Improvements in Obtaining Ammonia and Hydrochloric Acid from Ammonium Chloride.
Year: 1886

page_text: Date of Application, 23rd Jan., 1886.
Complete Left, 23rd Oct., 1886.
Complete Accepted, 7th Jan., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Obtaining Ammonia and Hydrochloric Acid from
Ammonium Chloride.
1 LUDWIG MOND of Winnington Hall, near Northwich, Cheshire, Manufacturing
Chemist, do hereby declare the nature of this invention to be as follows:-
In my previous application for Patent No. 65 dated 2nd January 1886 for Improve-
inents in obtaining ammonia and hydrochloric acid from ammonium chloride I have
described a method for obtaining Ammonia and Hydrochloric acid from Ammonium
Chloride by the aid of protoxide of Nickel and other metallic oxides.
I now find that these oxides can be advantageously replaced by their combinations
with acids which are not volatile at the temperatures employed in my process, such as
silicic acid, phosphoric acid, boric acid, tungstic acid, antimonic acid, molybdic acid
and others or by a mixture or combination of these salts, or by a mixture or combina-
tion of these salts with the metallic oxides named in my previous application for
patent.
I find that employing these salts in place of the oxides the process can be completed
at a lower temperature, but otherwise it is carried out in exactly the same manner.
I also find that in addition to the salts of the acids mentioned with the oxides named
in my previous application for patent, the salts of these acids with the oxides of the
alkalies and of all the alkaline earths can with advantage be used.
W. P. THOMPSON & BOULT,
A gents.

page_text: Improvements in Obtaining Ammonia and Hydrochloric Acid from
Ammonium Chloride.
I, LUDWIG MOND of Winnington Hall, near Northwich Cheshire, Manufacturing
Chemist, 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 my previous application for Patent No. 65 dated 2nd January 1886 for "Improve-
ments in obtaining ammonia and hydrochloric acid from ammonium chloride, I have
described a method for obtaining ammonia and hydrochloric acid from ammonium
chloride by the aid of protoxide of nickel and other metallic oxides.
I now find that these oxides can be advantageously replaced by their combinations
with acids which are not volatile at the temperatures employed in my process, such
as silicic acid, phosphoric acid, boric acid, tungstic acid, antimonic acid, molybdic
acid and others, or by a mixture or combination of these salts, or by a mixture or
combination of those salts with the metallic oxides named in my previous application
for patent.
I find that employing these salts in place of the oxides, the process can be completed
at a lower temperature, but otherwise it is carried out in exactly the same manner.
I also find that in addition to these salts of the acids mentioned with the oxides
named in my previous application for patent, the salts of these acids with the oxides of
the alkalies, and of all the alkaline carths can with advantage be used.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
1st. The use or employment in obtaining ammonia from ammonium chloride in the
dry way, of one or more of the herein before described salts, either alone or in
combination with one or more of the metallic oxides specified for this purpose in my
specification No. 65 of 1886.
2nd. The use or employment of the solid residuum left after obtaining ammonia
from ammonium chloride through the medium of one or more of the salts or mixtures
of salts and oxides referred to in claim 1, for the obtaining of hydrochloric acid by the
treatment of the same at the requisite temperature with steam.
3rd. The use or employment of one or more of the herein described salts, either
alone or in combination with one or more of the metallic oxides specified for this
purpose in my specification No. 65 of 1886 in obtaining successively and repeatedly
ammonia and hydrochloric acid from solid ammonium chloride.
WM. P. THOMPSON & BOULT,
Of 6, Lord Street, Liverpool,
Agents.