Corrosion Inhibitor

Corrosion Inhibitors for Vacuum Distillation Units

Corrosion inhibitors are essential chemical additives designed to protect metal surfaces from acidic attack and high-temperature degradation in refinery vacuum distillation systems. These inhibitors form protective molecular films on critical equipment, neutralizing corrosive compounds and minimizing metal loss. UNPChemicals' CIMET series utilizes imidazoline chemistry for robust film persistence and fatty amine derivatives for comprehensive surface coverage, providing reliable protection against naphthenic acid corrosion and high-temperature sulfidation in vacuum distillation operations. The tailored formulation ensures long-term equipment integrity while maintaining process efficiency in this demanding refining environment.

Corrosion inhibitors are specialized chemical formulations that safeguard refinery equipment from aggressive degradation mechanisms encountered during vacuum distillation operations. These additives create protective barriers on metal surfaces to combat the dual threats of naphthenic acid attack and high-temperature sulfidation, which commonly occur when processing acidic or high-sulfur crude slates. UNPChemicals' CIMET series employs a balanced combination of imidazoline compounds for durable film formation and fatty amine derivatives for rapid surface coverage, delivering comprehensive protection for critical components like transfer lines, heat exchangers, and vacuum column internals. The optimized chemistry addresses the unique challenges of low-pressure, high-temperature distillation environments while maintaining compatibility with downstream refining processes.

What are Corrosion inhibitors?

Corrosion inhibitors are protective chemicals that form adsorbed layers on metal surfaces to prevent acid-induced degradation and high-temperature sulfidation, crucial for extending equipment lifespan in refining processes.

What are the main types of Corrosion inhibitors?
Primary refinery inhibitors include filming amines, imidazolines, and phosphate esters, with UNPChemicals' CIMET series specializing in imidazoline-fatty amine hybrids optimized for vacuum distillation's unique challenges.

Where are Corrosion inhibitors applied in refining?
These additives are injected into vacuum distillation units, overhead systems, and transfer lines handling acidic crudes or high-sulfur feeds where naphthenic acid and sulfur compounds drive aggressive corrosion.

How to select appropriate Corrosion inhibitors?
Selection requires evaluating crude TAN (Total Acid Number), distillation temperatures, metallurgy, and system water chemistry, prioritizing thermal-stable inhibitors with proven performance against naphthenic acid attack.

Why choose imidazoline-based inhibitors like CIMET?
Imidazoline inhibitors provide superior film persistence under vacuum distillation's high temperatures (>300°C), while fatty amine co-components ensure rapid surface coverage - outperforming conventional amines in high-TAN crude processing.

What operational benefits does CIMET deliver?
Beyond corrosion protection, CIMET inhibitors reduce fouling in heat exchangers, minimize iron contamination of products, and decrease unplanned shutdowns - directly improving refinery profitability.

Corrosion Inhibitor Supplier

UNPChemicals is a professional and trusted corrosion inhibitors supplier manufacturing high quality and a comprehensive range of corrosion inhibitors tailored to your specific refining processes and operational conditions. Our CIMET series corrosion inhibitors are specially formulated to provide reliable protection for your vacuum distillation units and other critical refinery assets.

If you are looking for high-performance corrosion inhibitor solutions that effectively combat naphthenic acid corrosion, high-temperature sulfidation, and other aggressive degradation mechanisms, feel free to contact our technical team for expert recommendations. We provide customized corrosion inhibitor formulations for all your refining and petrochemical applications.