一种新型抗高温酸化缓蚀剂的制备与性能评价

摘要

The quality ratio of thiourea,ethylene polyamine and oleic acid are 0. 2: 1: 2,synthesizing a kind of oleic acid thiourea imidazoline by condensation dehydration reaction. Mixing with surfactant,pyri-dine,aldehyde,alkynol to get a new type of resistance to high temperature acidifying corrosion inhibitor LX-1. Evaluating corrosion inhibition effect of inhibitor,compatibility,resistance to temperature perform-ance. Results show that the corrosion inhibitor performance is good:with 0. 6% of LX-1,carbon steel cor-rosion rate is 0. 015 mm/ a and the inhibiting efficiency of LX-1 against the liquid-phase of carbon steel can be as high as 95% ;having good compatibility with formation ion and various chemical agents;resist-ant to high temperature;when the concentration of hydrochloric acid is 20% and the temperature is 90 ℃,carbon steel corrosion rate 0. 023 mm/ a,the inhibiting efficiency 89. 0% .%硫脲、多乙烯多胺、油酸按照质量比0.2：1：2，通过缩合脱水反应合成出了一种油酸硫脲基咪唑啉，并复配表面活性剂、吡啶、醛、炔醇等，得到一种新型抗高温酸化缓蚀剂 LX-1，对缓蚀剂的缓蚀性能、相容性、抗温性能进行评价。结果表明，缓蚀剂的缓蚀性能良好，LX-1加量为0.6%时，缓蚀率达到95%，腐蚀速率达0.015 mm/ a；与地层离子及各种化学剂相容性好；能抗高温90℃，盐酸浓度20%时，腐蚀速率0.023 mm/ a，缓蚀率89.0%。