Improvements in Apparatus for the Extraction of Ammonia, applicable for Ammonia Soda Works and the like.
Year: 1891

page_text: Date of Application, 8th Aug., 1891
Complete Specification Left, 9th May, 1892-Accepted, 11th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for the Extraction of Ammonia,
applicable for Ammonia Soda Works and the like.
I, GEORGE ISAAC JAMES WELLS of Kinderton Lodge, Middlewich in the
County of Chester, Alkali Manufacturer do hereby declare the nature of this
invention to be as follows:-
In apparatus for distilling ammonia from the chloride of ammonium liquors of
ammonia soda manufacture and the like, in which an agitating device is used in
the distilling apparatus, the heater (which is the upper part of the apparatus for.
distilling off the ammonia by heat without the addition of lime) is connected with
the distilling apparatus by means of pipes. These pipes are very apt to choke up
and thus cause a stoppage to the distiller and heavy loss of time and labour in
taking them down and cleaning them out.
Further, the overflow pipes in the distilling apparatus are also liable to choke up,
in which case the apparatus has to be stopped for a lengthened period while these
pipes are cleaned out.
Now my invention is designed to overcome these evils. I drive the agitating
device of the distilling column from below and place the heater immediately above
the distilling column, so as to form to all appearance a single column of the two.
By this means the pipes are done away with entirely and there is abundance of
room for the liquors to descend and the gases to rise, and the priming which has
hitherto caused the pipes to choke is practically avoided, while any that does take
place is of no consequence as it simply falls back again.
In place of the present dip pipes, I form them slightly curved and sloping down
towards the horizontal diaphragm, terminating a little above the agitating device.
This pipe is flanged on the outside and attached by means of studs (on the column)
and nuts to the said column. To this outside flange, preferably by means of bolts
and a second flange, an elbow pipe is attached and this elbow pipe by further flanges
is attached to the expansion pipe, consequently, if a stoppage by any means takes
place, the elbow pipe is easily detached, the internal pipe with its external flange
withdrawn, another substituted and the original pipe or a fresh one placed in
position. The pipe or pipes which have been taken down can now be cleaned at
feisure.
The revolving agitators or mushrooms have hitherto been fastened on the vertical
shaft all in one piece and the internal parts are very difficult to clean without
taking to pieces the whole apparatus. By my invention, I propose to construct the
agitator in two sections, so that it can be easily disjointed and the internal parts
cleaned.
11
f
1001
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Extraction of Ammonia,
applicable for Ammonia Soda Works and the like.
I, GEORGE ISAAC JAMES WELLS of Kinderton Lodge, Middlewich in the
County of Chester, Alkali Manufacturer, 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 :-
In apparatus for distilling ammonia from the chloride of ammonium liquors of

page_text: ammonia soda manufacture and the like, in which an agitating device is used in the
distilling apparatus, the heater (which is the upper part of the apparatus for
distilling off the ammonia by heat without the addition of lime) is connected with
the distilling apparatus by means of pipes. These pipes are very apt to choke up
and thus cause a stoppage to the distiller and heavy loss of time and labour in
taking them down and cleaning them out.
Further, the overflow pipes in the distilling apparatus are also liable to choke
up, in which case the apparatus has to be stopped for a lengthened period while
these rines are atramed int
In these:-
A, is the branch for the pipe conveying the ammonium chloride to the heater;
B the pipe for carrying the ammonia gas to the coolers; C the milk of lime pipe;
D the overflow pipe from the lime section with the mechanical rhymer; the
overflow pipes the interchangeable dip pipes; these convey the ammonium
chloride liquor and the lime used for its decomposition through each compartment
consecutively, where it meets with an upward current of steam entering the bottom
of the still through pipe H, the liquor finally leaving the still being now freed of
ammonia through the waste liquor pipe G. M is an ordinary agitating device;
Theater upper part of distiller; J lower part of distiller; K K' two pipes
uniting the two parts of the distiller.
I drive the agitating devices G G¹ of the distilling column from below and place
the heater immediately above the upper part of the distilling column, so as to form
to all appearance a single column of the two. By this means, the pipes are done
away with entirely, and there is abundance of room for the liquors to descend and
the gases to rise, and the priming which has hitherto caused the pipes to choke is
practically avoided, while any that does take place is of no consequence, as it
simply falls back again.
In place of the present dip pipes, I form them slightly curved and sloping down
towards the horizontal diaphragm, terminating a little above the agitating device
as seen at E. This pipe is flanged on the outside and attached by means of studs
(on the column) and nuts to the said column. To this outside flange, preferably by
means of bolts and a second flange, an elbow pipe is attached and this elbow pipe,
by further flanges, is attached to the expansion pipe, consequently, if a stoppage by
any nieaus takes place, the elbow pipe is easily detached, the internal pipe with its
external flange withdrawn, another substituted, and the original pipe or a fresh one
placed in position. The pipe or pipes which have been taken down can now be
cleaned at leisure.
The revolving agitators or mushrooms have hitherto been fastened on the vertical
shaft all in one piece, and the internal parts are very difficult to clean without
taking to pieces the whole apparatus. By my invention, I propose to construct the
agitator in two sections, so that it can be easily disjointed and the internal parts
cleaned. In the top overflow pipe D, which is much more liable to stop up than
the others, fix a blade, scraper or rhymer on a spindle passing through a stuffing
box or its equivalent and provided with a screw thread and hand wheel, as shown,
so that it can be revolved and drawn in and out, and thus clean off any scale that
may form.
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 fixing of the heater on the top of the distiller instead of being a separate
part as previously, thereby dispensing with the connection pipes which were so
1

page_text: 2. Arranging the dip pipes in the manner described so as to be readily interchange-
able when dirty instead of being permanently fixed to the distilling column and
consequently most difficult to clean.
3. The revolving agitators or mushrooms fastened on the shaft of the distiller in
two sections instead of in one piece, thus affording splendid facility in cleaning both
the interior of this and the central gas pipe of the distiller.
Dated this 7th day of May 1892.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.