IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR TREATING CERTAIN GASES FOR INDUSTRIAL PURPOSES
Year: 1881

page_text: LETTERS PATENT to Frank Wirth, of the Firm of Wirth and Company,
Patent Solicitors, at Frankfort on the Main, in the Empire of Germany,
for an Invention of "IMPROVEMENTS IN THE METHOD OF AND APPARATUS
FOR TREATING CERTAIN GASES FOR INDUSTRIAL PURPOSES." A communi-
cation from Dr. Heinrich Roessler, Manager of the Firm of "Deutsch Gold-
und Silber-Scheide-Anstalt vorinals Roessler," of Frankfort on the Main, in
the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 23rd December 1881.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at
Frankfort on the Main, in the Empire of Germany. "IMPROVEMENTS IN THE
METHOD OF AND APPARATUS FOR TREATING CERTAIN GASES FOR INDUSTRIAL
PURPOSES." [A communication from Dr. Heinrich Roessler, Manager of the Firm
of "Deutsch Gold-und Silber-Scheide-Anstalt vormals Roessler," of Frankfort on
the Main, in the Empire of Germany.]
According to this Invention hot air, or a mixture of hot air with sulphurous
acid, sulphuric acid vapour, or other fumes of chemical manufactures are forced by
pressure apparatus in a finely divided condition through oxidising liquid. Such
liquid may consist of sulphuric acid, with a proportion of nitric acid or of sulphate
or chloride of copper, or sulphate of oxide of iron or other metallic salts, and by its
action sulphurous acid and air will be converted into sulphuric acid, and if copper
be present sulphate of copper will be produced. The apparatus employed consists
of a vessel containing the liquid in which is immersed a finely perforated pipe
or box connected to an injector pressure apparatus to which a branch leads a supply
of the gases to be treated, and the branch conducts steam, and from the vessel there
is an outlet for the gaseous products of the reaction.
By the use of this method and apparatus the deleterious fumes resulting from
chemical operations can be rendered innocuous, and utilised for producing useful
substances.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frank Wirth in the Great Seal Patent Office on the 19th May
1882.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at
Frankfort on the Main, in the Empire of Germany. "IMPROVEMENTS IN THE
METHOD OF AND APPARATUS FOR TREATING CERTAIN GASES FOR INDUSTRIAL
PURPOSES." A communication from Dr. Heinrich Roessler, Manager of the Firm
of "Deutsche Gold-und Silber-Scheide-Anstalt vormals Roessler," of Frankfort on
the Main, in the Empire of Germany.
According to this Invention hot air, or a mixture of hot air with sulphurous
acid, sulphuric acid vapour, or other fumes of chemical manufactures are forced by
pressure apparatus in a finely divided condition through oxidising liquid. Such
liquid may consist of sulphuric acid with a proportion of nitric acid, or of sulphate
or chloride-of-copper, or-sulphate-of-oxide-of-iron-or-other-metallic-salts, and-by-
its action sulphurous acid and air will be converted into sulphuric acid, and if
copper be present sulphate of copper will be produced. The apparatus employed
for the purpose is shown on the accompanying Drawing; it consists of a vessel a
containing the liquid, in which is immersed a finely perforated pipe or box e
connected to an injector pressure apparatus b, to which a branch c leads a supply
of the gases to be treated, and another branch & conducts steam, and from the
vessel there is an outlet f for the air and uncondensed gaseous products of the
reaction.
By the use of this method and apparatus the deleterious fumes resulting from
chemical operations can be rendered innocuous, and utilised for producing useful
substances,
Having thus described the nature of the said Invention, and in what manner
the same is to be performed, as communicated to me by my correspondent, I
claim,―
First. The herein described method of producing sulphuric acid and sulphate of
copper, and of rendering innocuous deleterious fumes by subjecting gases or fumes
containing sulphurous or sulphuric acid while hot and in a fine state of subdivision
to the action of oxidising liquids.
Second. The use for the purpose set forth in the preceding claim of combined
apparatus, constructed as herein described and shown on the accompanying
Drawing.
In witness whereof, I, the said Frank Wirth, have hereunto set my hand
and seal, this Seventeenth day of May, in the year of our Lord One
thousand eight hundred and eighty two.