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Delayed Coking – Discussion

Home Forums Conferences 2012 Texas Delayed Coking – Discussion

This topic contains 0 replies, has 1 voice, and was last updated by  4 drums coker 8 years, 6 months ago.

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  • #1867

    4 drums coker
    Participant

    BACKWARMING

    – Valve getting stuck after its been throttled back
    – Increase in active (warming drums pressure 1-2X when throttling back

    HCO FILTRATION

    – Ineffective!

    SHUTDOWN EFFICIENCY

    – Flush fractionator until bottoms product is of LCGO consistency
    – Ready for entry in ~7 days
    – Water wash post RTI chem clean and steam out
    – Good feedback with RTI
    – Steam condensing in OVHD fans so had to steam reflux drum direct

    HEATER TRIP

    Bring feed back when:
    -Velocity & emergency steam
    – Tower pressure rises
    – COT’s drop
    – Drum has enough time to coke for +4 hours

    DRUM UNHEADING & WATER DRAIN

    -Vent line needs to be same size as drain line

    ADVANCE CONTROLS – HTS & FRAC

    – DMC works well

    SPALLING

    – 24 hrs need Bridge-well vs. off-line whole htr spall

    PRESSURE QUENCHING

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