EP0063700A2 - Method of sealing doors of horizontal coke ovens and coke ovens with coke oven doors - Google Patents

Abstract

1. Coke oven equipped with coke oven doors to be pressed against the frame of the oven chamber and thereby providing a tight seal, the doors being provided with an interior face plate arranged in a certain distance from the door body by means of spacers, furthermore with a door-mounted knife-type seal including a safety repositioning device as well as with tightening elements acting on the door body and thus on the knife-type seal, characterized in that the door body (2) provided with said interior face plate (39, 120) is formed exclusively by an entirely resilient sealing plate (3) to which are arranged the supports (6) for the door removing equipment and locking bolts (9) as well as the peripheral, active tightening element (11) which tightly presses together the chamber frame (7), sealing plate, and knife-type seal (5) while influencing exclusively on the marginal areas of the sealing plate.

Description

The invention relates to a method for sealing horizontal chamber coking ovens from the atmosphere in the area of the coke oven doors closing the top sides by tightening the circumferential sealing edge and on the inside of a corking plate with a spacing between the cage plate and the latching hooks projecting on the chamber frame. The invention also relates to a coke oven with coke oven doors which close the head sides and which can be pressed against the chamber frame, which has a coking plate which is kept at a distance on the inside of the door body, a circumferential, spring-loaded sealing cutting edge with reset protection and pressure elements which influence the door body in order to carry out the method.

In the known methods for sealing the coke oven doors, the coke oven doors provided with a heavy stone plug and a sealing system are pulled out by operating machines from the opening of the coke ovens after unlocking, pivoted, cleaned and then reinserted and locked. The known coke oven doors consist of a heavy cast body or a correspondingly heavy welded construction, on which a ceramic stopper of about 0.4 m depth and a width corresponding to the furnace chamber is attached for thermal protection of the door body. This door construction has a weight of up to 1o t for a modern horizontal chamber coking furnace with large dimensions and is usually pressed onto the chamber frame by means of two locking hooks, which are actuated via spindle arrangements, which in turn is attached to the wall protection plates and anchor stands of the coke oven.

More recently, the heavy ceramic stoppers have been replaced by coking plates which are connected to the door body by means of spacers. By eliminating the ceramic stopper, there is a considerable reduction in the weight of the entire coke oven door, without this advantage having previously been used to limit the total weight of the door body itself.

The main task of the coke oven doors in general, as mentioned, is to close the side openings required for emptying the coke oven in a gas-tight manner during the coking process in order to secure the coking process and to avoid emissions to the atmosphere. For this purpose, the coke oven doors have all-round sealing edges, which are placed, for example, on sealing plates designed as membranes. The sealing plates and thus the sealing edges are pressed against the chamber frame with a contact pressure of approximately 10 kg / cm sealing edge length. Depending on the size or height of the coke oven, a contact pressure of 15 t and more is necessary to ensure sufficient tightness of the coke oven. This high contact pressure is transmitted from the door body to the chamber frame via the latch hook or latches. For this purpose spring pots or similar units are pretensioned when the door is put on, which must then apply the necessary contact pressure. Up to now, two such spring pots per door have been used in ovens of 5 to 7 m in height.

The well-known extremely heavy and largely insensitive to bending coke oven doors are used because, according to the current view, a uniform distribution of the contact pressure is not otherwise guaranteed. Although it is known that different temperature gradients lead to different bending lines of the door body and chamber frame, which bring about a relative movement between the door and the chamber frame during the coking process, attempts have been made to counter this process by using membrane seals as sealing elements can be pressed onto the door frame using a large number of small springs. In this way, attempts have been made to ensure a satisfactory seal even if the door body follows a different bending line than the chamber frame due to the thermal stress. However, all of these efforts have so far been unsuccessful. Rather, it has been shown that the coke oven doors provided with corresponding resilient membrane seals still do not allow compensation for the different bending line and thus a permanent one Do not ensure that the coke oven doors are sealed.

The invention has for its object to provide a method that provides a short-term adaptable and safe sealing of the coke oven to the respective course of the chamber frame and to propose a suitable coke oven with an easy-to-handle and sealable over greater adaptation paths coke oven door.

The object is achieved according to the invention in that the coke oven door equipped with rigid locking bolts is suspended from above into the locking hooks and the coke oven door / chamber frame is continuously actively tensioned over the entire length of the peripheral sealing surface.

With the aid of the method according to the invention, a coke oven door which is lightly constructed by the selected steel construction with coking plate can be hung up or hung in from the operating machine, so that it is in the same position in each case before the application of the clamping forces. The tensioning forces are only applied when the door is precisely fixed. The pre-stressed sealing blades, which are still a short distance from the chamber frame when hanging, are now guided against the furnace frame and then only clamped against the chamber frame at the edge and immediately above the sealing edge in the area of the all-round sealing surface of the coke oven door / chamber frame. The previous centrally arranged spring assemblies and the pivoting locking bolts can thus be dispensed with entirely. The door or the sealing plate is only stressed in the area in which a relative movement in the direction of the chamber frame is necessary in order to achieve the desired seal to lead. Because of the method and the design of the coke oven door and its suspension, high pressures can be applied without any problems, although these are considerably lower than the contact forces to be applied by the central spring pots or spring assemblies.

According to an embodiment of the invention, it is provided that the required contact pressure is generated linearly in the area of the locking bolts and locking hooks and is transmitted into the chamber frame. With such a transfer of the necessary pressure forces into the chamber frame, the door body can remain completely free of stiffening parts and can thus be made elastic overall. The door body itself is no longer required for the transmission of the pressure forces. The door body construction thus remains free of bending forces due to the thermal influence or can yield to it as necessary. In addition, this type of transmission of the contact pressure has the advantage that the transmission path is significantly shortened and can be applied precisely in a targeted manner.

Serves to perform the process, a coke oven door, the ückstellsicherung a held on the inside of the door body at a distance Verkokungsplatte, a rundumlaufenres sealing element _R and has the door body influencing the pressure elements, wherein the door body itself iegelbolzen as a continuous elastic sealing plate with retaining devices for the Türabhebeklauen, with _R and a pressure element is formed, which is arranged all around and influences the sealing plate only in the edge region on the edge of the sealing plate. Such a coke oven door is so elastic that bending forces due to thermal influences can no longer occur or only to a very small extent. It is thus possible, according to the method according to the invention, to introduce the necessary pressing forces in a targeted manner and precisely where they are required, due to the large number of connecting elements between the door body and the chamber frame and the assignment of the pressing element to the edge of the membrane or sealing plate. This ensures an absolutely even distribution of the contact pressure in exactly the area where the sealing between the chamber frame and the coke oven door takes place.

According to an embodiment of the invention, a coke oven door is particularly suitable for applying the necessary pressure forces, in which the pressure element is designed as a hollow body with a variable volume, which is enclosed by a U-profile cage arranged with the open side facing the sealing plate. Such a hollow body is particularly suitable for generating the necessary pressure forces and for transferring them in the desired uniform shape in terms of area or line.

A particularly expedient embodiment according to the invention is to be seen in the fact that the sealing plate is bent, bent and equipped with a U-professional cage according to the invention by the hollow body lying directly on the chamber frame and acting on it. Such a coke oven door advantageously represents a structural unit that only has to be supplemented by elements for attaching the door lifting claws and locking bolts. It is thus characterized by low manufacturing costs, favorable installation and maintenance conditions and, above all, when appropriate material is used for the hollow body, by completely closing off the coke oven from the atmosphere due to the relatively large sealing surface. The size or better the work surface of the support of the hollow body the chamber frame can be influenced by the shape of the hollow body or by its quality. With suitable units, the sealing surface can even be varied during operation, ie during the cooking process. To protect the pressure element and at the same time to even out the applied pressure, it is advantageous to arrange a distributor strip made of heat-insulating material between the hollow body made of heat-resistant material, which is designed to be pneumatically or hydraulically actuated, and the sealing plate. On this distributor strip, for example, the hollow profile rests a hose, so that it is protected from the more or less hot sealing plate and its shape and contact surface can be influenced by the shape of the distributor strip.

The U-profile cage is intended both to protect the hollow body and as an abutment, for which purpose it is arranged with the free web or flank ends resting on the sealing plate. The webs of the U-profile cage are slotted according to the invention or they have transverse slots so that the U-profile can easily adapt to the bending shape of the chamber frame. In addition, the U-profile cage is divided into partial lengths which are connected to one another via joints, so that it is given additional mobility in the direction of the furnace axis. In addition, the assembly and disassembly is much easier.

To achieve the resilient support of the U-profile cages or the pressure element is provided according to an embodiment of the invention that spring pressure cylinders are arranged on the U-profile cage at a distance from each other, which are supported on abutments connected to the sealing plate, for example Angle profiles attached adjustment angles with adjustable pressure screw. These angle profiles also serve to stop the holding device for the door lifting claws and to attach the foot pieces or the spacers of the coking plate. The setting angles are expediently arranged displaceably and fastened to the angle profile by means of a pressure screw. This results in a certain readjustment or presetting of the pressure forces of the spring pressure cylinders.

A particularly uniform transmission of the contact pressure and thus a good seal can be achieved according to the invention in that a large number of connecting elements is provided over the height of the door body or the chamber frame and is formed by locking bolts and locking hooks of the same design. So far, only two pairs of locking hooks and a rotatable locking bolt have been used in the known coke oven doors. From these few connecting elements, the door, which is up to 7 or more meters high or rather long, must be pressed evenly against the chamber frame. The numerous locking bolts and locking hooks distributed over the height of the door facilitate the application of the necessary contact pressure and ensure a uniform seal over the entire length of the coke oven door. It is advantageous to attach the locking hooks and locking bolts approximately 1/2 to 1 m apart.

A simple construction and at the same time reliable transfer of the contact pressures is achieved in that the locking bolts are correspondingly fastened to the U-profile cage with the locking hooks arranged on the chamber frame, running across the door body and extending to the U-profile cage or one over the entire length of the door body arranged central strut or the Locking device are arranged supporting. Various variants are proposed here, the last of which is particularly suitable for existing coke oven doors in which, for some reason, one cannot or does not want to do without the existing locking devices. The continuous design of the locking bolts leads to a further simplification of the construction, but can lead to difficulties when hooking in the coke oven door if the chamber frame is bent differently.

A significant reduction in cleaning work is achieved according to the invention in that the sealing cutting edge is arranged on the chamber frame, the inner edge of which is chamfered, or is part of the chamber frame. With such a design of the coke oven door, the inside of the sealing plate is preserved as a surface, so that any contamination that may still occur can be easily removed, while contamination can easily occur in the area of the chamber frame and the sealing cutting edge without this immediately leading to leaks. In addition, the chamfering of the inner edge of the chamber frame ensures that the coking gases are brought up to the sealing cutting edge with full heat, so that contamination and contamination, in particular due to graphite formation, cannot occur here.

In particular with new coke oven doors, as mentioned, it is advantageous to edge or bend the sealing plate at the edge and to arrange the hollow profile there. The locking bolts can be molded onto the arch or its outer wall or connected to it at its deepest point in the arch. In order to ensure that the hollow body assumes the intended position when the coke oven door is inserted, it is provided according to the invention that the hollow body is point-connected to the web of the U-profile cage or the deepest part of the arch.

The mobility of the sealing plate also in the region of the spacer pieces carrying the coking plate is achieved according to one embodiment in that the sealing plate is connected to the center strut designed as a carrier by means of the spacing pieces which are at a distance from one another and hold the coking plate. The contact surface between the foot piece or the spacers is thus kept very small, the edge region advantageously being unaffected by the foot piece. In this area, however, a deflection of the sealing plate is particularly favorable. Otherwise, the spacers or their foot pieces hardly influence the mobility of the sealing plate, because they are arranged at a large distance from one another over the length of the door body.

The slight influence on the deflectability of the sealing plate is particularly advantageous in that the sealing pieces and their foot pieces are rectangular and are connected to the sealing plate and the middle strut and on have a cover on the end opposite the foot piece, on each of which corresponding connection elements are provided with elements formed on the coking plate. This simultaneously creates an assembly and disassembly option for the entire coke oven door, but especially for the coking plate, which also allows any changes or additions during operation. The sealing plate made of a flexible steel is effectively protected from the high-temperature gases by the sealing plate being arranged between an insulating layer held by the foot pieces of the spacers and protected by a cover plate and door body or central strut. The insulating layer thus protects the sealing plate and door body at the same time.

Depending on the circumstances, i.e. in the case of particularly stressed chamber frames, it can be advantageous to expose the sealing plate directly to the hot gases in order to maintain their mobility and thus also the mobility of the sealing edges. For this purpose, the insulating layer is arranged between the sealing plate and the door body or central strut. The door body remains protected by the insulating layer, even if it consists only of the central strut, so that it is only necessary to choose a sealing plate which can absorb correspondingly high temperatures.

The invention is characterized in particular by the fact that a method is created which ensures a uniform and targeted application and introduction of the contact pressure. In addition, a coke oven door is created which is characterized by a very low weight, high elasticity, in particular in the transverse direction, and easy handling. Ins Particularly in connection with the coking plates with spacers attached to the inside of the door body, there is a gas-tight seal on the side openings of the coke oven, which contributes to a substantial reduction in emissions and immissions from the coking plants. With a considerable reduction in weight and the convenient handling of the coke oven doors, it is also possible to simplify the door lifting and operating machines. Because of the more favorable coking by the coking plate and vertical gas collecting spaces formed on the inside of the coke oven door as well as the uniform pressing of the sealing cutting edge precisely in the edge area, contamination of this area is simultaneously reduced or even completely prevented. The assignment of the sealing cutting edge to the chamber frame also contributes to this, since the flat sealing plate can then be cleaned without difficulty if necessary. This simplifies the much reduced cleaning work anyway, which contributes to a substantial protection of the coke oven door itself and to a reduction in the workforce.

• Fig. 1 eine perspektivische Darstellung des Randbereiches einer Koksofentür,
• Fig. 2 einen Querschnitt durch eine Koksofentür,
• Fig. 3 einen Längsschnitt durch eine Koksofentür mit einem als Hohlkörper ausgebildeten Andruckelement,
• Fig. 4 die Koksofentür gemäß Fig. 1 mit als Dichtelement wirkendem Hohlkörper,
• Fig. 5 die Koksofentür nach Fig. 2mit einer am Rand gekanteten Dichtplatte und
• Fig. 6 einen Längsschnitt in Teilansicht im Bereich eines Distanzstückes bzw. der Türtasche.

Further details and advantages of the subject matter of the invention emerge from the following description of the associated drawing, in which preferred exemplary embodiments are shown with the details and individual parts necessary for this. Show it:

• 1 is a perspective view of the edge area of a coke oven door,
• 2 shows a cross section through a coke oven door,
• Fig. 3 shows a longitudinal section through a Coke oven door with a pressure element designed as a hollow body,
• 4 the coke oven door according to FIG. 1 with a hollow body acting as a sealing element,
• 5 shows the coke oven door according to FIG. 2 with a sealing plate edged at the edge and
• Fig. 6 is a longitudinal section in partial view in the region of a spacer or the door pocket.

Fig. 1 shows a perspective view of an elastic coke oven door 1 in lightweight construction. The door body 2 of the coke oven door 1 is formed here only by the sealing plate 3 designed as a membrane, the angle profile 4 running parallel to the edge, and the sealing cutting edge 5. The sealing edge 5 is actually not part of the coke oven door 1, but rather the chamber frame 7. The angle profile 4 serves as a holding device 6 both for the holding claws (not shown) and for the pressure elements and their accessories. At the edge of the sealing plate 3, a plurality of locking hooks 8 and locking bolts 9 are provided as connecting elements between the door body 2 and the chamber frame 7.

A circumferential light frame designed as a U-profile cage 1 ₀ is hooked into the corresponding locking hooks 8 of the chamber frame 7 via the locking bolts 9. Since all other parts of the door body 2 are connected to this U-profile cage 10, a fastening or connection of the door body 2 to the chamber frame 7 is thus also achieved at the same time. The U-profile cage 1o can consist of short, approx. 0.5 to 1 m long individual pieces, which are connected by joints are connected. This gives the U-profile cage 1o a sufficiently large elasticity in the longitudinal direction and thus allows the sealing plate 3 or the entire coke oven door to adapt to the bends of the chamber frame 7.

Within the U-profile cage 1o is the pressure element 11, in the example shown a hydraulically or pneumatically operated hollow body 12. The hydraulic or pneumatic operation of the hollow body 12 causes the membrane or the sealing plate 3 against the sealing cutting edge 5 and the Chamber frame 7 pressed. The sealing plate 3, the cutting edge 5 and the chamber frame 7 thus form the gas-tight seal of the coke oven against the atmosphere. The special arrangement and design of the pressure element 11 leads to a uniform distribution of the required contact pressure over the entire length of the sealing cutting edge 5. The forces required for this are no longer transmitted via the door body 2, but rather directly via the locking bolts 9 and locking hooks 8 in the chamber frame 7 headed.

The U-profile cage 1o, as explained, encloses the hollow body 12 or the pressure element 11. Its flanks 14, 15 are provided with weakening slots transversely to their longitudinal direction in order to further increase their flexibility. The hollow body 12 rests in it on the distributor bar 17, which preferably consists of heat-insulating material in order to additionally protect the hollow body 12 from the heat emanating from the coke oven. The distributor bar 17 also serves to equalize the contact pressure. The lying in the U-profile cage 1 ₀ hollow body 12 is ge via the spring pressure cylinder 18 in each case in a predetermined position brought and held, the web ends 16 of the U-profile cage 1o at least at the beginning of the pressing process on the sealing plate 3.

The individual spring pressure cylinders each have an upper and a lower flange 19, 20 in which bores 21, 22 are arranged for the passage of the connecting screws. Within the spring pressure cylinder 18, the spring 24 is arranged, which brings the desired resilient connection between the rest of the door body and the sealing system. To adjust or readjust the spring 24, a setting angle 25 is provided as a connection between the spring pressure cylinder 18 and the angle profile 4, which is arranged so as to be displaceable via the elongated holes 28. The setting is effected via the pressure screw 27 guided in the cross piece 26.

The flanks 14, 15 of the U-profile cage 10 are slotted as mentioned, i.e. they have transverse slots 3o arranged at intervals. The guide bolts 31 in the region of the flanks 14, 15 can be inserted into recesses formed in the sealing plate 3 and thus make assembly easier by precisely specifying the predetermined position of the U-profile cage 10.

As can also be seen in FIG. 2, the sealing cutting edge 5 is arranged close to the inner edge 35 of the chamber frame 7 and is thus exposed to the hot gases. The opening 36 in the locking hook 8 is the locking bolt 9 adapted so far that it has a sufficient but not too large game. The hot gases are guided in the rest of the cavity or gas exhaust duct, which is formed between the door body or the sealing plate 3 and the coking plate 39 held at a distance from the door body by spacers 38. Fig. 2 illustrates that the gases each reach the area of the sealing cutting edge 5 without difficulty and without cooling beforehand. Therefore, there will be hardly any caking or dirt in this area. In addition, the inner edge 35 is chamfered for this.

3 shows a longitudinal section through one of the two furnace heads with the coke oven door inserted, the sealing plate designed as a membrane seal being loaded precisely in the area of the sealing cutting edge 112 via the all-round hollow bodies. The coke oven door is labeled 1 ₀ 1, while the oven frame, in front of which the door body lo3 is held via the locking device 1 ₀ 4, 1 ₀ 5, is labeled lo2. This is still a very complex construction. In contrast, the illustration shown in FIG. 4 is a lighter construction.

On the inside of the coke oven door 1 ₀ 1 contributes to Fig. 3, the membrane and the sealing plate 11o having formed in the edge area seal edge 111, 112. The sealing edge 111, 112 is charged via the spring 113, which in turn against the bottom 115 supports the cage 114, which is part of the coke oven door 1 ₀ 1. 5 shows the special arrangement of the pressure element 11 within the cage 114, it becoming clear that the adjustment device of the pressure element 11 is arranged within the cage 114 in a protected manner by the walls 116 being pulled up over the adjustment device.

On the inside of the door body lo7, the insulating layer 119 is also arranged over the distance Pieces 123, 124 is held on the door body lo3 or the sealing plate 11o. The spacers 123, 124 carry the coking plate 12o at the end, which consists of individual shields 125, 126, each of which is screwed or hidden to the shield holders 127. The bottom nozzle 128 is screwed to the actual door body lo3 example, keeping on the cover plate 121, the insulating layer 119 and simultaneously the sealing plate 11 _0th

Between the coking plate 12o and the cover plate 121 or actually the sealing plate 11o, the gas discharge duct 117 is formed, through which the gases released are discharged in the direction of the template.

The spacers 123 consist of the foot pieces 128, which are screwed together by means of fastening screws 129, 13o as well as FIG. 6, carry the shield holders 127 and thus the actual shields 125, 126. The individual shields have reinforcing ribs 131 on the underside , and bores 168, which are designed to correspond to the connecting elements 167 on the cover 166. As a result, the shields can be hidden during assembly with the spacers 123, 124 or the shield holders 127. A screw connection is also advantageous.

FIG. 4 shows an embodiment in which the sealing plate 3 is only designed to reach the chamber frame 7. This is followed by the U-profile cage 1 ₀ , in which the hollow body 12 is arranged. U-profile cage 1o and sealing plate 3 are welded to one another, screwed or otherwise connected, so that they form a structural unit and are connected to the chamber frame 7 via the locking bolts 9 in the locking hooks 8 can be.

The hollow body 12 rests on the chamber frame 7. Since this is approximately uniformly warm or hot, the hollow body is only exposed to limited temperatures, especially since the hollow body cannot be directly influenced by the hot gas. Fig. 4 illustrates that the hollow body 12 rests flat on the chamber frame 7, so an advantageously wide sealing surface is created.

It is particularly advantageous in the case of a hollow body acting as a “sealing cutting edge” that the cleaning work of the chamber frame 7 that was previously necessary is almost completely eliminated. If cleaning is necessary, flat surfaces are available that are easy to clean.

Fig. 5 illustrates the possibilities of building the door body from simple and light parts, the sealing plate 3 and the cage receiving the pressure element 11 being made from a plate by folding. The locking bolts 9 are molded onto the cages or, as indicated, are continuous and connected to them. The hollow body 12 or the pressure element 11 is preferably connected point by point to the cage in order to ensure correct positioning.

Claims (16)

1. A method for sealing horizontal chamber coking ovens from the atmosphere in the area of the coke oven doors closing the top sides by tensioning the circumferential sealing blade and on the inside a coke plate with a spacing in front of the coking plate between the door frame and the locking hook projecting from the door frame, characterized in that the rigid arranged bolt bolt fitted coke oven door from above into the bolt hooks and the entire length of the circumferential sealing surface of the coke oven door / chamber frame is actively tensioned throughout. 2. The method according to claim 1, characterized in that the required contact pressure is generated linearly in the region of the locking bolts and locking hooks and is transmitted into the chamber frame. 3. coke oven with coke oven doors that close the head sides and can be pressed against the chamber frame, which has a coking plate that is kept at a distance on the inside of the door body, an all-round sealing element with a back-up safety device and pressure elements that influence the door body for carrying out the method according to claim 1 and claim 2, characterized in that that the door body (2) is designed as a continuously elastic sealing plate (3) with holding devices (6) for the door lifting claws, with locking bolts (9) and a pressure element (11) which is arranged all around and influencing the sealing plate only in the edge area at the edge of the sealing plate is. 4. Coke oven with coke oven doors according to claim 3, characterized in that the pressure element (11) is designed as a hollow body (12) of variable volume, of from one arranged with the open side to the sealing plate (3) U-shaped cage (1 ₀ ) is enclosed. 5. coke oven with coke oven doors according to claim 3, characterized in that the sealing plate (3) is folded all the way to a U-profile cage (1o) in which the hollow body (12) lies directly on the chamber frame (7) and on it is arranged to act. 6. coke oven with coke oven doors according to claim 3 and claim 4, characterized in that between the hollow body made of heat-resistant material (12), which is designed to be pneumatically or hydraulically acted upon, and the sealing plate (3), a distributor strip (17) consisting of heat-insulating material is arranged. 7. coke oven with coke oven doors according to claim 3 and claim 4, characterized in that the U-profile cage (lo) is divided several times in the longitudinal direction into partial lengths connected by joints and has weakened flanks (14, 15) by transverse slots (3o) . 8. coke oven with coke oven doors according to claim 3 and claim 4, characterized in that on the U-profile cage (1 ₀ ) are arranged at a distance from each other spring pressure cylinders (18) which are supported on abutments connected to the sealing plate (3), for example on adjusting angles (25) attached to angle profiles (4) with adjustable pressure screw (27). 9. coke oven with coke oven doors according to claim 3, characterized in that over the height of the door body (2) or the chamber frame (7) distributed a plurality of connecting elements is provided, which are formed by the same locking bolts (9) and locking hooks (8) . 1 ₀ . Coke oven with coke oven doors according to claim 3 and claim 9, characterized in that the locking bolts (9) with the locking hooks (8) arranged on the chamber frame (7) are correspondingly attached to the U-profile cage (1 ₀ ), across the door body (2 ) extending and are supported on the U-profile cage or a center strut arranged over the entire length of the door body or the locking device (1 ₀ 4, 1 ₀ 5). 11. Coke oven with coke oven doors according to claim 3, characterized in that the sealing cutting edge (5) on the chamber frame (7), the inner edge (35) of which is chamfered, is arranged or is part of the chamber frame. 12. coke oven with coke oven doors according to claim 3 and claim 5, characterized in that the hollow body (12) is point-connected to the web of the U-profile cage (1 ₀ ). 13. Coke oven with coke oven doors according to claim 3, characterized in that the sealing plate (3, 11 ₀ ) on the simultaneously the coking plate (39, 12o) holding spaced-apart spacers (38, 123, 124) with the designed as a carrier Middle strut is connected. 14. coke oven with coke oven doors according to claim 3 and claim 13, characterized in that the spacers (38, 123, 124) and their foot pieces (128) are rectangular and are connected to the sealing plate (3) and central strut and at the foot piece opposite end have a cover (166), on which connection elements (167) corresponding to elements (168) formed on the coking plate (39, 12o) are provided. 15. coke oven with coke oven doors according to claim 3 and claim 13, characterized in that the sealing plate (3, 11 ₀ ) between one of the foot pieces (128) of the spacers (38, 123, 124) and protected by a cover plate (121) Insulating layer (119) and door body (2, 1 ₀ 3) or central strut is arranged. 16. Coke oven with coke oven doors according to claim 3 and claim 13, characterized in that an insulating layer (119) is arranged between the sealing plate (3, 11 ₀ ) and door body (2, 1 ₀ 3) or central strut.

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