Improvements in the Manufacture of Flowers of Sulphur.
Year: 1898

page_text: Improvements in the Manufacture of Flowers of Sulphur.
We, RICHARD HOLDEN DAVIDSON, Alkali Manufacturer, and THE UNITED
ALKALI COMPANY LIMITED,, both of G11, Exchange Buildings, Liverpool, in the
County of Lancaster, do hereby declare the nature of this invention to be as
follows:
-
In the manufacture of flowers of sulphur by the usual methods the sulphur is
distilled into a condensing chamber, or chambers, which at the commencement of
the operation is, or are, filled with atmospheric air. The oxygen in this air has
the effect of burning the sulphur at first subliming, thus not only bringing about
a loss of sulphur, but also frequently even being the cause of slight explosions.
Further, as the result of the combustion of this sulphur, an acid atmosphere
is produced in the condensing chambers which imparts to the deposited flowers of
sulphur an acid reaction which is very objectionable for many of its uses.
The object of this invention is to remove these objections and we have found that
they may be readily overcome by avoiding the presence of atmospheric air in
apparatus constructed for the sublimation of sulphur.
According to this invention we substitute for the atmospheric air in the apparatus
at the commencement of the operation as aforesaid any inert gas as for example
nitrogen or carbonic acid, but as being more economically obtained we preferably
employ lime kiln gas. This inert gas may, if desired, be made to circulate through
the chambers by any mechanical means such as a fan or other equivalent device.
The re-placing of the atmospheric air in the subliming and depositing or condens-
ing chambers by an inert gas, such as lime kiln gas as aforesaid effectually prevents
the sulphur from burning and thus obviates loss of sulphur and at the same
time avoids explosions, while the flowers of sulphur which are being deposited are
obtained free from acidity.
2000
Improvements in the Manufacture of Flowers of Sulphur.
We, RICHARD HOLDEN DAVIDSON, Alkali Manufacturer, and THE UNITED
ALKALI COMPANY LIMITED, both of G. 11, Exchange Buildings, Liverpool, in the
County of Lancaster, do hereby declare the nature of this invention and in what

page_text: manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
In the manufacture of flowers of sulphur by the usual methods the sulphur
is distilled into a condensing chamber or condensing chambers which at the com-
mencement of the operation is or are filled with atmospheric air. The oxygen in
this air has the effect of burning the sulphur at first subliming thus not only
bringing about a loss of sulphur but also frequently being the cause of slight
explosions.
Further as the result of the combustion of this sulphur, an acid atmosphere is
produced in the condensing chamber or chambers, which acid atmosphere imparts
to the deposited flowers of sulphur an acid reaction which is very objectionable
for many of the uses to which flowers of sulphur are put.
The object of this invention is to remove these objections and we have found
that they may be readily overcome by avoiding the presence of atmospheric air
in apparatus employed in the sublimation of sulphur.
According to this invention we substitute for the atmospheric air in the
apparatus, at the commencement of the operation as aforesaid, any inert gas such
for example as nitrogen, or carbonic acid or lime kiln gas, preferably the latter
as being very economically obtainable. This inert gas may if desired be made
to circulate through the chamber, or chambers, by any suitable means such for
example as a fan or equivalent device.
The re-placing of the atmospheric air in the subliming and depositing or con-
densing chambers by lime kiln gas or other inert gas, as aforesaid, effectually
prevents the sulphur from burning and thus obviates loss of sulphur and at the
same time avoids explosions while the flowers of sulphur obtained are free from
acidity.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
-
In the manufacture of flowers of sulphur the employment in the subliming and
depositing or condensing chamber or chambers of an inert gas such as nitrogen,
or carbonic acid or lime kiln gas for the purposes hereinbefore explained.
Date 10th 1
בד
1
1000
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.