摘要
含硫酸盐高放废液在玻璃固化过程中往往出现黄相。为消除黄相,在工程上不得不大大降低废物氧化物的包容量。文章提出了一种在罐式玻璃固化的加料中添加还原剂,使硫酸盐分解,并使分解产物进入中放废物流出物,从而解决黄相问题的办法。文中给出了在不同操作方式下,硫酸根在工艺系统中的分布,并讨论了固化冷凝液全返回到料液,长期运行后,硫酸根在系统中累积对操作的影响。
In order to suppress the 'yellow phase' often found in the vitrificationmelter for processing sulfate-containing HLW, waste loading of glass had to belowered sharply, resulting in poor economy. A method is presented here that candecompose the sulfate in HLW by adding a reducing agent into the melter, andthe decomposed gases are then trapped by soda solution in the washing tower tobe treated as intermediate level liquid waste. Sulfate distribution in the processunder different operation conditions is given, and the effect of sulfate contentbuild-up in the process system caused by feeding back condensate on processgieration is discussed.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1990年第4期58-65,共8页
Atomic Energy Science and Technology
关键词
高放射性
废物
液体
玻璃
固化
High Level Waste(HLW)
Vitrification
Sulfate
'Yellow phase'
