboratory for analysis and calculation of the electrolyte. Acidity, unable to guarantee real-time detection requirements

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