DE1202246B - Device for keeping the free atmosphere clean from dust emissions that occur when expelling cooked coke cakes from horizontal chamber coke ovens - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

ClOb

German class: 10 a -16/01

Number: 1202 246

File number: H38859VTb / 10a

Filing date: March 9, 1960

Opening day: October 7, 1965

When operating horizontal chamber coke ovens, the glowing trimmings of each are cooked off Furnace ejected. First, the two doors of the coke oven are on the so-called machine side and coke side of the furnace battery lifted off. Then press the one on the machine side on the furnace battery arranged to be longitudinally displaceable by means of a push rod Print head the glowing coke cake to the coke side out of the furnace chamber. To bridge a shelter on the coke side for. the heating device of the coke ovens below the coking chambers, the so-called master's passage, during the transfer of the glowing coke cake from the furnace chamber into an extinguishing car is used a movable on the ceiling of the master's corridor, rail-bound cake guide.

The coke falls from the cake guide of this coke cake guide car into the coke extinguishing car. The height of fall depends on the height of the furnace chamber. When you press a coke oven, the coke cake becomes as a result of its movement caused by the push rod of the extrusion machine its slide way out of the chamber through the guide sole and the guide cheeks of the coke cake guide brittle. After leaving the guiding facility, the glowing coke falls into the fire truck, whereby it disintegrates into a pile of coke. By becoming brittle and especially by the When the coke falls into the fire-fighting vehicle, the smallest coke particles are made up of coal that has not been cooked off resulting particles are released. The high temperature of the glowing coke, which starts to burn when it comes into contact with air, attracts large amounts of air, which is then heated and due to its lower weight compared to the rest of the atmosphere, it penetrates almost vertically and are torn up around the coke cake, taking with them the dust that has been released. This upward, dust-laden gas-air flow contaminates the surrounding environment to a considerable extent free atmosphere, visible in violently rising, gray to black dust clouds. This will not only the wider area around the coke oven, but above all the coke oven operator annoyed to a considerable extent on the furnace roof and on the master walkway.

A device for keeping the free atmosphere clean from being cooked off has already been made Coke cake from horizontal chamber coke ovens occurring dust emissions by means of an a dedusting device connected to the catching device to keep the free ones clean Atmosphere of when ejecting cooked coke cake from horizontal chamber coke ovens occurring dust emissions

Applicant:

Hardening, Kuhn & Co.
ίο Maschinen-Fabrik G. mb H., Düsseldorf, Königsberger Str. 7

Named as inventor:
, - Dr. Fritz Schulte, Düsseldorf

Proposed hood for dust-laden gases produced during exhaust, to avoid those Air deterioration is used by the ingress of air during the expression of the coke cake due to a partial low level of combustion on the surface of the coke and due to it forming fine ash is caused, which together with the coke dust as a result of the heat buoyancy is whirled up. The coke cake guide of the coke cake guide carriage is here with a covered with a dust collector hood.

The invention is based on the knowledge that the essential contamination of the air does not pass the relatively minor air pollution caused by the squeezing out of the coke cake from the coke cake escaping dust takes place, but when breaking apart of the Coke during its fall and impact on the extinguishing pad, as this is the surface of the coke cake is considerably enlarged, so that enormous amounts of dust are released.

The object of the invention is therefore, in particular this when falling and impacting from the glowing coke cake on the fire truck or an extinguishing platform to collect dust and to be separated from the air-gas mixture.

The solution according to the invention is that the safety hood at least the area of the falling and spanned onto a quenching pad of impacting coke cake. This achieves that which are essentially responsible for the contamination of the air on the coke side of coke ovens

509 690/170

3 4

Lichen considerable amounts of dust collected and independent of the prevailing damage can be made, operating conditions and the construction of the extinguishing

In a further development of the invention, it is expedient to dare to lift the safety hood the catch hood to form the coke cake and lowerable at the same time.

leadership spanned and the suction of the 5 Another feature of the invention can be therein Movement of the coke cake through the coke cake consist of introducing the dust collector discharged dusty gas-air flow finally to her or her drive units in enables. known way on the coke cake tour

To also in the cases a realization of the wagon is arranged.

Invention to enable in which an additional io Mostly it is advisable to assign a fan to the Entstaubungsvorrich-load of the coke cake guide wagon through the tion, the suction side minde-catch hood and through the dedusting device at least to take away the when climbing the with particular regard to the existing dust-containing gas-air stream forming dust-coke oven systems is essentially used for carrying pressure within the catch hood. As a result of this ability of the master gangway ceiling, the entire gas that carries dust clouds can be possible, it can essentially be captured, discharged and sometimes the invention as expedient that the dust on the pressure side of the fan of the dedusting -Catch hood with the coke cake guide carriage. The fact that the bound and at the end of their the fire truck over suction pressure at least corresponds to the dust pressure within the gripping part with an additional support 20 catch hood or is provided with respect to this only and guidance. In this proportionately higher, the admission of false air on the slope can also be restricted to a minimum level.
Recommend invention, according to which the catch According to the invention, the dedusting

hood-carrying coke cake guide car as direction from at least one centrifugal separator Portal construction is formed, which on the one hand consist of 25, according to a further feature of the earth Meistergang and, on the other hand, on an above finding as a cyclone separator known per se Can be formed arranged upper edge of the extinguishing vehicle.

Rail is movable. In this way it is possible. In other cases, the invention is recommended

Even in existing coke ovens with an extensive dedusting of the dust-laden gas capacity rising from the master corridor ceiling, which is relatively low, the collecting and venting air flow according to the invention can be used by a centrifugal separator, the dusting device, without one being equipped with a radial fan.
significant additional stress on the master’s course - after a particularly preferred and advantageous

ceiling entry. The arrangement can be the given embodiment of the invention in the event of a flight be made in such a way that the safety hood as a 35 force separator as a centrifugal wet dust extractor from the supporting structure of the coke cake guide car trained. This makes it possible to remove the dusty det is. Here, according to a further feature, gas-air flow can simultaneously escape from the safety hood Invention of feeding in and dedusting the dedusting device. By that against the finally their drive unit directly on the rotatable separating elements of the wet deduster the safety hood be arranged. 40 sprayed wetting agent can bind the dust and

In all cases it is advisable according to the invention to remove this together with the wetting agent as a pulp Catch hood in the sense of a full blown. The preferred use catching and discharging the dusty gas-air of such a rotary wet deduster for discharge To make it flow-compatible and to minimize the conveyance and removal of dust in the hood based on the dusty gas-air mixture from the dusty gas-air stream 45 coated inside from a chemical and knowledge that with existing coke oven systems physically resistant material - the load-bearing capacity of the master corridor ceilings and theirs place. In this way, a long life support structure as well as the space for the Unterder Catch hood guaranteed without the need to bring a dedusting system to the Füh measures required for their maintenance 5 ° rifle trolley or a special planned for this purpose are. Car is relatively limited, so here

In those cases where only one side has a relatively small weight and a small one Extinguishing tower for the space requirements of such a high-performance dust extractor located on the fire-fighting vehicle Red-hot coke is available, recommending it to be particularly beneficial. That is useful According to another feature of the invention, 55 centrifugal wet dust extractors in the upper area of the the catch hood arranged in or against the direction of the coke cake guide carriage and to one Extinguishing tower to expand. In this way, the container located on this is sufficient for the wetting, that the glowing medium that fell into the fire engine was via a pipe equipped with a pump Coke connected to the process of the extinguishing car. The centrifugal wet dust extractor is sufficient one essential for uniform extinguishing in a circulatory system for what is required for wetting Dump height switched in or against the Riehmittel.

maintenance of the extinguishing tower over a longer period of time

away in the area of action of the catch hood, the well-known brush wet dust extractor with a Geso that the blower part lying on the fire truck and at least one with this in the rotary glow Coke mainly at and still after 65 Sinn coupled dedusting part in the form of a the dust brush wheel released from the fall on the fire engine.

caught and at the exit into the free atmosphere. Furthermore, it is recommended according to the invention that

sphere can be hindered. automatic switching devices for the

Switching on and off the one provided for dedusting the ascending, dust-laden gas-air stream Facilities at the beginning and at the end of the process of ejecting the glowing coke are provided.

In the drawing, the invention is shown with further details on the basis of several exemplary embodiments illustrated. It shows

F i g. 1 a coke cake guide carriage with a catch hood and one connected to it Centrifugal wet dust extractors,

F i g. 2 shows a side view of FIG. 1,

F i g. 3 a coke cake guide carriage with a catch hood and arranged next to the cake guide Centrifugal wet dust extractors,

F i g. 4 is a side view of FIG. 3,

F i g. 5 a coke cake carriage with a collecting hood and two cyclone dust collectors,

F i g. 6 is a side view of FIG. 5,

F i g. 7 a coke cake guide carriage with one in the area of the emptying side of the coke extinguishing carriage supported catch hood on which a centrifugal wet dust extractor is arranged,

F i g. 8 is a side view of FIG. 7th

In Fig. 2, the chamber of a coke oven battery is denoted by 1, on the coke side of which there is a shelter for the heating device of the coke ovens below the coking chamber, a so-called master walk 2 is located, on which a coke cake guide carriage 5 is movably arranged on a track 3, 4. On a track 6, 7 that runs parallel to the master aisle 2 and extends over the ground a coke extinguishing carriage 8 is provided, which is used to receive the from the furnace chamber 1 by a not shown Coke squeezing machine with push rod and print head each squeezed out glowing trimmings cooked oven is used. The glowing coke inside the guide carriage is turned into a cake guide 9 out, which compared to the coke cake guide carriage expediently by a small Dimension is mounted displaceably in the longitudinal direction of the master's passage.

F i g. 1 shows that the cake guide 9 is complete and the extinguishing carriage 8 is partly slightly perpendicular distance are covered by a safety hood 10, which is used to collect and discharge of the gas-air flow that flows up into the safety hood and is laden with dust clouds. In the direction of flow of the gas-air flow, the catch hood 10 is a centrifugal wet dust collector 11 with a Drive motor 12 connected downstream on a platform forming the upper part of the guide carriage

13 are arranged. The catch hood 10 is connected to the centrifugal wet dust extractor 11 through a pipeline

14 connected. An outlet pipe 15 attached to the centrifugal wet dust extractor is used to discharge the gas-air stream essentially freed from dust.

The centrifugal wet dust extractor consists of a V-belt drive with the drive motor 12 coupled fan, with its axis coupled in the direction of rotation at least one rotating separation element is. The rotating separation element is wetted with a wetting agent by means of nozzles a storage container 16 arranged on a platform 13 is contained and with the aid of a pump 17 can be fed through a line 18 to the rotating separation element. The wetting agent binds the dust and is thrown off together with it as a cloud. The turbidity is either in the Circuit in turn fed to the container 18, in which the coarse impurities are deposited 5 or filtered, the roughly cleaned network fluid then being renewed by means of the pump 17 is applied to the rotating separating element, or it is the pulp via a line 19 fed to a collecting container 20 for the dust sludge. In the preferred according to the invention The circulation system for the wetting agent becomes more and more enriched with the finest dust particles Turbid repelled from time to time and replaced with a new wetting agent. Repelling the turbidity can be started by means of pump pressure in the extinguishing truck filled with glowing coke, or more expediently certain drainage points in a special line, e.g. B. to the clarifier of the extinguishing water system. Water is suitable as a wetting liquid, although there are also other good dust-binding and, if necessary, other liquids Tar-dissolving liquids come into question in order to replace existing or forming tar-containing To prevent approaches within the centrifugal wet dust extractor. The apparatus can be recommended Rinse with a tar dissolving liquid from time to time.

In the embodiment according to FIG. 3 and 4, in which, as in all exemplary embodiments, the same parts have the same reference numerals, the centrifugal wet dust extractor is arranged next to the cake guide 9 on the guide carriage 5. The pipe 14 discharging the dusty gas-air stream from the collecting hood 10 to the centrifugal wet dust extractor 11 is attached to the side of the collecting hood 10 at 21. The deposited dust sludge is ejected directly into the coke extinguishing car 24 through a line 22 and a nozzle 23.

In the embodiment according to FIG. 5 and 6 is the one on the platform of the coke cake carriage 5 combined suction and dedusting device arranged next to the cake guide 9 formed by a fan 25 driven by an electric motor 26, which is formed by a suction line 27 and via branch lines 28, 29 with upper spaces 30, 31 of two parallel-connected Cyclones 32, 33 are connected for dust separation. In this cyclone dust collector is through a line 34 connected to the safety hood 10 of the guide carriage 5, the line 34 caught in the safety hood, The gas-air stream containing dust particles is discharged into the guide spaces 35, 36 of the cyclones got. The dust discharged from the cyclones by the fan 25 is essentially freed from it Gas-air flow then escapes through a chimney 37. Those at 38, 39 in the cyclones themselves collecting dust particles fall into collecting funnels 40, 41, from which they, if necessary with the help of a Conveyor screw, via lines 42, 43 and from outlet nozzles 44, 45 with a coke extinguishing car 46 quenched coke are fed.

In the case of the FIG. The embodiment of the invention illustrated in Figures 7 and 8 is an additional one Guidance provided in the area of the emptying side of the coke extinguishing car. Here is the supporting structure the hood in the direction of the emptying side of the extinguishing vehicle over the actual hood also extended and provided with two rollers 47, 48, which in the drive direction via a gear transmission

7 8

49 with a common drive motor 50 ge

are coupled. The drive motor 50 is useful in the sense of a complete collection and discharge with the drive of the coke cake guide carriage of the glowing coke on the extinguishing carriage synchronized in such a way that the circumferential speed rising dusty gas-air stream streams of the rollers 47,48 each of the circumference 5 to shape and at least on the speed of the impellers of the coke cake fed by the dusty gas-air stream rungswagen is adapted. The rollers 47,48 inside from a chemically and physically are based on a rail 51, which is based on soil-resistant material, such as corrosion-resistant and support 52 is mounted and approximately horizontally par wear-resistant sheet steel or the like. To produce. In allel to the track 3, 4 to the coke cake guide io some cases can also, possibly in wagons 5 extends at a height that is slightly larger than binding with other materials, a lining that of the extinguishing car is measured. On the hood with asbestos or asbestos-containing material softening From the embodiment, there are also substances in question, but their surface possible in certain cases, the rollers 47, 48 expediently to reduce flow problems Special drive to be arranged freely rotatable, 15 lustful in the removal of the upstream gas long that is kept as smooth as possible during the process of the coke cake feed air stream. These service vehicles on this through the catch hood active substances can optionally on the aforementioned kende moment remains within permissible limits. Steel sheets be fastened by rivets.

From the F i g. 7 and 8 it can also be seen that the

Centrifugal wet dust extractor 11 directly on the 20 of those cases in which locomotives are arranged over the safety hood 10 so that the pipeline protrudes from the top of the fire engine -14 between the safety hood and the centrifugal wet- the driver's cab for transporting the fire engine Dust extractors are provided in the extinguishing tower in the sense of the lowest possible flow, the catch hood losses only needs to have a curvature on the sides and a profile that can be measured upwards and briefly. As a result of this part of the driver's cab of the locomotive order, a lateral angling of the line is to have an approximately corresponding cutout.
19 for the removal of the dust sludge in the Furthermore, it can be useful in some cases

Collection container 20 necessary. be, the coke cake guide car on one in the

As also from FIGS. 7 and 8, the area of the furnace roof in the longitudinal direction of the coke is the catch hood 10 in the direction of the arrow χ in FIG. 7 30 oven battery extending guide rail by means of extended. This ensures that the support is supported by guide rollers in order to counteract the glowing coke on the extinguishing car with a tipping moment that causes the gas-air flow, which flows up on the substantial buoyancy and thereby clouds dust-coke cake guide car from a trap hood, for as long as possible is practiced, which is not additionally supported in the area of the emptying side of the time the area of action of the catch hood 10 from 35 extinguishing car.
is set. Furthermore, for reasons of the works association

In deviation from the above-discussed technical work, the fan motors for the Embodiments there is also the possibility of dedusting system and other drives with the the coke cake connected to the catch hood - operation of the push rod mechanically, pneumatically, train the guide car as a portal construction, 4 ° hydraulically, electrically or radiometrically in this way one side of which is on the master walkway and the coupling that the dust extraction system when leaving Side in the area of the emptying side of the driving of the push rod of the coke squeezing machine The extinguishing car above the upper edge of the fire fighting vehicle is automatically switched on from its rest position, one rail each are arranged to be movable. There can be a time limit via a time switch-off mechanism also the possibility of keeping the cake as a 45th operation of the dedusting system according to the reverse component one with regard to the dust removal of the push rod in its rest position and there at the same time serving as a bridge car with catch after the coke extinguishing car has continued into the hood to be provided, whereby the bridge car can be reached with the extinguishing tower in order to supply cold fresh air its desired cooling of the dust extraction system in the longitudinal direction of the fire truck tracks Suck ends movably on rails or 50.

Supports runways. Catch hood and cake guide The centrifugal wet dust extractor can also be coaxial

thus form a unit that is at two points on the to approximately perpendicular from the top of the safety hood Earth and, as a third point, the pipeline leading away from the guide carriage. Locking supported is. The borrowed each side of the portal construction can be assigned to cyclone separators and centrifugal force instead Wheelsets are expediently 55 wet dust extractors if necessary also other, z. B. synchronously driven. use electrostatic dust extractors

For all of the above-discussed statements.

In addition, it is of course possible to use several forms of the invention.

be moderate, the hood can be raised and lowered to other dedusting devices in adaptation to the to assign them more closely to the ascending dust condition - the respective proportions in parallel or in series gen to be able to counteract gas-air-flow. Switch one.

Such an arrangement of the safety hood can be The invention is independent of the other cases be necessary in which a contamination formation of the coke cake guide carriage, the demder Atmosphere when pressing coke ovens with or without its own drive and with or This is to be prevented if local conditions can be 65 equipped without a door lifting device, nisse the placement of a dedusting system Finally, through a correspondingly large design on coke cake guide car customary construction and by controllability of the fan a changedion not allow. Licher induced draft be provided, its maximum value

possibly also by a considerable amount above the maximum value within the hood occurring dynamic pressure lies.

Claims (19)

Patent claims: 1. Means for keeping the free atmosphere clean when expelled from cooked Coke cake from horizontal chamber coke ovens occurring dust emissions by means of an a dust collector connected to the dust collector for dust-laden particles during ejection Gases, characterized in that the catch hood (10) at least the Spans the area of the falling coke cake hitting an extinguishing pad. 2. Device according to claim 1, characterized in that the safety hood (10) at the same time the coke cake guide spans and the suction during the movement of the coke cake the dusty gas-air stream released by the coke cake guide is made possible. 3. Device according to claim 1 or 2, characterized in that the catch hood (10) connected to the coke cake guide car and at the end of their overhanging the extinguishing car Part is provided with an additional support (52) and guide (51). 4. Device according to claim 1 or 2, characterized in that the catch hood (10) carrying coke cake guide car is designed as a portal structure, on the one hand the master gang (2) and on the other hand on one above the upper edge of the extinguishing vehicle (8) Rail (51) is movable. 5. Device according to one of claims 1 to 4, characterized in that the catch hood (10) in the sense of a complete collection and removal of the dusty gas-air flow Is designed to be flow-compatible and at least on that of the dusty gas-air flow coated inside made of a chemically and physically resistant material consists. 6. Device according to one of claims 1 to 5, characterized in that the catch hood (10) in or against the direction of an extinguishing tower for the one on the extinguishing truck located glowing coke is expanded. 7. Device according to one of claims 1 to 6, characterized in that the catch hood is designed to be raised and lowered. 8. Device according to one of claims 1 to 7, characterized in that the dedusting device including her or her drive units in a known manner the coke cake guide carriage is arranged. 9. Device according to one of claims 1 to 8, characterized in that the dedusting device and their drive unit are arranged directly on the safety hood (10). 10. Device according to one of claims 1 to 9, characterized in that the dedusting device a fan is assigned to the suction side at least to remove the dusty gas-air flow when rising forming dynamic pressure within the catch hood (10) is used. 11. Device according to one of claims 1 to 10, characterized in that the dedusting device consists of at least one centrifugal separator. 12. Device according to claim 11, characterized in that the centrifugal separator as known cyclone separator is formed. 13. Device according to claim 11, characterized in that the centrifugal separator with Radial fan is equipped. 14. Device according to claim 13, characterized in that the centrifugal separator as Centrifugal wet dust extractor is designed. 15. Device according to claim 14, characterized in that the centrifugal wet dust extractor arranged in the upper region of the coke cake guide carriage (5) and to one on this located container (16) for the wetting agent via a provided with a pump (17) Line (18) is connected. 16. Device according to claim 14 or 15, characterized in that the centrifugal wet dust extractor is connected to a circulatory system for the wetting agent. 17. Device according to one of claims 14 to 16, characterized in that the centrifugal wet deduster from a known brush wet deduster with a blower part and at least one coupled with this in the direction of rotation There is dust removal part in the form of a brush wheel. 18. Device according to one of claims 3 to 17, characterized in that the coke cake guide carriage on a guide rail extending in the longitudinal direction of the coke oven battery in the area of the furnace roof Guide rollers is supported. 19. Device according to one of claims 1 to 18, characterized in that automatically working switching devices for switching on and off the for the dedusting of the ascending, Dust-laden gas-air flow provided facilities approximately at the beginning and at the end of the ejection process of the glowing Coke are provided. Legacy Patents Considered:
German Patent No. 1106 288. For this purpose 2 sheets of drawings 509 690/170 9.65 © Bundesdruckerei Berlin