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Updated: Jul 11, 2025
10:05
Metal Corrosion and the Efficiency of Corrosion Inhibitors in Less Conductive Media
Published on: November 3, 2018
17.9K
Corrosion by Polythionic Acid in the Oil and Gas Sector: A Brief Overview.
Mohammadtaghi Vakili1, Petr Koutník1, Jan Kohout1
1ORLEN UniCRE, a.s., Revoluční 1521/84, 400 01 Ústí nad Labem, Czech Republic.
Materials (Basel, Switzerland)
|November 14, 2023
Summary
Polythionic acid (PTA) corrosion poses risks in refineries. Understanding its mechanisms and implementing mitigation strategies are crucial for protecting equipment and ensuring operational safety.
Area of Science:
- Materials Science
- Chemical Engineering
- Corrosion Science
Background:
- Polythionic acid (PTA) corrosion presents significant challenges in refinery operations.
- It leads to equipment degradation, safety hazards, and increased maintenance costs.
- Understanding PTA corrosion is vital for maintaining refinery integrity.
Purpose of the Study:
- To comprehensively investigate the origin, progression, mechanism, and impact of PTA corrosion.
- To assess the susceptibility of austenitic stainless steels and nickel-based alloys to PTA corrosion.
- To explore practical mitigation and prevention strategies for PTA corrosion.
Main Methods:
- Literature review and analysis of corrosion case studies in refinery environments.
- Metallurgical analysis of affected components.
- Evaluation of influencing factors such as temperature, concentration, and material composition.
- Review of established and novel corrosion control techniques.
Main Results:
- PTA corrosion mechanisms and progression pathways identified.
- Specific vulnerabilities of austenitic stainless steels and nickel-based alloys detailed.
- Key factors influencing corrosion severity elucidated.
- Effective mitigation strategies outlined.
Conclusions:
- A thorough understanding of PTA corrosion is essential for refinery operations.
- Proactive implementation of identified strategies can safeguard infrastructure.
- Minimizing PTA corrosion enhances equipment longevity and operational safety.
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