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Low flow

Home Forums Coking Technical Heaters & Furnaces Low flow

This topic contains 1 reply, has 2 voices, and was last updated by  Alfredo Velasco 15 years, 12 months ago.

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  • #4368

    Christy Bohannon
    Participant

    What systems are set up to take care of a low flow situation? I assume for most people the fuel gas trips and the emergency steam enters. Is there any other part of a low flow shutdown? What do you do to prevent putting cold feed to the drum? Do you do anything different if it is a situation where you expect feed back almost immediately such as a charge pump cavitation?

  • #7845

    Alfredo Velasco
    Participant

    Important question:

    Some of them are:

    1. Fuel gas trip, and Velocity Steam
    It is known that emergency steam means the steam injected into the radiant box in case of a fire or explosive atmosphere.

    2. It is recommended to have one flow control valve per flow pass in coker heaters, just to keep the bulk temperature of all passes to a similar value. It is called “COIL BALANCE”. Of course, flow, pressure and temperature are key variables.

    3. Increment the velocity steam if a problem of low flow occurs.

    Hope this help

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