EP0163773B1 - Porte de four à coke à chambres horizontales - Google Patents

Porte de four à coke à chambres horizontales Download PDF

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Publication number
EP0163773B1
EP0163773B1 EP19840116214 EP84116214A EP0163773B1 EP 0163773 B1 EP0163773 B1 EP 0163773B1 EP 19840116214 EP19840116214 EP 19840116214 EP 84116214 A EP84116214 A EP 84116214A EP 0163773 B1 EP0163773 B1 EP 0163773B1
Authority
EP
European Patent Office
Prior art keywords
coke oven
sections
door according
oven door
shield
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.)
Expired
Application number
EP19840116214
Other languages
German (de)
English (en)
Other versions
EP0163773A3 (en
EP0163773A2 (fr
Inventor
Wolfang Dr. Ing. 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 DE19843440312 external-priority patent/DE3440312A1/de
Priority claimed from DE19843440311 external-priority patent/DE3440311A1/de
Application filed by Ruhrkohle AG filed Critical Ruhrkohle AG
Publication of EP0163773A2 publication Critical patent/EP0163773A2/fr
Publication of EP0163773A3 publication Critical patent/EP0163773A3/de
Application granted granted Critical
Publication of EP0163773B1 publication Critical patent/EP0163773B1/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
    • C10B25/06—Doors; Door frames for ovens with horizontal chambers

Definitions

  • the invention relates to a coke oven door for a horizontal chamber coking oven with a one-piece or multi-part protective shield, which at the same time serves as heat protection and protrudes into the oven chamber and is connected to the door body, by means of which the oven filling is held at a certain distance from the door body, the door body being held during the Coking process is pressed against the door frame of the furnace with at least one locking device.
  • Such coke oven doors are also included in DE-A-33 27 337. This proposal is aimed at a novel design of the door body with the associated sealing device.
  • the new door body is characterized in particular by its lightweight construction, price advantages compared to conventional doors and by its high, permanent sealing effect. According to P 33 27 337.5, the new door body is partially combined with conventional fire-resistant door plugs.
  • DE-C-238 363 also discloses a door for coke ovens with an adjustable protective shield attached to the rear wall, the protective shield being connected to the rear of the door by articulated intermediate members and being able to move relative to the door.
  • the protective shield connected by articulated intermediate elements to the rear of the door should be lockable from the outside in its respective position by an adjusting device.
  • the protective shield is designed as a flat, one-piece plate with rear stiffening ribs.
  • the usual heights of coke ovens were 1.5 to 2 m. With such low door heights, the overall deformation of the protective shield may still be within the tolerance range. With today's coke oven heights of 4 m, 6 m and in the future 8 m and more, the overall deformation of the protective shield would either lead to openings between the furnace sole and protective shield and between the protective shield and chamber walls such that excessive amounts of coal penetrate between the protective shield and the door body. This would affect dry coking coal. especially preheated coal, still significantly strengthened.
  • US-A-4 086 145 It attempts to counteract the faults by connecting and supporting the protective shield on the furnace body as intensively as possible.
  • the protective shield is connected to the door body via at least one web running the entire length of the protective shield.
  • support rods are provided on both sides of the web.
  • two webs running at a distance from one another are provided, which are additionally stiffened by lateral ribs.
  • this solution has above all thermal disadvantages, in that contact heat is conducted through the webs, ribs and support rods into the door body. The associated heating of the door body easily leads to undesirable leaks.
  • a protective shield is shown there, which is constructed in a scale-like manner, i.e. H. consists of a large number of smaller, overlapping individual parts. Each item is attached separately. The smaller individual parts are subject to the same overall thermal expansion as a one-piece protective shield. The absolute degree of thermal expansion of each individual part is, however, much lower than that of a one-piece protective shield. Due to the individual suspension of the various individual parts and the overlapping arrangement of the individual parts, the thermal deformation of each individual part does not have an excessive effect on the other individual parts. The total heat deformation is within acceptable limits.
  • the invention further assumes that in a coke oven not filled with coking coal or in a protruding coke oven (the coke pressing has been delayed) the protective shield used heats up to such an extent in a short time that increased heat radiation via the protective shield unhindered both on the door body and also acts on the chamber frame.
  • the effect of heat leads to uncontrolled deformation on the one hand on the conventionally cast door body (thereby causing door leakage) and on the other on the chamber frame. Due to the increasing bending of the chamber frame, the frame joint between the masonry and the chamber frame is exposed on the chamber frame. A so-called frame joint leakage occurs.
  • the invention takes into account the fact that, at the usual coke oven temperatures, the protective shield explained above tends to warp continuously over the height of the coke oven due to its geometry as a flat, one-piece surface. This causes the already explained risk that when a coke oven door is inserted or removed, the protective shield will cling to the oven walls and be torn off. The consequences are also damage to the furnace walls. Furthermore, the distortion of the shield that occurs increases the opening width of the two gaps between the shield and the coke oven walls. This increases the unwanted amount of coal in the raw gas channel. With low water contents (less than 10% by weight H 2 0) of the input coal mixture, the coal accumulation in the expanded raw gas channel is particularly large.
  • coal leads to disadvantages of the uncontrolled formation of condensate in the area of the door seal due to the low head temperatures or forms a semi-coke plug of different heights, which has to be removed manually and time-consuming by the operating personnel after each furnace run.
  • the one additional shield creates two raw gas channels, which can be called the inner, coke-side raw gas channel and the outer, door body-side raw gas channel. With several additional shields, more raw gas channels are created.
  • the raw gas discharge quantity can be controlled or equalized in such a way that the raw gas pressure on the sealing surface between the coke oven door and the chamber frame is optimized in the measurable positive range.
  • the heat radiation of the door body to the outside is reduced by the protective shield facing the door body acting as an crane.
  • additional protective shields ecranes
  • the high heat radiation which arises is kept away from the door body and from the chamber frame, in particular by the Purization effect in the case of protruding or empty coke ovens.
  • the Compization effect ensures a uniform temperature drop along the head masonry, starting from the protective shield in contact with the coal or coke towards the door body.
  • the wall thicknesses of the protective shields according to the invention can be made considerably thinner than known protective shields. This has two main advantages: firstly, that reduces the temperature gradient in the above sense, secondly, the invention is moderate protective shields with sufficient dimensional stability overall lighter than the known protective shields.
  • connection of the same protective shields is particularly advantageous. According to the invention, these are then preferably arranged in mirror symmetry. This gives the protective shields additional dimensional stability.
  • the protective shield on the door body counteracts any deformation and bulging of the coke-side protective shield.
  • Cross-sectional geometries with different moments of resistance are preferably selected according to the invention. This means that the protective shield on the door body side has a greater section modulus than in the opposite direction against deformation directed away from the coke. This gives the restoring forces of the additional protective shield an additional effect.
  • the coke-side protective shield can be replaced if damaged against the door body-side protective shield and vice versa.
  • Different profiles can also be combined with one another. This can be used to increase the resistance moments of the protective shield on the door body side.
  • the protective shields according to the invention are generally less expensive than known other protective shields.
  • a gas channel open on the narrow sides is created between the shields.
  • the profiles forming the shields are advantageously arranged in such a way that - seen in longitudinal section - at least two protective shields composed of wefts are arranged one behind the other.
  • the other versions refer to two shields, but apply accordingly to 3 or more shields or corresponding shots with the same number of profiles.
  • the shots can be made considerably longer compared to the multi-part protective shield known from DE-A-31 05 703. While in contemporary coke ovens with a furnace height of 6 to 7 m, a maximum length of about 1 m is considered to be reliable for the shots of a known sign, shots according to the invention have a multiple of this length, e.g. B. only three shots for an 8 meter high door. This has considerable manufacturing and handling advantages.
  • a further reduction in costs can be achieved by using cross-sectional profiles for the protective shields, which correspond to the profiles of commercially available steel sheet piling or light profiles or panel profiles.
  • the protective shields are parallel to one another or inclined to one another over their entire height.
  • the coke-side protective shield is again arranged vertically so that only the shield on the door body side is inclined.
  • the inclination is chosen such that a pressure loss of 1 mm water column is compensated for every running meter of furnace height.
  • the distance between the protective shields can be made changeable by interchangeable spacers which are evenly distributed over the height of the protective shields.
  • the gas discharge quantities in the gas discharge duct between the two protective shields can also be regulated.
  • changing the distance between the protective shields and the door body can influence its temperature load, i. H. a certain desired or permissible door body temperature can be ensured by appropriate distance.
  • the overall distance from the door body can be changed while the distance between the protective shields remains the same, in the same or opposite sense. This allows the flow conditions in both gas discharge channels to be optimized.
  • the sealing plates are optionally provided with open slots on the side towards the middle of the chamber and have bolts or spacers for hanging them up.
  • the sealing plates in the raised state of the protective shields are moved laterally inwards in the elongated holes or slots; ie are sunk between the protective shields.
  • the sealing plates then move outwards against the chamber walls when the protective shields are put on. This happens, for example, in that the sealing plates protrude below between the protective shields or are provided with a suitable foot or plunger or the like, which forces the shaped profiles when the protective shields are put on, due to the guidance in the oblique slots or elongated holes to the outside on the chamber wall to move. Applying the sealing strips creates an advantageous seal between the protective shields and chamber walls.
  • the sealing plates are bent or bent sideways on their contact surface with the chamber walls. In a horizontal section through a sealing plate, this results in an S-shaped or Z-shaped or angular cross section.
  • the beveled or bent leg of this cross-section ensures gentle contact with the chamber walls and at the same time gives the sealing plates excellent dimensional stability in the longitudinal direction.
  • the furnace chamber with the associated heating or chamber walls is indicated by 1.
  • the coke oven door consists of a door body, with a power transmission unit and a sealing unit.
  • the power transmission unit runs as a hollow profile along the door frame and is connected to the door frame at least via a locking device.
  • the locking device is designed as a spring lock. These include locking hooks on the door frame 7 and pivotable locking bars on the door body, which act on the door body 7 via springs or power pistons.
  • the sealing unit has a sealing plate 5.
  • the sealing plate 5 can be designed as a hollow profile, the hollow profile being filled with insulating compound 5b.
  • the sealing plate can be provided with a one-sided bulge according to Figures 1 and 7 to the outside.
  • angle irons are attached distributed over the height, of which angle irons 15 are screwed with screws 16 to further angle irons 14, which in turn are connected to a shaped profile 9 as an external protective shield. The connection between the shaped profile 9 and the angle iron 14 is made by hanging the shaped profile 9 with suitable hooks 9 a on the angle iron 14.
  • flanges or other profiles or screws can also be used.
  • Another shape profile is attached to the shape profile 9 in mirror image as a protective shield by means of bolts 13 with spacers.
  • FIGS. 1 and 2 the positions of the shaped profiles are shown at a greater distance from one another at 18, 19 in dashed form.
  • Figures 4 and 5 the difference between the smaller and larger distance between the shaped profiles from each other is made clear.
  • the shaped profiles of the inner protective shield 8 forming the wefts overlap, while the shaped profiles of the outer protective shield 9 abut one another with sufficient play for thermal expansion.
  • the distance between the inner protective shield 8 and the sealing surface between the door body and the door frame 7 is 400 mm.
  • the distance between the two protective shields is 120 mm. This corresponds to the usual stone plug depth.
  • the ratio of the distance between the two protective shields 8 and 9 to the distance between the outer protective shield 9 and the sealing surface between the door body and the door frame 7 is between 1: 1 and 1:10, preferably between 1: 3 and 1 : 5.
  • the shaped profiles can be rolled in one piece and / or folded and / or bent, or can be composed of several parts. The parts can be screwed or welded. In the simplest case, the shaped profiles are designed as smooth sheets.
  • the cross sections according to FIG. 3 are advantageous. While, according to FIG. 1, the shaped profiles are laterally connected to one another in cross section and have bulges in the middle between the connection points. it is reversed according to Figure 3.1.
  • the shaped profiles according to FIG. 3.1 have a small distance in the middle and the shaped profiles are ver there with each other via the bolts 13 bound, while they are at a greater distance from the outside of the chamber walls.
  • the protective shields then again run parallel to each other on the outside.
  • the protective shields can also be curved in the form of a circular arc towards the chamber walls or angularly bent outwards according to FIG. 3.6.
  • the ends are first curved outwards in the form of a circular arc and then again inwards in a semi-circular manner, so that the ends are directed towards one another.
  • Figures 3.1 to 3.4 also contain various middle bulges, which are triangular, semicircular or trapezoid-like on the outside.
  • FIGS. 6 and 7 show additional sealing plates 24 which are provided with elongated holes 25.
  • only one row of sealing plates is provided between the two shaped profiles 8 and 9.
  • several rows of sealing plates can also be arranged one behind the other between the shaped profiles 8 and 9, or can be distributed over a plurality of shaped profiles arranged one behind the other.
  • the sealing plates 24 are as close as possible to the outer molded profile 9 in order to hinder the gas entry into the outer raw gas channel between the molded profile 9 and the door body and to relieve the sealing member 6.
  • FIG. 6 shows the raised state of the shaped profiles in the left half.
  • the sealing plate 24 has moved away from the chamber wall 2 in the raised state or has been pressed inwards and downwards by a plunger 26. It protrudes below the shape profile.
  • the protective shields and sealing plates 24 stand on the furnace sole and the sealing plate 24 has leaned against the chamber wall 2.
  • the sealing plate movement is up to 60 mm compared to the shaped profiles 8 and 9.
  • the gap between the shaped profiles 8 and 9 and the chamber wall 2 is up to 20 mm in the exemplary embodiment, depending on the width of the coke oven chamber. e.g. B. 15 mm gap are provided with an average chamber width of 45 cm.
  • FIG. 7 shows the S-shaped shape of the sealing plate 24, the sealing plates resting against the inside of the outer molded profile 9 and outside a vertical gap for the gas passage remaining between the molded profile 8 and the sealing plates.
  • the various sealing plates 24 of the three shots of multi-part protective shields shown in FIG. 5 a are optionally connected to one another via joints which, when the door is placed in the furnace chamber, transmit the upward movement of the lowest sealing plates 24 to the sealing plates arranged above them.
  • Hinges with two hinge joints can serve as joints, which secure a power transmission in the vertical direction and leave freedom of movement horizontally in the longitudinal direction of the furnace chamber.

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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)

Claims (21)

1. Porte de four à coke à chambre horizontale comprenant un bouclier de protection en une ou en plusieurs pièces qui sert simultanément de protection thermique, fait saillie dans la chambre du four et est relié au corps de porte et par l'intermédiaire duquel le remplissage du four est maintenu à une distance déterminée du corps de porte, le corps de porte étant, pendant le processus de cokéfaction, pressé par un dispositif de verrouillage contre le châssis de porte du four, caractérisée en ce qu'au moins un autre bouclier en une pièce ou en plusieurs pièces est agencé entre le bouclier de protection et le corps de porte.
2. Porte à four à coke suivant la revendication 1, caractérisée en ce qu'un canal de gaz ouvert sur les côtés des boucliers s'étend entre le bouclier de protection et l'autre bouclier.
3. Porte de four à coke suivant l'une des revendications 1 et 2, caractérisée en ce que le bouclier de protection et/ou l'autre bouclier sont constitués de profilés façonnés (8, 9) qui s'étendent sur la longueur de porte.
4. Porte de four à coke suivant la revendication 3, caractérisée en ce que les profilés façonnés (8, 9) sont identiques et/ou peuvent être mis en oeuvre avec d'autres profilés façonnés.
5. Porte de four à coke suivant une ou plusieurs des revendications 1 à 4, caractérisée en ce que les profilés façonnés sont, lors d'une forme de réalisation identique et d'un agencement parallèle, disposés de façon symétrique par rapport à un plan médian situé entre eux.
6. Porte de four à coke suivant une ou plusieurs des revendications 1 à 5, caractérisée en ce que les profilés façonnés (8, 9) présentent le profil de rideaux de palplanches ou de profilés allégés ou de profilés en plaque de la construction métallique du génie civil.
7. Porte de four à coke suivant une ou plusieurs des revendications 1 à 6, caractérisée en ce que les profilés façonnés (8, 9) sont agencés parallèlement l'un à l'autre sur toute la hauteur du bouclier de protection ou sont agencés de manière inclinée l'un vers l'autre vers le haut, le bouclier du côté coke étant quant à lui vertical dans l'agencement incliné.
8. Porte de four à coke suivant une ou plusieurs des revendications 1 à 7, caractérisée en ce que la distance entre les profilés façonnés (8, 9) est modifiable.
9. Porte à four suivant la revendication 8, caractérisée en ce que les profilés façonnés (8, 9) sont, pour la modification de distance, pourvus d'éléments d'écartement (12) échangeables qui sont répartis de manière uniforme sur la hauteur des profilés façonnés (8, 9).
10. Porte de four à coke suivant une ou plusieurs des revendications 1 à 9, caractérisée en ce que les distances entre le corps de porte et le profilé façonné central (9), d'une part, et le profilé façonné central (9) et le profilé façonné du côté four à coke (8), d'autre part, peuvent être modifiées de façon différente.
11. Porte de four à coke suivant la revendication 10, caractérisée en ce que la distance entre le profilé façonné du côté coke (8) et le profilé façonné central (9), d'une part, est, par rapport à la distance entre le profilé façonné central (9) et la surface d'étanchéité du châssis de la chambre avec le corps de porte, d'autre part, dans un rapport compris entre 1/1 à 1/10, de préférence de 1/3 à 1/5.
12. Porte de four à coke suivant une ou plusieurs des revendications 1 à 11, caractérisée en ce que. entre les profilés façonnés (8. 9) et les parois adjacentes de la chambre (2), sont fixées de manière amovible sur les côtés des profilés façonnés (8, 9) des tôles d'étanchéité (24) s'appuyent sur les parois de la chambre (2) lors de la descente des profilés façonnés (8, 9) et qui laissent le canal de gaz ouvert du côté coke.
13. Porte de four à coke suivant la revendication 12, caractérisée en ce que plusieurs tôles d'étanchéité (24) sont agencées l'une derrière l'autre.
14. Porte de four à coke suivant la revendication 13, caractérisée en ce que les tôles d'étanchéité (24) présentent des trous allongés (25) qui sont ascendants de manière inclinée et à travers lesquels des boulons (13) et/ou des éléments d'écartement (12) pour les deux profilés façonnés (8, 9) sont passés.
15. Porte de four à coke suivant la revendication 14, caractérisée en ce que les tôles d'étanchéité (24) présentent des fentes latérales, ouvertes vers le centre de la chambre.
16. Porte de four à coke suivant une ou plusieurs des revendications 14 et 15, caractérisée en ce que les tôles d'étanchéité (24) font saillie au-delà du bord inférieur des profilés façonnés (8, 9), à l'état soulevé de ceux-ci, et en ce que, lors de la descente des profilés façonnés (8, 9), elles se déplacent par rapport à ceux-ci vers le haut et latéralement contre les parois de la chambre (2).
17. Porte de four à coke suivant une ou plusieurs des revendications 13 à 16. caractérisée en ce que sur le bord supérieur du bouclier de protection sont agencés des poussoirs (26) agissant verticalement, à l'aide desquels les tôles d'étanchéité (24) sont, lors du soulèvement des profilés façonnés (8, 9), pressées vers le centre de la chambre, à l'écart des parois de la chambre (2).
18. Porte de four à coke suivant une ou plusieurs des revendications 13 à 17. caractérisée en ce que les tôles d'étanchéité (24) présentent un profilage, de préférence un cintrage, sur leurs bords longitudinaux verticaux.
19. Porte de four à coke suivant la revendication 18, caractérisée en ce que les tôles d'étanchéité (24) sont réalisées en forme de S.
20. Porte de four à coke suivant la revendication 19, caractérisée en ce que les tôles d'étanchéité (24) sont en appui sur les profilés façonnés centraux (9).
21. Porte de four à coke suivant une ou plusieurs des revendications 13 à 20, caractérisée en ce que les tôles d'étanchéité (24) sont constituées de plusieurs tronçons en direction verticale.
EP19840116214 1984-01-05 1984-12-22 Porte de four à coke à chambres horizontales Expired EP0163773B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3400223 1984-01-05
DE3400223 1984-01-05
DE3440312 1984-11-05
DE19843440312 DE3440312A1 (de) 1984-01-05 1984-11-05 Schutzschild fuer koksofentuer
DE19843440311 DE3440311A1 (de) 1984-01-05 1984-11-05 Koksofentuer
DE3440311 1984-11-05

Publications (3)

Publication Number Publication Date
EP0163773A2 EP0163773A2 (fr) 1985-12-11
EP0163773A3 EP0163773A3 (en) 1986-03-12
EP0163773B1 true EP0163773B1 (fr) 1987-05-06

Family

ID=27191596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840116214 Expired EP0163773B1 (fr) 1984-01-05 1984-12-22 Porte de four à coke à chambres horizontales

Country Status (7)

Country Link
EP (1) EP0163773B1 (fr)
BR (1) BR8500021A (fr)
CA (1) CA1267863A (fr)
ES (1) ES8605564A1 (fr)
MX (1) MX162171A (fr)
PL (1) PL142823B1 (fr)
SU (1) SU1572417A3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540845A1 (de) * 1985-11-18 1987-05-21 Ruhrkohle Ag Koksofentuer fuer einen horizontalkammer-verkokungsofen
RU2421500C2 (ru) * 2009-01-29 2011-06-20 Сергей Иванович Разгонов Дверь камеры сгорания печи

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE238363C (fr) *
FR967677A (fr) * 1948-06-07 1950-11-09 Masque pour portes de fours
ATE3724T1 (de) * 1979-11-08 1983-06-15 Wsw-Planungsgesellschaft Mbh Koksofentuer mit grossvolumigem gassammelraum.

Also Published As

Publication number Publication date
SU1572417A3 (ru) 1990-06-15
EP0163773A3 (en) 1986-03-12
PL251454A1 (en) 1985-11-05
PL142823B1 (en) 1987-12-31
ES539299A0 (es) 1986-04-01
MX162171A (es) 1991-04-04
CA1267863A (fr) 1990-04-17
BR8500021A (pt) 1985-08-13
EP0163773A2 (fr) 1985-12-11
ES8605564A1 (es) 1986-04-01

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