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Corrosion in fertilizer industry - Part 1.1

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The fertilizer industry is as complex as any other industry in terms of corrosion.

Its corrosion issues begin from the storage area itself.

There are four major areas that need to be looked at from the corrosion point of view -

  1. Production
  2. Storage
  3. Transportation
  4. Field application

In the production stage, there are a few sub-steps.


The first step begins with desulphurization.

The motive is to remove the sulphur.

This sulphur is present in the feedstock, which is the raw material to make the hydrogen for ammonium.

The feedstock is petroleum and sulphur is an impurity. Along with this, there may be some produced water as well.

This petroleum is stored in tanks made of carbon steel.

It is transported to the process through carbon steel pipelines.

Carbon steel is said to have less severe corrosion due to elemental sulphur.

This corrosion due to elemental sulphur has mechanisms different from sulphidation and hydrogen sulphide corrosion.


Watch the video for a detailed explanation



Click here for PART 1.2!




😀Happy learning!😀

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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 NeÅ¡ic. "Investigation...
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