Improvements in the Manufacture of Salt.
Year: 1891

page_text: Date of Application, 27th Oct., 1891
Complete Specification Left. 26th Aug. 1892-Accepted. 1st Oct.. 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Salt.
I, JOSEPH ELTON BOTT of Brinnington Hall, Stockport, in the County of
Chester, Engineer, do hereby declare the nature of this invention to be as
follows:
:-
The invention has for its object improvements in the manufacture of salt whereby
the brine is more speedily evaporated than by the processes hitherto in use, and
there is less risk of producing burned or discolored salt.
For this purpose I place brine in a pan or container fitted with tuyeres either in
the bottom or sides or it may be in both and I pass currents of hot air through such
tuyeres into and through the brine for the purpose of evaporating the same.
The steam and heated air passing off from the said vessel or container are used
for the purpose of heating the brine to be placed in such vessel to be treated as
above described.
JOSEPH ELTON BOTT,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Salt.
I, JOSEPH ELTON BOTT, of Brinnington Hall, Stockport, in the County of
Chester, Engineer, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The invention has for its object improvements in the manufacture of salt whereby
the brine is more speedily evaporated than by the processes hitherto in use, and
there is less risk of producing burned or discolored salt.
For this purpose I place brine in a pan or container fitted with tuyeres either
in the bottom or sides, or it may be in both, and I pass currents of hot air through
such tuyeres into and through the brine for the purpose of evaporating the same.
The steam and heated air passing off from the said vessel or container are used for
the purpose of heating the brine to be placed in such vessel to be treated as above
described.
And in order that my said invention may be more clearly understood and readily
carried into effect, I will proceed, aided by the accompanying drawings, more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of apparatus such as I employ in carrying my inven-
tion into effect.
Figure 2 is a vertical section drawn on the line X-x of Figure 1, and.
Figure 3 is a sectional plan drawn on the line Z-Z of Figure 2.
In all the figures like parts are indicated by similar letters of reference.
The apparatus consists of an evaporating vessel A, the base plate B of which is
perforated to receive the vertical perforated tubes D D, the lower ends of which
communicate with the air chamber C, which acts as a reservoir for the hot air
conveyed under pressure through the pipe E, trunnion G and hollow standard F
from the furnace in which the air is heated.

page_text: The spherical valve H acts as a safety valve for the release of accumulated
pressure; the cover I merely serves to close the trunnion G externally. M M are
openings, closed by valves, in the bottom of the chamber C to give access to the
tubes D D.
The top plate N rests on the vessel A and is secured, as shown, by the
clamps R R R, and can be raised by the lifting rings QQ when the said clamps
are released.
O is the inlet for the brine; this is closed by a spherical safety valve P, which
is capable of being removed for the purpose of running in the brine.
An internal outlet passage J conveys the hot air and steam away from the vessel A
through the hollow trunnion K, which also forms one of the trunnions on which the
vessel A oscillates.
The trunnions G and K of the vessel A are carried by and are capable of turning
in the standards F and L.
The manner in which I carry my invention into operation is as follows.
Air under pressure is heated in a suitable heating apparatus, and is then passed
through the standard F, trunnion G and pipe E into the receiver C, whence it
passes into the vessel A through the perforated pipes D.
The vessel A, supported by its trunnions G and K in a vertical position, and the
cover N secured thereto by the clamps RR R, the brine to be evaporated is
admitted thereto through the inlet O, and is prevented from entering the air
chamber C and perforated pipes D owing to the pressure of the heated air being
sufficient to counterbalance the weight of the brine to be treated.
Evaporation immediately commences and the inlet O is closed by the safety
valve P.
During evaporation the combined air and steam passes off through the passage J
and trunnion K, whence it goes to waste, or may preferably be used for evaporation
of brine in other vessels at a lower temperature, thus producing salt of a coarser
grade, or it may be used for heating the brine to be placed in the vessel A
to be treated as above described.
When air of a temperature of over 180° is used, exceedingly fine table salt
may be produced.
As soon as the brine in the vessel A is evaporated, the safety valves H and P are
secured in position by any suitable means, and the vessel A tilted over on its
trunnions, when, on stopping the admission of the heated air, the cover N is removed
and the precipitated salt emptied out of the vessel A into trucks or moulds for future
treatment.
It will be readily seen that several vessels may be used in sequence, the initial
one at high temperature producing the finer or table salt, and the others coarser
salt.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what 1
claim is :-
1. The manufacture of salt by the process or method of evaporating brine by the
direct contact therewith of streams of hot air under pressure and at a suitable
temperature substantially as and for the purpose specified.
2. In the manufacture of salt, the combination of evaporating vessel A with its
connected parts, substantially as herein shown and described and for the purpose
stated.
בד
1 L
ليوم
1
J. ELTON BOTT,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.