Improvements connected with the Concentration or Distillation of Glycerine."
Year: 1897

page_text: "Improvements connected with the Concentration or Distillation
of Glycerine."
I, ERNEST GEORGE SCOTT, of 67, Lord Street, Liverpool, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements connected with the concentration or
distillation of glycerine.
'
It has been found in practice that in concentrating or distilling glycerine a
quantity of glycerine is volatilized and carried away with the steam thus giving rise
to waste.
Now it is the object of this invention to obviate this disadvantage in the concen-
tration of glycerine by the means at present employed and to this end I employ in
conjunction with the ordinary concentrating or distilling apparatus a condenser into
which the steam coming from the concentrating apparatus is led, the said condenser
having its cooling surface so proportioned that only a fraction of the steam is
condensed. By this means it will be obvious that the glycerine which has been
volatilized in the concentrating or distilling apparatus and carried with the steam
into the condenser will be retained in the water of condensation in the condenser,
whereby the loss usually attending the process of distillation and concentration of
glycerine is avoided.
"Improvements connected with the Concentration or Distillation
of Glycerine."
1, ERNEST GEORGE SCOTT, of 67, Lord Street, Liverpool, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the following
statement:
This invention relates to improvements connected with the concentration or

page_text: It has been found in practice that in concentrating glycerine a quantity of
glycerine is carried away with the steam; and also that in distilling glycerine in a
current of steam, after the bulk of the glycerine has been condensed by means of
air cooling in the well known way, the steam which passes on contains a considerable
proportion of glycerine, thus giving rise to waste.
The object of this invention is to obviate this waste in the concentration or
distillation of glycerine by the present methods, and to this end I employ in con-
junction with the ordinary concentrating or distilling apparatus a tubular water
condenser into which the steam coming from the concentrating or distilling
apparatus is led, the said condenser having its cooling surface so proportioned that
whilst on the one hand the glycerine is condensed on the other hand only a fraction
of the steam is condensed the main portion of the steam passing on to the usual
condenser. By this means it will be obvious that the glycerine which has been
carried over from the concentrating or distilling apparatus will be retained admixed
with only-a-relatively small quantity of water so that it can be recovered, whereby
the loss usually attending the process of distillation and concentration of glycerine
is avoided.
To enable my invention to be fully understood I will describe the same by reference
to the accompanying drawing, which illustrates in elevation an arrangement of
condensers in accordance with my invention..
65
a is the special tubular water condenser which I make use of and which I term
a fractional condenser" and b is the ordinary condenser into which the steam passes
after having passed through the fractional condenser a. c is the inlet for the steam
issuing from the concentrating vessel or from the air coolers of the distillation plaut
and d is the connection between the two condensers for allowing the steam to flow
from one to the other. As herein before stated the cooling surface in the condenser
is so proportioned that whilst the glycerine vapour, which condenses much more
readily than water vapour or steam, is condensed, the steam passes on through the
connection d to the ordinary condenser where it is condensed in the usual manner.
e is a vessel connected by the pipe f (containing a cock g) with the fractional
condenser a at the bottom and serving for drawing off from time to time during the
working of the apparatus the condensed glycerine and water from the said fractional
condenser.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The improvement in the concentration or distillation of glycerine consisting
in subjecting the steam issuing from the concentrating vessel or the air coolers of the
distillation plant to a slight condensing action prior to its passing into the usual
condenser, substantially as described.
2. The combination with apparatus for concentrating or distilling glycerine, of a
tubular water condenser having a relatively small area of cooling surface as compared
with the quantity of vapour passed through it, substantially as, and for the purpose,
described.
3. The arrangement in connection with apparatus for concentrating or distilling
glycerine of a fractional condenser substantially in the manner hereinbefore described
and illustrated in the accompanying drawing.
G. F. REDFERN & Co.
4, South Street, Finsbury, London. Agents for the Applicant.