Improvements in Evaporating Pans for the Manufacture of Salt from Sea Water or Brine, and for other like purposes.
Year: 1891

page_text: Date of Application, 9th Oct., 1891
Complete Specification Left, 11th July, 1892-Accepted, 13th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Evaporating Pans for the Manufacture of Salt
from Sea Water or Brine, and for other like purposes.
I, THOMAS SCOTT, of 9 St. Vincent Street, Edinburgh, in the County of
Midlothian, North Britain, Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to improvements in evaporating pans for the manufacture
of salt from sea water or brine and for other like purposes and has for its object
to cheapen and facilitate the manufacture of salt by improved means for heating
the evaporating pan.
In accordance with my invention I provide the bottom of the pan with a steam
chamber; the steam is led into the one end of the chamber and the whole heat
thereof both latent and sensible is absorbed by the salt water or brine in the pan
above. I may use ordinary steam, or it may be superheated steam which may be
taken from an ordinary steam boiler or I may use the exhaust steam from any
convenient non condensing engine. The condensed water of the steam may be led
out from the opposite end of the chamber, and be pumped back into the steam
boiler so that by this means the boiler is always supplied with pure water and
also by this arrangement any heat remaining in the condensed steam is returned to
the boiler.
The steam chamber is screw studded in the ordinary way to resist the steam
pressure.
_ 1001
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.
COMPLETE SPECIFICATION.
Improvements in Evaporating Pans for the Manufacture of Salt
from Sea Water or Brine, and for other like purposes.
I, THOMAS SCOTT of 9 St. Vincent Street, Edinburgh, in the County of
Midlothian, North Britain, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to improvements in evaporating pans for the manufacture
of salt from sea water or brine and for other like purposes, and has for its object
to cheapen and facilitate the manufacture of salt and such like by improved means
for heating the evaporating pan.
In accordance with my invention I provide the bottom of the pan or a portion
thereof with a steam chamber; the steam is led into the one end of the chamber
and the whole heat thereof both latent and sensible is absorbed by the salt water
or brine, (or other liquor which it is required to evaporate) in the pan above and
by a coil for heating the liquor before being run into the pan. I may use ordinary
steam or it may be superheated steam which may be taken from an ordinary steam
boiler or I may use the exhaust steam from any convenient noncondensing engine.
The condensed water of the steam may be led out from the opposite end of the
chamber through the said coil for heating the liquors before being run into the
pan and be pumped back into the steam boiler so that by this means the boiler is
always supplied with pure water and also by this arrangement any heat remaining
in the condensed steain is returned to the builer.

page_text: In order that my said invention may be more readily understood and easily
carried into effect I will now. proceed to describe the drawings hereunto annexed.
Figure 1 is a sectional plan of the apparatus and Fig. 2 is a sectional end
elevation of the same.
The steam from the boiler is led into the one end of the steam chamber A by
the pipe (or it may be led into both ends of the chamber) to heat the evaporating
pan B. The condensed water from the steam is run out from the steam chamber
through the pipe C which is formed as a coil for heating the liquor in the chamber D
before it runs into the pan through the pipe d; c is the attachment to the pump for
forcing the condensed water back into the steam boiler, so that the whole of the
heat is thus utilized.
The steam chamber may be screw studded as shewn in the drawings in order to
resist the steam pressure.
The one steam supply and liquor heating coil may be adapted to a battery of
evaporating pans.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I'
claim is :-
(1) The general arrangement and construction of apparatus for the manufacture
of salt from sea water or brine, or for other similar purposes.
(2) The steam chamber A for heating the liquor pan.
(3) The arrangement for heating the liquor prior to its entering the liquor pan.
In evaporating apparatus, the arrangement by which the condensed water is
returned to the boiler so that the whole of the heat is thus utilized.
JOHNSONS,