Refining Community Logo

Amine chloride limit

Home Forums Sulfur Amine Amine chloride limit

This topic contains 1 reply, has 1 voice, and was last updated by  Anonymous 12 years, 4 months ago.

  • Author
  • #2951

    Freddy Martinez

    What amine chlorde limit do refiners consider necessary to avoid stress corrosion cracking of stainless steels? We normally hold to a limit of 500ppm, but have one unit with 700-800ppm chloride ion which runs at very high acid gas loadings and so depends on a good corrosion inhibitor. The inhibitor contatins some chlorides, which contribute to the problem. Switching to a less effective inhibitor to reduce chlorides will likely increase general metal loss. What is the real limit?

  • #5527


    There’s no real good answer. It becomes unit specific. Some operators have reported issues with very low level ( example 500 ppm ) and others have operated without problem in excess of 1,000 ppm (and sometimes higher).

You must be logged in to reply to this topic.

Refining Community