Improvements in Filtering and Purifying Hydrocarbon Gases and Filtering Bodies therefor.
Year: 1899

page_text: Date of Application, 25th July, 1899
Complete Specification Left, 25th Apr., 1900-Accepted, 23rd June, 1900
ICATION.
Improvements in Filtering and Purifying Hydrocarbon Gases
and Filtering Bodies therefor.
。
I, JOHN HENRY EXLEY, Engineer, of Littlewood's Buildings, Huddersfield,
in the County of York, do hereby declare the nature of this invention to be as
follows:
According to this invention hydrocarbon gases are filtered by causing or allow-
ing them to pass through a porous earthenware body formed by burning in a kiln
or otherwise an intimate or kneaded mixture of a suitable earth such as porce-
lain or common clay, steatite or the like and granulated or subdivided combustible
material such as bran, saw-dust or similar light combustible material, such mix-
ture being moulded into any desired shape for use.
A porous body made as described serves as a very efficient filtering medium
for breaking up and removing impurities from coal tar, benzine vapours and
other impurities from coal gas, acetylene and other hydrocarbon gases and
thereby reducing the tendancy of such gas to burn with a smoky flame when
burned with an ordinary burner. Such a porous earthenware body on account
of its absorbent nature also serves to effectually remove any moisture there may
be in the gas and so dry the same.
lene as it serves to remove therefrom any suspended solid matter carried away
It is especially suitable for filtering acety-
from the calcium carbide from which the acetylene is generated, and also
moisture due to contact of the gas with the water used to decompose the carbide.
As a further medium for purification and drying of acetylene or other
hydrocarbon gases the porous earthenware may be saturated with sulphuric,
hydrochloric, or other suitable acids so that the gas in forcing its way through
he porous material is split into numerous streams and is thus brought into inti-
nate contact with the acid which not only absorbs the ammonia and moisture
ut a large proportion of other impurities which may be present.
Dated this 24th day of July 1899
ements in Filtering and Purifying Hydrocarbon Gases
and Filtering Bodies therefor.
I, JOHN HENRY EXLEY, Engineer, of Littlewood's Buildings, Huddersfield,
n the County of York, do hereby declare the nature of this invention and in what
[Price 8d.]

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
According to this invention hydrocarbon gases are filtered by causing or allow-
ing them to pass through a porous earthenware body formed by burning in a kiln
or otherwise an intimate or kneaded mixture of a suitable earth such as porce-
lain or common clay, steatite or the like and granulated or subdivided combustible
material, such mixture being moulded into any desired shape for use.
This porous earthenware body can be made by a mixture of finely divided saw-
dust, bran, flour, or other combustible material with porcelain, common clay,
steatite, or other suitable earth, this mixture when subjected to the action of
burning in a kiln has the effect of destroying to a more or less extent the com-
bustible material that has been intimately mixed with the earth as described.
The proportion of combustible material introduced and mixed with the earth
can be regulated more or less according to the porous nature of body required.
A porous body made as described serves as a very efficient filtering medium
for breaking up and removing impurities such as coal tar, benzine vapours and
other impurities from coal gas, acetylene and other hydrocarbon gases and
thereby reducing the tendancy of such gas to burn with a smoky flame when
burnt with an ordinary burner. Such a porous earthenware body on account
of its absorbent nature also serves to effectually remove any moisture there may
be in the gas and so dry the same. It is especially suitable for filtering acety-
lene as it serves to remove therefrom any suspended solid matter carried away
from the calcium carbide from which the acetylene is generated, and also
moisture due to contact of the gas with the water used to decompose the carbide.
As a further medium for purification and drying of acetylene, coal gas or other
hydrocarbon gases the porous earthenware may be saturated with sulphuric,
hydrochloric or other suitable acids so that the gas in forcing its way through
the porous material is split into numerous streams and is thus brought into inti-
mate contact with the acid which not only absorbs the ammonia and moisture
but a large proportion of other impurities which may be present.
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:
1. The application and use of a porous earthenware made by an admixture of
clay, porcelain or other suitable earth with a finely divided combustible material
as a means of scrubbing, filtering, drying and purifying of hydrocarbon gases.
2. The passing or percolation of hydrocarbon gases through a porous earthen-
ware as a means of scrubbing, filtering, drying and purifying the gases.
3. The passing or percolation of hydrocarbon gases through a porous earthen-
ware saturated with a suitable acid or acids as an improved method of purifying
the gases.
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