An Improved Method of Generating Vapour from Volatile Liquids.
Year: 1886

page_text: Date of Application, 15th Sept., 1886.
Complete Lfet, 15th June, 1887.
Complete Accepted, 15th July, 1887.
PROVISIONAL SPECIFICATION.
An Improved Method of Generating Vapour from Volatile Liquids.
I, JAMES MURRIE of 45 West Nile Street, Glasgow, in the County of Lanark,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention consists in utilizing the heat extracted from exhaust steam in
generating vapour from volatile liquids such as liquid ammonia, carbonic anhydride,
or any analogous fluid the vapour tension of which is greater than the atmospheric
pressure under normal conditions of atmospheric temperature, Ether and analogous
fluids which although more volatile than water have their points of liquefaction above
atmospheric temperatures, and in consequence their vapour tensions under atmospheric
pressure, being discarded as unsuitable for economic reasons.
In vaporizing the liquid the exhaust steam, which may be steam after its
employment in the cylinders of a fluid pressure engine or steam after its employment
for heating or other purposes, is confined in an apparatus or condenser preferably
having a series of tubes arranged in the manner described in the Specification filed
under my Patent No. 9876 A.D. 1885, and through which the steam passes, or the
liquid to be vaporized may be contained in the said tubes and the exhaust steam
caused to circulate around and amongst them or any other form of vapour generating
apparatus may be employed, the steam imparting part of its heat to and volatilizing
the liquid.
The vapour so generated may be used to act direct on the piston or pistons of a
fluid pressure engine in the same manner as steam in the cylinders of a steam engine
and after having imparted motion to the pistons it is or may be passed into a
liquifying apparatus or condenser of any suitable construction which apparatus may be
exposed to the action of the atmosphere or be immersed in cold water, the temperature
of which determines the degree of back pressure on the pistons in the cylinder or

page_text: cylinders. The liquified vapour is collected in a receiving vessel provided with
pumps or injectors by which the liquid is returned to the generator to be re-vaporized.
As an aid to the generation of the vapour the tube or tubes conveying the exhaust
steam to the generating apparatus may be brought in contact with or passed through
the products. of combustion from the furnace by which the steam is generated so as to
superheat the steam before entering the vapour generating apparatus.
The exhaust steam in being used to vaporize a volatile liquid as hereinbefore
described is itself liquified under pressure, the pressure of the steam being maintained
at a higher point than the atmospheric pressure under normal conditions, and the
water of condensation is returned to the steam generator, at a temperature corre-
sponding to the said higher pressure, from the lower part of the apparatus by means
of a pump or injector.
Dated this Fourteenth day of September 1886.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.

page_text: COMPLETE SPECIFICATION.
An Improved Method of Generating Vapour from Volatile Liquids.
I, JAMES MURRIE of 45 West Nile Street, Glasgow, in the County of Lanark,
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 :--
My invention consists in utilizing the heat extracted from exhaust steam in
generating vapour from volatile liquids such as liquid ammonia, carbonic anhydride,
or any analogous fluid the vapour tension of which is greater than the atmospheric
pressure under normal conditions of atmospheric temperature, Ether and analogous
fluids which although more volatile than water have their points of liquefaction above
atmospheric temperatures, and in consequence their vapour tensions under atmospheric
pressure, being discarded as unsuitable for economic reasons.
In vaporizing the liquid the exhaust steam which may be steam after its
employment in the cylinders of a fluid pressure engine or steam after its employment
for heating or other purposes, is confined in an apparatus or condenser preferably
having a series of tubes arranged in the manner described in the Specification filed
under my Patent No. 9876 A.D. 1885, and through which the steam passes, or
the liquid to be vaporized may be contained in the said tubes and the exhaust steam
caused to circulate around and amongst them or any other form of vapour generating
apparatus may be employed, the steam imparting part of its heat to and volatilizing
the liquid.
The vapour so generated may be used to act direct on the piston or pistons of a
fluid pressure engine in the same manner as steam in the cylinders of a steam engine
and after having imparted motion to the pistons it is or may be passed into a
liquifying apparatus or condenser of any suitable construction which apparatus may be
exposed to the action of the atmosphere or be immersed in cold water, the temperature
of which determines the degree of back pressure on the pistons in the cylinder or
cylinders. The liquified vapour is collected in a receiving vessel provided with
pumps or injectors by which the liquid is returned to the generator to be re-vaporized.
As an aid to the generation of the vapour the tube or tubes conveying the exhaust
steam to the generating apparatus may be brought in contact with or passed through
the products of combustion from the furnace by which the steam is generated so as to
superheat the steam before entering the vapour generating apparatus.
The exhaust steam in being used to vaporize a volatile liquid as herein before
described is itself liquified under pressure, the pressure of the steam being maintained

page_text: at a higher point than the atmospheric pressure under normal conditions, and the
water of condensation is returned to the steam generator, at a temperature corre-
sponding to the said higher pressure from the lower part of the apparatus by means
of a pump or injector.
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 :-
:-
The herein described method of generating vapour from volatile liquids substantially
as and for the purpose set forth.