Comparative Study of Pyrolysis Behaviors of Simulated Radioactive Spent Resin and Pure Resin
1. China Nuclear Power Design Company Limited(Shenzhen), Shanghai 200241, China;
2. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, China
Abstract：The pyrolytic weightlessness characteristics of simulated radioactive spent resin and pure resin were compared by the thermogravimetric analyzer. The simulated spent cation exchange resin containing 0.1 g/L Co, Cs and Sr respectively had the same pyrolysis pattern as pure cation exchange resin under nitrogen atmosphere. Under air atmosphere with 20% oxygen (volume fraction), Co, Cs or Sr had little effect on the pyrolysis of cation exchange resin. Compared with the pure cation exchange resin, the pyrolysis temperature of simulated spent cation exchange resin was slightly decreased while the amount of residue didn’t change. Under nitrogen or air atmosphere, Boron (B) at the concentration of 13 g/L hindered the pyrolysis of simulated spent anion exchange resin. Compared with the pure anion exchange resin, the pyrolysis temperature increased and the amount of residue increased by 4%-5% (mass fraction). It was also found that oxygen in air atmosphere reduced the amount of residue of resin and decreased the pyrolysis temperature of cation exchange resin, but increased the pyrolysis temperature of anion exchange resin.
YAO Bing 1,SHEN Jianhua 2,HUANG Zhengliang 2 et al. Comparative Study of Pyrolysis Behaviors of Simulated Radioactive Spent Resin and Pure Resin[J]. 化学反应工程与工艺, 2019, 35(2): 152-158.
