Re: Re: Practical distillation
Marbles are put into the tower of a reflux column, their purpose is to slow
the passage of the alcohol as it rises up the column. The greater the surface
area of the marbles have the better they seem to work as they transfer heat
from the vapour, cooling the vapour below the boiling point of water but still
above the boiling point of alcohol incidentally the vapour point of alcohol is
78 - 78.5 C, the water turns into a liquid and falls back into the pot and the
alcohol continues on and out through the condenser where it to is turned back
into a liquid so it can be collected.
> What do glass marbles do?
> -----Original Message-----
> From: Ray Toms [mailto:ray@...]
> Sent: Thursday, November 11, 1999 6:59 PM
> To: Distillers@onelist.com
> Subject: [Distillers] Re: Practical distillation
> From: Ray Toms <ray@...>
> In New Zealand we usually use glass marbles the best type are those sold
> by garden shops for putting into pot plants, however the Rashig rings
> are purported to be the best thing for this purpose.
> > A question from me, has anyone found a suitable alternative to
> > Rashig rings for use in a reflux still tower ?? I've heard of broken car
> > windscreen bits being used & Gingery uses glass marbles, any other
> > suggestions ??
> > --
> > Dick