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RE: Tray Damage during heat-up of Fractionator

Home Forums Coking Technical Fractionation & Process Fractionation Tray Damage during heat-up of Fractionator RE: Tray Damage during heat-up of Fractionator

#7001

Claus Graf
Participant

In the extra heavy crude upgrader I worked in a few years ago we had tray damage in the coker fractionator and packing damage in the vacuum tower.
 
The emergency steam system in the vacuum heater had plugged/non working steam traps that allowed water condensate to accumulate. When the emergency steam was activated during a shutdown, water (instead of steam) entered the vacuum heater passes, creating a pressure spike that damaged the bottom packing section of the vacuum tower.
 
Regards CG

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