DEC装置在干法高氟料回炉处理中的应用

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• 英文论文题名：The application of DEC equipment in recycling treatment of UO_2 with high content of fluorine in dry process
• 论文作者：鲁博祥 ; 贺咏波
• 英文论文作者：LU Bo-xiang ; HE Yong-bo ; CNNC Jianzhong Nuclear Fuel Co. ; LTD.
• 年：2015
• 作者机构：中核建中核燃料元件有限公司;
• 论文关键词：干法工艺 ; DEC ; 高氟料
• 英文论文关键词：dry process ; DEC ; UO_2 with high content of fluorine
• 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：TL21
• 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：6
• 文件大小：306k
• 原文格式：O
• 会议级别：全国

摘要

干法工艺进行高氟料回炉处理相较于湿法工艺进行高氟料处理更为烦琐和困难,由于工艺的不同,干法进行高氟料回炉需要在该批生产结束后统一进行,这中间还需要对转炉、反应仓等相关设备进行降温,对反应仓进行改装,卸下喷嘴及附属管线,将回炉装置(包括输料螺旋和装料料斗)连接到反应仓上安装好,然后将物料运送到进料位并放入搅拌料斗填好料封,进行打压等检查合格后按规定进行返炉料生产;该方法耗时耗力,并需要频繁拆装,会对正常生产带来较大的影响。为改变这种现状,我公司在400吨扩产技改项目中重新设计安装了一套DEC回炉料装置,该装置投入运行后,大大简化了干法工艺高氟料处理效率,减少污染风险,并在理论上可以及时处理高氟料,对车间粉末生产的现代化程度、生产效率以及辐射防护水平有极大的提高。
Compared with wet process,recycling treatment of UO_2 with high content of fluorine is more complicated in dry process.Due to differences of two processes,all the UO_2 with high content of fluorine produced in one batch of product needs recycling after the batch is over.Before beginning recycling treatment,temperatures of furnace and reactor chamber have to been reduced;nozzle and related pipes have to been dismantled;recycling equipments(including screw and hopper) have to been installed well;and then the hopper has to been added UO_2 with high content of fluorine to make material sealing,and the UO_2 should be transferred to the appointed place firstly.When sealing test is finished and no leakage is found,the whole production can be started.The method is time consuming and demanding and need dismantle and installment frequently,which lowers the production efficiency.In order to improve this situation,CJNF designed and installed a set of DEC equipment which was used to treat the UO_2 powder with high content of fluorine.Since the operation of DEC,The efficiency of recycling treatment to the UO_2 powder with high content of fluorine has been improved dramatically;contamination risk has been obviously reduced.This method could treat the UO_2 powder with high content of fluorine timely,which significantly improves modernization,efficiency and radiation protection level of the UO_2 production.

引文

[1]蔡文仕,舒保华.陶瓷UO_2制备[M].北京:原子能出版社,1987.
    [2]沈超纯,沈天荣.铀及其化合物的化学与工艺学[M].北京:原子能出版社.
    [3]段德智.核纯陶瓷二氧化铀粉末制备[M].2009.3.
    [4]张登荣,丁建峰.浅谈真空输送[J].机电信息,2004,(24):33-34.