胺甲基化反应制备酸化缓蚀剂的研究

以有机酮、有机胺、醛为原料，通过胺甲基化反应合成缓蚀剂，采用在线红外系统监测反应进程，考察不同有机酮、有机胺合成的缓蚀剂的缓蚀性能。试验结果表明，由芳香酮、甲醛、芳香胺合成的胺甲基化产物是一种混合物，其缓蚀性能优异，在腐蚀介质为15%的盐酸溶液、温度90 ℃、时间4 h、缓蚀剂加入量（w）1%的条件下，腐蚀试验的腐蚀速率仅为1.10 g/(m2?h)，达到了石油天然气行业标准中酸化缓蚀剂一级品的要求。

STUDY ON THE PREPARATION OF ACIDIZING CORROSION INHIBITORS BY MANNICH REACTION

Corrosion inhibitors were synthesized by Mannich reaction using ketones,amines and aldehydes as raw materials and the process was monitored by in-situ infrared spectroscopy.The effect of various ketones and amines on the corrosion resistant performance of the synthesized inhibitors was investigated by static weight loss tests.Test results showed that the corrosion inhibitor synthesized by aromatic ketone,formaldehyde and aromatic amine was a kind of mixture with good corrosion resistant performance.When the corrosion medium was 15% HCl solution,system containing 1% of said inhibitor,at a system temperature of 90 ℃ and a contact time of 4 h,the corrosion rate was only 1.10 g/(m2·h),which indicated that the performance of this corrosion inhibitor met the requirement for first-class acidizing corrosion inhibitor in petroleum and natural gas trade standards.