Year: 1899

page_text: I, EDWARD THEISEN, of Yburgstrasse 1, Baden-Baden, Germany, Engineer, do
hereby declare the nature of this invention to be as follows:-
It was shewn in Specification No. 27,389 of 1898 that by arranging the rotat-
ing cylinder of a gas washer horizontally a more advantageous supply of the
washing water can be effected than when it is placed vertically; the horizontal
position has also great inherent advantages in large installations of the
apparatus.
At the same time the horizontal form favours the pulverisation and evapora-
tion of the liquid in the whole of the space through which the gas passes and
security against the danger of explosion is attained.
By the present invention the cylinder of the horizontal gas washer is im-
mersed to a small depth in water contained in a trough which extends along
the whole length of the lower surface of the cylinder or along a considerable
part thereof. At the immersed part the cylinder is provided with openings
so that the water may pass into the interior of the drum.
The water or other liquid absorbent thus admitted into the apparatus is
immediately whipped up by the rotating blades and is carried round and thrown
thereby upon the inner surface of the drum which is covered with wire or the
like. Near the inlet opening and separated from it by a partition which does
not extend to the bottom of the water trough, there are exit openings in the
drum through which the washing water, after it has been scattered over the
whole periphery of the drum, can pass away to flow, after depositing the parti-
cles it carries with it, under the aforesaid partition to the inlet openings.
While in this way a good access of water is provided for the external cylinder
a second such is provided for the inner rotating cylinder. With this cylinder
rotates a system of tubes the separate members of which terminate in sprinklers
turned towards the surface of inner rotating cylinder. The liquid sprayed from
these tubes issues on to the inner cylinder and is immediately scattered in the
form of water dust and thus partly evaporated in the space between the two
cylinders.
Fig. 1 is a longitudinal section, and Fig. 2 a transverse section of apparatus
according to my invention.
A is the stationary cylinder, into which the gas to be purified enters at a.
In this cylinder rotates the cylinder B to the outer surface of which are fixed
suitable blades b. The inside surface of the cylinder A is covered with wire
gauze C or with some other suitable layer the purpose of which is to spread
out and scatter the liquid so as to expose a large surface of it. This cylinder
has openings c which dip under the surface of water on one side of the parti-
tion E in the trough D, so that the surface of the water is just within the
cylinder. The different troughs D may hold different liquids if necessary.

page_text: dare similar openings, close to the openings c, and serve as exits for the water
from the cylinder.
The water which enters at c is whipped up by the blades b on the rotating
cylinder B and is pulverised and evaporated. Through the tubes F¹ FF3
washing or absorbing liquids are supplied to the chambers f f f of the rotat-
ing cylinder B; such liquids may be of different kinds, in different proportions
and at different temperatures.
From these chambers spring pipes G1, G2, G3, which end at various parts of
the cylinder periphery in sprinklers 2-preferably closed by ball valves
the balls of which are pressed on their seats by centrifugal force which however
is somewhat less than the pressure of the liquid flowing through the pipe. The
liquid is ejected radially into the space between the cylinders A and B from
these sprinklers, which rotate with the inner cylinder B.
The flow of liquid through these sprinklers can be so arranged that it is
smaller through 1 or 2 than through ; in this way the supply from the two
first may be evaporated by the heat of the entering gas, while that from the
third is sufficient to condense the vapour together with impurities.
At the outlet for the gas the cylinder A is enlarged to form a chamber M
across which the wire gauze C extends. This constitutes a drying chamber;
for the liquid collects behind the wire gauze and the gas cannot take it up
again.
The openings of the cylinder A to the water troughs diminish the danger of
explosion in dealing with the gas, as if such occur the expanding gas has an
putlet through these openings.
ABEL & IMRAY,
Agents for the Applicant.
I, EDWARD THEISEN, of Yburgstrasse 1, Baden-Baden, 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 follow-
ing statement:-
In constructing apparatus such as described in Specification No. 27,389 of
1898, I have found that by arranging the rotating cylinder of a gas washer
horizontally, a more advantageous supply of the washing water can be effected
than when it is placed vertically; the horizontal position has also great inherent
advantages in large installations of the apparatus.
At the same time the horizontal form favours the pulverisation and evapora-
tion of the liquid in the whole of the space through which the gas passes and
security against the danger of explosion is attained.
By the present invention the cylinder of the horizontal gas washer is im-
mersed to a small depth in water contained in a trough which extends along
the whole length of the lower surface of the cylinder or along a considerable
part thereof.
At the immersed part the cylinder is provided with openings
so that the water may pass into the interior of the drum.
The water or other liquid absorbent thus admitted into the apparatus is
immediately whipped up by the rotating blades and is carried round and thrown
thereby upon the inner surface of the drum which is covered with wire or the
like. Near the inlet opening and separated from it by a partition which does
not extend to the bottom of the water trough, there are exit openings in the

page_text: drum through which the washing water, after it has been scattered over the
whole periphery of the drum, can pass away to flow, after depositing the parti-
cles it carries with it, under the aforesaid partition to the inlet openings.
While in this way a good access of water is provided for the external cylinder
a second such is provided for the inner rotating cylinder. With this cylinder
rotates a system of tubes the separate members of which terminate in sprinklers
turned towards the surface of inner rotating cylinder. The liquid sprayed from
these tubes issues on to the inner cylinder and is immediately scattered in the
form of water dust and thus partly evaporated in the space between the two
cylinders.
Fig. 1 of the drawings accompanying my Provisional Specification is a longi-
tudinal section, and Fig. 2 a transverse section of apparatus according to my
invention.
A is the stationary cylinder, into which the gas to be purified enters at a.
In this cylinder rotates the cylinder B, to the outer surface of which are fixed
suitable blades b. The inside surface of the cylinder A is covered with wire
gauze Cor with some other suitable layer the purpose of which is to spread
out and scatter the liquid so as to expose a large surface of it. This cylinder
has openingse which dip under the surface of water on one side of the parti-
tion E in the trough 1), so that the surface of the water is just within the
cylinder. The different troughs 1) may hold different liquids if necessary.
d are similar openings, close to the openings c, and serve as exits for the water
from the cylinder.
The water which enters at e is whipped up by the blades on the rotating
cylinder B and is pulverised and evaporated. Through the tubes F1 F2 F
washing or absorbing liquids are supplied to the chambers f f f of the rotat-
ing cylinder B; such liquids may be of different kinds, in different proportions
and at different temperatures.
From these chambers spring pipes G₁ G² G³ which end at various parts of
the cylinder periphery in sprinklers h³, preferably closed by ball valves
the balls of which are pressed on their seats by centrifugal force which however
is somewhat less than the pressure of the liquid flowing through the pipe. The
liquid is ejected radially into the space between the cylinders A and B from
these sprinklers, which rotate with the inner cylinder B.
The flow of liquid through these sprinklers can be so arranged that it is
smaller through or 2 than through in this way the supply from the two
first may be evaporated by the heat of the entering gas, while that from the
third is sufficient to condense the vapour together with impurities.
By this means the aqueous vapour or steam produced at the part of the
apparatus where the gases to be purified or washed enter, in being caused by
the centrifugal action of the blades b to be brought into very intimate contact
with even the finest particles of dust in the gases, will effectually envelope
and lay hold of these, so that on being then subject to the action of the water
spray in the other part of the apparatus the condensation of such vapours will
also cause such fine dust particles to be completely separated from the gases.
At the outlet for the gas the cylinder A is enlarged to form a chamber M
across which the wire gauze C extends. This constitutes a drying chamber;
for the liquid collects behind the wire gauze and the gas cannot take it up
again.
The openings of the cylinder A to the water troughs diminish the danger of
explosion in dealing with the gas, as if such occur the expanding gas has an
outlet through these openings.
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-
-
1 Apparatus for washing gases wherein a horizontal drum with vanes or

page_text: blades is made to revolve within a fixed cylindrical casing the lower side of
which has openings and dips into one or more tanks containing liquid, so that
as the drum revolves it whips up the liquid from the tank or tanks, carrying it
round in the form of spray in the space through which the gases to be purified
are made to pass, the liquid so carried round being then expelled through
other openings in the casing together with the impurities taken up from the
gases, substantially as described.
2. In combination with apparatus such as is referred to in the First Claim,
the use of sprinklers or spraying devices revolving with the drum and supplied
with liquid so that such liquid in the form of spray is made to act upon the
gases to be purified substantially as described.
3. In apparatus such as is referred to in the First and Second Claims regu-
lating the supply of liquid at the inlet end of the apparatus in such manner
that such liquid is more or less evaporated by the heat of the entering gases to
be purified, the vapour or steam thus produced being condensed by the action
of the liquid spray in the other part of the apparatus substantially as and for
the purpose described.
4. In apparatus such as is referred to in the First Claim arranging the tank
from which the revolving drum takes up the liquid in such manner that the
liquid is discharged into it again after being carried round by the drum so
that the solid impurities discharged with the liquid can settle in the tank,
substantially as described.
Dated this 2nd day of May 1900.
ABEL & IMRAY,
Agents for the Applicant.