使用异构烷烃中 30% 和 45% TBF 的改良型 Purex 工艺流程动态测试比较

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2024-04-23 DOI:10.1134/s1066362224010053

A. A. Naumov, N. D. Goletskii, E. A. Puzikov, M. V. Mamchich, A. S. Kudinov

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引用次数: 0

摘要

摘要比较了使用乏核燃料模拟溶液和异链烷烃中 30% 和 45% 的三丁基锡化合物作为溶剂，在防护手套箱中进行的第一个溶剂萃取循环流程图的离心接触器试验结果。结果表明，将 TBP 浓度提高到 45% 会导致以 30% TBP 和异链烷烃 L 为溶剂的相同流程所获得的产品质量下降。通过比较实验和计算机模拟的各阶段萃取单元成分分布曲线，发现硝酸和铀浓度的一致性令人满意。同时还发现，考虑到锆、锝和镎与络合剂的相互作用，锆、锝和镎萃取的模拟模型需要改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Comparison of Dynamic Tests of the Modified Purex Process Flowsheet Using 30 and 45% TBF in Isoparaffin

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Comparison of Dynamic Tests of the Modified Purex Process Flowsheet Using 30 and 45% TBF in Isoparaffin

Abstract

Results of centrifugal contactor rig trials of the flowsheet of the first solvent extraction cycle in protective glove boxes using simulated solutions of spent nuclear fuel and 30 and 45% TBP in isoparaffin as a solvent are compared. It was shown that an increase in the TBP concentration to 45% resulted in deterioration of the quality of the products obtained by the same flowsheets with 30% TBP in Isopar L as a solvent. Comparison of experimental and computer simulated profiles of component distribution across the stages of extraction units demonstrated satisfactory agreement in nitric acid and uranium concentrations. At the same time, it was found that simulation model of zirconium, technetium, and neptunium extraction requires improvement considering interaction of these elements with complexing agents.

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来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.