Spontaneous inhibition phenomena of corrosion in CCUS system and their mechanisms

摘要

Carbon capture, utili zation, and storage (CCUS) technology has been considered for reducing CO 2 emissions and improving energy efficiency. However, during the capture process, impurities such as O 2, SO2, and NO 2 are present, which accelerate corrosion of transportation pipelin es and wells. Nevertheless, researches also found several interesting corrosion inhibition phenomena in the system. In this study, we summarized the spontaneous corrosion inhibition phenomena during the capture, transportation process, and outlined the corresponding inhibition mechanisms. These include the corrosion inhibition mechanisms of the degradation products of organic amines, inhibition behavior of SO 2 on CO2 corrosion processes. Additionally, this study also proposed several corrosion inhibition me thods in CCUS system. Understanding these corrosion inhibition mechanisms is crucial for corrosion control of CCUS facilities.