AN IMPROVED COMPOSITION FOR PREVENTING INCRUSTATION IN BOILERS
Year: 1881

page_text: LETTERS PATENT to Edmund Edwards, of the Firm of Edwards and Co.,
Patent Agents and Engineers, of 40, Southampton Buildings, Chancery Lane,
in the County of Middlesex, for an Invention of "AN IMPROVED COMPOSITION
FOR PREVENTING INCRUSTATION IN BOILERS." A communication from abroad
by Hugo Kolker, of Breslau, in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Edmund Edwards at the
Office of the Commissioners of Patents on the 2nd November 1881.
EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 40, Southampton Buildings, Chancery Lane, in the County of
Middlesex. "AN IMPROVED COMPOSITION FOR PREVENTING INCRUSTATION IN
BOILERS." [A communication from abroad by Hugo Kolker, of Breslau, in the
Empire of Germany.]
This Invention has for its object an improved composition to be used for
preventing incrustation or deposit in boilers.
In order to put the Invention in operation, I boil in any suitable vessel with
water the following materials, in about the following proportions, that is to
say :-
Catechu of Pegu
English white caustic soda of 60 to 62 per cent.
Dried granate-shell
-
-
-
55 pounds.
-
45 pounds.
-
3 pounds.
The boiling is continued until a homogeneous solution is obtained, which is then
filtered.
In this ley is then dissolved by boiling 50 pounds of dried and coarsely pulverized
chestnuts, and the composition for preventing incrustation is then complete and
ready for use.
This composition, added to the water of the steam generator or boiler in quantity
[Price 4d.]

page_text: which may be varied according to the qualtity of such water, produces the
following effects :-
The vegetable substances of the chestouts, viz., 37-76 per cent. of starch, 23 per
cent. of dextrin, 17-67 per cent. of sugar, 171 per cent. of fat, and 9 per cent. of
azotic substances, which, dissolved in alkaline ley, are decomposed and brought in
combination with tannic acid, exert a fermentative action, and form, with the lime-
salts of the feed-water in the boiler, amylates, which transform the sulphate of
lime and the other lime-salts of the feed water to carbonate of lime.
At the same time the lime-salts thus altered are separated by the fermentative
action of the solution of chestnuts in a muddy or gelatinous state.
•
By so doing the formation of incrustation or deposit of gypsum or sulphate of
lime is rendered impossible, all the lime-salts being reduced to a muddy or
gelatinous form,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edmund Edwards in the Great Seal Patent Office on the 2nd May
1882.
EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 40, Southampton Buildings, Chancery Lane, in the County of
Middlesex. "AN IMPROVED COMPOSITION FOR PREVENTING INCRUSTATION IN
BOILERS." A communication from abroad by Hugo Kolker, of Breslau, in the
Empire of Germany.
.
This Invention has for its object an improved composition to be used for the
purpose of preventing incrustation or deposit in boilers.
In order to put the Invention in operation I boil in any suitable vessel with
water the following materials, in about the following proportions, that is to
say:
Catechu of Pegu
English white caustic soda of 60 to 62 per cent.
Dried granate-shell
55 pounds.
-
45 pounds.
3 pounds.
The process of boiling is continued until a homogeneous solution is obtained,
which is then filtered.
In the ley thus obtained are then dissolved by boiling 50 pounds of dried and
coarsely pulverized chestnuts, and the composition for preventing incrustation or
deposit is then complete and ready for use.
The composition, prepared with the ingredients and in the manner described
added to the water of a steam generator or boiler, in quantity which may be
varied according to the quality of such water, produces the following effects
The vegetable substances of the chestnuts, viz., 37.76 per cent. of starch, 23 per
cent. of dextrin, 17.67 per cent. of sugar, 1-71 per cent. of fatty matter, and
9 per cent. of azotic substances, which, dissolved in alkaline ley, are decomposed
and brought in combination with tannic acid, exert a fermentative action, form
with the lime-salts of the feed-water in the boiler, amylates, which transform the
sulphate of lime and the other lime-salts of the feed water into carbonate of
lime.
At the same time the lime salts thus altered are separated by the fermentative
action of the solution of chestnuts in a muddy or gelatinous state.
By this means the formation of incrustation or deposit of gypsum or sulphate
of lime is rendered impossible, all the lime-salts being reduced to a muddy or
gelatinous form, in which state they are readily removed.
Having now described the Invention and the manner in which the same is to be
performed, I claim the improved composition for preventing incrustation in boilers,
prepared of the ingredients and in the manner substantially as described.
In witness whereof, I, the said Edmund Edwards, have hereunto set my
hand and seal, this 2nd day of May, in the year of our Lord 1882.
EDMUND EDWARDS (10)