Improvements in Treating Coal or Carbonaceous Minerals for the Obtainment of Ammonia and other Products.
Year: 1894

page_text: PROVIDIUNAL DIETTUATION.
Improvements in Treating Coal or Carbonaceous Minerals for the
Obtainment of Ammonia and other Products.
1, JAMES MEIKLE, of 342, Gairbrad Street, Maryhill, in the County of
Glasgow, North Britain, Technical Chemist, do hereby declare the nature of this
invention to be as follows, that is to say.
--
My said invention has principally for its object the obtaining of an increased
yield of ammonia in connection with processes in which coal and other carbonaceous
minerals are subjected to distillation.
in carrying out my invention according to oue modification when dealing with
coal, I first distil off the volatile constituents in a retort or other suitable externally
heated vessel; and next, continuing to maintain the residuary coke at a high
temperature, inject superheated steam into the retort or vessel, and thereby
obtain a large quantity of ammonia. When, after a time the evolution of
ammonia decreases I inject along with the superheated steam fire gases, that is the
gaseous products of combustion, by preference using such gaseous products as ané
forined by the combustion of produces gas The fire gases may be introduced by
the jet action of the steam, or by suitable blowing apparatus.
Instead of first introducing superheated steam by itself aud at a later stage
combining fire gases therewith, the super heated steam may have fire gases combined
with it at the commencement of its use.
The use of the fire gases produces a considerable additional yield of ammonia,
which has mixed with it other products including cyanogen compounds which can
be separated by known means and be separately utilised. The proportions of the
different products will probably depend on the proportions of the superheated steam
and bre gases employed.
Dated this Twenty-seventh day of December 1894
EDMUND HUNT,
Applicant's Agent
COMPLETE SPECIFICATION.
Improvements in Treating Coal or Carbonaceous Minerals for the
Obtainment of Ammonia and other Products.
1, JAMES MEIKLE, of 342, Gairbiaid Street, Maiy hill, in the County of
Glasgow, North Britain, Technical Chemist, do hereby declare the nature of
this invention and in what manner the same 18 to be performed, to be particularly
described and ascertained in and by the following statement, that is to say
-
My said invention has principally for its object the obtaining of an increased
yield of ammonia in connection with processes in which coal and other carbonaceous
minerals are subjected to distillation.
In canying out my invention according to one modification when dealing with
coal, fist distil off the volatile constituents in a retort or other suitable externally
FDQ)

page_text: heated vessel; and next, continuing to maintain the residuary coke at a high
temperature, I inject superheated steam into the retort or vessel, and thereby
obtain a large quantity of ammonia, When, after a time the evolution of ammonia
decreases I inject along with the superheated steam fire gases, that is the gaseous
products of combustion, by preference using such gascous products as are formed
by the combustion of producer gas. The fine gases may be introduced by the Jet
action of the steam, or by suitable blowing apparatus.
Instead of first introducing superheated steam by itself and at a later stage
combining fire gases therewith, the superheated steam may have fire gases combined
with it at the commencement of its use.
The use of the fire gases in conjunction with superheated steam produces a
considerable additional yield of aminonia, which has mixed with it other products
including cyanogen compounds which can be separated by known means and be
separately utilised. The proportions of the different products will probably depend
on the proportions of the superheated steam and fire gases employed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
'
In treating coal or carbonaceous minerals for the obtainment of ammonia and
other products, maintaining the residuary coke (produced by distilling off the
volatile constituents of the coal or carbonaceous minerals in a retort or vessel) at a
high temperature and injecting superheated steam and fire gasus substantially as
hereinbefore described.
Dated this Twenty-sixth day of September 1895.
EDMUND HUNT,
Applicant's Agent.