Skip to main content

Corrosion in fertilizer industry - 1.2 Elemental sulphur attack

Image
By

WATCH THE VIDEO HERE

OR READ ON BELOW!

  •  Elemental sulphur attack is NOT sulphidation or hydrogen sulphide corrosion.

  • It is an aqueous corrosion phenomenon.

  • It considers two modes - 
    1. acidification of sulphur - formation of sulphuric acid
2.    direct cathodic reduction of sulphur with anodic dissolution of iron


  • The lowering of pH is the main source of corrosion in both the methods.

  • The phenomenon is temperature dependent. It increases with increase in temperature and becomes particularly severe above the melting point of sulphur (~112.8 degree Celsius).

  • Hydrogen sulphide present in the petroleum may aggravate the sulphur attack by enhancing uniform pitting corrosion.

  • Monoethylene glycol is used to prevent condensate formation ans may be present in traces in the feedstock petroleum. This enhances the sulphur attack in the form of uniform corrosion, and crevice corrosion.

References: 
    • Fang, Haitao, Brown, Bruce, Young, David, and Srdjan NeÅ¡ic. "Investigation Of Elemental Sulfur Corrosion Mechanisms." Paper presented at the CORROSION 2011, Houston, Texas, March 2011.
    • Yoon, Yuhchae, Srinivasan, Sridhar, Yap, Kwei-Meng, and Russell D. Kane. "Elemental Sulfur and Speciation in High Pressure High Temperatures Oil and Gas Well Environments: Their Role in Stress Corrosion Cracking of Corrosion Resistant Alloys." Paper presented at the CORROSION 2017, New Orleans, Louisiana, USA, March 2017.
    • Yaakob, Nurul & Singer, M. & Young, David. (2015). Elemental sulfur corrosion of carbon steel in the presence of sulfur solvent and monoethylene glycol. NACE - International Corrosion Conference Series. 2015. 



        😀Happy learning!😀

        Comments

        Post a Comment

        Welcome to the CORROSPECTIVE BLOG! Scroll along for more posts! Looking forward to your feedback!
        P.S. Don't forget to check out the free quizzes!

        Popular posts from this blog

        Types of MARINE corrosion

        By
        Types of MARINE corrosion The marine environment is one of the most corrosive environments.  Its corrosivity is due to the ionic concentration of the seas and oceans, temperature variations, wind velocities, depth of the sea, and biological elements. As a result, the corrosion on marine structures such as ships, FPSO, and offshore platforms, appears in multiple forms. Hence, it is important to learn about the basic types of corrosion as applicable to the marine environment. Some of these types of corrosion in a marine environment are - Uniform corrosion due to sodium, magnesium, and calcium salts Uniform corrosion is characterized by the removal of the material all over the surface. It leads to thinning of the walls. Pitting in active-passive alloys such as aluminium Active-passive alloys have a thin oxide film on the surface. A small break due to the chlorides in the seawater allows the penetration of the water and ions, leading to pit formation. Crevice corrosion in fixtures and ...
        Post a Comment
        Read more

        CAREER OPTIONS IN CORROSION

        By
          CAREER OPTIONS IN CORROSION The first time I studied corrosion was in 2009. The last 14 years have taught me one important thing - The path of a career in corrosion is not as straightforward as we are led to believe. Whether we are starting as a student of corrosion, or are entering the field after working as a non-corrosion person, there is always some career pathway that we are not aware of. There are research projects, certifications , audits, inspections , etc. EveryEng gave me the opportunity to share my learnings about the possible options in the field of corrosion . If you are someone who is starting or wants to switch to/between corrosion and its related fields, here is a short presentation for you! https://www.everyeng.com/mentor/course/view/3559864f 😀 Happy learning! 😀
        Post a Comment
        Read more