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Corrosion in fertilizer industry - 1.2 Elemental sulphur attack

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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 -  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 Nešic. "Investigation...
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Thesis flowchart...aka...How to decide what to write first in your thesis?

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It was that moment in my thesis writing when I had received a terrible feedback and was asked to overhaul the entire document. It was time to take a break from the screen and go back to basics. I printed out my document and went home. Then I took a break that evening, because it is one of the most underrated but essential things to get everything into perspective. The next day I proceeded to lay out the pages of my thesis chapter-wise on the table. Then I took a blank paper and pad. I thought, "How will I explain my work to my family members in my native language?" So I decided to write down my work in my native language in the form of an algorithm and then rearrange my thesis. I answered the following questions to do so - What is the issue? Where is it encountered? Is it very common? What makes it so very important? What are the steps that people have already taken to solve it? Why have they not been that effective? What is it that I did to solve the issue? How did I do it? ...
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Cathodic protection snapshot

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Name of technique Cathodic protection Use Prevent corrosion Complement protection given by coatings Definition A technique where an ionic current towards the structure from the electrolyte is used to counter the corrosion current flowing out of the structure. CP criteria CP potential of -850 mV vs. CSE An instant off potential of at least -850 mV vs CSE A minimum 100 mV polarization post instant off CP measurement techniques Soil resistivity CIPS DCVG Line current Factors affecting CP requirements pH velocity ionic type ionic concentration temperature Issues with CP Stray current corrosion Insufficient CP potential Insufficient CP current Electrical shorting I will discuss all these with examples in this major course, where you can prepare for the basics for your certification course! Check out the introductory video for the brand new course and click on the link to access! https://corrospective.com/courses/basics-of-cathodic-protection-cp-in-oil-and-gas-industry Practice your CP knowl...
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