再生水消毒对循环冷却水系统的腐蚀速率研究  

Corrosion of Stainless Steel 316L in Disinfected Recycling Water

作　　者：付正辉[1] 黄奎[1] 孙冠中[1] 包哲 李薇[1] 汤烨[1] 

机构地区：[1]华北电力大学资源与环境研究院,北京102206

出　　处：《腐蚀科学与防护技术》2015年第1期64-68,共5页Corrosion Science and Protection Technology

基　　金：中央高校基本科研业务费专项资金资助

摘　　要：无机消毒剂Cl O2和有机消毒剂季铵盐(苯扎溴铵)作为常用的再生水消毒剂对循环冷却水系统具有一定的腐蚀性。通过两种消毒剂的对比,发现消毒后残留的Cl-和氨氮分别是两种消毒剂对316L不锈钢产生腐蚀的主要因素。此外,采用响应面分析法(RSM)和中心组合设计(CCD)分析了温度和流速对316L不锈钢腐蚀速率的作用。结果表明,在低温和低流速的情况下,瞬时腐蚀速率变化较小,产生腐蚀的主要原因还是电化学腐蚀。As common disinfectant inorganic Cl O2 and organic quaternary ammonium salt(benzalkonium bromide) exhibits certain corrosivity for the facilities of the circulating cooling water system. Through a contrast test for the two kinds of disinfectant, it is found that Cl-and ammonia nitrogen respectively are the main factors responsible to the corrosion of 316 L stainless. In addition, the influence of temperature and water flow velocity on the corrosion rate of 316 L stainless steel was analyzed by means of response surface method(RSM) and central composite design(CCD). It follows that the instantaneous corrosion rate changes little at low temperature and low water flow velocity. And the main cause for corrosion is electrochemical corrosion.

关 键 词：CLO2 季铵盐 腐蚀 再生水 

分 类 号：TG172[金属学及工艺—金属表面处理]