Improved Apparatus for Heating and Purifying Water.
Year: 1894

page_text: Date of Application, 9th July, 1894
Complete Specification Left, 9th Apr., 1895-Accepted, 6th July, 1895
PROVISIONAL SPECIFICATION.
Improved Apparatus for Heating and Purifying Water.
I, REGINALD HADDAN of the Firm of Herbert Haddan & Co. Patent Agents
of 18 Buckingham Street Strand W.C. London in the County of Middlesex, Civil
Engineer do hereby declare the nature of this invention a communication to me
from abroad by Charles James Leroy of 7 Rue Danton, Levallois-Serret in the
Republic of France Manufacturer to be as follows
-
This invention consists in an improved apparatus for heating and purifying water
for the purpose of supplying same to boilers or otherwise and utilizing the heat in
the waste steam from the engine or other source for that purpose.
This apparatus consists of a chamber in the upper part of which is a rose for
entrance of the water to be treated, and below the rose is a stack of short lengths
of pipe placed in layers one above the other with their axes vertical, the layers
being so placed that the passage through the pipes is diverted at each layer.
In the
Below the stack the chamber contains a central vertical pipe rising from a second
chamber under the floor of the first, and terminating at a distance below the stack
where its open end is protected by a cover plate. Surrounding this pipe is a hollow
cone extending down to within a short distance of the floor of this chamber.
lower chamber is a spiral pipe or equivalent device with inlet and outlet for water
to be heated by the steam entering this chamber.
In certain cases a rose may be
placed in this chamber instead of the spiral pipe.
The waste steam having entered the lower chamber and parted with some heat
to the spiral pipe therein, rises in the pipe in the upper chamber, deposits oily
impurities on the cover plate, and rises through the stack of pipes where it meets
the descending water. The effect of this stack of pipes is not only to condense the
steam or the greater part of it and heat the downflowing water, but to cause the
salts in the latter to be precipitated and the principal part of this precipitate falls
with the water and is deposited in the bottom of the chamber while the clarified
water is drawn off by a pipe from within the cone.
This water may be carried into another chamber in which the clarifying process
is repeated.
By aid of a three-way cock this apparatus may be applied to a condensing engine
without diminishing the vacuum in the condenser.
Dated this Oth day of Jul 1901
Improved Apparatus for Heating and Purifying water.
I REGINALD HADDAN of the Firm of Herbert Haddan & Co. Patent Agents
of 18 Buckingham Street, Strand, W.C. London in the County of Middlesex Civil
Engineer do bereby declare the nature of this invention a communication to me
from abroad by Charles James Leroy of 7 Rue Danton, Levallois-Serret, in the
o Republic of France Manufacturer and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement :-
This invention consists in an 'improved' apparatus for heating and purifying

page_text: water for the purpose of supplying same to boilers or otherwise and utilizing the
heat in the waste steam from the engine or other source for that purpose.
This apparatus consists of a chamber in the upper part of which is a rose for
entrance of the water to be treated and below the rose is a stack of short lengths
of pipe placed in layers one above the other with their axes vertical, the layers
being so placed that the passage through the pipes is diverted at each layer.
Below the stack the chamber contains a central vertical pipe rising from a second
chamber under the floor of the first and terminating at a distance below the stack
where its open end is protected by a cover plate. Surrounding this pipe is a hollow
cone extending down to within a short distance of the floor of this chamber. In
the lower chamber is a spiral pipe or cquivalent device with inlet and outlet for
water to be beated by the steam entering this chamber.
In certain cases a rose may be placed in this chamber instead of the spiral
pipe.
The waste steam having entered the lower chamber and parted with some heat
to the spiral pipe therein, rises in the pipe in the upper chamber, deposits oily
impurities on the cover plate above mentioned, and rises through the stack of pipes
where it meets the descending water. The effect of this stack of pipes is not only
to condense the steam or the greater part of it and heat the downflowing water, but
to cause the salts in the latter to be precipitated and the principal part of the
precipitate falls with the water and is deposited in the bottom of the chamber while
the clarified water is drawn off by a pipe from within the cone.
This water may be carried into another chamber in which the clarifying process
is repeated.
--
Reference being made to the annexed drawings:
Fig. 1 is a vertical axial section of the apparatus.
Fig. 2 is a detail sectional view.
Fig. 3 shows a modification of part of the apparatus.
Fig. 4 is a vertical section of a modified construction of the chamber A.
Fig. 5 is a horizontal section thereof.
Referring to the drawings :-
The apparatus consists of the condensing and purifying chamber A of the
reservoir B communicating with a second reservoir B', and of the heating
chamber C, in which is a spiral or helical pipe. The cold feed water enters the
apparatus by the pipe t, furnished with a rose a, and falls down in the form of
spray upon the small tubes A' arranged in tiers (as in Fig. 5), one above the other,
as aforesaid, whence the water passes into the reservoir B and from there by the
pipe t¹ (Fig. 1) to the reservoir B₁ from which it is pumped by the usual feed
pump through the pipe C¹ into the steam generator.
The exhaust steam from the engine on the other hand enters the heating
chamber C through the pipe T and communicates a portion of its heat to the
pipe C', it then passes up through the pipe H, to which it also imparts heat and
strikes against the cover D where it leaves a portion of its greasy impurities before
ascending through and around the tubes A¹. During its passage through the
chamber A the steam is in contact with the inner and outer surfaces of the tubes A¹
and with the water descending from the rose a so that the best possible facilities
are thus afforded for a rapid exchange of heat a part of the steam being condensed
and the feed water raised to a temperature of about 100° Centigrade.
A peculiar result of the arrangement is that the water which runs in thin sheets
along the surfaces of the tubes A' and falls in minute drops in the midst of the
ascending steam is at the same time as its temperature is raised subject to a kind of
re-action whereby it is instantaneously freed from any mineral substances held in
suspension or solution. These substances adhere to the surfaces of the tubes or fall
to the bottom of the reservoir B. To prevent the mud so deposited from being
carried into the steam boiler and also to collect any greasy particles in the steam
I provide in the reservoir B the cone E upon the outside of which the water falls
and descends to the bottom subsequently rising as the water collects up into the

page_text: interior of the cone E. As the rate of travel of the water is very small any fatty
matters in it or carried along with it rise to the surface whilst the mud falls to the
bottom. The pipe t¹ the end of which extends to an intermediate height thus
carries off clear water only.
As in some cases, from want of water or other cause, the mud or grease may
pass into the pipe t¹, I connect the latter to the second reservoir B¹ in which the
water has to first pass through the separator B before gaining access to the
discharge pipe I. Perfectly clear water is thus insured.
In the second reservoir B₁ I also fit a float F, which as it rises and falls operates
the rack F1 and thereby turns on or off the valve F* so as to regulate the water
feed through the pipe t.
For the purpose of cleaning out sediment from the reservoir B I provide two man-
hole or hand hole doors O which only require to be opened say once in every three
or four months.
✗ is an automatic blow off cock, V the feed pipe to the generator, and U the
inlet pipe.
As the tubes A¹ have ten times the cross sectional area necessary for the escape
of the steam and present a very large surface for collection of sediment or fur it is
advisable to remove the first 2 or 3 rows every six months or once a year and replace
them by others. The incrusted tubes are readily cleaned and will last for an
indefinite time.
In some cases, if preferred, the coiled pipe C¹ in the chamber C may be
replaced by a rose as shown in Fig. 3 which is set in rotary motion by the
steam.
In cases where it is necessary to thoroughly clean the tubes A' at intervals I may
fit them in an inner casing G (see Fig. 4) which fits concentrically and removably
within the outer casing B. With this arrangement the inner casing with its
tubes A¹ can be readily removed after the cover has been taken off, for the purpose
of permitting the tubes to be easily removed for cleaning whenever thought
necessary.
When the device is adapted to steam engines fitted with a condenser a special
cock is fitted in the communication pipe as shown at S Fig. 2.
The tubes A¹ may be of round or any other section, and may be arranged in any
suitable order.
In some cases if so desired the coil pipe C¹ may be dispensed with.
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. A feed water heater and purifier having a chamber containing a number of
superposed layers of tubes A¹ through which the exhaust steam ascends and in its
ascent meets a falling spray of water substantially as hereinbefore set forth.
2. The combination with the chambers A and B and pipes A' of the steam
pipe H, with its cover D and external cone E, substantially as described.
3. The combination with the chamber A and its tubes A' of the reservoir B and
the heating chamber C with the feed water heating coil C' therein substantially as
hereinbefore described with reference to the drawings annexed.
4. The combination with the chamber A. and its tubes A¹, of the reservoir B¹
controlling a float for automatically regulating the feed water supply to chamber A,
substantially as described.
5. The general arrangement and combination of parts of the apparatus substan-
tially as hereinbefore described and shown in the drawings annexed.
Dated this 9th day of April 1895
R. HADDAN.