Method for measuring and controlling pulsed extraction column in nuclear chemical engineering field

Abstract

The invention belongs to the technical field of nuclear fuel post-treatment, and relates to a method for measuring and controlling a pulsed extraction column in the nuclear chemical engineering field. According to the technical scheme of the measuring and controlling method, an organic-phase continuous pulsed extraction column and a water-phase continuous pulsed extraction column are measured and controlled through the following method: the organic-phase continuous pulsed extraction column is measured and controlled through measuring, calculating and / or judging an interface and emptying signal parameters; the water-phase continuous pulsed extraction column is measured and controlled through measuring, calculating and / or judging a liquid level and an interface, and emptying signal parameters. Based on the measuring and controlling method, the pulsed extraction column in the nuclear chemical engineering field can be measured and controlled more accurately.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel post-processing, and relates to a measurement and control method for a nuclear chemical pulse extraction column. Background technique [0002] The pulse extraction column is the most commonly used important process equipment in the Purex process (Purex process) of nuclear fuel reprocessing in nuclear chemical industry. Elements are separated. The working condition of the pulse extraction column directly affects the safety of nuclear fuel reprocessing production and product quality, so it must be measured and controlled. The main parameters of the measured and controlled include liquid level, interface and emptying signal. According to the difference of the continuous phase medium in the pulse extraction column, the pulse extraction column can be divided into two types: the organic phase continuous pulse extraction column and the aqueous phase continuous pulse extraction column. The upper ex...

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Problems solved by technology

As for the measurement and control instruments, even the personnel in this area cannot directly enter the installation area, so some special methods need to be adopted to meet the measurement and control requirements of the nuclear fuel reprocessing process

[0004] Based on this, in the previous measurement and control process of the pulse extraction column, the liquid level, interface and emptying signals are calculated and determined based on a certain formula, which deviates from the actual situation, resulting in the inability to give correct results and results during operation. Prompt, making the actual health status unknown

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