A Method of Utilizing the Heat of Newly Manufactured Gas for Heating Boiler Feed Water, and Apparatus therefor.
Year: 1896

page_text: Date of Application, 30th Jan., 1896
Complete Specification Left, 21st Oct., 1896-Accepted, 28th Nov., 1896
PROVISIONAL SPECIFICATION.
A Method of Utilizing the Heat of Newly Manufactured Gas for
Heating Boiler Feed Water, and Apparatus therefor.
I, ARTHUR GRAHAM GLASGOW, of 9 Victoria Street, in the City of
Westminster, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a method of utilizing the heat of newly manufactured
gas for heating boiler feed water and to apparatus therefor.
In the manufacture of water gas and other gases for general distribution it is the
practice to cool the gases down to about 60° F. before passing them into the holder
or mains and this cooling is frequently done by means of surface condensers, the
hot water from which is generally allowed to run to waste or is cooled and
recirculated. Now according to my invention I cool the gas by water which is
intended to be subsequently used in a steam boiler and hence by one apparatus I
accomplish the double object of cooling the gas and of heating boiler feed water.
According to my invention I pass the boiler feed water through the pipes of a
surface condenser similar to that heretofore used for cooling the gas, but slightly
modified to meet the requirements of my invention, for it will be understood that
to cool the gas to about the temperature of the atmosphere requires a definite
quantity of water which may or may not be the same as that required for the
boiler. Now if the builer is not taking as much water as is necessary to properly
cool the gas the latter will be insufficiently cooled; and on the other hand if the
boiler is taking more water than that required for the condenser then the gas will
be cooled too much. From this it is evident that to satisfactorily utilize the heat
of newly made gas for heating boiler feed water it is necessary to add to and
modify the cooling apparatus heretofore employed so that the amount of water
passing through the condenser may be independent of the amount required by the
boiler fed by such water.
I accordingly arrange above the condenser a well into which the water after it has
passed through the condenser pipes rises. Near the bottom of this well is placed
the hot water outlet pipe from the condenser to the boiler feed pump; the inlet
for the cold water to the condenser is arranged as usual at the lower part of the
condenser. At a point some distance above the hot water outlet aforesaid is
provided an auxiliary water inlet for a purpose hereinafter stated. The passage
of water through this inlet pipe is controlled by the level of the water in the well,
by a ball float valve or other means. Near the top of the well is provided an
overflow pipe.
The operation of this apparatus is as follows:-The water which enters the
condenser passes up into the aforesaid well whence it is drawn as required by the
boiler feed pump.
If the amount of water required by the boiler is just the same
as that passing through the condenser then the water will not rise higher in the
well than is sufficient to keep the ball float valve controlling the extra inlet, closed.
If however the water consumed in the boiler is less than that passing through the
condenser then the extra water from the condenser which is not required for the
boiler will accumulate in the well and will finally escape by the overflow. On
the other band if the water required by the boiler is greater than that passing
through the condenser, the level of the surface of the water in the well will fall

page_text: and the ball float will open the auxiliary inlet and admit such a quantity of cold
water as will compensate for the deficiency of the water passing through the
condenser.
By this means, it is seen, that the water required for the boiler is regulated
automatically to meet its requirements without in any way altering the amount of
water passed through the condenser which can be regulated as heretofore by the
attendant without affecting the supply to the boiler.
Dated this 30th day of January 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
A Method of Utilizing the Heat of Newly Manufactured Gas for
Heating Boiler Feed Water, and Apparatus therefor.
I, ARTHUR GRAHAM GLASGOW, of 9 Victoria Street, in the City of
Westminster, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to a method of utilizing the heat of newly manufactured
gas for heating boiler feed water and to apparatus therefor.
In the manufacture of water gas and other gas for general distribution it is the
usual practice to cool the gas down to about 60° F. before passing it into the
holder or mains and this cooling is frequently effected by means of surface
condensers, the hot water from which is either allowed to run to waste or is cooled
for re-use in the condenser. Now according to my invention I cool the gas in a
surface condenser by water which is subsequently used in a steam boiler and hence
by one apparatus I accomplish the double object of cooling the gas and of beating
boiler feed water.
It will be obvious that no fixed relation exists between the quantity of water
required to feed the boiler and that needed for cooling the gas; indeed the
quantity of water required for each purpose will very frequently vary, and vary
sometimes inversely the one to the other. But my invention meets this require-
ment by providing a receptacle to receive the hot water from the surface condenser
and to serve as the feed water reservoir for the boiler, and by providing this
receptacle, in addition to its connections with the condenser and the boiler, with a
waste water overflow by which the water contained in it can escape when it
exceeds a determined height, and with a supplemental water supply pipe provided
with a valve which is opened or closed in accordance with the variations of the
water level in the receptacle and by which any deficiency in the supply of water
coming from the condenser can be made up. I thus regulate the quantity of water
available for use in the boiler.
Referring now to the accompanying drawing which illustrates my invention as
applied to a water gas apparatus of familiar type, A is the generator having gas
take-off pipes B and B C is the carburetting chamber; D is the fixing chamber;
E is the pipe for conveying the water gas to the washer F whence the gas passes
through the seal box G and pipe II to the scrubber J, and thence through the
pipe K to the surface condenser L on its way to the receiver apparatus and mains.
The surface condenser L is of the usual or any convenient construction; at the
ends of the portion through which the gases pass it has heads L' and L³ connected
by tubes L extending from the water receiving chamber L to the water delivery
chamber L, which, in the construction shown, serves as the receptacle from which
the boiler draws its feed water. M indicates the supply pipe through which water

page_text: is forced into the coudenser. N is the overflow pipe by which water can escape
from the receptacle L' when it exceeds a determined height. O is an auxiliary
or supplemental supply pipe leading into the receptacle Land having a cock or
valve O' which is arranged to be opened and closed by the float O' in accordance
with the height of water in the receptacle. P is the water supply pipe which leads
to the feed water pump Q; and P¹ is the pipe for conducting the feed water from
the pump to the boiler R. R' indicates a steam pipe leading from the boiler to
the gas making apparatus.
The guses produced in the generator A, after passing through the carburetting
and fixing or superheating chambers and through the washer and scrubber pass
through the surface condenser L and are cooled by the water forced upward
through the tubes L', the heated water from these tubes passing into the
receptacle L' which is conveniently placed, as shown, upon the top of the condenser,
but may, if desired, be in any other position. From this receptacle the pump Q
draws feed water for the boiler through the pipe P, and in case the supply of
water entering the receptacle L is excessive, the excess escapes through the
pipe N, while, if the supply from the condenser is not sufficient to feed the boiler
the falling of the level of the water in the receptacle L will lower the float O2 and
open the cock O¹ and permit additional water to flow from the pipe O into the
receptacle until the normal height of water is insured therein.
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 method of utilizing the heat of newly made gas for heating boiler feed
water whereby the quantity of water available for use in the boiler is regulated
substantially as and for the purpose specified.
2. The combination of a surface condenser, a receptacle such as L' furnished
with an overflow and an inlet for water controlled by a valve and float, and a pipe
conmunicating with said receptacle and forming the suction pipe of a boiler feed
pump, substantially as described.
Dated this 21st day of October 1896
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.