Improvements in Obtaining Benzene, Toluene, and other Products from Mineral Oils and Liquid Tars.
Year: 1896

page_text: Date of Application, 24th Oct., 1896
Complete Specification Left, 23rd July, 1897-Accepted, 11th Sept., 1897
PROVISIONAL SPECIFICATION.
Improvements in Obtaining Benzene, Toluene, and other Products
from Mineral Oils and Liquid Tars.
I, JAMES MEIKLE, of 342, Gairbraid Steet, Maryhill, in the County of Glasgow,
North Britain, Technical Chemist, do hereby declare the nature of this Invention to
be as follows, that is to say
My said Invention has for its object the obtaining of benzene, toluene, and other
products from mineral oils and liquid tars of various kinds from which products of
like value have not hitherto been obtained. For example I may take an oil such
as is obtainable from coal or coal tar and after all the benzene has been separated
from it that is obtainable by ordinary processes, I can by my Invention obtain a
further quantity of benzene and toluene.
My Invention consists in operating on the oil in a retort containing coke or
other suitable carbonaceous material and maintained at about red heat, the oil
being injected into the retort by or along with a jet or jets of superheated
steam. A mixture of gases or vapors is produced and is led through piping to
a suitable condenser or condeners; and the benzene or toluene or a mixture
thereof is condensed, and thereby separated from incondensable gas, which gas
is combustible and can be used for heating or illuminating purposes being for
the latter purpose enriched if desired by means of carburetting apparatus.
Dated this Twenty-third day of October 1896.
EDMUND HUNT,
Applicant's Agent.
Improvements in Obtaining Benzene, Toluene, and other Products
from Mineral Oils and Liquid Tars.
I, JAMES MEIKLE, formerly of 342, Gairbraid Street, but now of 10, Lorne
Terrace, Maryhill, in the County of Glasgow, North Britain, Technical
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, that is to say :-
My said Invention has for its object the obtaining of benzene, toluene, and
other products from mineral oils and liquid tars of various kinds from which
products of like value have not hitherto been obtained. For example, I may
take an oil such as is obtainable from coal or coal tar, and after all the benzene
has been separated from it that is obtainable by ordinary processes, I can by
my Invention obtain a further quantity of benzene and toluene.

page_text: My Invention consists in operating on the oil in a retort containing coke or
other suitable carbonaceous material and maintained at about a bright red heat.
The carbonaceous material in the retort, may consist of coke previously formed
in other apparatus; or it may be coke produced in the retort itself from coal
in the ordinary process of making illuminating gas; or it may be carbon
deposited from oil injected into an empty but heated retort. The oil is injected
into the retort in the form of spray by means of a jet or jets of steam which
has been superheated to a temperature of 1,000 degrees, Fahrenheit,. or
higher.
Oils very suitable for the process are what are known as light creosote oils or
light tar oils as obtained by distillation from coal tar; but other mineral oils may
be used such temperature being used in each case as may be found to give good
results in practice.
A mixture of gases and vapors is produced iu the process, and is led through
piping to a suitable condenser or condensers; and the benzene or toluene or a
mixture thereof is condensed, and thereby separated from incondensable gas, which
gas is combustible and can be used for heating or illuminating purposes, being
for the latter púrpose enriched if desired by means of carburetting apparatus.
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 :-
The process for obtaining benzene, toluene and other products from mineral oils
and liquid tars, which consists in injecting such oil by or along with highly super-
heated steam into a retort maintained at a bright red heat and containing coke or
other carbonaceous material substantially as herein before described.
LATOUT CITT
EDMUND HUNT,
Applicant's Agent.