Boiling Point, and of Reconcentrating the Solution Employed.
Year: 1885

page_text: Boiling Point, and of Reconcentrating the Solution Employed.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for A PROCESS OF
PRODUCING STEAM AT HIGH PRESSURE BY MEANS OF STEAM AT A LOWER PRESSURE
AND SOLUTIONS HAVING A HIGH BOILING POINT, AND OF RECONCENTRATING THE
SOLUTION: EMPLOYED, a communication to me from abroad by Moritz Honigmann
of Grevenberg near Aachen in the Empire of Germany, Soda Manufacturer,
through his Agents Wirth and Company of Frankfort on the Main, Germany, to be
as follows:-
This invention relates to the production of steam at a high pressure from steam
at a much lower pressure. This is effected in the manner and by the agency of
the means hereafter described.
Reference is to be had to the accompanying drawing which represents an
example of an apparatus suitable for the purpose.
A vessel N containing soda or potash lye or other solution having a high boiling
point and a vessel W provided with circulating tubes S are so arranged the one
within or in relation to the other, that heat can be quickly transferred from the
one to the other and the differences of temperature between the two liquids quickly
equalized, the two vessels being respectively constructed to sustain the primitive
and increased pressures. Steam under pressure is conveyed by a perforated pipe L'
into the soda lye, of which the temperature becomes in consequence quickly raised.
If for instance the boiling point of the soda lye (under atmospheric pressure) is
150° Cels and the temperature of the original steam is 160° Cels (which corresponds
to a pressure of 5 atmospheres) the temperature of the soda lye will in consequence
of the absorption of the steam be raised to 160 + 50° = 210° Cels, whilst the
pressure in the soda vessel N is raised to 5 atmospheres. The temperature in the
water vessel W is consequently raised to about 210° Cels whereby steam will be
generated and raised to a pressure of from 15 to 20 atmospheres Thenceforth for
every quantity of steam under a pressure of 5 atmospheres which is blown into
[Price 8d.1

page_text: the soda lye an equal quantity of steam under a pressure of 15 to 20 atmospheres
may be obtained from the water vessel. In consequence of the absorptions of
steam the boiling point of the soda lye becomes gradually lowered and pressure in
the water vessel becomes correspondingly decreased and when the solution is so far
diluted as to be no longer available the soda lye can be reconcentrated by means of
the steam under pressure.
This is effected in the following way.
The valves V3 and V₁ are closed and V is opened to allow the pressure in the
soda vessel to escape to the atmosphere. Steam under a pressure of 5 atmospheres,
or at a temperature of 160° Cels, is then blown into the water vessel W where it
becomes absorbed and the diluted soda lye is evaporated as the temperatures
become equalized.
The concentration of the soda lye continues until its boiling point corresponds to
the temperature of the steam used which in the example is 160° Cels.
For constant work two similar apparatus are used which alternately raise the
-steam pressure and concentrate the lye. The increase of steam pressure which can
be obtained with this apparatus will be seen from the following table.
This apparatus can be used for various purposes. For steam engines it.allows of
the use of smaller steam pipes and smaller engines with a greater expansion.
This apparatus resembles the soda steam boiler but whilst in the latter the
exhaust from the engine is returned to the boiler thereby constituting a fireless
working of the engine the present invention only aims to produce steam at a high
pressure from steam already under pressure. It is to be observed that the working
of this apparatus and the obtaining of the greatest pressure of steam are without
any danger as the difference of the temperature between the soda and the water
cannot exceed 4° Cels. The boiler requires no cleaning as the stream which enters
carries no lime with it.
Soda and potash are the most suitable for the purposes of this process as they
have very high boiling points and are cheap and durable.
Copper resists perfectly the highest concentration of the soda lye and this metal
being a good conductor of heat is very suitable.

page_text: A Process of Producing Steam at High Pressure by Means of
Steam at a Lower Pressure and Solutions having a High
Boiling Point, and of Reconcentrating the Solution Employed.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of
Patent Agents, do hereby declare the nature of this Invention (a communication
to me from abroad by Moritz Honigmann of Grevenberg near Aachen in the
Empire of Germany, Soda Manufacturer, through his Agents, Wirth and Company
of Frankfort on the Main, Germany) 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 the production of steam at a high pressure, from steam
at a much lower pressure. This is effected in the manner and by the agency of
the means hereafter described.
Reference is to be had to the accompanying drawing which represents an
example of an apparatus suitable for the purpose.
A vessel N containing soda or potash lye, or other solution having a high
boiling point and a vessel W provided with circulating tubes S are so arranged, the
one within or in relation to the other, that heat can be quickly transferred from
the one to the other, and the differences of temperature between the two liquids
quickly equalize, the two vessels being respectively constructed to sustain the
primitive and increased pressures. Steam under pressure is conveyed by a
perforated pipe. L' into the soda lye, of which the temperature becomes in con-
sequence quickly raised. If for instance the boiling point of the soda lye (under
atmospheric pressure) is 150° Cels. and the temperature of the original steam is
160° Cels (which corresponds to a pressure of 5 atmospheres) the temperature of
the soda lye will in consequence of the absorption of the steam be raised to
160 + 50° 210° Cels. whilst the pressure in the soda vessel N is raised to
5 atmospheres. The temperature in the water vessel W is consequently raised
to about 210° Cels. whereby steam will be generated and raised to a pressure of
from 15 to 20 atmospheres. Thenceforth for every quantity of steam under a
pressure of 5 atmospheres which is blown into the soda-lye an equal quantity of
steam under a pressure of 15 to 20 atmospheres may be obtained from the water
vessel. In consequence of the absorptions of steam; the boiling point of the soda
lye becomes gradually lowered and pressure in the water vessel becomes corre-
spondingly decreased and when the solution is so far diluted as to be no longer
available, the soda lye can be reconcentrated by means of the steam under
pressure.
===
This is effected in the following way.
The valves V and V₁ are closed and V₁ is opened to allow the pressure in
the soda vessel to escape to the atmosphere at L. Steam under a pressure of

page_text: 5 atmospheres, or at a temperature of 160° Cels. is then blown into the water
vessel W. through pipe L' by opening valve V2, where it becomes absorbed and the
diluted soda lye is evaporated as the temperatures become equalized.
The concentration of the soda lye continues until its boiling point corresponds to
the temperature of the steam used which in the example is 160° Cels.
For constant work two similar apparatus are used which alternately raise the
steam pressure and concentrate the lye. The increase of steam pressure which can
be obtained with this apparatus will be seen from the following table.
This apparatus can be used for various purposes. For steam engines it allows of
the use of smaller steam pipes and smaller engines with a greater expansion.
This apparatus resembles the soda steam boiler, but whilst in the latter the
exhaust from the engine is returned to the boiler, thereby constituting a fireless
working of the engine, the present invention, only aims to produce steam at a high
pressure from stean already under pressure.
It is to be observed that the working of this apparatus and the obtaining of the
greatest pressure of steam are without any danger as the difference of the
temperature between the soda and the water cannot exceed 4° Cels. The boiler
requires no cleaning as the stream which enters carries no line with it.
Soda and potash are the most suitable for the purposes of this process as they
have very high boiling points and are cheap and durable.
Copper resists perfectly the highest concentration of the soda lye and this metal
being a good conductor of heat is very suitable.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is :-
1. The production of steam at a high pressure, by blowing steam at a much
lower pressure into soda or potash lye (or any other solution having a high boiling
point) in a closed vessel, and applying the heat developed by the absorption of the
said steam to heat water in a water vessel, substantially in the manner herein
specified.
2. The process of re-concentrating diluted solutions having a high boiling point
by blowing steam under pressure into the water vessel of the same apparatus, such
as herein described, used for obtaining an increased steam pressure.

page_text: 3. The process of continuous production of steam at a high pressure from steam
at a much lower pressure by the combined and simultaneous employment of two
similar apparatus, such as herein described acting alternately, the one to produce
steam under high pressure by blowing steam at a lower pressure into soda or potash
lye and the other to re-concentrate the diluted lye by blowing steam under pressure
into the water vessel, substantially as herein specified.