EP1095119B1 - Leveller bar for coking ovens - Google Patents

Abstract

The invention relates to a levelling bar for coking ovens, for levelling the cones of discharged coal which form under the filling holes of the oven chamber during the filling process. The levelling bar consists of two cheeks, such as plates ( 1 ), which extend essentially over the entire length of the ranged at a distance from each other depending on the width of the oven chamber, and parallel to each other. They are also interconnected and are essentially vertical. The levelling bar also has transversal coal carriers ( 2 ) which are arranged in the intermediate space delimited by the cheeks ( 1 ) at a mutual distance, one behind the other and which only extend over part of the cross-sectional surface of the levelling bar formed between he cheeks ( 1 ). The height ( 3 ) of the coal carriers ( 2 ), which take up the entire interval between the cheeks, is less than the height (H) of the cheeks ( 1 ) and the cheek form a gas channel ( 6 ) above the coal carriers ( 2 ) which is essentially free of built-in components.

Description

The invention relates to a dozer for coking ovens according to the preamble of claim 1.

From EP 0 483 497 B1 is a generic leveler known from the furnace in the longitudinal direction and parallel to each other arranged vertical cheeks made of sheet metal, wherein in the limited space in the cheeks in regular intervals cross-standing Kohlemitnehmer in shape are arranged from cheek-high walls of sheet metal. Shortly before which are under the filling holes of the coke oven chamber during the Filling process forming coal cone to be kept clear To reach the gas collection room, the dozer will be moved through the Dozer door opening inserted into the coke oven chamber and back and forth moved, whereby the coal cone be leveled. So after retracting the scraper in the oven chamber during the filling process, the free gas collection room over which coal is not blocked to a great extent, Coal drivers do not extend over the whole Width of the gap between the two cheeks and the Coal drivers are mutually offset each one of the two cheeks arranged. The cheeks are therefore connected by distance bars.

The dozer has been found to level during planing despite being inside the dozer provided alternate spaces between the Cheeks and the free ends of coal pickup the interstitial spaces can be closed by the coal to be planed, so that the filling gases are not can be sucked more freely for submission. This results in more or less strong uncontrolled emissions, since the filling gases are no longer free on the Riser can be sucked.

FR-A-2 666 811 discloses a leveler for a coke oven having two parallel ones vertically arranged cheeks and intervening webs, in the lower Part of the dozer are arranged.

FR-A-1 102 058 relates to a cleaning device for the leveling opening. In the Figures a dozer is disclosed, the Kohlemitnehmer a lower height as the height of the cheeks of the dozer.

DE-A-0 902 842 discloses a leveler with transverse webs, one downwards have open, trapezoidal shaped neckline. This arises during the Leveling an additional, hill-shaped piled coal mass, the cross section of the gas collection chamber reduced.

In each of the three publications a leveler is revealed, the top of which is executed closed.

The invention has for its object to provide a leveler available during the grading at any time a sufficiently free gas channel in the Ensured gas collection and at the same time ensures a good degree of furnace filling is.

The solution of this problem is specified in the characterizing part of claim 1.

The dependent claims contain useful embodiments.

The leveler according to the invention has the advantage that during the grading process in the space between the cheeks of the dozer a free gas channel is formed, through which the filling gas unhindered horizontally to the riser or can drain to the template.

This gas channel is particularly reliable trained if, according to a development the invention, the height of Kohlemitnehmer at most half the height of the Cheeks corresponds.

As the dozer is open at the front, it slides into the coal cone and carries the coal cone with the coal people. It does not come, as with the known ones Bulldozers, to a towering coal cone in front of the leveler. So the scraper a has sufficient transport capacity, is according to the invention the number of coalmembers increased. Thus the transport capacity the leveler according to the invention at least with the transport capacity of the known leveler (EP 0 483 497 B1), is the number of coalmembers at least so great that the sum of all Teilquerstegflächen the sum of all full cross-land areas of coalmembers, whose height extends beyond the height of the cheeks corresponds. At the same time, the number of coal people becomes maximum as far as increased, until the distance of the Kohlemitnehmer the height the Kohlemitnehmer corresponds. In this embodiment it is guaranteed that the coal will be used by the Kohlemitnehmer fall through or in between the Kohlemitnehmern formed compartment can fall into it. It can Do not build up any carbon bridges on the coal drivers.

Due to the higher number of coal people in the inventive leveler is the transport capacity increased, so that with every back and forth movement of the dozer more coal is transported. This way will an education of coal shot cones under the filling holes already largely avoided. If the leveler with higher frequency than previously usual moves in the oven chamber becomes a pouring cone training in leveling bar height avoided.

The Kohlemitnehmer arranged one behind the other can also have different heights. This will in addition Prevents a high coal mountain from the coal takers can be built. The over a Kohlemitnehmer with low altitude overflowing coal falls into the behind the Coal pusher lying tray without leaving a high coal mine can pile up. It is thus ensured that above the coal overflowing over the coalmine free gas channel for the discharge of the filling gases within the There is a leveling bar.

It is also possible to use the cabbage drivers in one of the Vertical deviating angles on the cheeks of the dozer to fix. Here are some Kohlemitnehmer with their upper edge to the rear end of the dozer arranged obliquely and other Kohlemitnehmer with its upper edge at an angle to the front end of the grading bar to be ordered. In the oblique arrangement to the rear is during the forward movement of the dozer the Overflowing of the coal facilitates. Be the Kohlemitnehmer slanted at the front, the coal is in this Pressed area down slightly and the dozer experiences a certain buoyancy. In addition, the act obliquely arranged Kohlemitnehmer during the filling process as baffles. The coal is produced by the coalmembers of directed to the filling holes in the area between the filling holes. In this way, the coal cone formation is reduced.

It is also possible to arrange the Kohlemitnehmer movable. Thus, e.g. a part of the coalmembers in their upper or lower area on the cheeks of the dozer be stored movably. Every time you move forward or back the leveler they change their position and planing the coal in the respective inclination. So that the Kohlemitnehmer can not align horizontally, is the Slope limited by a stop.

Another possibility is that the Kohlemitnehmer are wedge-shaped. It is possible that the wedge tip points upwards or downwards. A such a wedge shape allows a lightweight construction of the scraper, because the wedge-shaped Kohlemitnehmer a reduction allow the material thickness.

The cheeks of the dozer can also be wedge-shaped be executed. This will increase the statics of the dozer improved. When the wedge tip is down towards the Coal to be planed shows the coal between do not fix the wedge-shaped cheeks, as the gap extended downwards.

So that the force of the coal on the leveler is reduced during the filling process, the upper edges the cheeks and / or the Kohlemitnehmer unilaterally or Beveled on both sides be executed.

The dozer stroke, the grading frequency, the number, the Distance and the height of the Kohlemitnehmernnehmer must with the coal mass flow the filling device matched become.

It is known that by the grading process under the filling holes the furnace chamber of the coal cone between the Chamber wall and the cheeks of the scraper bar as a bulk cone strip stop. In addition to a hindrance of gas removal There may be graphite deposits in this area in the area Gas storage room come. One way of getting these loose cone strips to avoid that the dozer during the Leveling performs a pendulum or slag movement. To achieve this, the bearing and guide rollers become the grading bar with a slope running, the causes the pendulum or slag movement of the dozer.

Another way to eliminate the sanding strip is that the bearing and guide rollers through a displacement device formed laterally displaceable are. Due to this displacement, the leveler can during the grading process, the bulk cone strips on eliminate both sides of the gas collection room. The elimination The bulk cone strip can be through on the cheeks outside arranged ribs or corrugated sheets improved become.

According to one embodiment of the invention, the cheeks Openings on. Through these openings is a lateral Coal incidence in between the Kohlemitnehmern forming Subjects possible. The effectiveness of the grading process is increased by this.

The openings can be made so large that they only be interrupted by bracing, where the coal pickup are attached. This can be the struts also be arranged at an angle.

The leveler is in this embodiment to a in cross-section rectangular truss by the during the grading of the gas collection space only to a small Part is blocked. This will clog the gas collection room with coal particularly effective prevented and The filling gases produced during the filling process can be in the furnace longitudinal direction be dissipated unhindered. By the truss-like Construction of the dozer is also a lateral flow through the dozer, d. H. crosswise possible to the furnace longitudinal direction.

The single bracing, at the openings of the cheeks can be arranged at an angle to the cheeks be. This allows the coal on the sides of the coke oven chamber be stripped off better.

The cheeks of the dozer can be at their front end be widened to the outside. In this embodiment, the Charcoal on the sides of the coke oven chamber at the leveling bar tip directly stripped off.

According to a further embodiment of the invention, the Leveler at its front end one or more Guide bracket on. The guide bracket (s) serve that the leveler is well inserted through the leveling hole can be. This allows the dozer with her front part, which is open to the or the guide bracket is, enter the coal cone without it to a towering pile of coal comes. By the following Kohlemitnehmer is then removed the coal cone and the coal filling levels.

At the front end of the dozer or in the area of the Cheek openings can be arranged movable coal scraper be. By the force of the coking coal on the coal scraper during the backward movement of the dozer the moving coal scraper on the walls of the coke oven chamber pressed. When the forerunner is used again are the Schüttkegelstreifen on the furnace walls through the cleared open charcoal scraper. When extending the dozer from the oven chamber are the folded out laterally Scraper through the frame of the siding in brought a closed position. When entering the next Oven can use the coal scraper as a guide bar Make insertion of the leveling bar easier.

The grading process can according to the invention by the use be improved by pressurized gas. These are on the cheeks of the leveler fluid supply lines with Arranged nozzles. The gas is used primarily to the after passing through the coal cone with the leveling bar Blow away remaining Schüttkegelstreifen. The Nozzles can be at the same height above the dozer blade length distributed one behind the other and / or one above the other be.

It is particularly advantageous if the nozzles with the leveling bar combined, in the cheeks openings having. The blown coal is through the openings blown into the space between the cheeks and transported there by the Kohlemitnehmer.

As already shown, with the inventive Planer a gas channel in the gas storage room available provided, through which the filling gases can be sucked. In the area of the leveling opening of the respective furnace chamber However, there is a risk that through the gas duct false air is sucked. Therefore, the invention provides that the leveler through a sealing and guide box is sealed. This sealing and guide box points from in the top of the dozer until just above the coal pickup projecting bulkheads connected by a Abdichtblech are on, thus sealing off the gas channel. Under the Leveling bar is sealing by a sealing plate added.

In order to improve the seal of the dozer still can the dozer would be enclosed by a housing that sealingly against the leveling door opening.

In the embodiment of the dozer, in which the Kohlemitnehmer have different heights, the Sealing and guide box with joints designed in such a way that the affected bulkhead of the sealing and guiding box can move back and forth and so the height differences the coal pickup adapts. In addition, the movable partition wall from the negative pressure side in their direction be deflected, which limits the negative pressure effect becomes. To increase the sealing effect, too several sealing and guiding boxes arranged one behind the other become. Each sealing and guiding box should be made larger be, as the distance between the coal drivers, so that at least two Kohlemitnehmer of the sealing and guiding box be covered.

To the gas channel training of the leveler invention To increase even further, the Kohlemitnehmer with Be provided openings. The number of openings can be be arbitrary, so that in extreme cases, the Kohlemitnehmer as Perforated sheet are executed. It is advantageous the openings to arrange in the upper region of Kohlemitnehmer or larger perform. The gas channel between the cheeks is thus in Part of the Kohlemitnehmer partially extended. It is also possible to carry out the coal pickers as high as the cheeks and through the openings in the coal drivers to form a gas channel.

The aforementioned, as well as the claimed and in the embodiments described to be used according to the invention Components are subject to size, Shape design, material selection and technical conception no special conditions, so that those in the respective application field known selection criteria unrestricted Application can be found.

Fig. 1

eine perspektivische Darstellung einer ersten Ausführungsform der erfindungsgemäßen Planierstange;

Fig. 2

eine perspektivische Darstellung einer zweiten Ausführungsform der Planierstange;

Fig. 3

eine Seitenansicht von Teilstücken einer dritten Planierstange mit schräggestellten Kohlemitnehmern;

Fig. 4

eine vierte Ausführungsform der Planierstange;

Fig. 5

eine Draufsicht auf die Lager- und Führungsrollen einer Planierstange;

Fig. 6

eine Verschiebevorrichtung für die Lager- und Führungsrollen einer Planierstange;

Fig. 7

eine fünfte Ausführungsform einer Planierstange in perspektivischer Darstellung;

Fig. 8

eine Draufsicht auf bewegliche Kohlekratzer einer Planierstange;

Fig. 9

eine Seitenansicht einer Planierstange mit Leitungen und Düsen;

Fig. 10

die Anordnung eines Dicht- und Führungskastens für eine Planierstange und

Fig. 11

eine sechste Ausführungsform einer Planierstange mit Öffnungen in den Kohlemitnehmern.

Further details, features and advantages of the subject matter of the invention will become apparent from the following description of the accompanying drawings, in which - exemplary - preferred embodiments of the dozer with gas duct are shown. In the drawing show

Fig. 1

a perspective view of a first embodiment of the leveler according to the invention;

Fig. 2

a perspective view of a second embodiment of the leveler bar;

Fig. 3

a side view of portions of a third leveling bar with slanted Kohlemitnehmern;

Fig. 4

a fourth embodiment of the dozer;

Fig. 5

a plan view of the bearing and guide rollers of a dozer;

Fig. 6

a displacement device for the bearing and guide rollers of a dozer;

Fig. 7

a fifth embodiment of a dozer in perspective view;

Fig. 8

a plan view of moving coal scraper a dozer;

Fig. 9

a side view of a dozer with lines and nozzles;

Fig. 10

the arrangement of a sealing and guiding box for a dozer and

Fig. 11

a sixth embodiment of a dozer with openings in the Kohlemitnehmern.

In the figure 1 is a leveling bar with cheeks 1 and between the cheeks 1 arranged Kohlemitnehmer 2 shown. The height 3 of Kohlemitnehmer 2 is significantly lower as the height H of the cheeks 1. The Kohlemitnehmer 2 are arranged at a distance 5 behind one another. Your crossbar area 4 covers only a small part of the gap between the cheeks 1, so that a free gas channel. 6 forms.

From Figure 2 shows that between the cheeks 1 in a row Kohlemitnehmer 2 are arranged, the different Heights 3 have. In this embodiment it is advantageous that the first, low Kohlemitnehmer 2 can pile up no coal mountain in front of him. The overflowing Coal can fall into the next compartment and gets there transported further. Above the Kohlemitnehmer 2 is too There is a free gas channel 6 at each point in time.

FIG. 3 shows, by way of example, carbon pickup 2, which in FIG a deviating from the vertical angle at the cheeks 1 are attached. By Kohlemitnehmer 2 is the during coking coal falling into the furnace chamber during the filling process distributed in the oven and thus counteracted the formation of loose cones.

FIG. 4 shows a wedge-shaped design of the coal drivers 2 and the cheeks 1. This causes a blockage the transport compartments formed between the Kohlemitnehmern 2 reduced by coking coal, as the passage area extended downwards for the incoming coking coal.

In the figure 5 is the storage of the leveler with the Cheeks 1 and the Kohlemitnehmern 2 shown. The campund Guide roller 8 has a slope 7. The cheeks 1 of the leveler leading edges of the bearing and Guide roller 8 cause due to the slope 7 at each Rotation of the bearing and guide roller 8 a change the tracking of the floating dozer. This will cause the leveler during the grading process put in a page motion that may be existing Schüttkegelstreifen under the filling holes between eliminated the cheeks 1 and the furnace walls.

FIG. 6 shows bearing and guide rollers 8 that pass through a displacement device 9 designed to be laterally displaceable are. As a result, it is also possible, the dozer into a lateral movement and training Remove loose cone strips.

In the figure 7 a leveler is shown, whose Cheeks have 1 openings 11. Through the openings 11 can the coal in the lying between the Kohlemitnehmern 2 Fall in and out of transporting compartments of the dozer of the planing stroke. The openings 11 are bounded by struts 12, where the Kohlemitnehmer 2 are attached. The struts 12 can be at an angle be arranged to the cheeks 1. This will make the coal better in the transport compartments between the coal drivers 2 headed. On the cheeks 1, a guide bracket 13 is arranged be the introduction of the dozer in the Easier opening.

FIG. 8 shows that at the front end of the leveler bar on the cheeks 1 movable coal scraper 15 with the legs 16 and 17 are attached. The coal scraper 15 turns in a joint 18. By the force of the coking coal during the backward movement of the dozer is over the leg 17, the leg 16 of the coal scraper 15 to the Wall of coke oven chamber pressed. When extending the dozer From the oven, the coal scraper 15 through the Frame of the sash in the in the lower part of the Figure 8 shown closed position. When retracting The coal scrapers 15 take over into the next furnace chamber the function of a guide bracket.

The figure 9 shows that at the cheeks 1 lines 20 with Nozzles 21 are arranged. Through the nozzles 21 can under Pressurized gas, e.g. Nitrogen during leveling be blown in such a way that the lateral Schüttkegelstreifen be removed or not even educate. The nozzles 21 can be arranged arbitrarily. By the recoil of the nozzles can additionally pendulum or Slag movements are generated.

From the figure 10 shows that the gas channel 6 by a Sealing and guide box 23 is sealed. The gas channel 6 is replaced by a suspended sealing plate 25 of the sealing box 23, which is movable with bearing shafts 26 and bulkhead walls 27 is arranged, largely sealed. Among the Cheeks 1 and the Kohlemitnehmern 2 is a sealing plate 28th intended. This sealing plate 28 may be part of a housing 24 enclosing the leveler and sealingly the planning door opening, not shown rests. By This seal will be an unwanted air ingress in the Oven during Füllgasabsaugung avoided.

11 shows Kohlemitnehmer 2, the openings 29 and 30th exhibit. Through the openings 29 and 30, the filling gas pass through during the grading process.

LIST OF REFERENCE NUMBERS

1

Wangen

2

coal drivers

3

height

4

Crosspiece surface

5

distance

6

gas channel

7

slope

8th

Bearing and guide roller

9

shifter

11

openings

12

struts

13

guide bracket

15

coal scratches

16

leg

17

leg

18

joint

19

wall

20

Fluid supply lines

21

jet

23

Sealing and guide box

24

casing

25

sealing plate

26

bearing shafts

27

bulkhead

28

sealing

29

openings

30

openings

H

height

Claims (21)

1. A leveller bar for coking ovens for levelling the piled-up cones of coal formed under the filling holes of the oven chamber during the filling procedure, comprising two side walls, such as metal sheets (1), which extend over substantially the entire length of the oven chamber and are arranged parallel to each other at a distance dependent upon the width of the oven chamber and which are connected to each other and are arranged substantially vertically, with coal-entrainment means (2) which are arranged one behind the other and are situated transversely and the height (3) of which is less than the height (H) of the side walls (1), and above the coal-entrainment means (2) the side walls form a gas duct (6) which is substantially free of fittings, characterized in that the gas duct (6) substantially free of fittings includes the front end of the leveller bar.
2. A leveller bar according to Claim 1, characterized in that the number of the coal-entrainment means (2) is at least so great that the sum of all the partial transverse-web faces (4) corresponds to the sum of all the complete transverse-web faces of coal-entrainment means (2), the height of which extends beyond the height (H) of the side walls (1).
3. A leveller bar according to at least one of Claims 1 to 2, characterized in that the distance (5) between the coal-entrainment means (2) corresponds to the height (3) of the coal-entrainment means (2).
4. A leveller bar according to at least one of Claims 1 to 3, characterized in that the coal-entrainment means (2) have different heights (3).
5. A leveller bar according to at least one of Claims 1 to 4, characterized in that the coal-entrainment means (2) are fastened to the side walls (1) at an angle diverging from the vertical.
6. A leveller bar according to at least one of Claims 1 to 5, characterized in that the coal-entrainment means (2) are fastened to the side walls (1) so as to be movable.
7. A leveller bar according to at least one of Claims 1 to 6, characterized in that the cross-sections of the coal-entrainment means (2) are made wedge-shaped or profiled in some other manner.
8. A leveller bar according to at least one of Claims 1 to 7, characterized in that the side walls (1) are made wedge-shaped or profiled in some other manner.
9. A leveller bar according to at least one of Claims 1 to 8, characterized in that the mounting and guide roller (8) of the leveller bar has a slope (7).
10. A leveller bar according to at least one of Claims 1 to 9, characterized in that the mounting and guide rollers (8) are designed so as to be laterally displaceable by a displacement device (9).
11. A leveller bar according to at least one of Claims 1 to 10, characterized in that the side walls (1) have openings (11).
12. A leveller bar according to Claim 11, characterized in that braces (12) are arranged in the openings (11) or braces (12) bound the openings (11) laterally.
13. A leveller bar according to Claim 12, characterized in that the braces (12) are arranged at an angle diverging from 0° with respect to the side walls (1).
14. A leveller bar according to at least one of Claims 1 to 13, characterized in that the side walls (1) of the leveller bar are enlarged towards the outside at their front end.
15. A leveller bar according to at least one of Claims 1 to 14, characterized in that the side walls (1) of the leveller bar have guide yokes (13) at their front end.
16. A leveller bar according to at least one of Claims 1 to 15, characterized in that the side walls (1) of the leveller bar have movable coal scrapers (15).
17. A leveller bar according to at least one of Claims 1 to 16, characterized in that fluid-supply lines (20) with nozzles (21) are arranged on the side walls (1).
18. A leveller bar according to at least one of Claims 1 to 17, characterized in that the leveller bar is sealed off by one or more sealing and guiding boxes (23).
19. A leveller bar according to Claim 18, characterized in that the sealing and guiding boxes (23) are provided with bearing shafts (26).
20. A leveller bar according to Claim 18, characterized in that the at least one sealing and guiding box (23) is provided with a housing (24).
21. A leveller bar according to at least one of Claims 1 to 20, characterized in that the coal-entrainment means (2) have openings (29, 30).

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