IMPROVEMENTS IN THE DISTILLATION OF COAL SO AS TO OBTAIN PRODUCTS THEREFROM
Year: 1882

page_text: .
LETTERS PATENT to William John Cooper of Westminster. Chambers
Westminster in the County of Middlesex Analytical Chemist for an
invention of "IMPROVEMENTS IN THE DISTILLATION OF COAL SO AS TO
OBTAIN PRODUCTS THEREFROM"
PROVISIONAL SPECIFICATION left by the said William John Cooper at the
Office of the Commissioners of Patents on the 2nd June 1882.
WILLIAM JOHN COOPER of Westminster Chambers Westminster in the County
of Middlesex Analytical Chemist " IMPROVEMENTS IN THE DISTILLATION OF
COAL SO AS TO OBTAIN PRODUCTS THEREFROM"
This Invention relates to Improvements in the Distillation of Coal and it consists
in adding thereto of such a proportion of Lime in the condition of Hydrate of Lime
or of Slacked Lime as shall when the mixture is subjected to distillation produce
amongst other products an increased quantity of Ammonia and of Ammoniacal
Products than is now obtained. To the Coal by preference when in a fine State of
division I add Lime in the form of Hydrate of Lime or of Slacked Lime, and I cause
the mixture to be well incorporated. The mixture thus prepared can be employed
either in Gas Retorts, Coke Ovens, or furnaces, and it will be found that when such
a mixture is employed for the production of illuminating gas a larger yield of
Ammonia and of Ammoniacal products will be obtained and that the illuminating
gas resulting will be found of increased purity.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William John Cooper in the Great Seal Patent Office on the
2nd December 1882.
WILLIAM JOHN COOPER of Westminster Chambers Westminster in the County
of Middlesex Analytical Chemist IMPROVEMENTS IN THE DISTILLATION OF COAL
SO AS TO OBTAIN PRODUCTS THEREFROM
وو
This Invention relates to Improvements in the distillation of Coal and it consists
in adding Lime in the condition of hydrate of lime or of slacked lime thereto of
such a proportion as shall when the mixture is subjected to distillation produce
among other products an increased quantity of ammonia and of ammoniacal products
than is now obtained.
To the Coal either in a lumpy condition (such as that in which coal is used in
gas making) or by preference in a state of fine division I add lime in the condition
of Hydrate of Lime or of slacked lime and I cause the mixture to be well
incorporated.
The mixture thus prepared can then be employed either in gas retorts, Coke
ovens, or furnaces
When I employ the mixture in gas retorts in gas works I find it convenient to
employ about half a hundred-weight of quick lime to every ton of coal and I slake
the lime with about its own weight of water whereby it is brought into such
condition as to be readily mixed with the coal.
The small coal or slack which has comparatively little commercial value as coal
is especially available for the purposes of my Invention.
Some of the advantages afforded by my Invention when it is applied in gas
works are: An increased yield of ammonia and ammoniacal products.
An increased yield of those compounds which impart illuminating power to gas
and consequently an increased yield of illuminating gas.
A diminution of the impurities in crude gas i.e. in gas as it issues from the
retort, and consequently a diminution of the cost of gas purification.
The resulting Coke is for certain purposes improved.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is :-
The Improvements in the distillation of coal in and for the manufacture and
production of coal gas or of illuminating gas consisting in the admixture and use
of lime in the form of hydrate of lime or of slacked lime with Coal substantially
in the manner and for the purposes hereinbefore mentioned.
In witness whereof I the said William John Cooper have to this my
Specification set my hand and seal the thirtieth day of November in the
year of our Lord One thousand eight hundred and eighty two