St. Paul daily globe. [volume] (Saint Paul, Minn.) 1884-1896, 1893-06-16
NO MORE SMOKE.
The New System by Which Every
Atom OF Fuel Is Consumed.

The New System by Which Every
Atom OF Fuel Is Consumed.
According to the Berlin correspon-
dent of the London Standard, the prob
lem of smokeless combustion of coal
seems at last to be solved by a newly
patented process which is exciting an
immense sensation in Germany. The
patent has been taken out by COM
pany, which has already made contracts
with large number of commercial and
industrial concernS-among others with
the North German Lloyd, the Ham burg
American Packet company, Schichau
and the Vulcan works at Stettin-for
the introduction of its new system of
firing.
In the construction of their new firing
apparatus, the. patentees hava departed
from all the methods hitherto EN-
ployed. The coal is no longer burned
in Jumps, but is reduced to powder by
means OF the ordinary centrifugal mills.
The new system, which is called auto
matte and smokeless coal-dust firing"
is extremely simple. AT the place
where hitherto the coal was introduced
into the fire CRATE, that is to say, at the
furnace door. there is movable pear
shaped apparatus, consisting principally
of fire chamber lined with fire brick.
One aperture of this hollow pear opens,
in the direction OF the axis of the boiler,
into the mouth of the hitherto employed
furnace, from which the fire CRATES, fire
bridges, ETC., have been removed. The
opposite aperture OF the hollow pear is
intended to. admit current of air. BY
means OF an ingenious automatic
afrtx Tod
funnel placed above the current of
air, is continually conveyed into the
current of air and thence into the fire
chamber, where it is Immediately
brought into combustion by means of
the small fire which is placed there.
When this has once taken place the
coal dust conveyed by the current of air
continues to burn in one regular. in
tense flame. The current of air which
brings the coal dust into the apparatus
is regulated so as merely to convey the
dust thither. whereas the further supply
OF air necessary for combustion is sent
into the zone of combustion at right
angles and in radiating jets. BY this
arrangement the coal dust and the air
in the zone of combustion are Intimately
and thoroughly mixed. whilst the speed
Of the current which introduces the coal
dust is diminished.
1t will thus be seen that the combus-
ton of the coal which this method pro-
duees is extremely thorough, for each
particle Of fuel floats in the air and is
brought into contact with the oxygen
necessary for its combustion, so that 1t
is totally consumed the moment it
enters the sphere of combustion. The
proof of its being totally consumed is
seen in the fact that not even trace of
smoke is perceptible. With the pressure
of finger the supply of coal dust and
OF draughr can be perfectly regulated,
and thereby an equable generation of
heat secured.
Among further advantages of the new
system of firing may be mentioned the
diminished wear and tear of steam boil
ers. the absence Of fire CRATES and fire
bridges, the ability to start or to stop
the fire instantaneously, the absence Of
heaps of cinders and ashes, and the
avoided necessity for high chimneys. 1t
is further claimed that this method of
firing is suitable not only for steam
boilers, but also for all kinds of heating,
welding, smelling and burning proc
esseS, that it can be used in all sorts
of manufactures, and that by it not only
ordinary coal, but also brown coal, char
coal, turf powder. etc., may be burned.