AN IMPROVED PROCESS AND APPARATUS FOR THE CONTINUOUS PRODUCTION OF CARBONIC ACID to be as follows
Year: 1884

page_text: TRUYISIONAL
DEEVIERVATIVA,
I, EMIL CAPITAINE of 89 Chancery Lane, in the County of Middlesex, Engineer,
do hereby declare the nature of the said invention for "AN IMPROVED PROCESS
AND APPARATUS FOR THE CONTINUOUS PRODUCTION OF CARBONIC ACID to be
as follows:-
"
This improved process comprises the production of carbonic acid free from air, as
the main product, and of carbonic acid mixed with air as a bye product.
The material employed for the production of the carbonic acid is bi-carbonate of
soda or bi-carbonate of potash.
In order to obtain from the said material a part liquid and part gaseous carbonic
acid the inventor has constructed an apparatus such as is represented in the
accompanying drawing.
Five vessels arranged one above another serve for the reception of the bi-carbonate
of soda or potash, the uppermost vessel a being charged with the material and the
lower ones d, and c, serving for heating the same and for the evolution of the
carbonic acid.
The vessels a, and d, are each provided with a dome for carrying off the carbonic
acid, further, a hopper h is fitted to the vessel a, for the continuous reception of the
carbonic acid producing material; it reaches to nearly the bottom of the vessel;
and is kept constantly full,
By the shovelling action of the stirring mechanism within the vessel, the material
is carried gradually through the connecting pipe f to the vessel b and thence to the
vessels c, d, and e. The bottom vessels d and e, are either heated by fire, or as
shewn in the drawing, they are jacketted so as to be heated by steam.
In the vessels d, and e, the carbonic acid gas is driven off and escapes partly
through the pipe i, and partly through the other vessels c, b, and a, through the
pipe whilst the simple carbonate of soda becomes packed in the recess & which is
always maintained full.
The apparatus works continuously.-To condense or render liquid, carbonic acid,
it is necessary that it shall be free from air; in the two vessels d, and e, of the

page_text: apparatus, the carbonic acid is absolutely free from air, whilst in the vessels a, b, c,
the carbonic acid is partly mixed with air. This air has reached the interior of the
vessel with the bi-carbonate through the hopper h.
The carbonic acid driven off is cooled by the cooling vessels m, whereupon the
water derived from the bi-carbonate is again condensed; it collects in the container n,
and runs through the pipe o. The carbonic acid now reaches the so-called purifying
vessels p, and g, these vessels are filled with pumice stone or other suitable substance,
sulphuric acid running continuously by the piper and a concentrated solution of
chloride of calcium continuously by the pipe a through the vessels; then the
carbonic acid passes through the pipe t into the gasometers u and v; these lattor
being also supplied with a concentrated solution of chloride of calcium instead of
with water. The carbonic acid in the gasometer u is utilised for the manufacture
of other carbonic preparations in which air is not injurious; on the other hand the
carbonic acid in is condensed into liquid, or partly liquid, and partly gaseous
carbonic acid by means of compression pumps operated in the ordinary way.
1

page_text: עעעVU
BREVIFICATION.
I, EMIL CAPITAINE of 89 Chancery Lane in the County of Middlesex, Civil
Engineer, do hereby declare the nature of the said invention for "AN IMPROVED
PROCESS AND APPARATUS FOR THE CONTINUOUS PRODUCTION OF CARBONIO
ACID," a communication to me from abroad by Herrmann Herbertz of Barmen in
the German Empire, Chemist, and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement:-
This improved process comprises the production of carbonic acid free from air as
the main product and of carbonic acid mixed with air as a bye product.
The material employed for the production of the carbonic acid is bi-carbonate of
soda or bi-carbonate of potash.
Referring to the accompanying sheet of illustrativo drawings:-
Five vessels arranged one above another serve for the reception of the bi-carbonate
of soda or bi-carbonate of potash, the uppermost vessel a being charged with the
material and tho lower ones d and e serving for heating the same and for the
evolution of the carbonic acid. These five vessels are provided with stirring
apparatus.
The vessels a and d are each provided with a dome for carrying off the carbonic
acid, further a hopper h is provided on the vessel a for the continuous reception of
the carbonic acid material; it reaches to nearly the bottom of the vessel and is kept
constantly full,
By the shovelling action of the stirring mechanism, the pulverised material is
carried gradually through the connecting pipe f to the vessel 6 and thence passes to
the vessels c, d, and e. The bottom vessels 'd and c are either heated by fire, or as
shewn in the drawing they are jacketted so as to be heated by steam. In the
vessels d and e the carbonic acid is driven off and escapes partly through the pipe i,
and partly through the other vessels c, b, and a, and through the pipe k whilst the
simple carbonato of soda becomes packed in the recess which is formed in the
bottom of the vessel e.
The apparatus works continuously. To condense or render liquid carbonic acid
it is necessary that it shall be free from air. In the two vessels d and e of the
apparatus, the carbonic acid is absolutely free from air whilst in the vessels a ba
the carbonic acid is partly mixed with air. This air has reached the interior of the
vessel with the bi-carbonato through the hopper h.
The carbonic acid driven off is cooled by the cooling vessels m, whereupon the
water derived from the bi-carbonate is again condensed; it collects in the container n
and runs through the pipe o. The carbonic acid now reaches the so-called purifying
vessels p and q which are filled with pumice stone or other suitable substance
sulphuric acid running continuously by the piper and a concentrated solution of
chloride of calcium by the pipes through the vessels, then the carbonic acid passes
through the pipet into the gasometers u and these latter being also supplied with
a concentrated solution of chloride of calcium. In the gasometer u is carbonic acid
mixed with air and in the gasometer v is carbonic acid free from air.

page_text: Having now particularly described and ascertained the nature of said invention
and in what manner the same is to be performed I declare that what I claim is
1. The process for the production of carbonic acid free from air from bi-carbonate
of soda or bi-carbonate of potash substantially as hereinabove set forth and
illustrated in the accompanying drawing.
2. The combination of the vessels a, b, c, d, e of the cooling vessels m m,
and of the purifying vessels p, q substantially as set forth and illustrated in the
accompanying drawing and for the purpose specified.
3 The apparatus for the continuous production of carbonic acid, substantially as
hereinabove described and illustrated in the accompanying drawing.