Method for detecting radiolysis behavior of 30% TBP (Tri-Butyl-Phosphate)-kerosene

A detection method and technology for kerosene, applied in measurement devices, color/spectral property measurement, instruments, etc., to achieve the effect of short irradiation time

Active Publication Date: 2012-11-14
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, these effects have not been systematically investigated in the analysis of α and γ radiolysis products of solvents at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] With a concentration of 0.1g / L 238 Pu was added into the extraction system as an alpha source for radiolysis, and then the radiolysis products DBP, MBP, and carbonyl compounds of 30% TBP-kerosene were detected and analyzed, wherein DBP and MBP were measured by gas chromatography, and carbonyl compounds were measured by spectrophotometry Measurement.

Embodiment 2

[0022] With a concentration of 2g / L 238 Pu was added to the extraction system as an α source for radiolysis, and then the radiolysis products DBP, MBP, and carbonyl compounds of 30% TBP-kerosene were detected and analyzed, wherein DBP, MBP were measured by gas chromatography, and carbonyl compounds were measured by spectrophotometry The specific operation steps and detection parameters of the detection method are as follows:

[0023] (1) The specific steps for DBP and MBP to be measured by gas chromatography are as follows: firstly, the a-irradiated a 238 Most of the plutonium in the TBP extraction system of Pu is back-extracted into the water phase, reducing the concentration of plutonium in the organic phase. Then the stripped solvent sample is placed in an ice-water bath container, and methyl esterification reaction is carried out in the reactor of the methyl esterification device until the sample solution is stable yellow, indicating that there is an excess of diazomethan...

Embodiment 3

[0026] The method and steps used in Example 2 are the same, the difference is that the reduction and stripping agent is hydroxylamine nitrate-monomethylhydrazine-nitric acid system, the temperature of the gasification chamber is 230°C, the flow rate of carrier gas nitrogen: 0.5 mL / min, and the flow rate of hydrogen : 50 mL / min; air flow rate: 100 mL / min; injection volume: 0.2 μL.

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Abstract

The invention discloses a method for detecting radiolysis behavior of 30% TBP (Tri-Butyl-Phosphate)-kerosene, belonging to the technical field of post-treatment of spent fuel. The method comprises the following steps of: using a radiolysis source to carry out radiolysis on an extraction system in a Purex procedure; subsequently detecting the radiolysis products, i.e. DBP (Dibutyl Phthalate), MBP (Myelin Basic Protein) and carbonyl compounds. The method is characterized in that the radiolysis source is 238Pu. With the adoption of the method, the influence of alpha radiolysis on the TBP-kerosene system can be obtained.

Description

technical field [0001] The invention belongs to the technical field of spent fuel reprocessing, and in particular relates to a detection method for radiolysis behavior of 30% TBP-kerosene. Background technique [0002] The Purex process is currently the only commercially applied water process for spent fuel reprocessing in the world, which includes a co-decontamination cycle, a plutonium purification cycle and a uranium purification cycle. This process is mainly to make the post-treatment feed liquid go through the processes of reduction and stripping, acid-base washing, water washing, etc., and finally extract the uranium and plutonium in the post-treatment feed liquid. [0003] 30% Tributyl Phosphate (TBP) is a commonly used extraction agent in the Purex process. At the same time, in order to improve the physical properties of the extraction agent, it is necessary to add a certain amount of kerosene as a diluent. TBP, kerosene and nitric acid together constitute the extrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N21/31
Inventor 李辉波王孝荣丛海峰苏哲刘占元袁洁琼宋凤丽何辉林灿生
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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