摘要
在对加热炉的清洗、钝化进行了研究的基础上,探讨了加热炉的预膜及其正常运行时的缓蚀阻垢处理.结果表明,pH值为6.5～7.0、阻垢分散剂WT-618加量为200 mg/L、预膜剂WT-206加量为800～1200 mg/L条件下进行预膜处理,预膜质量好、膜较薄,预膜效果佳;缓蚀阻垢剂WT-275具有很好的缓蚀、阻垢性能,能很好的抑制沉积物在金属表面的附着,同时具有很强的分散能力,正常运行条件下缓蚀阻垢剂WT-275的加量为800～1200 mg/L时,加热炉水对碳钢腐蚀率为0.010 mm/a(国家标准为低于0.125 mm/a)、污垢热阻为0.37×10-4m2·h·℃/kcal (国家标准为低于5.0×10-4m2·h·℃/kcal)、黏附速率为2.33 mg/cm2·mon.
Based on the study for the cleaning and passivation of heating furnaces, it is discussed for the heating furnaces to pre-form the film and conduct the corrosion and scale inhibition during the normal running period. The results show that under the conditions of the pH value 6.5—7.0, the concentration 200 mg/L for the anti-scale dispersing agent WT-618, and the concentration 800—1200 mg/L for the preformed film agent WT-206, the quality of the preformed film is good and the film is thin and effective. The corrosion and scale inhibitor WT-275 has excellent efficiency of corrosion and scale inhibition, can inhibit the sediments adhering to the metal surface well, and has powerful ability of dispersion. When the concentration of corrosion and scale inhibitor WT-275 is 800—1200 mg/L, the corrosion rate of carbon steel is 0.010 mm/a (the state standard is less than 0.125 mm/a), the heat resistance of scale is 0.37×10 -4 m 2· h ·℃/kcal (the state standard is less than 5.0×10 -4 m 2· h ·℃/kcal) and the fouling adherence is 2.33mcm.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2005年第4期164-167,共4页
Natural Gas Industry
基金
长庆油田分公司资助项目"加热炉系统清洗与缓蚀阻垢工艺技术研究"(CQC 2001 113)的部分研究成果
