对放射性构件的安全处理成为实现核能可持续发展的关键问题之一,一般对松散型污染物的去除所采用的技术对于设备装置缝隙死角的去污效果较差,在核应急事件中,难以满足快速对表面污染物进行固定、屏蔽和去污的要求。为了解决这些问题,亟需开发一种新型的去污技术。采用自制的基料、加入一定量的发泡剂和交联剂制备了泡沫凝胶,对其进行了去污性能评价。该泡沫凝胶对模拟的不锈钢污染样片,有空隙、孔隙污染样片和地面都有良好的去污能力,可根据不同的操作要求选择不同的去污工艺。该泡沫凝胶可干燥成膜,实现了二次废物的最小化,使其有望成为去除核设施表面松散污染的新型材料。
The safety treatment of radioactive components has become one of the key issues to achieve the sustainable development of nuclear energy.Generally,the technology used for the removal of loose pollutants has poor decontamination effect on equipment gaps and dead corners.In the nuclear emergency,it is difficult to meet the requirements of fast fixing,shielding and decontamination of surface pollutants.In order to solve these problems,it is necessary to develop a new decontamination technology.Foam gel was prepared by self-made base material,adding a certain amount of foaming agent and crosslinking agent,and its decontamination performance was evaluated.The foam gel had good decontamination capability for simulated stainless steel contaminated samples,contamination samples with voids or pores and the ground.Different cleaning processes can be selected according to different operation requirements.The foam gel can be dried to form a membrane,achieving two wastes minimization,making it possible to become a new material for removing loose surface pollution on nuclear facilities.
[1] 滕磊,王帅,王小兵.压力流量同步控制的高压水射流去污装置[J/OL].核动力工程:1-5[2020-06-02].http://kns.cnki.net/kcms/detail/51.1158.TL.20200330.1128.004.html.
[2] 郭琦,李方义,李硕,等.高压水射流清洗对基体去污效果及损伤的研究[J].中国机械工程,2014,25(6):817-820.
[3] 邬强.高压水射流技术在反应堆水池去污中的应用[J].辐射防护通讯,2004,24(5):32-34.
[4] 李玉鑫.可剥离膜技术在红沿河核电站放射性污染防护中的探索[J].辐射防护通讯,2016,36(3):42-44.
[5] 谭昭怡,田军华,张子骞,等.可剥离膜的研制和去污实验验证[J].原子能科学技术,2004,38(4):379-381.
[6] 王永仙,梁栋,刘宇辰,等.可剥离去污凝胶流变行为研究[J].当代化工,2018,47(4):715-718,722.
[7] 刘艳阳,葛超,闫洪峰,等.一种针对自脆型涂膜技术专用的移动式去污剂喷洒装置[J].装备制造技术,2018(5):115-117,134.
[8] 陈二娟,李银涛,郭耀楠,等.一种形貌可控的自脆型去污剂的制备及其性能[J].西南科技大学学报,2017,32(3):71-76.
[9] 刘星浩,李银涛,王善强,等.碳钢表面腐蚀性自脆型去污剂制备及其性能[J].西南科技大学学报,2019,34(3):23-27.
[10] 李烨,王萍,孙宇,等.不锈钢表面钚污染的擦拭去污[J].同位素,2011,24(1):48-51.
[11] 何楚琦.强度可调泡沫凝胶的制备及性能研究[D].北京:中国石油大学(北京),2018.
[12] 赵红.清洁型泡沫凝胶的制备及其成胶特性的研究[D].郑州:河南理工大学,2014.
[13] 贾虎,杨欣雨,李三喜,等.双交联型泡沫凝胶的制备及其暂堵压井防漏机理[J].钻井液与完井液,2019,36(3):384-390.
[14] 薛杰,张震,王亚,等.泡沫凝胶堵水剂的室内研究[J].辽宁化工,2012,41(9):921-922,935.
[15] 尚志国,苏国,董玉杰.泡沫凝胶选择性堵水剂的研制与应用[J].钻采工艺,2000(1):72-73.
[16] 梁仓船.凝胶泡沫在煤矿火灾治理中的应用研究[J].能源与环保,2019,41(12):13-16.
[17] Xue D,Hu X M,Cheng W M,et al.Carbon dioxide sealing-based inhibition of coal spontaneous combustion:a temperature-sensitive micro-encapsulated fire-retardant foamed gel[J].Fuel,2020,266:117036.
[18] 王志光.矿用防灭火凝胶泡沫流动特性及现场运用研究[J].同煤科技,2019(4):16-18.
[19] 梁太强.凝胶泡沫材料在矿井防灭火中的应用[J].煤炭科技,2017(4):183-185.
[20] 田兆君,王德明,徐永亮,等.矿用防灭火凝胶泡沫的研究[J].中国矿业大学学报,2010,39(2):169-172,189.
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