Condenser Drain Flash Tank (Coal Fired Power Plant)
Condenser Drain Flash Tank (Coal Fired Power Plant)
(OP)
Hi,
can somebody explain to me why we have to flash the drain before entering the condenser? why don't the drain just enter the condenser directly? I attach a part of P&ID of condenser.
Thank you.
RAS
can somebody explain to me why we have to flash the drain before entering the condenser? why don't the drain just enter the condenser directly? I attach a part of P&ID of condenser.
Thank you.
RAS





RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
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P.E. Metallurgy, Plymouth Tube
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
thanks for the answer. What damage btw? Can you explain it further?
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
So, it might be best to use a flash tank.
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
Flash tanks are simple and easy, along with non-condensable removal they also will protect other equipment.
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P.E. Metallurgy, Plymouth Tube
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
Are that the problem that going to happen if the condenser does not have a flash tank right? But are all of the drain that enter the flash tank flashed? Or some of the drain still in liquid form in the flash tank? Because I see in the P&ID there is a line that connected the flash tank and condenser hotwell.
Sorry I can not give you actual installed line description because the truth is now the plant is under construction process. Also I am a fresh grad, so might ask you a lot more questions.
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)
Draining liquid and dumping steam.
These lines can enter one of three places, above the tube bundle, somewhere along the tubes, or below tubes (but above max hotwell).
If you get a copy of the HEI Std for Steam Surface Condensers you will find a table that recommends where each or these line be placed based on where it comes from ( T and P) and the need for deaeration.
Get a current copy of the HEI, it explains a lot.
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P.E. Metallurgy, Plymouth Tube
RE: Condenser Drain Flash Tank (Coal Fired Power Plant)