method or and Apparatus for Treating Semi-liquid Substances with Purifying or other Liquids.
Year: 1885

page_text: method or and Apparatus for Treating Semi-liquid Substances
with Purifying or other Liquids.
I, EUGEN LANGEN of Cologne in the German Empire, Engineer, do hereby
declare the nature of my invention for "METHOD Or AND APPARATUS FOR
TREATING SEMI-LIQUID SUBSTANCES WITH PURIFYING OR OTHER LIQUIDS" to be
as follows:-
According to my present invention crystalline and other solid substances that
are capable of being suspended in a liquid so as to form a semi-liquid mass, are
treated with purifying or other liquids in successive stages in such a manner that
while the semi liquid mass is caused to travel from one stage to another in one
direction the liquid with which it is to be treated is caused to travel from stage
to stage in a contrary direction, the liquid being delivered onto and drawn through
the mass by suction or exhaust from below as it passes over a pervious or per-
forated surface at one stage, and the liquid thus drawn through being then
delivered onto that portion of the mass that is passing over the pervious surface
at the preceding stage, so that the liquid which has taken up the least amount of
impurities is made to act upon material from which the greater amount of impurities
has been removed, while the liquid which has taken up most impurities is made to
act upon material that still contains most of its impurities.
The apparatus which I employ by preference for carrying out this method of
operation is arranged as follows:-
A series of troughs arranged side by side have fitted into their openings hollow
drums or cylinders with pervious or perforated surfaces, which drums are made
to revolve continuously at a slow speed, the trough being provided with a scraper
on each side fitting closely against the surface of the drum. From each trough,
below the drum a pipe leads to a suction pump, the delivery pipe of which passes
up to a supply trough for liquid situated over the drum preceding that of which
the trough communicates with the pump.
At the one end of the series of troughs and drums is a receptacle in which the
solid material to be treated is incorporated with sufficient liquid to render it of
a semi liquid condition, in which it Hows on to the first drum of the series.
the other end of the series is a receptacle containing the pure liquid with which
the material is to be treated, and which is made to flow on to the last drum of the
.
At

page_text: series. Assuming the apparatus to be in full operation, the semi-liquid mass
flowing gradually along over the whole of the drums, then the pure liquid
flowing on to the mass passing over the last drum of the series will be drawn
through the same by the pump below and discharged by it into the supply trough
situated over the last drum but one of the series, whence it flows on to such drum
and is again drawn through the mass flowing over it by the last pump but one of
the series, which in its turn delivers it into the trough of the last drum but two,
and so on until the liquid which has successively passed through and taken up
the impurities of the material flowing over all the drums, is eventually discharged
by the first pump of the series' partly into the receptacle that is being charged
with the solid matter to be acted upon, in order by incorporation therewith to
render it of the requisite degree of fluidity while the remainder of the liquid is
conveyed away to wherever required.
At the same time the mass which at the last drum of the series has been
treated with pure liquid, is allowed to flow away in a more or less perfectly
purified condition.
ABEL & IMRAY,
Agents for the Applicant.

page_text: with Purifying or other Liquids.
I, EUGEN LANGEN of Cologne in the German Empire, 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 present invention relates to a method whereby crystalline and other solid
substances that are capable of being suspended in a liquid so as to form a semi-
liquid mass, are treated with purifying or other liquids in successive stages in such
a manner that while the semi liquid mass is caused to travel from one stage to
another in one direction the liquid with which it is to be treated is caused to travel
from stage to stage in a contrary direction, the liquid being delivered on to and
drawn through the mass by suction or exhaust from below as it passes over a
pervious or perforated surface at one stage, and the liquid thus drawn through
being then delivered on to that portion of the mass that is passing over the pervious
surface at the preceding stage, so that the liquid which has taken up the last
amount of impurities is made to act upon material from which the greater amount
of impurities has been removed, while the liquid which has taken up most impurities
is made to act upon material that still contains most of its impurities.
A construction of apparatus for carrying out this method of operating was
described in the specification to my patent No 10367 of 19 July 1884. According
to my present invention I employ for this purpose an improved construction of
such apparatus which I will proceed to describe with reference to the accompanying
drawing, in which Fig. 1 shews diagrammatically a longitudinal section of the
apparatus and Fig. a cross section.
The apparatus consists of the combination of several single apparatus of the
same construction, the number of which depends upon the condition in which it is
desired to obtain the two end products, namely the purified material and the liquid
employed.
Each apparatus consists of a hollow drum or cylinder A with perforated or sieve-
like surface revolving in a trough B between scrapers C, and a pump D for the
purifying liquid.
Above the apparatus, between each pair of cylinders, are arranged troughs or
receptacles F for the liquid.
The solid material to be treated (such as sugar) is mixed in an incorporating
vessel E at one end of the apparatus with the liquid which travels forward from
the other end of the apparatus.
The semi-liquid mass thus produced flows uniformly on to the first cylinder,
which, as also all the other cylinders, rotates so as to carry the mass that passes
on to it away from the incorporating vessel and onwards to the next cylinder, so
that it is thus conveyed from cylinder to cylinder along the whole apparatus.

page_text: Assuming the apparatus to be fully in action, that is to say, the whole of the
cylinders covered with the semi-liquid mass, and the pumps working, the action
will be as follows:-
The fresh purifying liquor is caused to flow from a supply pipe G into the last
liquor trough F and thence on to the space between the last cylinder A and the
last but one, and it is drawn by means of the last pump D (if necessary assisted
by an air pump) through the mass on the last cylinder into the trough below, and
thence it is conveyed through the pump D into the last liquor trough but one,
whence it flows on to and through the layer of mass upon the last cylinder but
one; the liquor is again drawn through this cylinder by the last pump but one (the
pumps being arranged in two parallel rows connected alternately with the cylinders
as shewn) and is thereby fed into the last trough but two, and so on. The above
operation is repeated at every apparatus, the first pump being caused to convey as
much of the liquor drawn off by it into the incorporating vessel by the pipe I
as is necessary to produce the required consistency of the semi-liquid mass, the
remainder of the liquor being conveyed to wherever required through the pipe H.
The treated or purified material is conveyed away from the last cylinder.
•
It will be evident that in place of employing pumps, any other means for
drawing off the liquor such as tubes acting on the principle of the barometer, may
be employed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The method of treating solid materials with liquids wherein the material is
caused to pass in a semi-liquid stratum successively over a series of hollow revolving
cylinders with pervious surfaces arranged side by side while the liquid with which
the material is to be treated flows upon it from the top and after being drawn
through it and through the one cylinder by suction acting in a trough below, is
. conveyed on to the mass passing over the preceding cylinder, so that the purifying
liquid, which is first introduced at one end of the apparatus is made to flow through
the same in the contrary direction to that in which the semi-liquid mass, introduced
at the other end of the machine is made to flow, whereby the liquid that has taken
up most impurities is made to act upon the mass still containing most impurities
and the converse substantially as herein described.
2. In the apparatus for acting upon semi-liquid material in the manner herein
set forth, the combination of the permeable cylinder A trough B scraper C pump D
and liquor troughs F, arranged and operating substantially as herein set forth.
Dated this 9th day of any 1005
ABEL & IMRAY,
Agents for the Applicant. 4