Improvements in Evaporating Apparatus for Concentrating Liquids.
Year: 1891

page_text: Date of Application, 7th May, 1891
Complete Specification Left, 16th June, 1891-Accepted, 25th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Evaporating Apparatus for Concentrating Liquids.
A communication from abroad by WIRTH & Co., of 42, Hermannstrasse, Frank-
fort-on-the-Main, in the Empire of Germany, Patent Agents.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street
Manchester both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-
This apparatus consists of a cylindrical vessel for holding the liquid which is to
be concentrated, in which a tubular heating apparatus revolves.
This heating apparatus is composed of pipes, which are fixed in two end pieces.
The compressed steam employed for the heating enters at one end into a hollow
pivot, traverses the pipes and is removed as water of condensation by a pipe at the
other end, which is always in a downward position. The rotation of the tubular
heating apparatus is effected by means of belt sheaves, and it causes an energetic
circulation of the liquid which is to be concentrated, so that, on the one hand, a
very favourable evaporating capability results considerably greater than in the case
of fixed heating surfaces, and, on the other hand, any burning of the liquid on the
heating surfaces is prevented. The steam developed from the liquid is conveyed
away from the dome of the apparatus in any suitable manner. For the more speedy
removal of the water from the heating pipes, the whole apparatus is placed
somewhat higher at one end than at the other end, so that all the water of conden-
sation formed in the pipes runs to the exit water pipe and passes out through the
same.
If steam or any other hot gas be employed for heating, the pressure of which is
so small that it would not suffice to drive out the water of condensation formed,
the exit pipe is replaced by an exhaust cup connected with one of the end
plates, which, at each revolution of the stirring apparatus, carries the accumulated
condensation water aloft with it and discharges it into the hollow pivot.
1001
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Evaporating Apparatus for Concentrating Liquids.
A communication from abroad by WIRTH & Co., of 42, Hermannstrasse, Frank-
fort-on-the-Main, in the Empire of Germany Patent Agents.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil 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 apparatus consists of a cylindrical vessel for holding the liquid which is to
be concentrated, in which a tubular heating apparatus revolves.
In the accompanying sheet of drawings:-
Figure 1 is a longitudinal section, and

page_text: Figure 2 is a sectional end elevation on the linea a of an apparatus constructed
according to this invention.
A is a cylindrical vessel containing the tubular heating apparatus, containing
pipes B, which are fixed in two end pieces C C. The compressed steam employed
for the heating enters at one end E into a trunnion D, traverses the pipes B and is
removed as water of condensation by a pipe F at the other end, which is always in
à downward position. The rotation of the tubular heating apparatus is effected by
means of belt sheaves G, and it causes an energetic circulation of the liquid which
is to be concentrated, so that, on the one hand, the capabilities of the apparatus for
evaporating are considerably greater than in the case of fixed heating surfaces,
and, on the other hand, any burning of the liquid about the heating surfaces is
prevented. The steam developed from the liquid is conveyed away from the
dome H of the apparatus in any suitable manner. For the more speedy removal
of the water from the heating pipes, the whole apparatus is placed somewhat
higher at one end D than at the other end D', so that all the water of conden-
sation formed in the pipes B runs to the exit water pipe F and passes out through
the same.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
In an evaporating apparatus for concentrating liquids, the employment of end
pieces C C having hollow trunnions D D' rotating in the lower part of a boiler or
pan A, which end pieces are connected by tubes B open at both ends and serving
as stirrers and through which on the one hand the steam which is to serve as a
means of heating is introduced, and on the other hand the condensed water
formed is run off, the whole arranged substantially as hereinbefore described and
shown.
Dated this 15th day of June 1891.
WM. P. THOMPSON & Co.,
Agents for the Applicant.