摘要
以甲醛、二乙胺和苯乙酮为原料合成了曼尼希碱缓蚀剂,通过正交试验设计得出了最佳合成工艺:反应温度130℃,反应时间6 h,甲醛、二乙胺和苯乙酮的摩尔比0.1:0.13:0.13,pH值为3。通过红外光谱测试,证实了目标产物的结构。对合成出的最优化缓蚀剂ST-2进行了性能研究,发现缓蚀剂用量对缓蚀效果影响明显,当缓蚀剂质量分数达到0.5%时已经达到标准中一级指标水平。ST-2与缓蚀增效剂丙炔醇复配具有良好的协同作用。对于质量分数为15%HCl在90℃下的酸化体系,缓蚀剂的最佳配方为0.1%ST-2+0.5%丙炔醇。
Mannich base corrosion inhibitor was synthesized from formaldehyde, aldehyde, diethylamine and aeetylbenzene. The optimal synthetic reaction conditions were obtained through orthogonal experiments, i.e. reaction temperature 130℃, reaction time 6 hr, molar ratio of aldehyde, ketone and amine 0.1：0.13：0.13 and pH value 3. FTIR spectrum testing confirmed the structure of objective products. The study of performance of the inhibitor ST - 2 shows that the dosage of inhibitor has an apparent impact on inhibition effect. The corrosion inhibition efficiency reaches the first class level of SY standard at 0.5% of corrosion inhibitor concentration. In addition, there is a good synergistic effect between ST- 2 inhibitor and propargyl alcohol. The optimal compounding is 0.1%ST -2 ＋0.5% propargyl alcohol for the acidizing system with 15% HCl at a temperature of90℃.
出处
《石油化工腐蚀与防护》
CAS
2010年第4期11-14,共4页
Corrosion & Protection In Petrochemical Industry
关键词
缓蚀剂
曼尼希碱
丙炔醇
协同作用
缓蚀机理
corrosion inhibitor, mannich base, propargyl alcohol, synergistic effect, inhibition mechanism
