Improvements in and relating to Apparatus applicable to Evaporating, Concentrating, Distilling, and Condensing Liquids.
Year: 1897

page_text: Date of Application, 30th Mar., 1897
Complete Specification Left, 18th Dec., 1897-Accepted, 26th Feb.,
1898
Improvements in and relating to Apparatus applicable to
Evaporating, Concentrating, Distilling, and Condensing
Liquids.
I, JAMES FOSTER, of 11, St. Andrews Drive, Pollokshields, in the County of the
City of Glasgow, Engineer, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improvements in and relating to apparatus applic-
able to evaporating, concentrating, distilling and condeusing, liquids, and specially
comprises an improved arrangement for feeding each tube with liquid, and an
improved method of withdrawing the vapour from the top and bottom of vessel.
As applied to an evaporator working under multiple effect, the liquor would be fed
by a main central horizontal pipe to vertical branches leading down to liquor distri-
buting chambers placed over top cover of vessel, these chambers preferably.cach
supplying two rows of evaporating vertical tubes.
The tubes would preferably consist of film evaporating tubes of the kind described
in the Specification of my Patent No. 3118 of 1895.
A chamber or vapour escaping space would be formed between the top tube plate
and the cover of vessel forming the bottom of the liquor distributing chambers, and
short pipes or duots would lead the liquor down from the latter to each of the
evaporating tubes, and a conical or raised part would be fitted at the centre of the.
bottom of each distributing chamber for deflecting the liquor towards both sets of
downwardly conveying liquor pipes. The vapour escaping chamber would be formed
as a separate piece or casting bolted to flanged plates at top tube plate and bottom of
distributing chamber respectively. A separate chamber or bottom cover would bo.
bolted to vessel below the bottom tube plate having an outlet at centre for the con-
centrated liquor to be discharged through, and a branch would lead up from this
bottom outside the vessel to an outlet branch having a connection under vacuum to
the next evaporator or to a condenser; while a branch connection would lead from
this same outlet to convey away the vapour, preferably past a vertical baffle plato
in a "gave-all" vessel, froin the vapour escape chamber at top of vessel above upper
tube plate. The outlet for the escape of the combined vapour from bottom and top
of vessel may be placed in an intermediate position or at the top or bottom parts of.
vessel.
A steam inlet branch would be fitted preferably about centre of evaporating vessel,
and a condensed steam outlet above the lower tube plate.
0041
1907

page_text: Improvements in and relating to Apparatus applicable to
Evaporating, Concentrating, Distilling, and Condensing
Liquids.
I, JAMES FOSTER, of 11, St. Andrews Drive, Pollokshields, in the County of the
City of Glasgow, Engineer, do hereby declare the nature of my invention, and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement, that is to say :-
This invention has reference to improvements in and relating to apparatus applic-
able to evaporating, concentrating, distilling, and condensing, liquids, and specially
comprises an improved arrangement for feeding each tube with liquid, and an
improved method of withdrawing the vapour from the top and bottom of
vessel.
And in order that my said invention and the manner of carrying same into 1
practice may be properly understood, I have hereunto appended a sheet of explana-
tory drawings in which Figure 1 is a sectional olevation and Figure 2 a sectional
plan view of an evaporator as constructed in accordance with my improvements.
Referring to these drawings:-
As applied to an evaporator working under multiple effect, the liquor would be
fed by a main central horizontal pipe A to vertical branches A leading down to liquor
distributing chambers A placed over top cover B¹ of vessel B, these chambers A²
preferably each supplying two rows of evaporating vertical tubes b.
The tubes would preferably consist of film evaporating tubes of the kind described
in the Specification of my Patent No. 3118 of 1895.
A chamber or vapour escaping space B would lie formed between the top tube
piate B and the cover B¹ of vessel B forming the bottom of the liquor distributing
chambers A and short pipes or ducts 61 would lead the liquor down from the latter
to each of the evaporating tubes-b and a conical or raised part a would be fitted at the
centre of the bottom of each distributing chamber A° for deflecting the liquor towards
both sets of downwardly conveying liquor pipes b¹. The vapour escaping chamber B³
would be formed as a separate piece or casting bolted to flanged plates at top tube
plate B³ and bottom of distributing chamber respectively. A separate chamber or
bottom cover C would be bolted to vessel B below the bottom tube plate B' having an
outlet C¹ at centre for the concentrated liquor to be discharged through, and a
branch C would lead up from this bottom Coutside the vessel B to an outlet branch C³
having a connection under vacnum to the next evaporator or to a condenser; while a
branch connection c would lead from this same outlet C³ to convey away the vapour,
preferably past a vortical baffle plate c' in a "save-all" vessel, from the vapour escape
chamber B at top of vessel above upper tube plate B³. The outlet for the escape of
the combined vapour from bottom and top of vessel may be placed in an inter-
mediate position or at the top part of vessel.
A steam inlet branch B would be fitted preferably about centre of evaporating
vessel B and a condensed steam outlet above the lower tube plate B*.
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 :-
First. The arrangement of devices for feeding the tubes with liquid substan-
tially as herein described in reference to and shown in the accompanying
drawings.
Second. The method of withdrawing the vapour from the bottom of vessel

page_text: substantially as herein described in reference to and shown in the accompanying
drawings.
Third. The method of withdrawing the vapour from both the top and bottom of
vessel, substantially as herein described in reference to and shown in the accompanying
drawings.
D
TELL 1
L 1007
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.