Steam Generation from Tower Condenser
Steam Generation from Tower Condenser
(OP)
South Africa is in an energy crisis. I want to generate 4barg steam from some tower condensers that are currently using fin-fans. The equipment will go on a structure between the tower and the finfan bay. Process side will drain to the existing reflux drum.
Can anyone give me some advice the exchanger design? I would like to get recommendations on the exchanger type and layout- horizontal orientation would be best, but any proven design will be useful.
best wishes,
sshep
Can anyone give me some advice the exchanger design? I would like to get recommendations on the exchanger type and layout- horizontal orientation would be best, but any proven design will be useful.
best wishes,
sshep





RE: Steam Generation from Tower Condenser
Cheers,
gr2vessels
RE: Steam Generation from Tower Condenser
I don't know what you are condensing, but have a think about the control scheme. You might want to keep your aircoolers if outlet temperature is to be controlled.
RE: Steam Generation from Tower Condenser
As to exchanger type, I would go for a kettle design with water in the shell side...you might control the level in shell to control the condensing duty.
RE: Steam Generation from Tower Condenser
My calculations show that I will need about 250sqm of heat transfer area using a condensing temperature on the process side of 175C. We will be keeping the fin-fan and just put an excahner upstream and in series. We have plenty of 4 barg users as another part of the process boils C5's and C6's.
Thanks again,
sshep
RE: Steam Generation from Tower Condenser
Currently we are struggling with one that intermittently carries over slugs of water.
I think the key is to design it correctly so you have enough disengaging space and the appropriate internals.
RE: Steam Generation from Tower Condenser
see attached
RE: Steam Generation from Tower Condenser
@SShep: Regarding a vertical thermosyphon, i refer back to my previous post: have a look at the required control scheme. I don't see how to get it working. I suppose you have see them working as a reboiler underneath a column, not as a condenser.
I can assure you that there are a lot of plants with a kettle type 'waste heat boiler'. Chosing a kettle type instead of a thermosyphon makes the control scheme easier as well.
RE: Steam Generation from Tower Condenser
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