Note: Descriptions are shown in the official language in which they were submitted.
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The present invention relates to a method of and an
; arrangement for filling coal in oven chambers of a coke oven
battery by a telescopable filling pipe which i6 formed on a
filling car and is lowerable with its lower end to a filling
-~ opening frame of the filling opening of the coke oven battery.
~ The charging of the coke chambers of a coke oven
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battery is performed through a filling opening arranged in the
oven cover, which is closed during the coking process by a so-
called filling opening cover. Duriny filling of the oven
chambers the cover is removed by a cover lifting device, so
that the coal supply can be performed from the filling car
~' through the lowered filling pipe. The filling pipe forms a
tight closure with the filling opening frame, which prevents
escape of gas drawn with the incoming coal and produced during
r the utilized coking process. This gas can be aspirated many
, times through the filling pipe and supplied to cleaning
devices and/or to a collecting main of the coke oven battery.
Since this gas contains dust, bituminous components and other
impurities to a great exten~, the residues of these impurities
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are precipitated in ~orm of bituminous deposits in the
interior of the filling pipe. Simultaneously, a part of the
q gas remains at tne end of the f illing process in the filling
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pipe. After finishing the filling process, in other words
~ 25 when the filling pipe is again lifted, these rasidues burn on
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1 the ground of the receding heat action and ignite the gas
remaining in the filling pipe. The emissions and flames
released as a result of this exit the outlet opening of the
filling pipe since due to the lifting of the filling pipe the
negative pressure acting on the filling opening collapses and
an active aspiration of the emission is no longer provided.
~3 In view of increased requirements with respect to
the environmental protection, it is however necessary to
suppress emissions caused by lifting of the filling pipe as
much as possible.
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`~ Accordingly, it is an object of the present
invention to provide a method of and an arrangement for
filling coal in oven chambers of a coke oven battery, which
avoids the disadvantages of the prior art.
In ~eeping with these ob~ects and with others which
will become apparent hereinafter, one feature of the present
invention resides, briefly stated, in a method of the above
mentioned general type in which the lower end o~ the filliny
n pipe i8 closed at the beginning of the lifting and the closure
is maintained until the beginning of the next filling step.
s In addition, the emission safety can be further
increased when in accordance with the present invention at the
end of the filling proGess, before the lifting of the filling
pipe, the gas which remains in the filling pipe is aspirated.
The aspiration can be performed by the negative pressure
applied in the oven chamber through a drawing piping mounted
on the ~illing pipe, and the begin~ing of the aspiration step
is activated by a control system. The drawing pipe can also
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aspirate the gases which are produced during combustion of the
residues located in the fllling pipe and during lifting of the
filling pipe are compressed due to closures of the filling
pipe. Thereby emission escape at the sealing elements of the
sealing pipe due to the pressure increase is prevented.
-~ 25 Since the closing of the filling pipe must be
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1 performed as early as possible, or in other words directly
after the beginning o~ the li*ting, and the closure must be
maintained to the beginning of the next filling step, it is
, advantageous that the closing of the filling pipe is performed
1 5 in dependence on a certain average distance of the filling
j pipe from the oven top. T'nereby it i5 guaranteed that during
the lifting of the filling pipe a sealing of the filling pipe
is performed immediately, after the aspiration of the filling
. gas has been interrupted.
Closures of any type are sultable as closing
elements for the filling pipe. In particular, a closure can
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be ~ormed as a cover which i6 turnable in or on the outlet
opening o~ the filling pipe, and can be displaced, lifted or
drawn. Also, the same functions can be performed by a slider
arranged in the outlet opening. The closing elements can be
naturally provided with a suitable heat resistant coating.
The novel features which are considered as
~¦ characteristic for the invention are set forth in particular
in the appended claims. The invention itself, however, both
as to its construction and its method of operation, together
with additional objects and advantages thereof, will be best
understood from the following description of specific
3 embodiments when read in connection with the accompanying
~ drawings.
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FIG. 1 i~ a view showing a fllling pipe which is
icloseable by a turnable cover in accordance with one
embodiment of the present invention;
~, 5FIG. 2 is a plan view of a cover arranged under the
filling pipe with the associated turning element;
FIG. 3 is a view showing an embodiment corresponding
to the embodiment of FIG. 1, which additionally provides a
.~withdrawal of gases located in the ~illing pipe.
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-~ In an arrangement in accordance with the first
embodiment shown in FIG. 1 a filling pipe 1 is formed as an
integral element and surrounds an outer pipe 2 of a filling
car which is not shown in the drawings. It is to be
understood that also it is possible such an embodiment in
which the filling pipe is composed of several pipe pieces
which are telescopable relative to one another. The filling
pipe 1 and the outlet pipe 2 are surrounded by a ~lexible seal
3 which is expanded downwardl~ during lowering of the filling
pipe 1. The ~illing pipe 1 is connected through a supporting
ring 4 and link rods 5 with a lifting beam 6. The upward and
downward movements of the li~ting beam 6 which lift and lower
the filling pipe 1 is performed by a not shown electrically or
hydraulically operated lifting device.
In accordance with the present invention the filling
pipe is provided at its lower end with a cover 7 which serves
as a closing element. The cover 7 is suspended on a
`~3 supporting ring 9 through hinge rods 8, and the supporting
ring 9 is mounted on the turning arm lO. The turning arm ?
and the supporting ring 9 are connected with a hydraulic
cylinder-piston units 12 through the rods 11. The hydraulic
cylinder-piston units 12 is mounted on the lifting beam 6 and
operates for providing the lifting and lowering movement of
the cover 7. As can be seen ~rom the plan view of FIG. 2, the
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1 turning arm lo is additionally connected with a hydraulic
, cylinder-piston units 13 which provides outward and inward
¦ turning of the cover 7. The reference numerals of FIG. 2
,,,,l~Z correspond to the reference numerals of FlG. 1.
The arrangement in accordance with the present
;~! invention operates in the following manner:
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''''r, In the initial position when tha filling pipe 1 is
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~?~i lifted and closed by the cover 7, the hydraulic cylinder-
piston units 12 and 13 are retracted. When by a control
signal the lowering step o~ the filling pipe 1 is actuated,
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first the hydraulic cylinder-piston unit 12 is extended and
the cover 7 is removed from the Pilling pipe 1 and lowered
~,, downwardly. Then the hydraulic cylinder-piston unit 13 is
extended, and the lateral turning movement of the cover is
performed in correspondence with the dash-dot line in FIG. 2.
When the hydraulic cylinder-piston unit 13 is completely
extended and the cover 7 is completely turned, the downward
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i movZsment of the filling pipe starts. Simultaneously, the
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~Z hydraulic cylinder-piston unit 12 i8 retracted and the turned-
", 20 out cover 17 is lifted. Since the cover 17 is connected
''''~`"d through the hydraulic cylinder-piston unit 12 with the lifting
Z beam 6, a constant great safety distance between the oven top
16 and the turned-out cover 17 is always provided with the
~, filling pipe 1 completely lowered on the filling opening 15
Z~ 25 and with the completely retracted hydraulic cylinder-piston
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1 unit 12. In this manner, height variations of the oven top 16
and the filling opening 15 caused by constructing the
arranqement are compensated.
Immediately after finishing the filling process, the
lifting of the filling pipe 1 is per~ormed in response to a
control signal and simultaneously the extension of the
hydraulic cylinder-piston unit 12 is executed. When it
reaches its end position, the hydraulic cylinder-piston unit
13 is retracted and the cover 7 is turned under the filling
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-~ lo pipe 1. A stopper 14 which is connected with the rod 11
guarantees that the cylinder-piston unit 12 is then completely
extended when the filling pipe 1 is lifted so that an exactly
definite distance between the cover 7 and the filling pipe 1
is provided. This position of the stopper 14 is shown in
FIGS. 1 and 3 with a dash-dot line. The switching guarantees
that at the beginning o~ the turning always a sufficient
safety distance between the cover 7, the filling pipe 1 and
the oven top 16 is provided and thereby the earliest possible
turning-in of the cover 7 is per~ormed. A~ter the hydraulic
cylinder-piston unit 13 has been completely xetracted, the
hydraulic cylinder-piston unit 12 is retracted and the cover
17 is pressed under the outlet opening of the filling pipe 1
which is thereby closed in a gas-tight manner. The filling
pipe 1 can then be retracted to its initial position.
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~ 25 FIG. ~ shows an embodiment of the inventive
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l arrangement in which the filling pipe 1 is provided with a
lateral aspiration pipe 7 for a,~pirating the gas located in
the filling pipe. The aspiration pipe 17 is connected by a
flexible pipe piece 18 with an aspiration pipe 19 which in
turn is connected to the outlet pipe 2 of the coal filling
;, car. Thsreby the gas contained in the filling pipe 1 is
aspirated and withdrawn in a suitable manner for example
through the collecting main of the coke oven battery. This
embodiment is utilized when at the end of the filling step
¦ lo before the li~ting of the filling pipe the gas which remains
in the filling pipe must be aspirated and/or when in the
closed filling pipe during the lifting compressed gas must be
` withdrawn.
; It will be understood that each of the elements
J described above, or two or more together, may also find a
useful application in other types o~ methods and constructions
differing from the types described above.
While the invention has been illustrated and
described as embodied in a method o~ and arrangement for
filling coal in oven chambers of coke oven battery, it is not
intended to be limited to the details shown, since various
modifications and structural changes may be made without
departing in any way from the spirit of the present invention.
~, Without further analysis, the foregoing will so
, 25 full-J reveal the gist of the present invention that others
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, 1 can, by applying current knowledge, readily adapt it ~or
various applications without omitting ~eatures that, from the
., standpoint of prior art, fairly constitute essential
~ characteristics o~ the generic or specific a6pects of this
:~` 5 ~ invention.
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~ What is claimed as new and desired to be protected
.~ by Letters Patent is set forth in the appended claims.
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