Improvements in Boiler Feed-water Heating and Purifying Apparatus.
Year: 1894

page_text: Date of Application, 24th Oct., 1894
Complete Specification Left, 24th Aug., 1895-Accepted, 19th Oct.,
1895
PROVISIONAL SPECIFICATION.
Improvements in Boiler Feed-water Heating and Purifying
Apparatus.
1, JAMES EDMUND CARROLL, of Albany Buildings, 39 Victoria Street
Westminster, in the County of London, Engineer, do hereby declare the nature
of this invention to be as follows:-
This invention relates to certain improvements in apparatus and means for
purifying water by removing therefrom salts and other foreign matters and thereby
rendering the water more serviceable for steam boilers and for other industrial
purposes.
In carrying out my invention I propose to arrange within a boiler which may
otherwise be of ordinary construction a series of tubes in which the water is deprived
of its impurities before reaching a storage tank. These tubes are preferably
arranged in parallel rows and in a longitudinal direction within the boiler the tubes
being connected together at each end of the boiler by means of a tube arranged
transversely at each end of the boiler. The transverse tubes may be arranged
below the normal level of the water in the boiler and the longitudinal tubes at the
same or at a higher level, or I may arrange for one end only of these to be above
the water level so as to give an inclination or fall from end to end of the tubes.
The water supply pipe is provided with a suitable stop cock or valve and has a
branch pipe also fitted with a stop cock through which steam is admitted from the
boiler. The outlet or delivery pipe is likewise furnished with a stop cock and branch
pipe fitted with a stop cock through which the solid deposits are driven out or
cjected from the longitudinal tubes when required.
In operation the water to be purified is pumped or otherwise forced through the
supply pipe entering the shell of the boiler and passing thence to the first transverse
tube. From this it is caused to travel through the longitudinal tubes being exposed
during its passage to the heat of the steam within the boiler, whereby the impurities
contained therein are deposited within the tubes, the pure water passing on and out
into the storage tank. By closing the water supply and delivery valves and
opening the cock upon the branch. pipe attached to the outlet pipe the deposits can
readily be ejected by admitting steam from the boiler through the pipe attached to
the water supply pipe.
In order to facilitate the recharging of the pipes after the deposited impurities
have been driven out by the steam I provide the transverse pipe which connects the
water supply pipe with the entering ends of the longitudinal tubes with a valve
communicating with the water within the boiler. Through this valve which is
arranged to be operated from outside hot water is forced from the boiler into the
longitudinal tubes after each time the above operation is performed. As soon as
the tubes are charged, the valve is closed and the water supply once more admitted
passing through the tubes and the delivery or outlet valve on its way to the
storage tank.
This out
10ntahan 1001

page_text: Improvements in Boiler Feed-water Heating and Purifying
Apparatus.
I, JAMES EDMUND CARROLL of Albany Buildings, 39 Victoria Street,
Westminster in the County of London, 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 :-
This invention relates to certain improvements in apparatus and means for
purifying water by removing therefrom salts and other foreign matters and thereby
rendering the water more serviceable for steam boilers and for other industrial
purposes.
In order that my invention may be clearly understood reference is had to the
accompanying drawing upon which,-
Figure 1 is a front end elevation of a doubled flued Cornish boiler having my
improved apparatus applied thereto.
Figure 2 being a longitudinal section of the same.
Figure 3, a plan thereof.
In carrying out my invention I arrange within a boiler A which may otherwise
be of ordinary construction a series of tubes B in which the water is deprived of its
impurities before reaching the boiler or storage tank.
These tubes B are preferably arranged in parallel rows and in a longitudinal
direction within the boiler, as shewn on Figs. 2 and 3, the tubes being connected
together at one or both ends of the boiler by means of a tube or tubes C C¹
arranged transversely at each end of the boiler. The transverse tubes C C¹ may
be arranged below the normal level of the water in the boiler A and the longitudinal
tubes B at the same or at a higher level, or I may arrange for one end only of
these to be above the water level so as to give an inclination or fall from one end
of the tubes to the other as shewn on Figure 2.
The water supply pipe D is provided with a suitable stopcock or valve E for the
purpose of controlling the supply of water to be purified. The outlet or discharge
pipe H is likewise furnished with a stop-cock G and branch pipe F through which
the solid deposits are driven out or ejected from the longitudinal tubes B when
required.
In operation the water to be purified is pumped or otherwise forced through the
supply pipe D entering the shell of the boiler and passing thence to the first
transverse tube C. From this it is caused to travel through the longitudinal
tubes B being exposed during its passage to the heat of the steam within the
boiler A whereby the impurities contained therein are deposited within the tubes B,
the pure water passing on into the boiler or storage tank through the outlet I. By
closing the water supply or delivery valve E, and opening the cock G upon the
branch pipe F attached to the outlet pipe H, the deposits can readily be ejected by
admitting steam from the boiler A through the discharge opening or delivery
outlet I.
In order to facilitate the recharging of the pipes after the deposited impurities
have been driven out by the steam, I provide the transverse pipe C which connects
the water supply pipe D with the entering ends of the longitudinal tubes B, with a
valve K communicating with the water within the boiler. Through this valve K,
which may be arranged either within or outside of the boiler and so as to be
operated from outside, hot water is forced from the boiler into the longitudinal
tubes B after each time the above described operation is performed. As soon as
the tubes are charged the valve K is closed and the water-supply once more

page_text: admitted, passing through the tubes B and the delivery or outlet end I on its way
to the boiler or storage tank.
In applying my invention for the purpose of supplying pure water to storage or
other tanks as well as to the boiler I may arrange for the transverse tube C¹ at the
rear end of the boiler to be connected by means of a tube L extending through the
shell of the boiler and controlled by a stopcock M to such tanks, and for the outlet I
to be similarly controlled.
In this case when it is desired to blow off the deposits I admit steam from the
front of the boiler through a steamcock O which communicates with the tubes B,
through the water-supply pipe D and thus drive the sediment out through a
blow-off N arranged upon the delivery pipe or valve M at the back of the
boiler.
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 combination with a feed-water heating and purifying apparatus of a
valve K for the purpose of recharging the apparatus with hot water as described.
2. Feed-water heating and purifying apparatus constructed combined and
arranged substantially as and for the purposes described.
Dated this 94th dox of August 1895