A Process for the Manufacture of Soot by the Combustion of a Mixture of Gases with Hydrocarbon Vapours.
Year: 1899

page_text: Date of Application, 11th Nov., 1899-Accepted, 16th Dec., 1899
A Process for the Manufacture of Soot by the Combustion of a Mixture
of Gases with Hydrocarbon Vapours.
I, RICHARD THALWITZER, of Halle, Saxony, in the German Empire, Engineer,
do hereby declare the nature of this invention and in what mannor the same is
to be performed, to be particularly described and ascertained in and by the
following statement :·
-
Heretofore oil-gas or natural gas have been wholly employed for the manufac-
ture of soot from gus: oil-gns, as a result of the rise in price of gus oils, (such
for example as paraffin oil) is now completely excluded whilst natural gas only
yields a deficient soot product.
A substitute for oil-gas has, therefore, become necessary for the purposes of
the manufacture of soot and researches to discover a suitable substitute have
given rise to the following process wherein a gas mixture which is suitable
for the manufacture of gas soot is manufactured from vaporized hydrocarbons
(for instance such as benzine, petroleum, naphthalin, benzol, toluol, xylol.
solvent-naphtha and the like) and from atmospheric air, natural gas, illuminating
gas or by-product gases of any suitable description (such as blast-furnace gas,
gas from coke ovens, generator gases and gases of combustion).
This mixture is conveyed through pipes to the burners of the apparatus which
is designed for the manufacture of the soot and is then burnt as a mixture.
In order to prevent the re-condensation of the hydrocarbon vapours in lengthy
pipes it is necessary to heat the vessel in which the gas is mixed with the
hydrocarbon vapours and also the pipes extending from the mixing vessel to
the burner where the soot is manufactured, this being most advantageously
effected by means of steam jackets although it can be effected by hot water
or other suitable means, such as electric resistances.
The employment of the above named mixture for the manufacture of gas
soot is novel and of great importance for industrial purposes.
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. A process for the manufacture of gas root, consisting in feeding the burner.
by means of which the soot is generated, with a gas mixture formed of vaporized
hydrocarbon compounds (such as benzine, petroleum, naphthalin, benzol, toluol,
xylol, solvent-naphtha and the like) and of atmospheric air, uatural gas, illu-
minating gas, or by-product gases of any suitable kind (such as blast furnace
gas, gas from coke ovens, generator gases and non-combustible gaseous products
of combustion) in such proportions that the mixture obtained is suitable for
the manufacture of gas soot.
2. The improvement in a process of the kind described in Claim 1 in cases
where lengthy pipe connections for the gas mixture are employed, such improve-
ment consisting in bringing the mixing vessel and the connecting pipes leading
from the mixing vessel to the burner generating the soot, to a temperature

page_text: sufficient to prevent the re-condensation of the hydrocarbon compounds contained
in the gas mixture, by steam, water, electric resistances or other suitable
means.
Dated the 11th dow of Nawamba 1900
"
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.