3885Re: column packing
- Dec 12, 2001
>Dont know what happened to my last post but here goes again.....
> made by hydor,
> called hyker,
> used as fiter media,
> inert ceramic cylinders,
> highly porous structure,
> offers a large surface area,
> absolutely non-toxic....
> what does everyone think???????
Your definatly on the right track, however the are a few things we
need to consider. Firstly to lower the HETP we need to increase
the 'avaliable' SA. That being the amount of surface that is 'wet'
and avaliable for vapour to interact with it.
The problem here is that the majority of the SA of this packing is
inside the pourous structure, which being so fine is not avaliable.
Think of a fine sponge, when wet it holds alot of water. Where does
the water go? Inside the pours. Once they are fill there is no way
for vapour to interact with the liquid inside unless you squeeze it
out first (try blowing through a wet sponge). Saying this I would
expect no improvments over a simalar non pourous material. Which
would have the advantage of being easily cleaned. Those pours will
trap pretty much anything you put in there.
If you want to lower your HETP (which of course we all do) I would
suggest sticking with S/S, but along the same lines as you were
thinking, I would make it finer. There is alot of SA to be gained by
using very fine S/S turnings. Heres another thought, if you increase
the diameter of your coloumb (within reason) you can pack more S/S in
whilst either increasing or retaining your current level of
fractional voids (lessen the chance of flooding). The advantage here
is that you can lower the HETP rather than adding height and another
beer crate to read the thermonitor! I know height is the easist way,
but the roof has to be considered!
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