Improvements in Separating Fat, Grease, and other Impurities from Feed Water of Steam Boilers, and other Water.
Year: 1893

page_text: Date of Application, 9th Oct., 1893-Accepted, 11th Nov., 1893
COMPLETE SPECIFICATION.
Improvements in Separating Fat, Grease, and other Impurities from
Feed Water of Steam Boilers, and other Water.
I, JEAN ADOLF DRAKENBERG of 73 Nybrogatan, Stockholm, Sweden
Consulting 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 :—
My invention applies to the mode of and apparatus for separating fat and grease
patented by me No. 2095-11890, or to similar apparatus.
My previously patented process accomplishes the object of separating to a very
large extent fat and grease from the feed water of steam boilers, but it has usually
the disadvantage of drawing off a certain quantity of water with the fat and grease
separated; the water and grease, in the apparatus I formerly employed was under
the full pressure of the steam in the boiler, and I find that it is practically
impossible fully to extract the grease without letting out water with it, and
therefore when the water and grease are allowed to issue from the apparatus the
effect produced is that in some degree a recombination takes place, consisting
of extremely minute particles of grease suspended in the water, or extremely
minute particles of water suspended in the grease, or both, so that in
degree in a part at least of the extract what is called an emulsion is produced
which is neither pure water nor pure grease. Now I by my present invention run
the skimmings produced by my previously patented separator into a second tank
where settlement can take place, and I may either run these skimmings into the
second tank in such a way as to produce therein a rapid circular motion of the
contents of the tank as in my previous Patent, and so may assist the separation in
the second tank by centrifugal action, or I may allow the separation to occur by
gravity alone.
I provide a drain cock and pipe in my subsidiary separator or
second tank, so as to run the separated water after settlement or separation into
the hot well, and the tank may be open at the top for the removal of the grease,
or it may be supplied with a pipe and cock for running off the separated grease or
both means may be used.
In the drawing hereto attached is shewn one form of my previously patented
separator in which A. is the inlet from the feed pumps, B. is the turbine mouth-
piece, D. is the outlet to the boiler, E. is the gauge glass, F. a drain cock, and
G. the scum and air pipe, by which a certain portion of air, grease, and water are
discharged under the circumstances of disadvantage to which I have already
referred.
By my present invention I provide a tank H. into which the pipe G. discharges
as shewn and to which the skimmings may be supplied either through a turbine
nozzle or in such other way as to impart a rapid circular motion; or they may be
supplied through orifices in a pipe to near the level of the surface of the contents
of the tank as shewn in the drawing, in such a way as not to impart much motion
to the contents but especially to avoid imparting motion to, or mixing with the
water at the bottom of my subsidiary settling tank. K is a pipe leading to the
hotwell whereby the water taken off by the separator is separated from the oil
mixed with it and preserved, for use in the engine. The tank H. may
either be fixed directly to the barrel of the feed cleaner, or apart from it as
shewn.
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
caim is :-
:-
The use of a subsidiary senarator in combination with my previously patented

page_text: apparatus or similar apparatus, substantially as described, for the more perfect
separation of fat, grease, and other impurities from water for steam boiler
feeding.
Date :
Le 1802
J. JAMESON,
Agent for Applicant.