'▲ METHOD OF SOLIDIFYING LIQUID ACIDS
Year: 1883

page_text: LETTERS PATENT to Carl Pieper, Civil-Engineer and Patent Agent, resident
at 109-110 Gneisenaustrasse, Berlin, S.W. Prussia for an Invention of
"
"
'▲ METHOD OF SOLIDIFYING LIQUID ACIDS a communication to him from the
firm of Vorster und Grüneberg at Kalk near Cologne on the Rhine, Prussia,
German Empire
PROVISIONAL SPECIFICATION left by the said Carl Pieper at the Office
of the Commissioners of Patents on the 12th October 1883.
.
a com-
CARL PIEPER, Civil Engineer and Patent Agent, resident at 109/110 Gneisenau-
strasse, Berlin S.W., Prussia, A METHOD OF SOLIDIFYING LIQUID ACIDS,"
munication to me from the firm of Vorster und Grüneberg at Kalk near Cologne
on the Rhine, Prussia, German Empire.
This invention has for its object a method of solidifying liquid acids, such for
instance, as sulphuric acid, nitric acid, muriatic acid, &c., and it consists in
intimately mixing such acid with finely divided solid materials which are not
affected by the same so as to form therewith a kind of powder or a thick paste.
As solidifying material the inventor prefer to employ fossil meal (Kieselgubr),
comminuted silica, asbestos and the like substances.
When, for instance, fossil meal is allowed to absorb, according to this method,
three times its weight of sulphuric acid of 66° B°, it will form a powdery mass,
and when mixed with the fourfold of its weight of said acid, a thick paste will
result. Both, the powder and the paste may be packed into iron barrels provided
with lead lining or not.
The acid solidified in the manner aforesaid may be used either directly, as for
refining petroleum, or purifying illuminating gas from ammonia, or in the
manufacture of artificial mineral water or of nitroglycerin, &c.; or diluted liquid
acid is extracted therefrom by a methodical lixiviation with water.
The remaining fossil meal, &c., may be re-utilized for the same or another
purpose such as the manufacture of dynamite.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Carl Pieper in the Patent Office on the 4th April 1884.
"
CARL PIEPER, Civil Engineer and Patent Agent resident at 109/110 Gneisenau-
strasse Berlin S.W. Prussia, A " METHOD OF SOLIDIFYING LIQUID ACIDS," a
communication to me from the firm of Vorster und Grüneberg at Kalk near
Cologne on the Rhine, Prussia, German Empire,
This Invention has for its object a method of solidifying liquid acids such for
instance as sulphuric acid, nitric acid, muriatic acid, &c, and it consists in
intimately mixing such acid with finely divided solid materials which are not
affected by the same, so as to form therewith a kind of powder or a thick paste.
As solidifying material the inventors prefer to employ fossil meal (Kieselguhr),
comminuted silica, asbestos and the like substances.
When for instance, fossil meal is allowed to absorb, according to this method,
three times its weight of sulphuric acid of 66° B°, it will form a powdery mass,
and when mixed with the fourfold of its weight of said acid, a thick paste will
result.
The material obtained in this manner does not act corrosively upon iron, and
can therefore be kept in iron vessels, which may, however, be lined with lead, if
preferred. The invention thus furnishes the means for facilitating the storage
and the transport of acids, and of avoiding the danger othervise [sic] connected
therewith.
The acid solidified in the aforesaid manner may be used either directly as for
refining petroleum, or purifying illuminating gas from ammonia, or in the
manufacture of artificial mineral water, or of nitroglycerine, &c., or diluted liquid
acid is extracted therefrom by a methodical lixiviation with water. In the latter
case for instance, a liquid sulphuric acid of from 50 to 60° B can be obtained
from an acid-powder or-paste made with sulphuric acid of 66° B°.
The remaining fossil meal, &c., may be reutilized for the same or for another
purpose such as the manufacture of dynamite."
Having thus described the nature and object of this invention and the manner
in which it is to be carried out in practice, as communicated to me by my
correspondents, I hereby claim
The method of solidifying liquid acids consisting in intimately mixing saids
acids with finely divided solid materials which are not affected by the same so as
to form therewith a powdery mass or a thick paste, as and for the purpose
stated.
In Witness whereof I the said Carl Pieper have hereunto set my hand and
seal this thirty-first day of March in the year of our Lord One thousand eight
hundred and eighty-four.