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what does the word “delayed” mean for the delayed coker unit?

Home Forums Coking Technical Fractionation & Process Process what does the word “delayed” mean for the delayed coker unit?

This topic contains 2 replies, has 2 voices, and was last updated by  Anonymous 9 years, 9 months ago.

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  • #2362

    ruslannwax
    Member

    what does the word “delayed” mean for the delayed coker unit?
    until to now, i was told of two different meaning:
    1. it means the coking in the heater tube is very little and coking is delayed to the coke drum
    2. it means the coke in the coke drum is not be decoked continuously, and decoking is intermittent, which means the decoking is delayed in the coke drum.
    what is the right explanation, thanks.

  • #5227

    Anonymous

    the first one

    best regards

  • #4880

    Anonymous

    I’ve heard:

    1 – As above
    2 – After heating, further processing/progress of the feed is delayed in a coke drum, until it cracks into lighter products that leave the drum, or forms coke that remains in the drum.

    1 seems more commonly mentioned, however both are mentioned and the second seems more logical.

    Since there seems little done to actually delay the coke formation (its more like: expedite it’s departure from the furnace), I think it refers to the extended time spent sitting “delayed” in the drum.

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