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含氚废气中杂质气体去除材料研制
Preparation of Impurity Elimination Material for Inert Gas Containing Tritium
【作者】 杨勇; 王文华; 李佳懋; 杜阳; 董亮; 成琼; 董兰;
【Author】 YANG Yong;WANG Wen-hua;LI Jia-mao;DU Yang;DONG Liang;CHENG Qiong;DONG Lan;China Academy of Engineering Physics;
【机构】 中国工程物理研究院核物理与化学研究所;
【摘要】 为去除含氚惰性废气中的CH4、水气、O2等杂质气体,采用溶胶凝胶法制备了65%Ni-10%Cu-25%SiO2材料作为杂质气体消除材料,对材料进行XRD、SEM及程序升温还原表征,结果显示,少量Cu的加入增加了Ni的分散度,有助于稳定Ni的形态,避免Ni过早发生氧化。材料可以使Ar中的少量CH4、O2和水气得到有效的去除,在空速1 000 h-1时Ar中φ=1%CH4和φ=1%CO2重整时CH4去除率达到81.5%以上,对于Ar中φ=1%O2的去除率达到91.8%以上,对于Ar中φ=1%水气的去除率达到91.7%以上。实验还发现低浓度的CH4可以与水气及O2发生反应而去除,空速10 000 h-1催化φ=1%水气和φ=1%CH4反应,CH4的去除率均高于80.7%;空速10 000 h-1催化φ=0.67%CH4和φ=0.33%O2的反应,CH4的去除率均高于84.2%。
【Abstract】 In order to eliminate CH4,steam,O2 in inert gas,65%Ni-10%Cu-25%SiO2 is prepared as impurity eliminating material by sol-gel method.At space velocity 1 000 h-1,when φ=1%CH4 and φ=1%CO2 in argon is reforming over the material,the conversion of CH4 is higher than 81.5%.At space velocity 1 000 h1,when the material reacts with φ=1%O2 in argon,the conversion of O2 is higher than 91.8%.At space velocity 1 000 h1,when the material reacts with φ=1%steam in argon,the conversion of steam is higher than91.7%.More experiments show that low concentration CH4 can also reform with O2 and steam over the material,and CH4 can be eliminated by the reforming reaction.
- 【会议录名称】 《核化学与放射化学》2014增刊
- 【会议时间】2014-12-20
- 【分类号】X701;TQ426