causes of foaming in amine absorber

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    • #152
      Nasir Hussain
      Keymaster

      Dear all, what are the possible causes of foaming in Amine Scrubber at Diesel Hydrotreating unit? What are the actions taken to handle the emergency?

    • #235
      Nasir Hussain
      Keymaster

      1. One of the principle causes of amine foaming is the introduction of
      hydrocarbon liquids into the amine contactor. When hydrocarbon
      liquids enter the contactor, they are highly soluble into the amine
      solution and reduce the surface tension of the aqueous solution.
      The reduced surface tension then aids in creating bubbles of gas in
      the amine solution, resulting in foaming.
      Please see very good article;
      https://www.emerson.com/documents/automation/application-note-avoiding-amine-foaming-issues-utilizing-a-gas-chromatograph-rosemount-en-72720.pdf

    • #236
      Nasir Hussain
      Keymaster

      Causes of foaming in amine scrubber;
      1. Condensation of Hydrocarbons in Amine, due to the low temperature of amine than gas.DT should always be positive. The low temperature of Amine and high temperature of the gas creates negative DT which results in condensation of Hydrocarbons in the Amine.
      2. Corrosion particles in the Amine or dirty amine also cause foaming.

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