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Coke cutting changes due to Deltavalve installation?

Home Forums Coking Operations Cutting, Drilling, Unheading Cutting Coke cutting changes due to Deltavalve installation?

This topic contains 2 replies, has 3 voices, and was last updated by  Anonymous 10 years, 2 months ago.

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  • #4083

    Braam Mentz
    Participant

    Good day all,
     
    I would like to know from everybody out there if they needed to make any changes to their coke cutting equipment or procedure to enable them to de-coke the coke drum completely.  Seeing that an aditional few feet of coking volume is provided with the addtion of the spool piece between the bottom flange and the deltavalve, was any changes required?
    Regards.
     

  • #5013

    Anonymous

    we had Delta valves installed 3 years ago and had no changes made. I was also worried about the few extra feet of coke from the inlet to the Delta valve but have had no problems with it. Our pilot bit removes all the coke that is there. The only thing I see different is not having a hole all the way to the bottom of drum for the water to drain out. We have plugged the drain line with coke, but this was because operaters left the drain valve open while cutting and did not flush drain line when finished with cut, a practice we do prior to air freeing the drum to keep the drain line from plugging. This is a costly setback, having to get a line mole from the bottom of drain line to the plug.

  • #4985

    Nor Syamrin Wagirin
    Participant

    keep your inlet line flush with quench water all the time to avoid plugging of inlet line..

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