Steam Desuperheater Sizing
Steam Desuperheater Sizing
(OP)
Please inform me of a method to determine the diameter and height of a steam desuperheater vessel.
Superheated steam will be injected into the vessel in a sparger and mixed with cooling water injected into the bottom of the vessel.





RE: Steam Desuperheater Sizing
Sparging superheated steam in water can rattle the vessel and piping quite a bit. You would be better off misting water at the top of a steam filled vessel, if you really cannot use a purpose built desuperheater.
Desuperheating is deceptively simple in principle but making it work properly can be a real headache.
Pls. provide a few specifics on your application Press. Temp. steam flow, water temp. It may help me or others help you.
RE: Steam Desuperheater Sizing
Here are some parameters:
Superheated steam: 600 degF, 150 psig, 14,000 lb/hr
Saturated Steam: 150 psig
Looking for a method, calculation, or basis for the vessel dimensions.
RE: Steam Desuperheater Sizing
What is the required turndown?
How much superheat can you tolerate?
Where will the water come from?
RE: Steam Desuperheater Sizing
max superheat = 2 degF
Water is condensate @ 150 deg.
RE: Steam Desuperheater Sizing
Why do you want to go for a vessel? You will have an extra steam flow rate of 1680lb/hr (or 12% of original flowrate). Just check whether your existing piping can take care of this.
RE: Steam Desuperheater Sizing
I beleive Samson and Gestro are two such manufacturers. just google them. They are in Germany but you can probably find something closer to home, wherever that is.
good luck