EP0321642A1 - Porte de four à coke avec écran métallique - Google Patents

Porte de four à coke avec écran métallique Download PDF

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Publication number
EP0321642A1
EP0321642A1 EP88109176A EP88109176A EP0321642A1 EP 0321642 A1 EP0321642 A1 EP 0321642A1 EP 88109176 A EP88109176 A EP 88109176A EP 88109176 A EP88109176 A EP 88109176A EP 0321642 A1 EP0321642 A1 EP 0321642A1
Authority
EP
European Patent Office
Prior art keywords
rods
bars
door
strips
coke oven
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
EP88109176A
Other languages
German (de)
English (en)
Other versions
EP0321642B1 (fr
Inventor
Wolfgang Dr. Becker
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
Priority claimed from DE19873743156 external-priority patent/DE3743156A1/de
Application filed by Ruhrkohle AG filed Critical Ruhrkohle AG
Publication of EP0321642A1 publication Critical patent/EP0321642A1/fr
Application granted granted Critical
Publication of EP0321642B1 publication Critical patent/EP0321642B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C10B25/06—Doors; Door frames for ovens with horizontal chambers

Definitions

  • the invention relates to a coke oven door with a metal plate.
  • the invention is also based on this object.
  • the shield is composed of rods and / or strips and / or grids. While a host of others Developments take a different direction, namely that of a sign extending in one piece over the height of the coke oven door, the invention goes in the opposite direction, namely in the reduction in dimensions. The fear that this would give, with dimensions as extreme as those given by bars, strips and grids, that extreme heat deformation would occur, has not materialized. This is attributed to the fact that the bars, strips and grids are supported as much as possible over their length. Such support is not provided in the other known solutions. Rather, the known other shields rely on a two-point support or two-line support. Between these lines, these shields are subjected to considerable bending stress.
  • the support according to the invention is effected by a one-part or multi-part door box which is arranged behind the bars or strips or the grille.
  • the rods according to the invention can have a full profile or can be formed by a hollow profile.
  • the cross-sectional shape of the bars can be square, rectangular or round. Irregularly shaped cross sections are also conceivable.
  • the bars have a thickness of 10 to 30 mm. Bands differ from the bars by a significantly smaller thickness, namely 4 to 10 mm, and by a larger width, namely up to 100 mm.
  • the bars or strips can run transversely to the longitudinal direction of the door or in the longitudinal direction of the door.
  • fastening elements are optionally available for fastening seen that cover the bands or rods transverse to their longitudinal direction.
  • Such fasteners can in turn be formed by bands that are hinged to the back of the support or extend to the rest of the door body.
  • Thinner rods are also suitable as fastening elements, which reach into the rods forming the actual metal shield through corresponding openings.
  • the fastening elements can also be arranged laterally and have recesses into which the rods and / or strips are inserted in the longitudinal direction or into which the rods or strips are inserted from the front transversely to their longitudinal direction.
  • the individual rods or strips can also be suspended individually or in groups from the support.
  • the groups preferably have a height of 200 to 400 mm in the case of bars or strips running transversely to the longitudinal direction of the door.
  • these groups also correspond to elements of the box forming the support. These elements of the box forming the support then have the same overall height as the groups of bars or strips. Slits are preferably provided between the elements of the box forming the support. The slots are said to allow the entry of raw gas during the coking process.
  • Figures 5 to 8 show different mounting options for a metal plate made of rods.
  • the coke oven door consists of a power transmission unit 1 and a sealing unit 21.
  • the power transmission unit 1 is formed in Fig. 2 as a hollow profile frame 24, the longitudinal spars in Fig. 3 with 22 and the cross bars in Fig. 3 with 23.
  • the longitudinal bars 22 are open at the upper and lower ends. Furthermore, there are 4 openings in the longitudinal spars at the junctures to the transverse spars, so that heating air in the hollow profile frame 24 is unhindered from the transverse beams 23 into the longitudinal spars 22 and flow up there and can emerge from the hollow profile frame 24 at the top.
  • the hollow profile frame 24 shown in the exemplary embodiment according to FIG. 2 is provided with a multiplicity of pressure elements 28 which are rotatable in themselves.
  • these pressure elements 28 are composed of a movable sleeve 5, a spindle 3 fixedly connected to the sleeve 5 and a sprocket 2 fixedly attached to the spindle 3.
  • the spindle 3 is rotatably guided in a threaded sleeve 4 .
  • the threaded sleeve 4 according to Fig. 3 is firmly welded into the hollow profile frame 24 according to Fig. 2.
  • bolts 7 are welded to the outer flanks of the longitudinal spars 22 according to Fig. 3 and to the chamber frame 28 Fig. 3 adjustable hooks for receiving the bolts 7 attached.
  • the number of hooks 8 depends on the number of bolts 7 and is 6.
  • the number of bolts 7 depends on the furnace height. With a furnace height of 4 m, a total of 4 bolts are sufficient, in the arrangement of 2 at the top and bottom of the hollow profile frame 24 according to Fig. 2.
  • the pressing forces of the individual elements 28 according to Fig. 2 on the sealing unit 21 according to Fig. 3 is generated by a rotating chain hoist 27 according to Fig. 2. With this arrangement there is thus a constant force distribution over the power transmission unit 1 according to Fig. 2 to the sealing unit 21 according to Fig. 3 guaranteed.
  • the pivot point 30 according to FIG. 2 for moving the circulating chain 27 according to FIG. 2 can be transferred to each pressure element 28.
  • the torque required for point 30 is generated by a torque motor, which is not shown in the figure. This torque motor can be installed both directly on the power transmission unit 1 and on door operating machines which are present during operation.
  • the square hollow profile frame 24 shown in the exemplary embodiment according to FIG. 3 can be replaced by the choice of other profiles.
  • Geometries of commercially available profiles such as rectangular hollow profiles, U profiles, L profiles, double T profiles, tubular profiles and simple flat profiles allow the pressure elements 28 to be accommodated.
  • the sealing unit 21 consists of the sealing element 9 and an insulation 29.
  • the sealing element 9 forms a hollow body with the element 10.
  • Both elements 9 and 10 are made of a heat-resistant metallic material.
  • a thickness of between 2 and 4 mm per sealing element 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 do not differ significantly from one another in common furnace sizes.
  • the elements 9 and 10 have the same profile according to Fig. 3 and are firmly connected to each other. A loose arrangement of element 10 on element 9 is feasible.
  • the hollow body formed by the elements 9 and 10 can, on the one hand, be designed as closed and, on the other hand, can be made open via the element 10 towards the interior of the open.
  • the element 10 is formed with lateral slits or is open at the top and bottom in the vertical direction. This results in the possibility of expanding the two gas channels, formed by the shield construction 11 according to FIG. 3 and the side surfaces of the element 10, in order to expand the gas channel formed by the hollow body.
  • the gas channel is expanded by up to 100%. This expansion of the gas channel has a very positive effect on the static pressure behavior in the channel and therefore on the tightness of the door.
  • Fig. 1 the usual door foot does not apply to the door.
  • the inner element 10 according to Fig. 3 takes over the function of a door foot 35 due to its design.
  • a metal U-seal 14 is provided as an exemplary embodiment between the free leg 31 according to FIG. 3 and the sealing surface of the door frame.
  • the sealing unit 21 is held loosely by the power transmission unit 1 in the exposed state via brackets 12 and 25. In the inserted state, the brackets 12 and 25 become ineffective, so that the different rotational capacity due to the different temperature positions of the sealing unit 21 and the power transmission unit 1 is taken into account.
  • cross bars 34 are arranged between the bars 22. These cross bars serve as a lifting point of attack for the claws present on the door lifting machines, which are not shown in the drawings.
  • the "heat shield” 33 no longer consists, as usual, of flat, one-piece, heat-resistant metallic plates of different designs, but instead of a multiplicity of heat-resistant metallic round bars 11 of the same cross-section - arranged transversely to the furnace chamber - in front of the inner screed 10 according to Fig. 3 loosely attached via breakpoints 32.
  • the individual round bars between 20 and 30 mm thick are drilled through at two points to accommodate the suspension.
  • a flat surface is created over the furnace height to accommodate the coal front when filling the coke oven.
  • the individual rods 11 and the suspensions 32 behave in a more dimensionally stable manner at high temperatures, since both each rod can expand freely in the transverse direction to the furnace and the suspension rods in the vertical direction to the furnace.
  • other geometries of the rod construction with the same physical properties can be integrated, such as square, rectangular and strip-like shapes.
  • the one-piece rod construction according to Figs. 1 and 3 can also be carried out as a multi-part construction over the height of the inner screed 10. Furthermore, the rod construction also allows a rod guide in the vertical direction, not shown in the drawings. Here, the Bars guided in parallel as a continuous unit, held with cross bars distributed over the height.
  • the leveling door 36 according to Fig. 1 and 4 is designed in a circular construction.
  • the leveling box 14 designed as a tube according to Figure 4 takes up the sealing surface 15.
  • a metallic cover 16 is pressed in front of this sealing surface 15 via the force transmission frame 17 via bolts or springs 39.
  • the fixed points 19 and 20 become effective.
  • the fixed point 19 is designed as a hinge in order to pivot the leveling door 36.
  • the fixed point 20 is effective via a handwheel 37 with a spindle which is mounted in the joint 38.
  • each group has an overall height of 300 mm in the exemplary embodiment. All bars have a round cross-section.
  • the rod diameter is 20 mm.
  • the bars designated 50 there are drilled through, so that a 10 mm thick wire or bar can be passed through the individual bars 50 and bent over.
  • the individual rods 50 are held together by the rod designated 51.
  • the rods 50 can be hung on the rod 51 at the same time.
  • the suspension is otherwise the same as for the individual rods according to FIG. 1.
  • dash-dotted line 52 indicates the support line through elements 10.
  • Figure 6 shows rods 60 with a round cross-section and 15 mm in diameter.
  • the rods 60 are held in side plates 61.
  • the sheets 61 are provided with bores into which the rods 60 are inserted in the longitudinal direction.
  • the rods 60 form with the sheets 61 elements which are hung on hooks 62.
  • the embodiment according to Figure 8 differs from that according to Figure 6 in that the rods are not inserted in the longitudinal direction but are inserted transversely to their longitudinal direction from the front into sheets 80 which have hook-shaped depressions 82 for the rods denoted by 81.
  • All bars have in common that they hang loosely one below the other. - that compared to the previously known, one-piece protective shields made of heat-resistant metallic material, the shape gives a much higher dimensional stability even at the usual high coke oven temperatures, - That the round bar construction is not a welded construction. that other geometries of the rod construction can be implemented with the same physical properties, for example square, rectangular or geometric shapes, - that the bars represent commercial profiles, - That the one-piece rod construction also allows a rod guide in the vertical direction, seen parallel to the inner screed over the height.
  • the "shield" according to the invention is lighter overall than known flat one-piece plate designs and with sufficient bending rigidity - That due to the lightweight design and the trouble-free manufacture, the construction is cheaper than the usual designs.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
EP88109176A 1987-12-19 1988-06-09 Porte de four à coke avec écran métallique Expired - Lifetime EP0321642B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3743156 1987-12-19
DE19873743156 DE3743156A1 (de) 1987-08-03 1987-12-19 Koksofentuer mit metallschild

Publications (2)

Publication Number Publication Date
EP0321642A1 true EP0321642A1 (fr) 1989-06-28
EP0321642B1 EP0321642B1 (fr) 1991-04-24

Family

ID=6343018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109176A Expired - Lifetime EP0321642B1 (fr) 1987-12-19 1988-06-09 Porte de four à coke avec écran métallique

Country Status (2)

Country Link
EP (1) EP0321642B1 (fr)
DE (1) DE3862579D1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3440312A1 (de) * 1984-01-05 1985-07-25 Ruhrkohle Ag, 4300 Essen Schutzschild fuer koksofentuer
DE3528511C1 (de) * 1985-08-08 1986-08-14 Carl Still Gmbh & Co Kg, 4350 Recklinghausen Leichtbaukoksofentuer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3440312A1 (de) * 1984-01-05 1985-07-25 Ruhrkohle Ag, 4300 Essen Schutzschild fuer koksofentuer
DE3528511C1 (de) * 1985-08-08 1986-08-14 Carl Still Gmbh & Co Kg, 4350 Recklinghausen Leichtbaukoksofentuer

Also Published As

Publication number Publication date
DE3862579D1 (de) 1991-05-29
EP0321642B1 (fr) 1991-04-24

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