Improved Mode of Treatment and Apparatus for the Carburation of Gases.
Year: 1894

page_text: Date of Application, 17th Sept., 1894-Accepted, 10th Nov., 1894
COME DULE SI DUIFICATION.
Improved Mode of Treatment and Apparatus for the Carburation
of Gases.
1, FRIEDRICH BREMME, Director of The Society Oberschles, Kokswerke in
Gleiwitz, Germany, 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
ad by the following statement :-
An essential disadvantage of all apparatus employed for carburating gas hitherto
proposed is that by using a carburating liquid which consists of ingredients having
different vapourizing points, the most volatile parts evaporate first and the less
volatile remain behind. The consequence is a continual decrease of evaporation
and an irregularity in the carburation takes place which is still more or less
governed at every outside change of temperature.
In order to obviate this disadvantage, the controllable quantity of carburating
liquid flowing in continually is in the present mode of treatment immediately
evaporated, so that no kind of residue of liquid can collect in the evaporator. The
quantity of the carburating liquid evaporated at a fixed time and conducted to
the gas depends then solely on the inflow. The apparatus represented in the
accompanying drawing illustrates the application of this method.
The high placed storage cistern a for the carburating liquid is constructed like a
Mariotte flask, so that the quantity flowing out is not affected by the state of level
of the liquid.
Into the tube connecting the storage cistern with the evaporator e, r, is properly
fitted a regulating valve n, and under it an inspection bulbs by which the inflow
can be ascertained and regulated, the jet of the outflowing carburating medium
being visible (Figure 1).
For the above purpose the evaporator consists of a horizontal, or of a slightly
inclined tuber (Figure 1), or of a sinuous or a coil tube (Figures 2 and 3) which
is provided with a casing, or of a vessel with a double bottom (Figure 4), and
heated in some way or other. The carburating liquid enters at the end of the
tube, or in the upper part of the double bottomed vessel, and leaves at the other
end e as vapour which thence is conducted by the shortest way to the gas to be
carburated.
The volatilization can be effected by steam heat, or any other calorific ;
especially suitable for this purpose are the spent gases from explosion motors, or
the water used for cooling.
The automatic regulating of evaporators so much tried hitherto in many
carburating apparatus does not answer its purpose with regard to the quantity of
vapour passing through besides the requisite quantity of the carburating medium
for obtaining a certain definite degree of lighting power (or heating value) is
dependent on the very fluctuating original lighting power (or heating value) of the
gas that is not yet carburated, consequently there remains the necessity of
regulating the inflow of the carburating medium.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The herein before described process of carburation distinguished in this, that
the controlled quantity of the inflowing carburating liquid is immediately
evaporated in an evaporator in such a manner that no liquid residue can collect
there.

page_text: 2. In the application of the process indicated in 1, the use of an evaporator which
consists of a straight tube (Figure 1), or in a sinuous_tube (Figures 2 and 3)
enclosed in a casing, or in a vessel with a double bottom (Figure 4) for the purpose
set forth.
3. In the application of the process indicated in 1, the connection of the
evaporator described in 2 with a storage cistern constructed like a Mariotte flask
for the carburating liquid for the purpose of maintaining an uniform flow of liquid
to the vapourizing vessel.
1004
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Friedrich Bremme.