فهرست نشریات علمی دسترسی آزاد ایران

Amine Gas Treating Units (AGTUs) are critical components in hydrogen production plants, responsible for removing acid gases such as hydrogen sulfide (H₂S) and carbon dioxide (CO₂) from synthesis gas to ensure high-purity hydrogen output. This article provides a comprehensive analysis of corrosion phenomena in AGTUs, examining both the underlying mechanisms and operational factors that exacerbate metal degradation. This study employs a mixed approach combining literature review, laboratory simulations, and field data analysis. Laboratory experiments simulate amine solutions (MEA, DEA, MDEA) under varying CO₂/H₂S concentrations, temperatures, and flow conditions to measure corrosion rates on carbon steel and stainless steel. Field data from operating hydrogen plants are analyzed to validate lab results and identify real-world corrosion hotspots. Electrochemical tests, thickness measurements, and analysis of amine degradation products are used to assess mechanisms and mitigation strategies. The results demonstrate that hydrogen sulfide (H₂S) poses the most acute risk through Sulfide Stress Cracking (SSC), capable of causing sudden and catastrophic equipment failure. Heat-Stable Salts (HSS) further exacerbate corrosion by creating highly aggressive environments in the hot sections of regenerators, leading to accelerated metal loss and reduced amine absorption capacity. Corrosion in amine gas treating units is not an isolated problem but a systemic risk factor that requires integrated management. By combining preventive design, real-time monitoring, proactive maintenance, and chemical control, hydrogen production plants can significantly extend equipment life, reduce unscheduled downtime, and ensure safer, more sustainable operations.