IMPROVEMENTS IN THE MANUFACTURE OF CHLORIDE OF LIME
Year: 1880

page_text: LETTERS PATENT to Ernest Solvay, of Brussels, in the Kingdom of Belgium,
Manufacturer, for an Invention of "IMPROVEMENTS IN THE MANUFACTURE
OF CHLORIDE OF LIME."
PROVISIONAL SPECIFICATION left by the said Ernest Solvay at the Office
of the Commissioners of Patents on the 25th February 1880.
ERNEST SOLVAY, of Brussels, in the Kingdom of Belgium, Manufacturer.
"IMPROVEMENTS IN THE MANUFACTURE OF CHLORIDE OF LIME."
Considerable difficulty is experienced in causing lime to absorb chlorine, especially
diluted chlorine, such as is obtained in the processes which yield chlorine mixed
with air and nitrogen.
Many apparatus have been proposed with a view of converting as easily as
possible lime into chloride of lime.
I have invented the following process:-
The lime is slaked by means of a suitable quantity of water so as to form a
mortar of sufficient consistency. This mortar is then divided into small fragments
or, by preference, is converted into little balls by means of special machinery, and
it is then dried at the requisite temperature to drive out all the water exceeding
the quantity necessary to form hydrate of lime.
This may be effected by mechanical means.
I then place these fragments of hydrate of lime loosely in an upright cylinder,
or in several reservoirs arranged systematically, and into the said cylinder or
reservoirs I introduce gaseous chlorine so that it shall always come first in contact
with that portion of the material which has already been subjected for some time
to the action of the chlorine, and shall finally pass on to the material which has
been freshly charged into the cylinder, or into the systematically arranged
reservoirs.
By this means I obtain chloride of lime in fragments or balls, and the chlorine
is absorbed completely, if the operation be carried on in apparatus sufficiently
capacious in width and height, or in a sufficient number of apparatus.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Ernest Solvay in the Great Seal Patent Office on the 11th August
1880.
ERNEST SOLVAY, of Brussels, in the Kingdom of Belgium, Manufacturer.
"IMPROVEMENTS IN THE MANUFACTURE OF CHLORIDE OF LIME."
Considerable difficulty is experienced in causing lime to absorb chlorine, especially
diluted chlorine, such as is obtained in the processes which yield chlorine mixed
with air and nitrogen.
Many apparatus have been proposed with a view of converting as casily as
possible line into chloride of lime. I have invented the following process:-
The lime is slaked by means of a suitable quantity of water, so as to form a
mortar of sufficient consistency. This mortar is then divided into small fragments
or, by preference, is converted into little balls by means of special machinery, and
it is then dried at the requisite temperature to drive out all the water exceeding
the quantity necessary to form hydrate of lime.
This may be effected by mechanical means.
I then place these fragments of bydrate of lime loosely in an upright cylinder or
tower, or in several reservoirs arranged systematically, and into the said cylinder
or tower or reservoirs I introduce gaseous chlorine so that it shall always come
first in contact with that portion of the material which has already been subjected
for some time to the action of the chlorine, and shall finally pass on to the material
which has been freshly charged into the cylinder or tower, or into the systematically
arranged reservoirs.
By this means I obtain chloride of lime in fragments or balls, and the chlorine
is absorbed completely, if the operation be carried on in apparatus sufficiently
capacious in width and height, or in a sufficient number of apparatus.
Having now described the nature of my said Invention, and the manner in
which the same is to be performed, I claim as my said Invention,―
The application in the manufacture of chloride of lime of hydrate of lime, in
the form of small fragments or agglomerated morsels for the absorption of the
chlorine.
In witness whereof, I, the said Ernest Solvay, have hereunto set my hand
and seal, this Seventh day of August, in the year of our Lord One thousand
ERNEST SOLVAY. (L.S.)