##  [Flash Drum](/flash-drum) 

  ##  [Flash Drum](https://engineering.quantumdictionary.io/flash-drum-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A vapor–liquid separator vessel in which a mixed feed undergoes a controlled pressure (and sometimes temperature) reduction so that a fraction of the liquid flashes to vapor; the drum provides residence time and internal geometry (inlet devices, disengagement space, weirs) to effect phase disengagement and collect separated vapor and liquid streams.