Chongqing University of Science Technology,School of Chemistry and Chemical Engineering
Three kinds of corrosion inhibitor systems include mannich base, quaternary ammonium salt, and imidazolines, which are applicable to the range of 90~180 ℃, have been studied. 24 kinds of high-temperature corrosion inhibitor formulae had been studied from five aspects include the chemical structure, type of accessory ingredients, conditions of testing, corrosion inhibition effects, and absorption mechanism. Modification ways, which could apply to these three kinds of corrosion inhibitors, had been analyzed. Accessory ingredients which can be used in high-temperature conditions had been generalized. And the effects of structural modifications on corrosion inhibitors’ performance of high-temperature resistance and absorption mechanism had been researched. And some valuable conclusions had been observed, just like quaternization reaction can make the absorption mechanism of mannich base from chemisorption to mixed absorption, there were more rigid rings in the chemical structure of corrosion inhibitors, the effect of the physical adsorption was stronger, and quaternary ammonium salts synthesized by heteroaryl amines have better performance than quaternary ammonium salts synthesized by sample organic amines et al. Last, the review considered the future of high-temperature corrosion inhibitor researches according to the formulation exploration and the mechanism research.