Improvements in Apparatus for Revivifying Gas Lime (Sulphide of Caloium) and other Analogous Materials.
Year: 1892

page_text: Date of Application, 16th Mar., 1892
Complete Specification Left, 14th Dec., 1892--Accepted, 4th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Revivifying Gas Lime (Sulphide of
Caloium) and other Analogous Materials.
We, JOHN ARTHUR YEADON. of 4, Albion Place, Leeds, Engineer, and
WILLIAM ADGIE, of 68, St Mark Street, Leeds, Accountant, both in the County
of York, do hereby declare the nature of this invention to be as follows:-
Our present invention is connected with our previous Patent of November 29,
1889, No. 19183, as hereinafter described; and consists in the application or
combination of the above-mentioned Patent for a revolving retort, or any parts of
it, for the purpose of revivifying gas-lime (sulphide of calcium) which has been
used for the purpose of purifying gas or other analogous purposes; and by sub-
jecting such gas-lime to the action of heat by passing it through a revolving retort,
to eliminate the sulphuretted hydrogen or other materials which have been taken
up into it during the passage of gas through the pure or fresh lime, and which are
fixed or contained in the said gas-lime (sulphide of calcium); and which sul-
phuretted hydrogen or other materials can afterwards be converted by condensation
or other suitable methods into ammonia, sulphur, and other products; and after
such a process of separation, the lime becomes revivified and can be used again for
purifying gas or for other purposes; and the component parts of the sulphuretted
hydrogen can also be utilised if and as required.
gas-
In our present Specification, to avoid repetition, we shall use the term "
lime;" but we also include with it in this our invention any other analogous
materials used in the ordinary methods of purifying gas. We shall also use the
words "sulphuretted hydrogen," but also include with this term all the component
parts intended to be eliminated from the gas-lime to be revivified for using again
for purifying gas or other analogous purposes.
In our Patent of Nov. 29, 1889, No. 19183, as referred to above, we describe
our revolving retort, working with fixed and closed or gas-tight end plates or
mouthpieces for feeding and discharging; by means of which the coal can be
mechanically and continuously fed into and through the retort, where the coal is
distilled, the gas generated, and the cinders discharged, without any loss of gas or
admission of air. In our present invention, we propose to use this principle of our
revolving retort, with its continuous system of feeding and distillation, for passing
gas-lime (instead of coal) into and through the retort, where the sulphuretted
hydrogen is intended to be released or eliminated from the gas lime; so that the
latter, after being thus revivified and discharged from the retort, (in a way similar
to that used in our previous Patent for cinders from coal, or by any other suitable
means,) can be used again for purifying gas, or for any other purposes.
In carrying out our invention, we preferably take the gas-lime as it comes fresh
from the purifier after it has been used for purifying gas; if required, it can be
broken small with any ordinary crushing rolls, and delivered into a bunker or
hopper from which it may be arranged to fall direct, or to be raised and delivered
by hand or suitable elevators or other apparatus into the feed hoppers of one or
more revolving retorts. We also provide suitable arrangements for regulating the
supply of gas-lime into the retorts as required.
We feed the gas-lime into the retort by an arrangement similar to that described
in our previous Patent of Nov. 29, 1889, viz., an internal shaft fitted with worms
or adjustable blades working through the bottom of the feed hopper; the closeness
of the gas-lime as it is fed in, preventing any escape of gas or vapour that way.
The gas-lime falls upon the internal heated surface of the retort, where it is
constantly being broken up by the fixed internal blades; by this means, the

page_text: sulphuretted hydrogen is quickly released and eliminated, passing forward and out
through the ascension pipe in the ordinary way. The internal blades, along with
the conical shape of the retort, (or its angle of inclination when parallel retorts are
used) gradually work the gas-lime through the retort; and the revivified lime is
delivered at the outlet end into a suitable closed or gas-tight box, from which it
can be discharged as required by arrangement of valves or other suitable
mechanical arrangement without escape of gas or ingress of air. The revivified
lime can then be used again for purifying gas, or for other purposes as found most
suitable.
The sulphuretted hydrogen passes out through the ascension pipe, as in the
ordinary method of manufacturing gas; it can be conveyed forwards into a con-
denser or other suitable apparatus in which the ammonia, sulphur, and other
component parts can be extracted or separated as required for further use.
In applying our revolving retorts for this purpose, they may be heated by fire,
gas, gas and fire combined, or other means found most suitable. They can also be
worked with or without the addition of an exhauster for reducing the pressure of
eliminated sulphuretted hydrogen or other gases inside the retorts. They can be
made of metal, fireclay, or other materials; they can be constructed of a conical,
parallel, or other shape; and they may be set to work in a horizontal or inclined
position.
The size & number of the retorts can be regulated to suit the quantity of gas-
lime to be passed through them. Any suitable motive power can be applied for
driving or working the same; the whole process can thus be made continuous,
mechanical, & automatic; and we purpose carrying out our invention substantially
as above described.
Signed this Fifteenth day of March 1892.
JOHN ARTHUR YEADON.
WILLIAM ADGIE.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Revivifying Gas Lime (Sulphide of
Calcium) and other Analogous Materials.
We, JOHN ARTHUR YEADON, Engineer, of 4, Albion Place, Leeds, and
WILLIAM ADGIE, Accountant, of 29, Ash Grove, Hyde Park, Leeds, (formerly of
68, St. Mark Street Leeds) both in the County of York 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 :—
Our present invention is connected with our previous Patent of Nov. 29, 1889,
No. 19183, as hereinafter described; and consists in the application or combination
of the above mentioned Patent for a revolving retort or any parts of it, for the
purpose of revivifying gas-lime (sulphide of calcium) which has been used in the
process of purifying gas or other analogous purposes; and by subjecting such gas-
lime to the action of heat by passing it through a revolving retort, to eliminate the
sulphuretted hydrogen or other materials which have been absorbed or taken up
into it during the passage of gas through the pure or fresh hydrated lime, and
which are fixed or contained in the said gas lime; and which sulphuretted
hydrogen or other materials can afterwards be converted by condensation or other
suitable methods into ammonia, sulphur, and other products; and after such a
process of separation, the lime becomes revivified so that it can be used again for
purifying gas or other purposes; and the component parts of the sulphuretted
hydrogen can also be utilised if and as required.
gas-
In our present Specification, to avoid repetition, we shall use the term "
lime" only; but we also include in this our invention, the revivifying of any other
analogous materials which have been used in the ordinary methods of purifying
gas. "We shall also use the term "sulphuretted hydrogen," but also include in this

page_text: term all or any of the component parts intended to be eliminated from the gas-
lime to be revivified, preparatory to being used again for purifying gas, or other
analogous purposes.
In our Patent of Nov. 29, 1889, No. 19183, as referred to above, we describe our
revolving retort, working with fixed and closed or gas-tight end plates or mouth-
pieces for feeding and discharging; by means of which, the coal could be
mechanically and continuously fed into and through the retort where the coal is
distilled, the gas generated, and the cinders discharged without any loss of gas or
admission of air.
In our present invention we propose to use this principle of our revolving retort
with its continuous system of feeding and distillation, for passing gas-lime (instead
of coal) into and through the retort, where the sulphuretted hydrogen is intended
to be released or eliminated from the gas-lime; so that the latter, after being
thus revivified and discharged from the retort (in a way similar to that shown in
our previous Patent for cinders from coal, or by any other more suitable means)
can be used again for purifying gas, or for any other purposes.
In the accompanying drawing,
Fig. 1 represents a longitudinal section of the retort, and Fig. 2 the front
elevation of the same, where the revivified lime and sulphuretted hydrogen are
discharged.
In carrying out our invention, we preferably take the gas-lime as it comes fresh
from the purifiers, after it has been used for purifying the gas; if required it can
be broken small with any suitable crushing rolls and delivered into a bunker or
hopper, from which it may be arranged to fall direct, or to be raised by hand or
. suitable elevators or other apparatus into the feed hopper G, of one or more
revolving retorts. We provide suitable arrangements for regulating the supply of
the gas-lime into the retorts as required.
We feed the gas-lime into the retort by an arrangement similar to that described
in our previous Patent of Nov. 29, 1889, namely,. by the internal shaft I fitted with
worms or adjustable blades c, c, c, c, working through the bottom of the feed
hopper G and the internal pipe H; the closeness of the gas-lime as it is fed in,
preventing any escape of the gas or other vapour that way.
The gas-lime falls upon the internal surface of the retort A, where it is
constantly being broken up by the fixed internal blades b, b, b; by this means the
sulphuretted hydrogen is quickly released and eliminated, and passes out through
the ascension pipe T in the ordinary way to the condenser or out into a
chimney.
The action of these internal blades b, b, b, along with the conical shape of the
retort (or its angle of inclination when parallel retorts are used) gradually work
the gas-lime through the retort; and the revivified lime is delivered at the outlet
end into the box U which is fitted with internal shaft V having adjustable blades
as shown, for forcing the revivified lime forward through the outlet pipe W, which
is preferably made taper and smallest at the outlet end so as to secure its being
filled with the revivified lime and so preventing escape of gases or ingress of air.
The revivified lime can then be used again for purifying gas, or for other purposes
as found most suitable.
The eliminated sulphuretted hydrogen passes out through the ascension pipe T
as in the ordinary method of manufacturing gas; it can be conveyed forward into
a condenser or other suitable apparatus, in which the ammonia, sulphur, and
other component parts can be separated or extracted as required for further use.
In applying our revolving retorts for this purpose they may be heated by fire or
gas, as found most suitable. They can be worked with or without the addition of
an exhauster for reducing the pressure of the eliminated sulphuretted hydrogen or
other gases inside the retort.
We preferably make our retorts of metal as shown in the drawing; but they can
also be made, if required, of fireclay, or other suitable materials. We also
preferably make them of a conical shape, and set to revolve as shown in the

page_text: drawing; but they may also be made parallel or of other shapes, and set to work
in a horizontal position (as shown) or inclined if desired.
The size and number of these retorts can be regulated to suit the quantity of
gas-lime to be revivified. They can be driven by gearing as shown; any motive
power can be applied for working one or more retorts; the whole process can thus
be made continuous, mechanical, & automatic; & we purpose carrying out our
invention substantially as above described.
Having now therefore described and particularly ascertained the nature of our
invention & in what manner the same is to be performed, we declare that what
we claim is:—
1. The use or application of a revolving retort for the revivifying of gas-lime
(viz., sulphide of calcium):-
:-
2. The use or combination of the above or any parts of it, having closed and gas-
tight ends and other fittings, for the purpose of utilising the eliminated
sulphuretted hydrogen.
Dated this with day of December 1800
JOHN ARTHUR YEADON.
WILLIAM ADGIE.
JOHN ARTHUR YEADON.
WILLIAM ADGIE.