Abstract:

SO₄^2- may cause intergranular stress corrosion cracking of nickel-based metal in nuclear power stations， resulting in serious hazards to the economically running of the nuclear power stations. To explore the source of SO₄^2- of nuclear power stations，dynamic dissolving characteristics of several kinds of imported cation exchange resins in hydrogen peroxide solution have been researched. The dissolved liquid of SO₄^2-,TOC are determined by ion chromatography and TOC meter. The results show that the effects of hydrogen peroxide on macro-porous resin and geltype resin are different. The higher the oxidant concentration is，the higher the influence on resin is，and the more SO₄^2- is dissolved. And it is very likely that the desulfonation rate decreases with time，and the change of dissolving rate of organisms is relatively small.

Key words: strong acidic cation exchange resin, hydrogen peroxide, dynamic dissolution, nuclear power station

摘要：

在核电站，SO₄^2-会引起镍基金属的晶间应力腐蚀破裂，对核电站的安全经济运行造成严重危害．为探索核电站SO42-的来源，研究了几种进口阳树脂在H₂O₂溶液中的动态溶出特性，采用离子色谱仪和TOC仪对溶出液的SO₄^2-、TOC进行测定．研究结果表明，过氧化氢对大孔型和凝胶型树脂的影响不同，且氧化剂浓度越高，对树脂的影响越大，溶出的SO₄^2-也越多;脱磺化速率随着时间推移而降低，而有机物溶出速率变化相对较小．

关键词: 强酸型阳离子交换树脂, 过氧化氢, 动态溶出, 核电站

CLC Number: 

• X946