无磷水处理剂对炼油回用水缓蚀效果的影响  

Effect on corrosion inhibition efficiency of a phosphorus-free water treatment agent in a refinery's recycle water

作　　者：顾敏[1,2] 朱越平[2] 刘东坡[2] 吴桂荣[2] 黄奕亮[2] 陈晓燕[2] 

机构地区：[1]茂名职业技术学院化学工程系,广东茂名525000 [2]广东石油化工学院环境与生物工程学院,广东茂名525000

出　　处：《石化技术与应用》2014年第6期438-442,446,共6页Petrochemical Technology & Application

基　　金：广东省科技攻关资助项目(项目编号:2011 B010100045);广东省茂名市教育局产学研结合资助项目(项目编号:2011 B 01047)

摘　　要：采用静态挂片的方法,对炼油厂回用水Cl-,SO2-4,HCO-3,Ca2+,p H值等因素对碳钢片腐蚀的影响进行了研究,从单因素、多因素方面考察了3326型无磷缓蚀剂的缓蚀效果。结果表明,Cl-,SO2-4及p H值对腐蚀的影响较大;SO2-4对Cl-的腐蚀有一定的促进作用;添加缓蚀剂后,其对各因素的缓蚀效果均有所提高,并且对SO2-4的缓蚀效果要高于对Cl-的;对低硬度高碱度、高硬度高碱度水质,均能表现出较强的适应性。The effects of Cl-, SOl-, HCO3-, Ca2＋ ,pH value in refinery＇s recycle water on metal corrosion were studied by static weight- loss meth- od,and the efficiency of phosphorus - free inhibitor 3326 was investigated by single factor and multi - factor experiments. The results showed that CI-, SOl- and pH value could significantly affect carbon - steel corrosion, and SO24- could promote the pitting of C1-. But the corrosion rate decreased sharply after adding inhibitor 3326, indicating that 3326 had good performance of corrosion inhibition for carbon - steel, and its inhibition effect for SO24- was better than that for C1-. Besides that,it also exhibited good adaptation to the circulating cooling water that with low hardness and high alkalinity as well as high hardness and high alkalinity.

关 键 词：炼油回用水 无磷缓蚀剂 腐蚀因素 

分 类 号：TG174[金属学及工艺—金属表面处理]