聚丙烯酸对蒸汽发生器二次侧泥渣颗粒的分散效果  

Dispersion Effect of Polyacrylic Acid on Sludge Particles in the Secondary Side of Steam Generator

作　　者：刘佳露 王骏 但体纯 杨顺龙 赖宏宇 邓清泉 吴申奥 操容 肖调兵 陈银强 桂春 LIU Jialu;WANG Jun;DAN Tichun;YANG Shunlong;LAI Hongyu;DENG Qingquan;WU Shenao;CAO Rong;XIAO Diaobing;CHEN Yinqiang;GUI Chun(China Nuclear Power Operation Technology Co.,Ltd.,Wuhan 430223,China;Fujian Fuqing Nuclear Power Co.,Ltd.,Fuzhou 350318,China)

机构地区：[1]中核武汉核电运行技术股份有限公司,武汉430223 [2]福建福清核电有限公司,福州350318

出　　处：《腐蚀与防护》2024年第9期80-84,共5页Corrosion & Protection

摘　　要：压水堆核电站蒸汽发生器(SG)二次侧泥渣颗粒主要成分为铁氧化物,采用静态沉降试验考察了分散剂聚丙烯酸(PAA)对Fe_(3)O_(4)和Fe_(2)O_(3)铁氧化物颗粒的分散效果。结果表明:PAA明显减缓了Fe_(3)O_(4)和Fe_(2)O_(3)颗粒的沉降速率,其对前者的分散效果更优;PAA对颗粒的分散效果随着颗粒粒径的减小而增强,PAA对粒径在12μm以下的Fe_(3)O_(4)颗粒具有明显的分散效果;PAA对铁氧化物颗粒保持较好分散效果的有效质量浓度范围较宽,在μg/L至mg/L级别;PAA对粒径小于28μm的SG真实泥渣具有明显的分散效果,PAA的加入使得泥渣颗粒的悬浮率从34.05%提高至56.93%。The main component of sludge particles in the secondary side of steam generator(SG)of PWR nuclear power plant was iron oxide.The dispersion effect of polyacrylic acid(PAA)on Fe_(3)O_(4)and Fe_(2)O_(3)iron oxide particles was investigated by static sedimentation tests.The results show that the sedimentation rate of Fe_(3)O_(4)and Fe_(2)O_(3)particles slowed down with PAA addition,and it showed better on Fe_(3)O_(4)particles.The dispersion effect of PAA on iron oxide particles increased with the decrease of particle size,and PAA had obvious dispersion effect on Fe_(3)O_(4)particles with particle size below 12μm.The effective mass concentration of PAA to maintain high dispersing effect on iron-based particles was quite wide,ranging fromμg/L to mg/L.PAA had obvious dispersing effect on SG real sludge in particle size less then 28μm,and the addition of PAA improved its suspension efficiency from 34.05%to 56.93%.

关 键 词：聚丙烯酸(PAA) 铁氧化物颗粒 静态沉降试验 分散效果 压水堆核电站 

分 类 号：TM623[电气工程—电力系统及自动化]