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Reply To: Vaporization of Drum when by-passing the unit

Home Forums Coking Vaporization of Drum when by-passing the unit Reply To: Vaporization of Drum when by-passing the unit

#26922

Mike Kimbrell
Participant

Using an inert gas to remove the hydrocarbons from the coke drum to make it safe from an explosive mixture standpoint, a purge volume of 3 times the drum volume will get the hydrocarbon concentration down to 1% of what it was when the purge was started assuming perfect mixing. A purge volume of 4 to 5 times the drum volume should be adequate to account for any incomplete mixing an make the drum safe to vent to the atmosphere.

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