Improvements in Purifying and Heating the Feed Water of Steam Boilers, and in Apparatus therefor.
Year: 1893

page_text: Date of Application, 11th Dec., 1893
Complete Specification Left, 10th Sept., 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Purifying and Heating the Feed Water of Steam
Boilers, and in Apparatus therefor.
We, JULES NICLAUSSE, and ALBERT NICLAUSSE, both of 24 Rue des
Ardennes, Paris, in the Republic of France, Civil Engineers, do hereby declare the
nature of this invention to be as follows:-
According to this invention we deliver the feed water in the form of spray into
the steam inside the boiler and allow it to drop into a receptacle from which it
overflows slowly into the water in the boiler the result being that the impurities
are left behind in the receptacle and are blown off from time to time through a
mud cock.
The receptacle may either be a separate vessel fixed inside the boiler or may be
made by partitioning off a comparatively cool part of the water space of the
boiler. Preferably the steam space into which the water is sprayed is also divided
from the steam space proper of the boiler forming an upward prolongation of or
dome over the receptacle.
The receptacle may be divided by plates to cause the water to take a circuitous
course and therefore remain a considerable time in it before reaching the water
space proper.
Dated this 11th day of December 1893.
CARPMAEL & Co.,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Purifying and Heating the Feed Water of Steam
Boilers, and in Apparatus therefor.
We, JULES NICLAUSSB, and ALBERT NICLAUSSE, both of 24 Rue des
Ardeunes, Paris, in the Republic of France, Civil Engineers, 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 has for its object an arrangement for throwing down the deposits.
contained in the feed water of boilers away from the heating surfaces.
This arrangement is shown in the annexed drawings in which
Figure 1 shews the apparatus in section placed inside the boiler.
Figure 2 is a section at the end of the boiler.
Figure 3 shews a modification.
In the first two figures there is shown more particularly a portion of a reservoir
of our patented generator No. 1052".
It may be remarked that in raising water containing matters in suspension or
solution to a high temperature, these matters are precipitated.
If water containing these matters in suspension or in solution be employed for
feeding a steam boiler, the above mentioned principle applies that is to say these
matters are precipitated by bringing this water to a high temperature.
In all steam boilers, when the feed water is liable to produce deposits and
when it attains a certain temperature, these deposits are precipitated upon the
beating surfaces, thereby producing grave inconveniences which it is important to
avoid.

page_text: By virtue of the principle just explained we have invented an arrangement
allowing the deposits to be precipitated away from these surfaces, in a place easy
to clean and capable of containing a certain quantity without prejudice to the
working.
The arrangement consists of a receiver A, B, C, D, E, F, G, H, placed in a boiler.
It is generally circular but may be of any shape.
The upper portion A, B, C, D, E, is in the steam and the lower portion is in the
water in this boiler.
The upper portion is open at A, I so that the interior of this portion is in
communication with the steam.
The pipe T leads from a stop valve on the flow from a feeding pump and the
end of this tube is arranged in such manner that the feed water is sprayed at its
exit by giving to it a certain speed.
When the feed pump is in action spraying of the water is produced and an
intimate mixture is formed with the steam of the boiler, which steam penetrates
easily into the spaces A, B, C, D, E. A high temperature, that corresponding to
pressures of from 10 to 12 kilogrammes per square centimetre is desirable for
obtaining the best result.
This feed water thus treated throws down its deposits. The inner portion A,
B, C, D, E of the receiver is jacketted. Deposits falling at F, G, H, may be
blown off at the pipe M.
In order to prolong the reheating of the water and still more facilitate the
precipitation of the deposits before the descent of this water into the tubes we
place in the lower portion a partition I N the top of which is higher than the
normal level and its bottom a certain distance above the bottom of the receiver.
The water is thus obliged to pass under the partition before falling into the
boiler and the section of the passage is so calculated that the speed shall be small
so that it shall not carry the deposits with it.
We show a modification X, Y, Z which we may employ when required by the
nature of the water and which allows of increasing the heating of the water by
prolonging its stay in the receiver before its descent into the boiler. For this
purpose we place several similar partitions and cause the water to circulate slowly
to allow it whilst being thus heated to throw down its deposits.
In this modification the extraction by blowing off will by reason of the number
of cocks necessary be too complicated and the cleansing of each of the divisions
must be performed through an opening of any sort made in the boiler or in the
reservoir.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, without limiting ourselves
to the details of construction, we declare that what we claim is :-
1. The combination of a spray producer at the end of the feed pipe, a receptacle
beneath it and means for removing sediment from the receptacle substantially as
described.
2. Purifying and heating the feed water of steam boilers by spraying it in
the steam space and catching it in a receptacle in the water space substantially as
described.
3. Apparatus for purifying and heating the feed water of steam boilers
substantially as described and shown in the drawings.
Dated this 31st day of August 1894.
CARPMAEL & Co.,
Agents for the Applicants.