天然气加热炉腐蚀防垢技术研究Ⅱ．预膜与缓蚀阻垢  

Corrosion and inhibiting techniques of gas heating furnace Ⅱ.Pre-filming and corrosion-scale inhibition

作　　者：吴新民[1] 高燕[1] 王羲[1] 王新强[1] 王明彩 

机构地区：[1]西安石油大学,陕西西安710065 [2]浙江巨化集团公司硫酸厂,浙江衢州324004

出　　处：《天然气化工—C1化学与化工》2009年第2期28-30,共3页Natural Gas Chemical Industry

摘　　要：对加热炉的预膜及缓蚀阻垢实验研究,找出了较好的预膜剂WXT-226,阻垢分散剂为WXT-619和缓蚀阻垢剂WXT-265。当pH为6.5～7.0,WXT-226使用浓度为800mg/L～1200mg/L,WXT-619使用浓度为200mg/L,WXT-265的浓度为1500mg/L～2500mg/L时,炉水对碳钢腐蚀率小于0.028mm/a(国家标准<0.125mm/a)、粘附速率小于3.19mcm、污垢热阻小于0.093×10-4m2·h·℃/kJ。A study on the pre-filming and corrosion-scale inhibition of gas heating furnace was conducted to evaluate the reagents used. It was found that the better pretreatment filming agent, anti-scale dispersing agent, and corrosion-scale inhibitor were WXT-226, WXT-619, and WXT-265, respectively. When WXT-226, WXT-619, and WXT-265 were used in the concentrations of 800-1200mg/L, 200mg/L, and 1500-2500mg/L, respectively, at pH 6.5 -7.0, the corrosion rate of carbon steel was less than 0.028 mm/a, which was far below the state pickling standard of 0.125mm/a, the fouling adherence was less than 3.19mcm, and the heat resistance of scale was less than 0.093×10^4 m^2· h·℃/kJ.

关 键 词：天然气 加热炉 缓蚀剂 预膜剂 

分 类 号：TQ050.9[化学工程]