Improvements in Multiple Effect Apparatus for use in Evaporating Brine.
Year: 1899

page_text: Date of Application, 1st Sept., 1899
Complete Specification Left, 26th May, 1900-Accepted, 14th July, 1900
PROVISIONAL SPECIFICATION.
Improvements in Multiple Effect Apparatus for use in Evaporating
Brine.
We, EDWARD JAMES DUFF, Engineer, and THE UNITED ALKALI COMPANY
LIMITED, both of 30, James Street, Liverpool, in the County of Lancaster, do
hereby declare the nature of this invention to be as follows;-
This invention relates to multiple effect apparatus, and has for its object u
effect economy in the production of salt thereby. The evaporating chambers
may be of any suitable construction, but we prefer to use chambers in which
steam, or other heated gases, or vapours are used as a source of heat.
The evaporating chambers, (say four in number), are or may be arranged at,
or about, the same level.
Steam is admitted to the heating chamber of the first evaporating chamber,
and the steam generated by the evaporation of the brine in this chamber is
conducted to the heating chamber of the second vessel of the series and so on
throughout. The last evaporating chamber is connected with any suitable means
for producing a vacuum.
The brine is fed separately into each chamber of the series, and the brine does
not flow from chamber to chamber as hitherto.
As evaporation proceeds salt is deposited in each of the chambers and falls
through a leg into a boot through which an elevator works.
The evaporating chambers are arranged in groups of two or more, the legs
from the evaporating chambers of each group meeting in the one boot of an
elevator common to both, or all, the said legs, and from this the salt is removed
by means of the elevator.
T thin 1+ dor of Santambor 1800
Improvements in Multiple Effect Apparatus for use in Evaporating
Brine.
We, EDWARD JAMES DUFF, Engineer, and THE UNITED ALKALI COMPANY
LIMITED, both of 30, James Street, Liverpool, in the County of Lancaster, 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 follow-
ing statement; -
This invention relates to multiple effect apparatus, and has for its object
to effect economy in the production of salt thereby.
The evaporating chambers may be of any suitable construction, but we prefer
to use chambers in which steam, or other heated gases, or vapours, is, or are,
used as a source of heat. The evaporating chambers are, or may be, arranged

page_text: at, or about, the same level. Steam (or the other heating agent employed) is
admitted to the heating chamber of the first evaporating chamber, and the
steam, generated by the evaporation of the brine in this chamber, is conducted
to the heating chamber of the second evaporating chamber of the series, and so
on throughout the series; the last evaporating chamber being connected with
any suitable means of producing a vacuum. The accompanying drawing illus-
trutes, in Figures 1 and 2 in elevations at right angles to each other, an arrange-
ment of four evaporating chambers, marked A1, A2, A3, A4, the heating chambers
thereof being marked 131, 12, 13, 14, respectively, and the connections between
the heating and evaporating chambers being marked b1, 2, 3. The dips at
are for collecting and discharging water. The brine is fed, by the pipe a, and
branch pipes, into each of the evaporating chambers separately, and the brine
does not flow from chamber to chamber as hitherto. As evaporating proceeds
salt is deposited in each of the chambers and falls through a leg C, into a
boot D, through which an elevator E, works to carry the salt up a tube, or
casing, E, and deliver it into a receptacle F. The evaporating chambers are
arranged in groups of two, or more, the legs C from the evaporating chambers of
each group meeting in the one boot D), of an elevator (EE), common to both, or
all, of the said legs C, and from this boot the salt from both, or all, of the
evaporating chambers of a group is removed by means of the elevator. In the
drawing the evaporating chambers A1, A2, are shewn in one group, their legs C, C,
opening into one boot D, provided with an elevator E, E³, and the cham-
bers A, A, are shewn in another group, their legs C C opening into the boot 1),
of another elevator E E, but, as before stated, the chambers may be arranged
in a group, or in groups, of other number than two.
In Figure 1 the vessel A³, is shewn in section to illustrate the arrangement of
tubes through which the brine circulates whilst being evaporated, the said tubes
being surrounded by a belt into which the heating agent is passed as described
in the Specification of our application for Letters Patent No. 17689 of 1899.
This present invention is however not limited to the employment of this particular
arrangement of heating chamber. G is the arrangement in connection with
the last chamber of the series consisting of a descending outlet pipe into the
upper part of which condensing water is passed and falls producing the necessary
vacuum.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we declare that what we
claim is;
-
1. In multiple effect apparatus for evaporating brine; the combination
with the evaporating chambers of means for feeding them separately with
brine substantially as herein before described.
2. In multiple effect apparatus for evaporating brine; evaporating chambers
arranged in groups of two, or more, the legs, for the deposit of salt, from each
group meeting in one boot of an elevator common to both, or all, of the said
legs, substantially as hereinbefore described.
3. In multiple effect apparatus for evaporating brine; the combination with
the evaporating chambers of means for feeding them separately with brine the
chambers being arranged in groups of two, or more, the legs, for the deposit
of salt, from each group meeting in one boot of an elevator common to both, or
all, of the said legs; substantially as herein before described.
Dated this 26th day of Now 1900
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fielda, London, W.C., Agents.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.