Improvements in the Manufacture of Carbonic Acid Gas.
Year: 1892

page_text: Date of Application, 20th Oct., 1892
Complete Specification Left. 20th July, 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Carbonic Acid Gas.
I HERMAN STEINEM of The Carbonic Acid Gas Company's Works, Lea
Bridge Road, Clapton, in the County of Middlesex, Manufacturing Chemist do
hereby declare the nature of this invention to be as follows:-
=
In the manufacture of carbonic acid gas by combustion it is extremely. difficult
to cleanse the same from all impurities absorbed by the potash ley solution of
carbonate of potash on its course through the scrubbers, and retained by the gas
after it has been given off by the ley during the process of boiling.
Thus CO, obtained by processes at present in use reaches the gasometer con-
taminated with nitrogen, sulphurous hydrogen = sulphuretted hydrogen and other
impurities.
According to the present invention at a suitable stage in the operation from the
gasometer the gas is then pumped by a carbonic acid gas pump at a pressure of 15
to 25 pounds into a receptacle containing chloride of calcium to absorb the moisture,
and thence into an iron cylinder containing charcoal in pieces as large as a hen's
From this cylinder it is drawn by
egg saturated with green copperas and soda.
the compressor in the usual way and liquefied, the gas pump being so constructed
that there is always an uniform pressure of 15 to 25 pounds maintained between
the same and the compressor, that is to say that the cleaning process is performed
in the chloride of calcium and charcoal cylinders at this pressure.
nand the 20th day of October 1892.
WM. BROOKES & SON,
55 & 56, Chancery Lane, Loudon, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Carbonic Acid Gas.
I, HERMAN STEINEM of The Carbonic Acid Gas Company's Works, Lea
Bridge Road, Clapton in the County of Middlesex, Manufacturing Chemist, 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:-
-
In the manufacture of carbonic acid gas by combustion it is extremely difficult
solution of
to cleanse the same from all impurities absorbed by the potash ley
carbonate of potash on its course through the scrubbers, and retained by the gas
after it has been given off by the ley during the process of boiling.
Thus CO, obtained by processes at present in use reaches the gasometer.com-
sulphuretted hydrogen and other
taminated with nitrogen, sulphurous hydrogen
impurities.
=
According to the present invention at a suitable stage in the operation from the
gasometer or other container the gas is then forced or pumped by a carbonic acid
gas pump or equivalent means at a pressure of from (say) 15 to 25 pounds into a
receptacle containing chloride of calcium to absorb the moisture, and thence into
an iron or other suitable cylinder or vessel containing charcoal (preferably) in
pieces about as large as a hen's egg saturated with green copperas and soda or
other suitable alkali. From this cylinder or vessel it is drawn (say) by the com-
pressor in the usual way and liquefied, the gas pump being so constructed that
there is always an uniform pressure of 15 to 25 pounds maintained between the

page_text: same and the compressor, that is to say that the cleaning process is performed in
the chloride of calcium and charcoal cylinders at this pressure.
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 :-
In the manufacture of carbonic acid gas.
1. The method of treating the gas under pressure in order to separate from it
the impurities absorbed, by forcing it into a vessel containing chloride of calcium
and thence into another suitable vessel containing charcoal saturated with copperas
and soda or other suitable alkali.
2. The treatment of the gas under pressure with the cleansing reagents described
substantially as set forth.
Dated the 20th day of July 1893.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.