17130Re: New file uploaded to new_distillers
- Aug 26, 2005I'd argue that there is a wier just below the up/down
arrow representing liquid spill-over. You are
correct, there are no downcomers. Are downcomers
necesarry though? The last facility I worked in with
distillation columns used vertically oriented
structured packing, and it's my understanding that
columns looking like this are very rare. I'd think
that in a well designed column the liquid spill-over
could provide enough resistance to the gas flowing
through it if the space between the wier and the
column wall was sufficiently narrow.
>There are no downcomers, and no wiers. Without wiersthere can be
>little to no liquid holdup on the plate. Withoutdowncomers, the
>rising vapours will find the line of least resistancei.e. around
>the endgap of the plates, all the way up, not throughthe bubblers.
>Compare with this drawing...__________________________________________________
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