Improvements in Apparatus for Washing Gases.
Year: 1895

page_text: Date of Application, 11th Mar., 1895-Accepted, 7th Mar., 1896
COMPLETE SPECIFICATION.
Improvements in Apparatus for Washing Gases.
I, PERCY FREDerick Holmes, of Whitestone Ironworks, Huddersfield, in the
County of York, Gas Engineer and Contractor, 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 relates to apparatus for washing combustible and other gases, of
the kind in which a number of discs, perforated or undulated or armed with brushes,
arranged on a horizontal shaft, revolve partly immersed in compartments of a vessel
charged with water or other washing liquid.
The chief object of my invention is so to construct and arrange the compartments
of the vessel and their communications that the washing liquid which becomes.
more and more impure towards the end of the vessel where the gas enters shall not
flow back so as to vitiate the more pure portions of the liquid towards the end
where the washed gas issues. For this purpose I construct a washing apparatus
as I shall describe referring to the accompanying drawing which is a longitudinal
section.
Within a cylindrical casing A. I mount a horizontal shaft B which passes through
stuffing boxes at the ends of the casing. The shaft may be arranged centrally in
the casing, but when it is desired to sweep the bottom of the casing it may be
mounted a little below the centre, as shewn in the drawing.
The casing A. is divided by a number of partitions C and D, between each pair
of which there is a revolving brush E.
The partitions have openings by which gas admitted at one end of the vessel as.
at a can pass through C outwards through one side of the brush, inwards through
the other side of the brush and out through D and so on successively through all
the compartments of the vessel of which there may be any desired number. The
lower parts F of the compartments between each pair of the partitions C and D.
and also the intermediate compartments G are occupied by the washing liquid
which is supplied at the end whence the gas issues and is discharged at the end
where the gas enters, flowing from compartment to compartment, the level at the
entering end being lowered by steps to that at the issuing end.
But each compartment F in which the brushes revolve and in which the liquid
is more or less agitated communicates with the compartment G not directly but.
through a weir H or its equivalent so that the compartment G from which the next
compartment in order is supplied at the bottom, remains comparatively still, and
operates as a kind of liquid seal preventing the more impure liquid on the left
from going back to mingle with the less impure on the right. The edges of the
holes through the partitions C and D are also armed with shields c d to catch spray
and direct it downwards.
In cases where the liquor is run off separately from each compartment, the
weirs H or their equivalents are dispensed with, and the level of the liquid may
be uniform throughout.
When, instead of brushes, plain, perforated, or corrugated discs are employed,.
the gas may be led radially inwards through one set of these and radially outwards
through another set. In these cases, however, I retain still compartments such as G
dividing the liquid in one compartment from that in the next so as to prevent.
their mixture as above described.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
In apparatus for washing gases, in combination with the successive compartments
containing liquid in which brushes or their equivalents revolve, intermediate
comparatively still compartments, substantially as and for the purpose set forth.
Dated this 11th day of March 1895.
ABEL & IMRAY,.
Agents for the Applicant.