IMPROVEMENTS IN APPARATUS FOR AERATING OR OXIDISING LIQUIDS
Year: 1884

page_text: PROVIDED
We, JAMES MAC ILWRAITHI, of 182 Hope Street, Glasgow, in the County of
Lanark, Manufacturer, and TпомAS THOMSON, of Barrhead, in the County of
Renfrew, Chemist, do hereby declare the nature of our said Invention for
'IMPROVEMENTS IN APPARATUS FOR AERATING OR OXIDISING LIQUIDS," to be as
follows:-
"
This Invention relates to improvements in the construction of apparatus to be
used for agitating, and forcing air into, liquid substances or solutions for the
purpose of nerating or oxidising such substances or solutions.
The improved apparatus in which the liquids aro treated, consists of a covered
or open tank or vessel which is fitted with one or more partitions placed either
vertically or horizontally, and extending only part of the length or breadth of the
vossel, so that open channels are formed round the partitions in which the liquid
may circulate. A beating paddle or wheel with radial or fau-liko blades, is fitted
on a rotating shaft across one of the channels or in each channel, and is partially
immersed in the liquid. The wheel or paddle is rapidly rotated, so that the blades
churn up the liquid in the tank or vessel, and cause it to circulate round the
channels. Air is admitted at any convenient point in proximity to the rotating
paddle, and is forced by the blades into the liquid, and an outlet is provided at the
end of the vessel for the exhausted air or vapours arising from the liquid.
In treating oils or similar liquid substances which require to be boiled or heated
while being aerated, the tank or vessel is arranged over a fire or hot flue, or is
double cased and heated by steam.

page_text: WC JAMES MAC ILWRAITII, of 182 Hope Street,' Glasgow, in the county of
Lanark, Manufacturer, and TIOMAS THOMSON of Barrhead, in the county of
Renfrew, Chemist, do hereby declare the nature of our said Invention for
"IMPROVEMENTS IN APPARATUS FOR AERATING OR OXIDISING LIQUIDS," and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This Invention relates to improvements in the construction of apparatus to be
used for agitating, and forcing air into, liquid substances or solutions for the
purpose of aerating or oxidising such substances or solutions.
In the accompanying drawings figure 1 is a longitudinal vertical section ;
figuro 2 is a transverse vertical section; and figure 3 is a plan of one modification
of the improved apparatus we employ for aerating or oxidising liquids.
The improved apparatus in which the liquids are treated consists of a covered or
open tank or vessel A which is fitted with one or more partitions B placed either
vertically as shown or horizontally, and extending only part of the length or
-breadth of the vessel -so-that-open-channels-0-(which may-be-made-adjustable-as
to size) are formed round the partitions in which the liquid may circulate, such
channels being by preference under the lovel of the liquid. A beating paddle or
wheel D with radial or fan-like blades is fitted on a rotating shaft E across one of
Lho channels or in cach channel, and is partially immersed in the liquid, the depth
of immersion being preferably to about the centre of the paddle. Each wheel or
paddle D is rapidly rotated, so that the blades churn up the liquid in the tank or
vessel, and cause it to circulate round the channels C. Air is admitted by an
inlet pipe F at any convenient point in proximity to the rotating paddle, and
is forced by the blades in the liquid, and an outlet G is provided at the end
of each compartment of the vessel for the exhausted air or vapours rising from
the liquid.
In treating oils or other liquid substances which require to be boiled or heated
while being acrated, the tank or vessel is either arranged over a fire or hot flue, or
is formed with a double casing H heated by steam which enters at one end and
escapes at the other through pipes I. I.
When the tank is covered as shown, doors J are formed in the cover for giving
access to the paddles, and for filling the tank. A draw off cock K is provided.
The paddles Dare rotated by means of belts and pulleys in opposite directions,
but so as to create a continuous circulation of the liquid in one direction. The air
however that enters one compartiment of the tank, and is beat by the paddle into
the liquid in that compartiment is not permitted to pass into the adjacent channel
but escapes by the outlet pipe, tho passage for the liquid being by the chaunels C
formed at the ends of the partition below the level of the liquid. The number and
position of the rotating paddles inay be varied.
The improved apparatus is found in practice to be very suitable for oxidising
such substances as yellow liquor from alkali works manganese sludge and sulphite
of ammonia, and for aerating sewage, for ageing spirits, and for other purposes in
which oxidation is effected by intermingling of air with the liquids or liquid
solutions,

page_text: Having now particularly described and ascertained the nature of our said
Invention, and in what manner the saine is to be performed, we declare that what
we claim is,―
The
improved construction of apparatus for aerating or oxidising liquids,
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the saine is to be performed, we declare that what
we claim is,
-
The improved construction of apparatus for aerating or oxidising liquids,
substantially as herein set forth.
5004
JAMES MAC ILWRAITH.
THOMAS THOMSON.