中试规模亚硝气调节钚价态工艺研究
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- 英文论文题名：Conditioning of plutonium valance in 1BP by nitrous gases
- 论文作者：周贤明 ; 常尚文 ; 何辉 ; 李高亮 ; 兰天 ; 刘金平 ; 唐洪彬 ; 孟昭凯 ; 陈志旭
- 英文论文作者：ZHOU Xian-ming ; CHANG Shang-wen ; HE Hui ; LI Gao-liang ; LAN Tian ; LIU Jin-ping ; TANG Hong-bin ; MENG Zhao-kai ; CHEN Zhi-xu ; China Institute of Atomic Energy
- 年：2015
- 作者机构：中国原子能科学研究院放射化学研究所;
- 论文关键词：亚硝气 ; 1BP料液氧化 ; HNO_2脱除 ; 无盐调价工艺
- 英文论文关键词：nitrous gases ; oxidation of 1BP feed ; removal of HNO_2 ; salt-free adjustion
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第6册（核化学与放射化学分卷、核化工分卷）
- 语种：中文
- 分类号：TL242
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：206k
- 原文格式：O
- 会议级别：全国
摘要
亚硝气调价工艺由钚价态调节与过量HNO_2脱除两部分组成。设计了氧化塔以及亚硝酸脱除塔并进行了调价工艺验证:当N_2O_4液体为还原剂总量的0.75~1.2倍(摩尔比)、停留时间为1~5 min、料液流量100 L/h时,1BP料液中还原剂的去除率达到99.9%以上,Pu(Ⅲ)(以Fe(Ⅱ)代替)的氧化率在99.9%以上;在空气流量为30~50 m~3/h,氧化后1BP料液流量100 L/h,脱除塔温度35~45℃的条件下,HNO_2脱除倍率能够达到13,HNO_2浓度能够降低到5×10~(-3)mol/L以下。
The technical of conditioning of IBP by nitrous gases(N_2O_4) was consisted of plutonium valance adjustion and the removal of HNO_2.The equipment of oxidation tower and HNO_2 removal tower were designed and the corresponding technical was validated.When the residence time of the 1 BP feed in oxidation tower was 1~5 minutes,the dosage of N_2O_4 was 0.75~1.2 times higher than that of the total reductants,and the flow rate of IBP feed was 100 L/h,more than 99.9% of reductants were oxidized,and the oxidation rate of Pu(Ⅲ),which was substituted by Fe(Ⅱ),was also higher than 99.9%;In the HNO_2 removal tower,when the flow rate of air and oxidized IBP feed was 30 ~50 m~3/h and 100 L/h,respectively.The removal rate of HNO_2 could be reached to 13,the concentration of HNO_2 could be reduced to below 5×10~(-3) mol/L.
The technical of conditioning of IBP by nitrous gases(N_2O_4) was consisted of plutonium valance adjustion and the removal of HNO_2.The equipment of oxidation tower and HNO_2 removal tower were designed and the corresponding technical was validated.When the residence time of the 1 BP feed in oxidation tower was 1~5 minutes,the dosage of N_2O_4 was 0.75~1.2 times higher than that of the total reductants,and the flow rate of IBP feed was 100 L/h,more than 99.9% of reductants were oxidized,and the oxidation rate of Pu(Ⅲ),which was substituted by Fe(Ⅱ),was also higher than 99.9%;In the HNO_2 removal tower,when the flow rate of air and oxidized IBP feed was 30 ~50 m~3/h and 100 L/h,respectively.The removal rate of HNO_2 could be reached to 13,the concentration of HNO_2 could be reduced to below 5×10~(-3) mol/L.
引文
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[3]于思江,刘黎明,费洪澄,等.U(Ⅳ)用作Purex过程中Pu(Ⅳ)还原剂的研究[J].核化学与放射化学,1992,14(4):207-214.
[4]张天祥,王健,吴涛,等.我国动力堆乏燃料后处理中间试验厂热调试进展[J].科学通报,2011,56(21):1679-1682.
[5]张绍绮,隗秀芳,叶国安,等.Purex流程以N_2O_4调节钚价态的研究[J].原子能科学技术,1993,27(3):1360-1371.
[6]李高亮,何辉,等.N_2O_4用于1BP中Pu的无盐调价研究[J].中国原子能科学研究院年报.
[7]王浩文,周贤明,李高亮,等.Pu催化HNO_2氧化U(Ⅳ)的研究[J].核化学与放射化学,2014,36(5):295-299.
[2]顾忠茂,叶国安.先进核燃料循环体系研究进展[J].原子能科学技术,2002,36(2):160-167.
[3]于思江,刘黎明,费洪澄,等.U(Ⅳ)用作Purex过程中Pu(Ⅳ)还原剂的研究[J].核化学与放射化学,1992,14(4):207-214.
[4]张天祥,王健,吴涛,等.我国动力堆乏燃料后处理中间试验厂热调试进展[J].科学通报,2011,56(21):1679-1682.
[5]张绍绮,隗秀芳,叶国安,等.Purex流程以N_2O_4调节钚价态的研究[J].原子能科学技术,1993,27(3):1360-1371.
[6]李高亮,何辉,等.N_2O_4用于1BP中Pu的无盐调价研究[J].中国原子能科学研究院年报.
[7]王浩文,周贤明,李高亮,等.Pu催化HNO_2氧化U(Ⅳ)的研究[J].核化学与放射化学,2014,36(5):295-299.