Improvements in Apparatus for Precipitating the Solid Particles of the Top-gases of a Blast-furnace from out of the Clear Water.
Year: 1898

page_text: Date of Application, 10th Aug., 1898
Complete Specification Left, 10th May, 1899-Accepted, 10th Aug., 1899
Improvements in Apparatus for Precipitating the Solid Particles of
the Top-gases of a Blast-furnace from out of the Clear Water.
I, GOTTFRIED ZSCHOCKE, of Kaiserslautern, Germany, 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 has reference to an apparatus, by which the water, used for
precipitating the solid particles contained in the top-gases of blast-furnaces, to
separated from the washed out solid particles, is then cleared and may be used
over again and again.
The apparatus principally consists of two compartments, a water compartment
and a compartment for receiving the mud or slime, between which a number of
filters are arranged. The slime compartment is provided at its upper end with a
cylindrical mantle in order to increase its capacity, and it can be shut off by
means of a throttle valve or a similar device, when cleaning of the apparatus is
called for. In order to effect this cleaning during the work, sufficient space is
left above the shut-off device within the cylindrical mantle to receive, during
the cleaning process, the accumulating solid and liquid particles. After
finishing the cleaning process, the shut-off device is opened again and the clearing
process goes on again in the usual way. The water, collecting in the water
compartment, fills this latter and is then conducted through pipes into a clarifier.
If the slime compartment is filled, a slide is opened and the slime is allowed to
drain off. A valve or shut-off plate, opening into the water compartment, is
opened and is turned aside with the aforesaid slide and a draining off pipe. Only
then the door, giving access to the slime compartment can be opened and allow
of the latter emptying itself.
Doted this Oth
T
Count 1000
Improvements in Apparatus for Precipitating the Solid Particles of
the Top-gases of a Blast-furnace from out of the Clear Water.
I, GOTTFRIED ZSCHOCKE, of Kaiserslautern, Germany, Engineer, do hereby
declare the nature of this invention and in what manner the same is to be
[Price 8d.1

page_text: performed, to be particularly described and ascertained in and by the following
statement: —
The present invention relates to an apparatus by means of which the water used
to precipitate and collect the solid particles of the exit gases from blast furnaces
can be drawn off from the said particles, filtered and used over again.
The invention is illustrated in the accompanying drawings in which―
Figure 1 shews a section of the apparatus at right angles to the front view
illustrated in Figure 2.
.
In these drawings A represents the wash-tower for the top gases, B a collecting
tank at the base thereof into which the wash water falls when the cover n is
closed. The wash water passes normally into the sloping cylindrical sediment
chamber where the slime deposited collects. This sediment chamber 6 has a
cylindrical upper part 61 in order to increase its capacity, which upper part can
be closed by turning the handle m causing the cover n to close it whenever
desirable for cleaning purposes.
In order that this cleansing may be undertaken during the operation of the
apparatus, there is provided above the closing device sufficient space in the
cylindrical tank B in order to allow the solid and fluid parts, collecting during
the period of the cleansing of the filter, to accumulate. The water and slime pass
down into where the solids are deposited. Rising through the filter H the water
collecting in the water chamber a fills this chamber and rises through the pipes c
from the said chamber into the run-off channel h. When the slime compartment
or sediment chamber 6 is filled the handle m is turned, the chamber b₁ closed from
use, the valve d on the run-off pipe f opened, and the liquid in a discharged into
the lower channel h.
The door e (to which valve d and pipe f are attached) is then swung open, and
the lower door g can then be opened so that the slime accumulated in 6 can be
discharged automatically into the channel h. The parts are then restored to the
position shewn in the drawing, and the filtration resumed.
The filter H may be constructed in any suitable manner, as for instance of a
sheet of felt between two perforated plates.
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
The improved apparatus for the purification of blast furnace gases in which
the solid particles separated from the said gases are collected by means of
permanent filters from the washing water, and are obtained in the form of solid
or pasty masses, substantially as set forth.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.