CrazyEngineers
CrazyEngineers

  • Trays in Distillation Columns

    Disha Sharma

    Disha Sharma

    @disha-4xdLsC
    Updated: Oct 26, 2024
    Views: 1.2K
    Hi! I have few queries about column trays:
    1) Are column trays considered as pressure parts or non pressure parts?
    2) Can PWHT be performed in a column with stainless steel trays clamped to tray support rings?
    3) Is PWHT possible on trays welded to tray support rings, with the tray material being 316L SS?

    Thanks
    0
    Replies
Howdy guest!
Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.
Replies

  • Ramani Aswath

    Member • Oct 11, 2012

    The trays in a distillation column do not see any pressure gradient. While post weld heat treatment may help restore micro structure and relieve weld stresses, it is not clear why this is needed for a non pressure application.
    Are you sure? This action cannot be undone.
    Cancel

  • Disha Sharma

    Member • Oct 12, 2012

    Thank you Sir.
    But what about SS trays seal welded to their support rings? If the vessel undergoes PWHT after the trays are welded, then will there be any warpage or damage to the trays?
    Are you sure? This action cannot be undone.
    Cancel

  • Ramani Aswath

    Member • Oct 12, 2012

    Are you sure the vessel as a whole fitted with trays undergo PWHT? That will be difficult with large columns. I do not have much experience in this. Since the trays are seal welded to rings there may be enough stiffening to prevent distortion.
    Are you sure? This action cannot be undone.
    Cancel
Home Channels Search Login Register