EP0114183A2 - Porte pour four à coke à chambres horizontales - Google Patents

Porte pour four à coke à chambres horizontales Download PDF

Info

Publication number
EP0114183A2
EP0114183A2 EP83107776A EP83107776A EP0114183A2 EP 0114183 A2 EP0114183 A2 EP 0114183A2 EP 83107776 A EP83107776 A EP 83107776A EP 83107776 A EP83107776 A EP 83107776A EP 0114183 A2 EP0114183 A2 EP 0114183A2
Authority
EP
European Patent Office
Prior art keywords
coke oven
sealing
oven door
door according
sealing element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83107776A
Other languages
German (de)
English (en)
Other versions
EP0114183A3 (en
EP0114183B1 (fr
Inventor
Wolfgang Dr.-Ing. Becker
Heinz Tewes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RAG AG
Original Assignee
Ruhrkohle AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ruhrkohle AG filed Critical Ruhrkohle AG
Publication of EP0114183A2 publication Critical patent/EP0114183A2/fr
Publication of EP0114183A3 publication Critical patent/EP0114183A3/de
Application granted granted Critical
Publication of EP0114183B1 publication Critical patent/EP0114183B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B25/00—Doors or closures for coke ovens
    • C10B25/02—Doors; Door frames
    • C10B25/16—Sealing; Means for sealing

Definitions

  • the invention relates to a coke oven door for a horizontal chamber coking furnace with a highly heat-resistant door plug projecting into the furnace chamber and connected to the door body, by means of which the furnace filling is kept at a distance from the door body.
  • the stopper has a multiple function together with the coke oven door. It is designed to hold back the furnace filling during coking operation, minimize the heat load on the door body and ensure gas extraction to the gas collection chamber in modern coking ovens.
  • the door body itself forms the abutment for the stopper and also has the task of tightly closing the opening in the door frame.
  • the invention is also based on the object of eliminating the leaks occurring on coke oven doors.
  • the invention is based on the consideration that an uneven heating of the coke oven door takes place during the coking process. Inevitably this must result in a warping of the coke oven door.
  • the effects of warping increased with increasing furnace height and door length.
  • each material reinforcement causes deformations to increase with increasing differences in the temperature gradient.
  • a lifting of the door body is counteracted by the locking pressure of the two locking devices usually provided for each coke oven door. These locking devices grip the coke oven door in the upper and lower third of the door and press the door against the door frame with a force of up to 15 months.
  • the thermal effects on the oven door are therefore switched off if possible, insofar as the heating can lead to warping of the oven door.
  • the coke oven doors are designed in several parts according to the invention with a separate power transmission unit and separate sealing unit and the power transmission unit and the sealing unit are connected to one another via as few points as possible, ie have as few heat transfer points as possible.
  • the connection points or heat transfer points are limited to 1-2 articulation points or brackets, at which the sealing unit is held in the power transmission unit when the furnace door is inserted and removed, and pressure points at which the power transmission unit holds the sealing element of the sealing unit during the Coking process presses against the door frame.
  • the sealing unit can be locked with auxiliary devices.
  • auxiliary devices are located on the door lifting device of the coke oven operating machine.
  • the auxiliary devices can act electromagnetically, mechanically, hydraulically or pneumatically.
  • the oven door according to the invention enables the use of only one locking device. This has corresponding cost advantages.
  • Any mechanisms are suitable for direct handling of the sealing unit with the door lifting device. Claws, hooks or electromagnets attached to the door lifting device are particularly suitable.
  • the separate design of the sealing unit and power transmission unit according to the invention can also be referred to as a door-in-door construction, with one door of this construction having only the sealing function and the other door of this construction alone having the power transmission functions.
  • this doubling of the door construction does not lead to an expected doubling of the material expenditure, but opens up a way to extremely lightweight construction.
  • the sealing unit, as the door intended for the sealing can dispense with special moments of resistance against bending and corrosion.
  • the sealing unit should be as soft as possible. This has the additional advantage of being particularly easy to adapt to the door frame with which the sealing unit is to seal.
  • the heat load on the sealing unit is not a hindrance to the soft design of the sealing unit.
  • the temperature requirements for a sealing element made of steel pose no problems. This is all the more true since the sealing element can be provided with insulation on the furnace chamber side. Even the simplest structural steel has proven to be applicable.
  • the sealing element can be designed as a flexible wall a few millimeters thick. Such a flexible wall adapts to every door frame shape. I.e. it can be brought into contact with the door frame with minimal force.
  • this enables a lightweight construction with a welded steel construction made of standard steel profiles.
  • hollow profiles such frames have optimal rigidity.
  • the frames according to the invention can be excellently ventilated, in which the longitudinal spars are open at the top and bottom and, if possible, openings are also provided at the connection points between the transverse spars and the longitudinal spars.
  • the longitudinal bars act like chimney draft. The resulting air flow creates excellent cooling.
  • the lightweight construction for coke oven doors that opens up according to the invention shows unexpected weight savings. Compared to conventional cast bodies, the weight of doors according to the invention can be reduced by two thirds, in extreme cases by three quarters.
  • a coke oven door consists of a power transmission unit 1 and a sealing unit 2.
  • the power transmission unit 1 is designed as a hollow profile frame 3, the longitudinal bars of which are designated by 4 in FIG. 2 and the transverse bars of which are designated by 5 in FIG.
  • the longitudinal bars 4 are open at the upper and lower ends. Furthermore, there are openings in the longitudinal spars at the connection points to the transverse spars 5, so that heating air in the hollow profile frame 3 can flow freely from the transverse spars 5 into the longitudinal spars 4 and there upwards and can emerge from the hollow profile frame 3 at the top.
  • the hollow profile frame 3 is made of commercially available square hollow profile made of steel of quality S t 37, which has the dimensions 80 mm x 40 mm and a wall thickness of 4 mm.
  • the hollow profile frame can also consist of other profiles such as, for example, hollow round profiles, L profiles, I profiles, T profiles and U profiles. These can be commercially available rolling profiles or welding profiles.
  • the profiles can also be used in various installation positions. This applies in particular to the U-profiles.
  • the door shown in the exemplary embodiment according to Figures 1-3 is for retrofitting existing 6 m high horizontal chamber coking ovens provided, the original doors are provided with two locking devices 6, which are moved together via a locking rod 7.
  • the locking devices are actuated by a lever mechanism (not shown) on the door lifting device.
  • the locking devices 6 with their locking plates 8 are each screwed to plates 72, which are welded at the top and bottom with cross bars 5 of the hollow profile frame 3.
  • compensating plates 73 are provided, which are aids for adjustment the locking unit on the not shown fixed locking hooks on the chamber frame.
  • the transverse bar 5 underneath is provided with a recess at 61. Furthermore, 5 stiffening ribs 62 are provided between the locking devices 6 undrlem each transverse bar below.
  • An articulated fork 9 is also welded to the upper cross member 5 welded to a locking plate 8.
  • the joint fork comprises an eye 10 attached to the sealing unit 2.
  • the eye 10 and the joint fork 9 together with a joint pin 11 form an articulated mounting of the sealing unit 2 on the power transmission unit 1.
  • the sealing unit 2 is on two Hinge points held in the power transmission unit 1.
  • the sealing unit 2 consists of a sealing element 12 and an insulation 13.
  • the sealing element 12 is produced from a commercially available panel profile 6 mm thick shown in Figure 16 to the length of the free leg designated in Figure 16 and Figure 3 with 14.
  • a thickness between 4 and 7 mm is provided.
  • the overall height of the furnace and its width have no influence on the thickness, since the restoring forces of the furnace filling per unit area do not differ significantly from one another for common furnace sizes of 4 to 8.5 mm.
  • the resulting total pressure is taken into account differently by a corresponding number, depending on the furnace height.
  • the sheet profile was cut to length at the upper and lower ends 15 and 16 at the points designated 17 so that folding to the profile shape of the edge shown in FIG. 3 and welding to the other edges of the sheet profile is possible.
  • the parallel course of the free leg 14 relates to the sealing surface of the door frame 18, designated by 20.
  • the parallel free leg 14 merges according to Figures 3 and 16 with an inclined web into the rest of the panel profile.
  • the bulge thus given is filled with insulating material.
  • Mineral fibers or ceramic fibers, glass fibers or also lightweight building blocks made of refractory material come into consideration as insulating material.
  • the material is either chosen so that the insulation 13 carries a suitable plug via a door plug holder 21 shown in FIG. 3, or the insulation 13 is penetrated by suitable anchors for the door plug holder 21.
  • suitable anchors for the door plug holder 21 For example, screw anchors that are screwed or welded in the sealing element 12 or that penetrate the sealing element 12 and are secured behind the sealing element with nuts, or bracket, are suitable as anchors.
  • the brackets can consist of cut-to-length L-profiles, which are welded to the inclined profile web of the sealing element 12 at a distance from one another such that one leg runs parallel to the sealing surface 20. In this leg, the holder can be made in the same way as with direct attachment to the sealing element 12.
  • the door plug holder shown can have any shape.
  • Metallic or non-metallic lightweight plugs are preferably provided for the furnace door according to the invention. In a metallic design, the door plugs then optionally have plates that overlap on the door from top to bottom stopper holder 21 are hung or secured in another way by bolt connection or plug connection via screw connections on the door stopper holder 21.
  • the sealing element 12 is pressed by the hollow profile frame 3 on the free leg 14 via screw bolts 22 against the sealing surface 20 of the door frame 18.
  • a screw nut 23 is welded on the side of the hollow profile frame 3 facing the door frame 18 for each screw 22 and the hollow profile frame 3 is drilled through in such a way that the screw 22 can be screwed into the screw nut 23 from the outside through the inside of the bars.
  • the screws 22 are secured by lock nuts 24 in the respectively required pressing position.
  • a large number of other screws 22 which are evenly distributed on the hollow profile frame 3 are also provided.
  • the distance between the individual screws is 100 mm in the exemplary embodiment and can be chosen as small as desired.
  • the upper limit of the screw spacing is 250 mm. At such a distance, it is possible to use the screws 22 to effect a completely uniform pressing of the sealing element 12 on the sealing surface 20.
  • Each screw of the embodiment can be retightened by hand with a wrench, thus eliminating any irregularity in the contact pressure of the power transmission unit 1 in the closed position of the coke oven door.
  • a torque wrench is advantageous as a wrench.
  • a manual setting can also be sufficient.
  • a continuous flat iron can also be welded to the hollow profile frame, which has corresponding threaded holes with the screws 22.
  • each screw 22 is pressed in the exemplary embodiment onto an intermediate layer 25 fastened to the sealing element 12.
  • the intermediate layer is made of metallic or non-metallic material and is easily replaceable.
  • a non-metallic intermediate layer has thermal advantages.
  • the intermediate layer 25 made of non-metallic, flexible material, the intermediate layer facilitates movement of the free leg 14 caused by thermal expansion of the sealing element.
  • the intermediate layer 25 ensures that the sealing element 12 can continue to be used even after the screw 22 has been incorporated into its contact surface. This is done by replacing the intermediate layer 25.
  • the intermediate layer 25 can be welded as a steel piece to the sealing element 12 or can be inserted as a separate part in a ring holder or other shaped holder welded to the sealing element 12 for this purpose.
  • a soft seal 26 is provided between the free leg 14 and the sealing surface 20 of the door frame 18.
  • the soft seal consists of mineral fibers or heat-resistant plastic and is held on the free leg 14 of the sealing element 12 via an edge protector 27 which is in turn attached to the free leg 14.
  • the edge protector 27 has the shape of an angle and, in the starting position, only partially encompasses the soft seal 26 on the narrow side facing the plug, so that pressing on the sealing element 12 leads to the edge protector 27_ as a strip running all around on the free leg 14 with deformation the soft seal 26 is protective against the narrow side facing the plug. In this state, the edge prevents.
  • the edge protection 27 a sooting of the soft seal by condensing coke oven gases during the coking operation on the soft seal 26, which also runs in the free leg 14. Furthermore, the edge protection 27 prevents excessive pressure and associated damage to the soft seal 26 by contacting the sealing surface 20 of the door frame 18 and in the event of a fault associated securing of distance of the free leg 14. Normally, the edge protection serves to pre-separate the condensing raw gases.
  • the edge protector 27 is welded, riveted or screwed to the free leg 14 as a circumferential steel bar.
  • the closing contact of the sealing element 12 against the sealing surface 20 with recesses 28 on the rear side of the sealing element 12, which is decisive for the sealing of the coke oven door, is advantageously influenced.
  • the cross-sectional change associated with the recesses 28 results in a high flexibility of the sealing element 12.
  • recesses running transversely to the longitudinal direction of the door can also be arranged between the recesses 28 already present.
  • the cross-sectional shape of the recesses can then be dimensioned much smaller than that of the recesses 28.
  • the recesses are produced by burning out or sawing out or milling the sealing element 12 on the bulged rear side. The opening thus created is closed by sheets which are adapted to the contour of the opening, so that the sealing element 12 regains a closed rear side.
  • the sealing element In the closed position shown in Figures 1 and 3, the sealing element is pressed against the chamber frame by the force transmission unit 1 or the hollow profile frame 3 exclusively by means of the screws .22.
  • the sealing element 2 At the articulation points of the cross bars 5 with the sealing unit 2, there is sufficient articulation play of 5-15 mm plus the amount of thermal expansion which results at the articulation point the sealing element 2 a lifting of the hinge pin 11 from the bearing surfaces in the joint fork 9.
  • This lifting is extremely advantageous in that it creates a heat-insulating air gap between the bearing surfaces in the joint and further reduces the thermal load on the hollow profile frame.
  • the bearing surface of the hinge pin 12 is also formed by an elongated hole running in the longitudinal direction of the furnace door. This elongated hole arises from the fact that the thermal expansion of the sealing element to be taken into account in the longitudinal direction of the furnace is substantially greater than transverse to the longitudinal direction of the furnace.
  • a releasable coupling is optionally provided instead of the joint shown in FIGS. 1 to 3. Electromechanical and mechanical couplings that are released in the closed position are suitable for this.
  • FIG. 4 shows a further coke oven door according to the invention, which differs from that according to FIGS. 1-2 by a different shape of the sealing element 12.
  • the web designated by 29 in Figure 4 runs between the free leg 14 and the rear designated 30 of the sealing element 12 exactly perpendicular to the sealing surface 20. This has direct effects on the flexibility and the movement behavior of the sealing element during the closing process.
  • flexibility and movement behavior of the sealing element are influenced by an S-shaped - or similar to a sine line between the free leg 14 and the rear 30 extending web 31.
  • Figure 5a shows a modified channel density 74 with a small profile depth. This profile is created by folding a sheet and allows a variable design of the profile depth or avoids recesses for the locking devices if existing devices have to be used.
  • the sealing element 12 is designed as a flat sheet 32 according to Figure 6.
  • FIG. 7 shows another coke oven door according to the invention, which has spring-mounted bolts 33 instead of bolts 22.
  • the associated springs 33 are arranged in the spars 4 and 5 on the bolt 33.
  • the one spring end is supported on a spar surface, while the opposite spring end acts against a disk 35 arranged on the bolt 33, which, optionally with a suitable part of the interior of the spring, to a small extent, for. B. 10 mm, filling and the spring centering collar is provided.
  • the disk 35 can rest against a collar (not shown) of the bolt 33 at the end facing away from the spring 34. This results in an attachment of the spring 34 and the washer 35 in the spars 4 u. 5 of the hollow profile frame and subsequent insertion of the bolts 33.
  • the bolts can then be secured against falling out in a simple manner by means of pins at the inserted end.
  • a replaceable sealing strip preferably made of steel, is provided in a further exemplary embodiment.
  • the sealing strip bears the designation 36 and is screwed all round to the free leg 12 of the sealing unit 2.
  • the sealing strip 36 has an angular cross section and presses it with the smaller leg against the associated sealing surface of the door frame designated here by 37.
  • Figure 9 shows another embodiment with a similar, but lower in height sealing strip 38 than the cutting-like sealing strips in conventional coke oven doors.
  • the free leg 14 of the sealing element 12 is edged at the outer end 39. This gives sufficient design freedom for screwing the sealing strip 38, which is therefore just as exchangeable as the sealing strip 36 according to Figure 8.
  • the screw bolts 22 act against the upstanding and flush ends of the sealing strip 38 and the free leg 14 This results in a force introduction of the screw contact force into the sealing strip 38 that is as central as possible.
  • FIG. 10 there is a further exemplary embodiment with an intermediate layer 25 and an exchangeable labyrinth seal between the free leg 14 and the sealing surface 40.
  • the labyrinth seal is provided by two on the free leg 14
  • Sealing unit 2 circumferential U-profiles made of metallic or non-metallic material.
  • the U-profiles are preferably individually screwed to the free leg 14 and are therefore interchangeable and are pressed with the open side against the sealing surface 14.
  • the U-profiles are labeled 41.
  • a seal 42 is provided between the free leg of the sealing unit 2 and the sealing surface 40 of the door frame.
  • the seal 42 has the character of a spring which is compressed during the sealing process to the U-shape shown in Figure 11.
  • the flexible legs of the seal 42 then lie against the free leg 14 and the sealing surface 40 and the closed end of the U-profile faces the furnace chamber.
  • Figure 12 shows another sealing unit according to the invention with a novel seal.
  • This seal consists of soft material 43, which is surrounded by a circumferential sleeve 44.
  • the sleeve 44 is interchangeably screwed to the free leg 14 of the sealing element 12.
  • the sleeve 44 gives the soft material 43 sufficient at the same time Stop and with its arching on the side facing the inside of the oven, protection against escaping coke oven gases.
  • a sleeve 75 is provided instead of the sleeve 44.
  • the sleeve 75 is so wide open at the outer end that an exchange of the seal (soft material 43) is possible at any time, but at the same time a sufficient hold is guaranteed. The hold is already achieved with a slight upturn.
  • the free leg 14 of the sealing element 12 can also be folded against the door frame at the end denoted by -45, so that the bent end 45 forms a sealing strip integral with the sealing element 12.
  • the sealing element is made of several parts. It consists of a separate free leg 46 which forms an angular profile in cross section and forms a circumferential frame in the overall view as in Figure 2.
  • the separate leg 46 includes a stop surface and rear side 47, which forms the bulge of the sealing element.
  • the free leg 46 forming the frame and the rear side 47 forming the bulge are screwed together at 48.
  • Figure 15 shows the application of the principle shown in Figure 14 for the multi-part design of the sealing element when applied to the sealing element shown in Figure 4.
  • the free leg is labeled 49 and the back 50.
  • Figures 16-19 show commercial profiles that are suitable for use as sealing elements.
  • the profiles according to FIG. 16 are so-called board profiles, while the profiles according to FIGS. 17 and 18 are light profiles and the profiles shown in FIG. 19 are known as channel boards.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP83107776A 1983-01-21 1983-08-08 Porte pour four à coke à chambres horizontales Expired EP0114183B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3301877 1983-01-21
DE3301877 1983-01-21

Publications (3)

Publication Number Publication Date
EP0114183A2 true EP0114183A2 (fr) 1984-08-01
EP0114183A3 EP0114183A3 (en) 1986-02-19
EP0114183B1 EP0114183B1 (fr) 1988-03-09

Family

ID=6188799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107776A Expired EP0114183B1 (fr) 1983-01-21 1983-08-08 Porte pour four à coke à chambres horizontales

Country Status (8)

Country Link
EP (1) EP0114183B1 (fr)
AU (1) AU565638B2 (fr)
BR (1) BR8306726A (fr)
CA (1) CA1245596A (fr)
DE (1) DE3375927D1 (fr)
PL (1) PL138855B1 (fr)
SU (1) SU1505443A3 (fr)
ZA (1) ZA835098B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321719A1 (fr) * 1987-12-23 1989-06-28 Ruhrkohle Aktiengesellschaft Porte de four à coke
EP0321640A1 (fr) * 1987-12-19 1989-06-28 Ruhrkohle Aktiengesellschaft Porte de four à coke d'une construction avec écran

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE562494C (de) * 1929-03-03 1932-10-26 Heinrich Koppers Akt Ges Koksofentuer mit Selbstdichtung
FR736303A (fr) * 1931-08-21 1932-11-22 Porte sans lut pour four à coke
EP0058320B1 (fr) * 1981-02-17 1985-05-02 WSW Planungs-GmbH Procédé de cokéfaction de charbon et four à coke pour la mise en oeuvre du procédé
DE3211004A1 (de) * 1981-11-13 1983-09-29 WSW Planungsgesellschaft mbH, 4355 Waltrop Elastische koksofentuer ii

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321640A1 (fr) * 1987-12-19 1989-06-28 Ruhrkohle Aktiengesellschaft Porte de four à coke d'une construction avec écran
EP0321719A1 (fr) * 1987-12-23 1989-06-28 Ruhrkohle Aktiengesellschaft Porte de four à coke

Also Published As

Publication number Publication date
AU2361684A (en) 1984-07-26
AU565638B2 (en) 1987-09-24
CA1245596A (fr) 1988-11-29
PL138855B1 (en) 1986-11-29
ZA835098B (en) 1984-04-25
EP0114183A3 (en) 1986-02-19
PL244287A1 (en) 1984-09-24
EP0114183B1 (fr) 1988-03-09
SU1505443A3 (ru) 1989-08-30
DE3375927D1 (en) 1988-04-14
BR8306726A (pt) 1984-11-13

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