IMPROVEMENTS IN APPARATUS FOR THE CONCENTRATION OF SULPHURIC ACID OR FOR ANALOGOUS PURPOSES
Year: 1884

page_text: We THOMAS WILSON BASSETT MUMFORD Manager to Mess" James Gibbs and
Company of Victoria Docks in the County of Essex Chemical Manufacturers and
ROBERT MOODIE Engineer to the said Firm do hereby declare the nature of
said Invention for "IMPROVEMENTS IN APPARATUS FOR THE CONCENTRATION OF
SULPHURIC ACID OR FOR ANALOGOUS PURPOSES," to be as follows:-
Our Invention has for its principal object to effect the concentration of Sulphuric
Acid in a more ready and economical manner than hitherto and with less liability
of injury to the preliminary evaporating pans employed-According to our
Invention the hot gases are after leaving the furnaces for heating the Platinum
Vessels preferably passed into a gas or combustion Chamber in order that they
may become mixed and more perfectly ignited, the leaden or equivalent pans
through which the acid is passed on its way to the platinum or final concentration
vessels being arranged upon a flue or passage through which the products of
combustion from the furnaces and gas Chamber hereinbefore mentioned pass on
their way to the Chimney. This flue or passage is made of a considerably larger
capacity or greater depth at the end nearest the said furnaces than at the end
nearest the outlet to the Chimney and constructed with a curtain or firebridge
beneath which the gases are compelled to pass so as to enter the flue at its lowest
point in order that they may expand and be more evenly diffused before impinging
on the plates supporting the evaporating pans, and is preferably divided longi-
tudinally by a partition or partitions forming separate channels regulated by
dampers.
The acid passes from one leaden pan to the next in a continuous manner in its
passage to the Platinum vessels and in order to collect any Sulphate of lead which
may be formed in the said leaden pans it is preferred to provide at the side of the
outlet end of the pan a receiver for the Acid with a delivery spout at the
discharge level and into this receiver any Sulphate of lead will be passed by
the movement of the Acid and will settle therein so that it can readily be removed.
The said spout delivers the Acid to the next pan by a receiver at the side of its
inlet end. The pans are at lower levels as they approach the platinum vessels.
The arrangement according to our Invention may be employed for the evaporation
or concentration of any liquids to which it is or may be applicable.

page_text: WO THOMAS WILLIAM BASSETT Mumford Managor to Massieurs James Gibbs
and Company of Victoria Docks in the County of Essex Chemical Manufacturers
and ROBERT MOODIE Engineer to the said firin do hereby declare the nature of
this invention for "IMPROVEMENTS IN APPARATUS FOR THE CONCENTRATION OF
SULPHURIC ACID OR FOR ANALOGOUS PURPOSES" and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:-
Our Invention has for its principal object to effect the concentration of sulphuric
acid in a more ready and economical manner than hitherto and with less liability
of injury to the preliminary evaporating pans employed-We will describe our
Invention with reference to the accompanying drawing whereon Figure 1 is a plan
Figure 2 a vertical section on the line 1. 2 and Figure 3 a vertical section on the
line 3. 4. Figures 4 and 5 are an elevation and plan showing the arrangement for
passing the liquid from one leaden pan to another as hereinafter described.
According to our Invention the hot gases after leaving the furnaces A for
heating the platinum vessels B, are passed into a gas mixing or combustion
chamber C. in order that they may become mixed and more perfectly ignited, the
leaden or equivalent pans D through which the acid is passed on its way to the
platinum or final concentration vessels being arranged upon a flue or passage E
through which the products of combustion from the furnaces A and Gas mixing or
combustion chamber C pass on their way to the Chimney at F-This flue or
passage E is mado of a considerably larger capacity or greater depth at the end
nearest the said furnace A than at the end nearest the outlet to the Chimney F
and is provided at its entrance with a curtain or hanging bridge & beneath which
the gases from the furnaces A and chambor C are compelled to pass so as to enter
the fluo E at its lowest point in order that the said gases inay expand and be more
evenly diffused before impinging on the plates supporting the evaporating pans
The said flue E is preferably divided longitudinally by a partition as at II (or by
two or more such partitions) forming separate channels side by side, the passage
through each being capable of being independently regulated by dampers as at h
The acid passes from one leaden pan to the next in a continuous manner in its
passage to the platinum vessels and in order to collect any sulphate of lead which
inay be formed in the said leaden pans it is preferred to provide for each two
adjacent pans the arrangement shown in elevation and plan in figures 4 and 5-
At the side of the outlet end of the pan there is fixed a receiver I for the acid
with a delivery spout at the discharge level and into this receiver any sulphate
of lead will be passed by the movement of tho acid and will settle therein so that
it can readily be removed. The bottom of the Receiver I., is level with or beneath
the level of the bottom of the pan and the said receiver opens into the said pan on
level with its bottom,
•
a
The said spout & delivers the acid to the next pan by a receivor J at the sido
of its inlet end and in communication with the said pan-The leaden pans D are
at lower levels as they approach the platinum vessels.

page_text: The arrangement according to our Invention is not restricted for use in
concentrating sulphuric acid as it may be employed for the evaporation or
concentration of any liquids to which it is or may be applicable.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
First In apparatus for the concentration of sulphuric acid or for analogous
purposes the combination of a gas mixing or combustion chamber and of a fluo or
passage through which the hot gases pass from the furnace or furnaces, the said
flue or passage being of greatest capacity at the end nearest the fire and thero
being a curtain or hanging bridge between the said gas mixing or combustion
chamber and the large end of the said flue or passage substantially as and for the
purposes herein before described.
Second-In apparatus for the concentration of sulphuric acid or for analogous
purposes the combination of a gas mixing or combustion chamber and a flue or
passage through which the hot gases pass from the furnace or furnaces, the said
flue or passage being of greatest capacity at the end nearest the firo, and being
divided by a partition or by partitions into two or more channels side by side
capable of being independently regulated and there being a curtain or hanging
bridge between the said gas mixing or combustion chamber and the large end of
the said flue or passage substantially as and for the purposes herein before
described.
Third In apparatus for concentrating sulphuric acid or for analogous purposes
the combination with the evaporating pans of the arrangements hereinbefore
described and illustrated in Figures 4 and 5 of the accompanying drawings for the
purpose described.