Improvements in Evaporating Apparatus.
Year: 1894

page_text: Date of Application, 22nd May, 1894
Complete Specification Left, 4th July, 1894-Accepted, 4th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Evaporating Apparatus.
I, THOMAS CRANEY, of 624 Harrison Street, Bay City, Michigan, United
States of America, Manufacturer, do hereby declare the nature of this invention
to be as follows:-
The invention consists in the peculiar construction arrangement and combination
of a multiple of evaporating chambers of pans adapted for independent operation,
with connections between the vapour discharge pipes and the steam heating
chambers of the various pans, whereby the pans may be used independently or for
a double or triple expansion as desired, all as more fully hereinafter described.
The construction first herein described is the one I deem proferable, the other
constructions herein described and modifications thereof may be employed without
departing from the spirit of my invention.
In the manufacture of salt and in the use of evaporating pans in many other
industries it frequently happens that it is desirable to change the temperature of
the beating agent in some one of the pans of a series. It also frequently happens
that one or more of the series may be desired to be cut out for cleaning or repairing
without desiring to cut out the others of the series.
My invention contemplates such a connection between a series of evaporating
pans or chambers as will enable me to obtain the above results not heretofore
obtained with such apparatus.
The apparatus comprises three similar casings, each having formed therein an
evaporating chamber and a steam heating chamber. Through the steam heating
chamber is formed a series of circulating flues and preferably a central, circulating
pipe, permitting a circulation of the fluid in the casing, so that the heavy portions
and the crystals of salt, (if salt is being obtained) may fall to the bottom, while
the hot water and vapour may arise into the evaporating chamber. At the lower
end of the casing I form a settling chamber having a settling leg, at the lower
end of which is a suitable carrier for taking off the accumulated salt or other
material to any desired point.
The evaporating chamber is provided with a suitable inlet pipe for the brine,
and the steam chamber is provided with a suitable exit pipe for the water of
circulation.
From the top of each evaporating chamber is the vapour discharge pipe leading
to a suitable condenser and terminating in a discharge leg which is controlled by
means of a valve.
A steam supply pipe and valved branches therefrom leading into the steam
chambers of the pans are provided.
In order to properly distribute the steam at all points in the steam chamber I
connect the steam pipe into an annular supply ring around the steam chamber, and
this construction I consider preferable, but I may connect it instead into a
surrounding belt of pipes having a multiple of connections into the steam chamber,
and effect the same satisfactory distribution.
The vapour discharge pipes connect into a common connecting pipe which is
connected with the steam chamber in the first pan by a pipe which I will call
branch pipe 1 with the steam chamber of the second pan by means of two other
pipes called branch pipes 2 and 3 and with the steam chamber of the third pan by
another pipe called branch pipe 4 each of these pipes being controlled by a
suitable valve. Suitable valves which I will term valves 1, 2, 3, 4 are arranged in
the common connecting nine.

page_text: The parts being thus constructed their operation is as follows.
If it is desired to supply steam from the steam pipe to the first pan and then
use the vapour arising from that pan to effect evaporation in the second pan and
use the vapour from the latter to effect an evaporation in the third pan, the steam
entering the ring around the first pan will be distributed through the steam
chamber therein, heating the brine, and the vapour therefrom will rise and find
exit through the discharge pipe of this pan entering the end of the common
connecting pipe. The valve in the branch pipes 1 and 3 being closed and the
valves 2 and 4 in the common connecting pipe being closed, the valves 1 and 3 in
the said pipe being open and the valves in the branch pipes 2 and 4 being open,
the vapour will pass from the discharge pipe of the first pan into the steam
chamber of the second pan heating and vapourizing the fluid therein the vapour
from which will pass from its discharge pipe into the common connecting pipe and
from thence through the branch pipe 4 into the steam chamber of the third pan
from which pan the vapour will pass out through its discharge pipe, the valve in
which will be open and the condenser will be in operation to create a vacuum.
By a suitable modification in the arrangement of the pipes and valves I may
reverse this order and start with the third pan, or I may supply live steam to the
central pan and use both the end pans as vacuum pans, or further I may supply
the two end pans with live steam and use the middle one only for a vacuum pan.
It is evident that if the valves in the pipes 1, 2, 3 and 4 and all the valves in
the common connecting pipe are closed the steam supplied through the branches
that all or any one of the pans may be operated separately.
Instead of using the two connecting pipes 2 and 3 from the common connecting
pipe I may make the vapour pipe from the middle tank forked to form two branch
pipes and supply the same with valves. With this construction I am enabled to
effect the same results.
Dated: 11
1:002
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Evaporating Apparatus.
I, THOMAS CRANEY, of 624 Harrison Street, Bay City, Michigan, United
States of America, Manufacturer, 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 consists in the peculiar construction arrangement and combination
of a multiple of evaporating chambers of pans adapted for independent operation,
with connections between the vapour discharge pipes and the steam heating
chambers of the various pans, whereby the pans may be used independently or for
a double or triple expansion as desired, all as more fully hereinafter described.
In the accompanying drawings
Figure 1 is a front elevation of my improved apparatus.
Figure 2 is a cross section on line, r, Figure 1, drawn to a reduced scale.
Figure 3 is a side elevation partly in section.
Figure 4 is a front elevation of my apparatus showing a modified arrangement of
the connections.
Figure 5 is a section-similar to Figure 2 through Figure 4.
Figure 6 is a section similar to Figure 5 showing a modification of the con-
necting pipes specifically referred to, and
Figures 7, 8, 9 and 10 are diagrammatic views specifically referred to.

page_text: The construction shown in Figures 1 and 2 is the one I deem preferable and I
shall therefore describe that first, the other constructions herein shown and
modifications thereof may be employed without departing from the spirit of my
invention.
In the manufacture of salt and in the use of evaporating pans in many other
industries it frequently happens that it is desirable to change the temperature
of the heating agent in some one of the pans of a series. It also frequently
happens that one or more of the series may be desired to be cut out for cleaning
or repairing without desiring to cut out the others of the series.
My invention contemplates such a connection between a series of evaporating pans
or chambers as will enable me to obtain the above results not heretofore obtained.
with such apparatus.
A A A are similar casings, each having formed therein an evaporating
chamber B and a steam heating chamber C. Through the steam heating chamber
is formed a series of circulating flues D and preferably a central, circulating
pipe E, permitting a circulation of the fluid in the casing, so that the heavy
portions and the crystals of salt, (if salt is being obtained) may fall to the
bottom, while the hot water and vapour may arise into the evaporating chamber.
At the lower end of the casing I form a settling chamber F having a settling
leg G, at the lower end of which is a suitable 'carrier H for taking off the
accumulated salt or other material to any desired point.
The evaporating chamber is provided with a suitable inlet pipe I for the brine,
and the steam chamber is provided with a suitable exit pipe J for the water of
circulation.
From the top of each evaporating chamber is the vapour discharge pipe K
leading to a suitable condenser L, and terminating in a discharge leg M, which is
controlled by means of a valve M¹.
O is a steam supply pipe and P P1 and P2 are valved branches therefrom leading
into the steam chambers of the pans A. A' A' respectively.
In order to properly distribute the steam at all points in the steam chamber I
connect the steam pipe into an annular supply ring Qaround the steam chamber,
as shown in Figure 2, and this construction I consider preferable, but I may
connect it instead into a surrounding belt of pipes Q, as shown in Figure 6, having
a multiple of connections into the steam chamber, as shown therein, and effect the
same satisfactory distribution.
The vapour discharge pipes K connect into a common connecting pipe R which
is connected with the steam chamber in the pan A by the pipe 1, with the steam
chamber of the pan A² by means of the pipes 2 and 3 and with the steam chamber
of the pan A by the pipe 4, each of these pipes being controlled by a suitable
valve 5, 6, 7, 8 and 9 are valves in the connecting pipe R.
The parts being thus constructed their operation is as follows.
If it is desired to supply steam from the steam pipe O to the pan A and then
use the vapour arising from that pan to effect evaporation in the pan A¹ and use
the vapour from the pan A¹ to effect an evaporation in the pan A³, the steam
entering the ring Q around the pan A will be distributed through the steam
chamber C therein, heating the brine, and the vapour therefrom will rise and find
exit through the discharge pipe K of this pan entering the end of the connecting
pipe R. The valve in the pipes 1 and 3 being closed and the valves 7 and 9 in
the pipe R being closed, the valves 6 and 8 in the pipe R being open and the
valves 5 in the pipes 2 and 4 being open, the vaponr will pass from the discharge
pipe K of the pan A into the steam chamber of the pan A' heating and vapourizing
the fluid therein the vapour from which will pass from its discharge pipe K into
the pipe R and from thence through the pipe 4 into the steam chamber of the
pan A from which pan the vapour will pass out through its discharge pipe K, the
valve M in which will be open and the condenser L will be in operation to create
a vacuum. This circulation is shown in diagram in Figure 7.

page_text: In case it is desired to reverse this order and start with A³, the circulation will
be as shown in Figure 8.
In case it is desired to supply live steam to the central pan and use both the end
pans as vacuum pans, the circulation will be as shown in Figure 9, and in case it
is desired to supply the two end pans with live steam and use the middle one only
for a vacuum pan the circulation will be as shown in Figure 10.
.
It will be obvious from these diagrams which of the valves shall be opened or
-closed for a given circuit.
It is evident that if the valves 5 in the pipes 1, 2, 3 and 4 and all the valves in
the pipe Rare closed and steam supplied through the branches. P P P that all or
any one of the pans may be operated separately.
Figures 4 and 5 show a slightly modified arrangement of these connections.
Instead of using the two connecting pipes 2 and 3 from the pipe R, I have shown
the vapour pipe K from the middle tank forked to form two branch pipes S, S¹
and supplied with valves S2. With this construction I am enabled to effect the
same results.
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 I
claim is:-
1. In a multiple evaporator apparatus, the combination of a series of evaporating
chambers, each having a discharge pipe for vapour and a settling leg or chamber,
of connections whereby each evaporator may be operated separately or in series,
using the vapour from the first distillation.
2. In an evaporating apparatus, the combination of a series of evaporating pans,
each having a vapour heating chamber, a condenser for each, a discharge pipe from
each condenser, a common trunk into which said discharge pipes connect, a valved
pipe for each discharge pipe below the trunk, valved connections from the trunk
to the heating chamber of each pan, and valved steam supply pipes to each heating
chamber.
1004
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.