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A method for measurement and control of pulse extraction column for nuclear chemical industry

A technology of pulse extraction column and measurement and control method, which is applied to the program control and electrical program control in the sequence/logic controller, can solve the problems of unknown operating conditions, deviations, inability to give results and prompts, etc., and achieve stable operation. The effect of reliable and high measurement and control requirements

Active Publication Date: 2021-03-19
CHINA NUCLEAR POWER ENG CO LTD
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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

Method used

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  • A method for measurement and control of pulse extraction column for nuclear chemical industry
  • A method for measurement and control of pulse extraction column for nuclear chemical industry
  • A method for measurement and control of pulse extraction column for nuclear chemical industry

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] 1. Measurement and control of organic phase continuous pulse extraction column

[0041] The principle of measurement and control of an exemplary organic phase continuous pulse extraction column is as follows: figure 1 As shown, when the organic phase continuous pulse extraction column runs stably, the liquid level is stable at the overflow port, and the interface is in the lower expansion section. Measure and control the continuous pulse extraction of the organic phase by measuring and calculating and / or judging interface and emptying signal parameters, in which the interface parameters are calculated figure 1 The pressure difference between the two points 2 and 3 in the expansion section on the medium pulse extraction column is obtained by combining the pressure difference judgment and calculation of other points; the emp...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 李晓薇马世海张博吴珂崔国华陈朝东
Owner CHINA NUCLEAR POWER ENG CO LTD
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