Flare system

[orlenteam]

I would like to ask what is a typical solution and good engineering practice for K.O. drum discharging pumps for flare system I mean if one pump instead of two (A/B) can be a reliable solution? If so when it can be used, what kind of safeguards shall be added?

 

[dcasto]

You need to think about what kind of things will end up in the flare drum. A typical problem is LPG's that have a low temperature boiling point. Any pump you put in will have flashing problems. When the cold liquid hits the warm pump, instant vapor lock.

Next, using a staged pump system is a good idea. The first pump comes on when a level is detected and a second comes on when the level is even higher. Again, thinking about what can be in the drum will make a difference on the pump design because of different densities.