液氯汽化器的腐蚀与防护.pdfVIP

第 46卷 第 4期 氯 碱 工 业 Vo.l 46, No. 4 2010年 4月 hlorAlkali Industry Apr. , 2010 液氯汽化器的腐蚀与防护 * 1 2 1 戴昆仑 , 王学智 , 苗春葆 ( 1. 青岛海晶化工集团有限公司, 山东 青岛 266042; 2. 青岛科技大学, 山东 青岛 266042) [] ; ; [ ] : ; , ; ; : ; ;, pH , [ ] TQ114. 268 [] B [ ] 1008- 133X(2010) 04- 0035- 03 Corrosion of vaporizers for liquid chlorine and its protection 1 2 1 DA I K unlun , WANG X uezh i , M IA O Chunbao ( 1. QingdaoH ygain hem ical Industry Group o. , Ltd. , Qingdao 266042, hina; 2. Q ingdaoUniversity of Science and Technology, Qingdao 266042, hina) K ey words: liquid chlorine evaporator; corrosion; protection Abstract: The causesof tubes corrosion penetration in vaporizers for liquid chlorine are analyzed. The causes include the faults in manufacture of equipment, the enhanced corrosivity of water because the quality ofwater becomesworse owning to the heating way of steam, the electrochem ical corrosion caused by oxygen dissolved inwater, and the corrosion in the sitesof sedmi entsgenerated by interm ittent produc tion. The anticorrosive measures are proposed, which includes that strict quality management for the manufacture of equipment, adding corrosion and scale inhibitors into water, and adding sodium tri polyphosphate into water to increase its pH value. After adopting the above anticorrosive measures, the service life of equipment is prolonged. (! 1 ∀ ) 1 t/a 2001 8, 2002 2 2004 10 1 65m 1m