草酸分解工艺研究进展  

Research progress on oxalic acid decomposition process

作　　者：张晓腾 邢运曈 李磊 胡彦涛 陈勇 侯学锋 侯留东 马敬 ZHANG Xiaoteng;XING Yuntong;LI Lei;HU Yantao;CHEN Yong;HOU Xuefeng;HOU Liudong;MA Jing(Institute of Beijing Nuclear Chemical Research and Design,China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China;CNNC Engineering Research Center for Fuel Reprocessing,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司北京核化工研究设计院,北京100840 [2]中核核燃料后处理工程技术研究中心,北京100840

出　　处：《化学工程》2024年第6期82-88,共7页Chemical Engineering(China)

摘　　要：在乏燃料后处理过程中,草酸常作为钚的沉淀剂,草酸钚滤液因为其中含有部分钚需要返回钚纯化循环,其中的草酸会影响钚的萃取,因此在返回钚纯化循环之前需分解滤液中的草酸。同时在民用化工领域草酸在有机物降解过程中作为中间体积累,威胁水体安全,故在多个领域需要分解草酸。对民用化工领域和核化工领域采用的几种草酸分解工艺的研究进展进行总结,归纳几种草酸分解的工艺方法、应用情况并分析其特点,并根据乏燃料后处理领域的工艺特点和应用需求,分析其在后处理领域的应用前景,重点分析在乏燃料后处理领域得到应用的锰催化分解草酸工艺,并总结锰催化分解草酸的几种反应机理,并根据此提出工程应用存在的问题以及未来的研究方向。In the reprocessing of spent fuel,oxalic acid is often used as the precipitator of plutonium.Because the plutonium oxalate filtrate contains some plutonium,it needs to be returned to the plutonium purification cycle.But the oxalic acid in the filtrate will affect the extraction of plutonium.Therefore,it is necessary to decompose the oxalic acid in the filtrate before returning to the plutonium purification cycle.In the field of civil chemical industry,oxalic acid accumulates as an intermediate in the process of organics degradation,which threatens the water security,so oxalic acid needs to be decomposed in multiple fields.The research progress of oxalic acid decomposition processes summarized used in civil chemical industry and unclear chemical industy was summarized.The oxalic acid decomposition processes and their application situation and characteristics were analyzed,and also the application prospect in the field of spent fuel reprocessing was analyzed according to the process characteristics and application requirements of this field.The process of manganese catalyzed decomposition of oxalic acid used in the field of spent fuel reprocessing was analyzed,their reaction mechanism were summarized,and the problems in engineering application and the future research direction were proposed.

关 键 词：草酸分解 均相催化 锰催化 机理分析 

分 类 号：TL241.1[核科学技术—核燃料循环与材料]