Improved Means and Apparatus for Heating, Purifying, Separating, Storing, and Filtering Feed Water for Steam Generators, and Superheating the Steam therefrom.
Year: 1895

page_text: Date of Application, 16th Aug., 1895
Complete Specification Left, 15th May, 1896-Accepted, 20th June, 1896
PROVISIONAL SPECIFICATION.
Improved Means and Apparatus for Heating, Purifying, Separating,
Storing, and Filtering Feed Water for Steam Generators, and
Superheating the Steam therefrom.
I, TOM WILLIAM BAKER of Broad Street House London E.C. Engineer do
hereby declare the nature of this invention to be as follows:-
The object of this invention is to render the feed water before entering high
pressure steam generators practically pure by means of the heat in the flues and
assisted by the generator steam, also that the same heat may be used in the same
reservoirs if preferred for superheating the steam.
In carrying out this invention I use in combination with any horizontal
cylindrical steam generator a cylindrical reservoir which I place as a cover to the
side flues of such generators and preferably reaching their full length having a
connecting steam pipe placed between the top of the generator and this reservoir,
the feed water inlet being at one end, and the outlet to the steam generator at the
opposite end, with proper mud cocks and man lids for cleaning.
The action of this apparatus is therefore that as the feed water enters the
reservoir it meets with and becomes the same temperature and pressure as the
generator, which being over 300 deg. Fah. separates the particles of lime and
other impurities from it depositing them to the bottom of the reservoir during the
progress of the feed water from its inlet to the outlet, at the opposite end and
entering the steam generator practically pure, the necessary heat being given to
it by the generator steam also by the heat in the flues beneath.
These reservoirs may be partly filled with water or wholly so, and the free air
liberated by the heat is taken up by the live steam connection to the main steam
outlet.
A reservoir as described may be placed on either or both sides of the generator
of any required diameter, and any two generators may be coupled to any
reservoir, and also may be used in the uptakes of marine and locomotive steam
generators.
Sometimes in water tube steam generators with longitudinal inclined tubes
I place the reservoir under the steam drum and transversely to it, serving as a
flue divider, and in transversely inclined tube generators I place this reservoir
in the uptake or upper flue in order to absorb some of the effluent heat
therefrom.
These reservoirs may be fed by water from live or exhaust steam feed water
heaters and economizers of any known type and a filter and scum collector may
also be affixed to them if desired so eliminating all oleaginous matter.
In some
nstances I prefer to use these reservoirs for the purpose of superheating the steam
from the generators so utilizing the heat from the flues for this purpose, the
reservoirs being conuected to the steam generators as described and preferably at
one end, but having the main outlet for the steam at the other end, and if preferred
he reservoir on one side of a cylindrical steam generator may be used as a purifier
nd the one on the other side as a superheater and may consist of one or more
ubes for this purpose and may be placed in the side flues as well as covering the
In some steam generators I provide a flanged tube which I insert through
he front plate of the generator and partially closed at its inner end, into which
ame.

page_text: I feed the water by a smaller pipe or tube at its upper side, having a mud lid
and blow off cock from its lower internal surfaces through the front cover plate;
it will be seen that the feed water on entering this larger tube meets with the
highest temperature of the generator and the lime salts are immediately
precipitated, the effluent being purified and passing into the evaporative portion 5
of the generator through the apperture at the inner end.
Dated this 31st day of July 1895.
Improved Means and Apparatus for Heating, Purifying, Separating,
Storing, and Filtering Feed Water for Steam Generators, and
Superheating the Steam therefrom.
I, TOM WILLIAM BAKER of Broad Street House, London, E.C., Engineer
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 object of this invention is to render the feed water before entering high
pressure steam generators practically pure by means of the heat from the flues
and assisted by the generator steam, also that the same heat may be used in the
same reservoir if preferred for superheating the steam.
In carrying out this invention I use in combination with any horizontal
cylindrical steam generator a cylindrical reservoir which I place as a cover to the
side flues of such generators and preferably running their full length having a
connecting steam pipe placed between the top of the generator and this reservoir,
the feed water inlet being at one end and the outlet to the steam generator at the
opposite end with proper mud cocks and man lids for cleaning.
The action of this apparatus is therefore that as, the feed water enters the
reservoir it meets with and becomes the same, temperature and pressure as the
generator, which being over 300 deg. Fah. separates the particles of lime and other
impurities from it, depositing them to the bottom of the reservoir during the
progress of the feed water from its inlet to the outlet at the opposite end and
entering the steam generator practically pure, the necessary heat being given to
it by the generator steam also by the heat in the flues beneath.
These reservoirs may be partly filled with water or wholly so, and the free air
liberated by the heat is taken up by the live steam connection to the main steam
outlet.
A reservoir as described may be placed on either or both sides of the generator
of any required diameter and any two generators may be coupled to any reservoir,
and also may be used in the uptakes of marine and locomotive generators.
Sometimes in water tube steam generators with longitudinal inclined tubes,
I place the reservoir under the steam drum and transversly to it, serving as a
flue divider and in transversly inclined tube generators I place the reservoir
in the uptake or upper flue in order to absorb some of the effluent heat
therefrom.
These reservoirs may be fed by water from live or exhaust steam feed water
heaters and economizers of any known type and a grease and scum collector may
also be affixed to them if desired so eliminating all oleaginous matter.
In some instances, I prefer to use these reservoirs for the purpose of super-
heating the steam from the generators, so utilizing the effluent heat in the flues
for this purpose, the reservoirs being connected to the steam generators as
described and preferably at one end, but having the main outlet for the steam at
the other end, and if preferred the reservoir on one side of a cylindrical steam

page_text: generator may be used as a purifier and the other side as a superheater, and may
consist of one or more tubes for this purpose and may be placed in the side flues.
as well as covering the same.
In some steam generators I provide a flanged tube which I insert through the
front plate of the generator and partially closed at its inner end, into which I feed
the water by a smaller pipe or tube at its upper side having a mud-lid and blow
off cock from its lower internal surface through the front cover plate it will be
seen that the feed water ou entering this larger tube meets with the highest.
temperature of the generator and the lime salts are liberated and precipitated,.
the effluent being purified and passing into the evaporative portion of the:
generator through the apperture at the inner end.
In order to more fully describe this invention and referring to the accompanying
drawings
Figure I is a front view and cross section of a cylindrical steam generator, which
may be of the type known as Cornish, Lancashire, dry-back marine or multitubular,
being set in masonry in the ordinary way in order to allow the effluent gases to
partially surround the shell; upon the side wall of the flues K, K I place a
cylindrical vessel or purifier A, so that the space between this wall and the
generator is covered thereby, and some of the heat is absorbed from the effluent.
gases in the flues K K.
Figure II is a longitudinal section through the purifier A, the feed water inlet.
from the pumps, heater or economizer is at B, C is the outlet to the generator for
the purified water, E is the scum collector, D the lime perforated plates, which
may be taken out for cleaning by removable clamps, and forming a conduit to the
lime blow off at D¹, the scum or grease blow off is E'; the steam generator
connection for the live steam is by the pipe H, and the pipe F is the connection
for the escape of the carbonic acid and other gases in some cases one connection
only is used.
The action of the apparatus is therefore, that as the feed-water is sprayed in
from the inlet B, to the outlet Cand by means of the bottom flue heat to the
purifier assisted by the heat of the live steam, the water is heated up to above
300 deg. Fah. so that the lime and calcareous salts are made to deposit and the
carbonic acid and sometimes chlorine gases are driven off leaving practically pure
water to be fed by gravitation or pressure into the generators.
Figure III is a longitudinal section of a locomotive generator showing the
purifier in one or more cross lengths A and A', in order to get a sufficient traverse
of the water to obtain a separation of the salts and the absorbtion of the effluent.
heat, in the same manner two or more of these purifiers may be placed in the
uptakes of marine type generators with similar live steam connections as described
in Figures 1 and 2.
Figure IV shows a water tube steam generator with a similar purifier A placed
alongside the steain containers G, G, also a trausverse vessel A' as a preliminary
purifier, serving also as a flue divider, but either or both may be used as a purifier
only if desired.
Figure V is a cross section of same showing purifier A between containers G, G.
The live steam connection being at H, and the grease blow off at E', the lime
blow off D', the inlet is at B and outlet at C.
Should at any time sufficient heat be obtained that one vessel only at either side
of a generator or in the uptakes be sufficient to purify the water, the other side
or second vessel may be used as a steam superheater, and may be worked at a
higher pressure than the generators if desired for either purpose.
These purifiers may be used as feed water storage reservoirs and for that
purpose can be made any required diameter, they also may be made to contain
a higher temperature and pressure than the ordinary working pressure, by working
the generators at certain times at this higher pressure.
.
It must be distinctly understood that I do not claim the use of any particular
form of steam generator, except in combination.

page_text: 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 use and combination of a cylindrical steam generator with a feed water
purifier placed alongside on the masonry and covering the side flues thereof, and
connected to the steam space and main steam pipes, having a scum and grease
collector, also lime blow-off, substantially as described in the accompanying
drawings and for the purposes set forth.
2. The use and combination with any water tube steam generator with a purifier
placed alongside of the steam containers thereof, and in contact with the effluent
heat, also a transverse vessel as a purifier which can be used as a flue divider,
. working together or separately as may be required, one or both having a scum
collector, lime blow off and live steam connections, substantially as described in the
accompanying drawings and for the purposes set forth.
3. The use and employment of these purifiers; of any required diameters so
situated as to absorb some of the effluent heat from the steam generator gases
and in conjunction with the live steam connections, to store heated purified water
at the maximum steam generator pressure and to be admitted to these generators
as may be required, substantially as described in the accompanying drawings and
for the purposes set forth.
4. The use and employment of a tube placed through the end of a cylindrical
steam generator or vessel as a part thereof, having in it a scum collector and lime
blow off outlets as described and for the purposes set forth.,
Dated thie 15th day of Ma 1906