EP0085369B1 - Procédé pour le refroidissement à sec de coke et chambre de refroidissement - Google Patents

Procédé pour le refroidissement à sec de coke et chambre de refroidissement Download PDF

Info

Publication number
EP0085369B1
EP0085369B1 EP83100551A EP83100551A EP0085369B1 EP 0085369 B1 EP0085369 B1 EP 0085369B1 EP 83100551 A EP83100551 A EP 83100551A EP 83100551 A EP83100551 A EP 83100551A EP 0085369 B1 EP0085369 B1 EP 0085369B1
Authority
EP
European Patent Office
Prior art keywords
seal
cooling shaft
coke
housing
spacer
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
EP83100551A
Other languages
German (de)
English (en)
Other versions
EP0085369A3 (en
EP0085369A2 (fr
Inventor
Heinrich Dr. Weber
Kurt Dr. Lorenz
Horst Dungs
Engelbert Bruns
Gerd Osterholt
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.)
Carl Still GmbH and Co KG
Original Assignee
Carl Still GmbH and Co KG
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 Carl Still GmbH and Co KG filed Critical Carl Still GmbH and Co KG
Publication of EP0085369A2 publication Critical patent/EP0085369A2/fr
Publication of EP0085369A3 publication Critical patent/EP0085369A3/de
Application granted granted Critical
Publication of EP0085369B1 publication Critical patent/EP0085369B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B25/00Doors or closures for coke ovens
    • C10B25/20Lids or closures for charging holes
    • C10B25/22Lids or closures for charging holes for ovens with vertical chambers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00Cooling or quenching coke
    • C10B39/02Dry cooling outside the oven

Definitions

  • the invention relates to a method for dry coke cooling, in which the glowing coke is transported from the coke oven to the cooling shaft and cooled in this by means of a special bucket, for which purpose the special bucket is placed on the cooling shaft and then through a sluice which accommodates the housing from a closure, filling opening and intermediate piece there is emptied into the cooling shaft.
  • the invention also relates to a cooling shaft with an outlet funnel for the special bucket and with a lock arranged on the filler opening for carrying out the method, the lock consisting of an intermediate piece and closure receiving and adjoining the filler opening.
  • the so-called coke dry cooling leads to a considerable reduction in the environmental impact when quenching the red-hot coke.
  • the glowing coke is transported from the coke oven to the extinguishing device with the help of a special bucket, the special bucket being closed during transport.
  • the special bucket is placed on the cooling shaft and the coke plunged into the cooling shaft by opening the bottom of the bucket.
  • a special lock is used to close the cooling shaft.
  • closable and lowerable closures for cooling shafts are known (DE-OS 30 04 175.9), the closure including the rollers and an intermediate piece being arranged in a closed housing.
  • depressions are provided on the rails, into which rollers engage when the closure is closed.
  • the closure can only be raised and lowered to a limited extent.
  • the sealing effect of the closure is therefore dependent on additional measures.
  • the housing which is closed on all sides, requires a large amount of space and must be sealed to such an extent that the escape of gases is reliably prevented. If the gases are sucked out of the housing, it is disadvantageous that the housing has such a large volume.
  • rollers on which the closure is transported back and forth have to be adapted to the high requirements within the closed slide housing, which requires the use of special material.
  • the complex dimensions of the housing which result from the fact that the rollers and the rails and the actual closure and the intermediate piece are arranged within the housing, the closure and intermediate piece being pushed back and forth in the housing and raised will.
  • the invention is based on the object of making the method for coke cooling free of emissions even when the cooling shaft is required to be opened and of making the suction space required for this as small as possible.
  • the object is achieved according to the invention in that the intermediate piece and the closure are encapsulated in a housing on the chassis and, after the special bucket has been placed, the intermediate piece and closure move on rollers and running rails lying outside the encapsulated housing and from which largely sealed against the atmosphere and tightly enclosed space can be extracted when opening the filling opening.
  • the method according to the invention offers the possibility of safely collecting and removing the gases escaping when the cooling shaft is opened in a lock with the smallest possible volume.
  • the filling process of the cooling shaft is therefore free of emissions, which contributes to a further relief of the environment.
  • the closure and the intermediate piece can be moved back and forth and raised and lowered, the housing encapsulating these parts being encapsulated on the chassis. Encapsulation of this type limits the volume of the lock, but effective suction is nevertheless ensured in the period characterized by the emissions from the cooling shaft.
  • a cooling shaft is proposed in which the housing frame, in whole or in part together with the closure and intermediate piece, which are encapsulated on the chassis, is designed to be movable on rollers and running rails located outside the housing is.
  • Such a housing is adapted to the dimensions of the closure and intermediate piece without taking the displacement path into account, so that its volume is correspondingly small. Because of the smallest possible space, both the design effort and the subsequent operational effort with regard to the extraction is low.
  • the rollers and tracks located outside the housing are easier to access, easier to maintain and are not used by the escaping gases.
  • the side walls of the housing frame which connect to the horizontal housing spout and filling opening assigned to the housing cover and bottom, are assigned to the closure and intermediate piece and can be moved with them.
  • a housing acting as a lock is created here, which has the smallest possible space, which can be implemented in a structurally simple manner and yet effectively encapsulates the area around the filling opening from the atmosphere when the closure is opened.
  • a sufficiently tight seal between the reciprocating side walls and the housing cover and the housing base can expediently be achieved in that the side walls and housing cover and housing base have angle irons on the mutually opposite edges. A larger contact and sealing surface is created via the angle iron. It is also possible to design the side walls and housing cover and housing base in the area of the edges in a correspondingly bent manner in order to create contact or sealing surfaces.
  • the side walls have edges on the housing cover and base facing edges of these sliding sealing elements. Since these sealing elements are not exposed to pressure or other loads, they are subject to only slight wear and lead to an optimization of the sealing if it should turn out that the intake of ambient air is unfavorable or harmful.
  • a quick and uniform lifting of the closure in all areas and accordingly also a lowering after completion of the filling process is ensured according to the invention in that the closure can be raised and lowered via a spindle drive which is coupled to the displacement drive.
  • spindle drive requires little space and can be arranged and designed according to the circumstances without requiring any significant design effort.
  • the coupling to the slide drive ensures a continuous, cyclical operation and prevents accidental damage to the lock by actuating the slide drive too early.
  • such drives can be designed so that they can be used for both functions one after the other.
  • a sheet metal edge is arranged circumferentially and adjustable at the edge of the closure.
  • the movable arrangement makes it possible to adapt such a closure to the particular circumstances. This creates a universal closure, which contributes to a reduction in reserve keeping. In addition, there is a good sealing effect without separate pressure forces.
  • An advantageous light version of the closure is given if the insulation of the closure consists of fire-resistant mats.
  • the invention is characterized in particular by the fact that a method and a closure for cooling shafts of coke-dry cooling are created, by means of which effective sealing with the most favorable dimensions is given. Because of the low overall height and the side walls of the housing which can be moved with the closure and the intermediate piece, this or the lock has a small volume, which at the same time leads to a reduction in operating costs.
  • the special design and arrangement of the side walls of the housing makes it possible to dispense with a widely protruding construction for encapsulating the closure and the intermediate piece.
  • the accessories of the chassis are outside the housing and are therefore largely protected against the escaping gases and heat.
  • Fig. 1 shows the upper region of a cooling shaft 1, which runs into the filling opening 2, which is closed in the position shown in Fig. 1 via the closure 3 from the atmosphere.
  • the closure 3 is raised and moved aside, the intermediate piece 4 simultaneously coming into the position of the closure 3 and thereby closing off the transition region between the discharge funnel 5 and the filling opening 2.
  • Suction ports 6 are indicated on the side of the discharge funnel 5. The gases flowing out when the cooling shaft is opened are sucked in and sucked out via the suction connection 6, these being connected to the housing frame 9 encapsulating the closure 3 and the intermediate piece 4.
  • the cooling shaft 1 is provided with a lining 7 which extends up to the area of the filling opening 2.
  • the closure 3 itself is provided with appropriate insulation 8. Due to the lightweight construction, it is easy to handle.
  • Closure 3 and intermediate piece 4 are assigned to a common chassis 10, which has several, preferably four, rollers 11, 13 has, which in turn can roll on the rails 12, 14. 1 and 2, the rollers 11, 13 are arranged outside the cover created over the side walls 15, 16, 17, 18.
  • the running rails 12, 14 themselves are also not included in the area formed by the housing frame 9 in order to safely discharge and then extract the gases escaping when the closure 3 is opened.
  • the structure of the chassis 10 is explained in more detail below with reference to FIG. 3.
  • Fig. 2 in which is cut transversely to the direction of travel of the chassis 10, illustrates how the upper edge 19 and the edges of the side walls 15, 16, 17, 18 are guided in or on the housing cover 20 or housing base 21.
  • the housing cover 20 is assigned to the outlet funnel 5, the housing base 21 to the cooling shaft 1 or the filling opening 2.
  • the side walls 15, 16, 17, 18 and the housing cover 20 and the housing base 21 form a housing which, because of its small volume, can be kept free by suction with little effort.
  • the sucking in of external air into the housing is effectively prevented by said special design of the upper edge 19 or the edges of the side walls 15, 16, 17, 18.
  • Fig. 2 also makes it clear how exactly the closure 3 and the associated parts can be cut, because one can dispense with the inclusion of the rollers 11, 13 and other parts that are important for moving the closure 3 in the sealing that takes place via the side walls .
  • the running rails 12, 14 run parallel to the filling opening 2 below the actual closure 3 (FIG. 3).
  • the rails 12, 14 are attached, which ensure a smooth rolling of the rollers 11, 13. 2
  • the rails 12, 14 are arranged below the edge 22 of the filling opening 2 and parallel to the wall 23 thereof.
  • the device has a sufficient lifting height for the closure 3, so that an immersion seal 26 can be used, which ensures an optimal sealing of the cooling shaft in the closed state.
  • 3 edge plates 27 are arranged on the lower edge of the closure, which are inserted with their free end 28 into the immersion seal 26.
  • the edge plate 27 is folded over twice, so that a free edge 29 is formed which lies exactly on the edge 22.
  • the aforementioned optimal closure of the cooling shaft 1 takes place via this free edge 29 and the immersion seal 26.
  • a spindle drive 32 is used to raise and lower the closure 3, which in the example shown is combined with the displacement drive 33. Via the spindle drive 32, the spindles 34, 35 are actuated, which then raise the closure 3 fastened to the support strips 36 or into the seat, i.e. insert in the immersion seal 26.
  • the spindle drive 32 has the linkage 37, 38 in order to raise and lower the closure 3 simultaneously and evenly at all four corners.
  • Closure 3 and intermediate piece 4 are assigned to one and the same chassis 10, as has already been explained.
  • This chassis 10 consists of the longitudinal beams 40, to which the rollers 11, 13 are also attached, and the cross members 41, to which the closure 3 or the intermediate piece 4 is attached.
  • a roller protection 42 ensures, however, that the individual rollers 11, 13 are largely protected from being influenced by dirt and the like.
  • the closure 3 When the spindle drive 32 and the linkage 37, 38 are actuated, the closure 3 is first raised and then subsequently pulled away from the filling opening 2 via the displacement drive 33. Since the closure 3 and the intermediate piece 4 are assigned to the same chassis 10, when the closure 3 is moved, the intermediate piece is simultaneously drawn into this area and thus effectively covers this area when the coke falls.
  • the side walls 15, 16, 17, 18 in particular ensure safe discharge and suction of the gases flowing out of the filling opening 2, in each case interacting with the housing cover 20 arranged above or the housing base 21 arranged underneath and forming the said lock .
  • the housing base 21 is provided between the rails 12, 14 and in such a way that the lower edges of the side walls 15, 16, 17, 18 can rub tightly on it.
  • the inner walls 44 of the intermediate piece 4 are arranged obliquely inwards and downwards, so that a rectangular or square funnel 45 is formed. Uniform passage of the glowing coke is thus ensured.
  • the special design of the intermediate piece 4 and the connection between the intermediate piece 4 and the closure 3 is illustrated by FIG. 3.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)

Claims (8)

1. Procédé de refroidissement à sec du coke, au cours duquel le coke incandescent est transporté dans une benne spéciale, du four à coke jusqu'au puits de refroidissement, dans lequel il est refroidi. Pour ce faire, la benne spéciale est posée sur le puits de refroidissement, puis vidée dans celui-ci à travers un sas constitué par un bâti comprenant une fermeture, l'ouverture de chargement et une partie intermédiaire, caractérisé par le fait que la partie intermédiaire ci-dessus (4) et la fermeture (3) sont enfermées dans un bâti appliqué sur le chariot (10), qu'après la pose de la benne spéciale sur le puits, la partie intermédiaire (4) et la fermeture (3) se déplacent sur des galets (11)/(13) et des rails de roulement (12)/(14) installés à l'extérieur du bâti blindé et qu'à l'ouverture de l'orifice de chargement, les gaz libérés sont alors aspirés de l'espace étroit et dans une large mesure étanche à l'atmosphère.
2. Puits de refroidissement avec trémie de décharge pour la benne spéciale et avec sas disposé sur l'ouverture de chargement, pour application du procédé selon revendication 1, le sas se composant d'un bâti faisant suite à l'ouverture de chargement et accueillant une partie intermédiaire et la fermeture, caractérisé par le fait que le cadre du bâti (9) est conçu pour se déplacer entièrement ou partiellement avec la fermeture (3) et la partie intermédiaire (4) enfermées dans un blindage appliqué sur le chariot (10), sur des galets (11)/(13) et des rails de roulement (12)/(14) placés à l'extérieur du bâti.
3. Puits de refroidissement selon revendication 2, caractérisé par le fait que les parois latérales (15)/ (16)/(17)/(18), qui font suite au couvercle (20) et au fond (21) du bâti de la trémie de décharge horizontale (5) et de l'ouverture de chargement (2), sont associées à la fermeture (3) et à la pièce intermédiaire (4) et se déplacent avec celles-ci.
4. Puits de refroidissement selon revendication 3, caractérisé par le fait que les parois latérales (15)/ (16)/(17)/(18), le couvercle (20) et le fond (21) du bâti sont munis de cornières sur les côtés se faisant face.
5. Puits de refroidissement selon revendication 3, caractérisé par le fait que les parois latérales (15)/ (16)/(17)/(18) présentent sur les côtés tournés vers le couvercle (20) et le fond (21) du bâti des éléments d'étanchéité qui frottent contre ceux-ci.
6. Puits de refroidissement selon revendication 2, caractérisé par le fait que la fermeture(3) peut effectuer un mouvement de montée et de descente, par un actionnement à tiges filetées (32) accouplé avec l'actionnement de déplacement (33).
7. Puits de refroidissement selon revendication 2, caractérisé par le fait que sur le bord de la fermeture (3), une tôle d'arête (27) est disposée ajustable sur tout le pourtour.
8. Puits de refroidissement selon revendication 2, caractérisé par le fait que l'isolation (8) de la fermeture (3) est constituée par des nattes incombustibles.
EP83100551A 1982-01-28 1983-01-22 Procédé pour le refroidissement à sec de coke et chambre de refroidissement Expired EP0085369B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3202645A DE3202645C2 (de) 1982-01-28 1982-01-28 Kühlschacht mit Schleuse
DE3202645 1982-01-28

Publications (3)

Publication Number Publication Date
EP0085369A2 EP0085369A2 (fr) 1983-08-10
EP0085369A3 EP0085369A3 (en) 1985-01-09
EP0085369B1 true EP0085369B1 (fr) 1987-06-10

Family

ID=6154077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100551A Expired EP0085369B1 (fr) 1982-01-28 1983-01-22 Procédé pour le refroidissement à sec de coke et chambre de refroidissement

Country Status (4)

Country Link
US (1) US4508596A (fr)
EP (1) EP0085369B1 (fr)
JP (1) JPS602344B2 (fr)
DE (2) DE3202645C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0788511B2 (ja) * 1985-06-18 1995-09-27 三菱重工業株式会社 コ−クス乾式消火設備のコ−クス装入装置
JPS63162848U (fr) * 1987-04-09 1988-10-24
DE4026725C1 (fr) * 1990-08-24 1991-11-14 Still Otto Gmbh, 4630 Bochum, De
DE4102045C2 (de) * 1991-01-24 2000-10-05 Rag Ag Kokseintragsvorrichtung mit Einhausung für eine Kokstrockenkühlanlage
US5500094A (en) * 1994-06-30 1996-03-19 The M. W. Kellogg Company Coke drum deheading device
US6344268B1 (en) * 1998-04-03 2002-02-05 Certainteed Corporation Foamed polymer-fiber composite
CN112195031B (zh) * 2020-08-31 2021-06-15 河北华丰能源科技发展有限公司 焦炉炉顶的导烟结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU518961A1 (ru) * 1974-07-12 1978-07-05 Государственный Всесоюзный Институт По Проектированию Предприятий Коксохимической Промышленности Министерства Черной Металлургии Ссср Устройство дл загрузки коксом камеры сухого тушени
JPS5161502A (en) * 1974-11-27 1976-05-28 Nippon Kokan Kk Kookusuno kanshikishokaroniokeru hatsujinboshisochi
DE2815739C3 (de) * 1978-04-12 1981-03-12 Didier Engineering Gmbh, 4300 Essen Verschlußeinrichtung für die Füllöffnung einer Kühlkammer einer Anlage zur trockenen Kokskühlung
DE3003374A1 (de) * 1980-01-31 1981-08-06 Krupp-Koppers Gmbh, 4300 Essen Einrichtung zur aufgabe von gluehendem koks in einem mit kuehlgasen beaufschlagten kuehlschacht
DE3004175A1 (de) * 1980-02-05 1981-08-06 Hartung, Kuhn & Co Maschinenfabrik GmbH, 4000 Düsseldorf Einrichtung fuer den transport von gluehendem koks
US4345867A (en) * 1980-03-10 1982-08-24 Minasov Alexandr N Coke dry quenching plant
JPS57111379A (en) * 1980-12-27 1982-07-10 Ishikawajima Harima Heavy Ind Co Ltd Apparatus for charging raw material into dry quenching equipment for coke
JPS6026520B2 (ja) * 1981-01-23 1985-06-24 日本鋼管株式会社 コ−クス乾式消火設備における原料装入装置

Also Published As

Publication number Publication date
JPS58136689A (ja) 1983-08-13
DE3202645A1 (de) 1983-08-04
JPS602344B2 (ja) 1985-01-21
DE3202645C2 (de) 1986-08-28
EP0085369A3 (en) 1985-01-09
EP0085369A2 (fr) 1983-08-10
DE3371995D1 (en) 1987-07-16
US4508596A (en) 1985-04-02

Similar Documents

Publication Publication Date Title
DE3521540A1 (de) Loeschwagen fuer verkokungsoefen
DE3139856A1 (de) Vorrichtung zum fuellen von isolierglas mit schwergas
DE2553386C3 (de) Staubfangvorrichtung für eine Koks-Trockenlöschanlage
EP0085369B1 (fr) Procédé pour le refroidissement à sec de coke et chambre de refroidissement
DE2928345C2 (de) Entascher
DE3011575C2 (de) Befülleinrichtung für Kokstrockenkühlkammern
DE4102045C2 (de) Kokseintragsvorrichtung mit Einhausung für eine Kokstrockenkühlanlage
DE3108483C2 (de) Füllochverschlußeinrichtung für horizontale Verkokungsöfen
EP0033446A2 (fr) Recipient pour le transport du coke
DE2302831C2 (de) Vorrichtung zur Handhabung von stabförmigen Elementen eines Kernreaktors
DE2211571B2 (de) Einrichtung zum Auffangen und Abführen der beim Ausdrucken von Koks aus Verkokungsöfen entstehenden staubbeladenen Gase
DE3206938C2 (de) Verfahren zur Kokstrockenkühlung und Verschluß für einen Kokskübel
DE2737549C2 (de) Dichtungsausbildung an einer mit Wasser gefüllten, durch einen Tunnelofen geführten Dichtrinne
DE9319380U1 (de) Brecher für Gestein und/oder Recyclingmaterial
EP0998542A1 (fr) Dispositif et procede pour etancheifier un jour de porte a nivelage d'une chambre de four a coke
DE2407689C3 (fr)
DE102019220302A1 (de) Dunstabzugsvorrichtung für Kochfeld
EP0568636B1 (fr) Dispositif d'alimentation en coke pour une installation de refroidissement a sec du coke
DE2943319C2 (de) Einrichtung zur Verhinderung des Austretens von Füllgasen bei mit Stampfkuchen beschickten waagerechten Kammern von Verkokungsöfen
DE2828131C2 (de) Absaugeinrichtung an einem Vertikalkammerkoksofen
DD130680B1 (de) Vorrichtung zur abdichtung zwischen kammerofen und herdwagen
DE7603726U1 (de) Staub- und gasdichte vorrichtung zum deckelabheben, fuellen und schliessen von fuelloechern von koksofenbatterien
DE102017109681B3 (de) Ofen mit Ofendeckel
WO1999000465A1 (fr) Dispositif pour empecher l'echappement de gaz de remplissage d'une chambre de four a coke pendant le chargement du gateau pilonne
DE3314791C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19830122

AK Designated contracting states

Designated state(s): BE DE FR IT LU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR IT LU

17Q First examination report despatched

Effective date: 19860528

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR IT LU

REF Corresponds to:

Ref document number: 3371995

Country of ref document: DE

Date of ref document: 19870716

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940328

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19941201

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19951003

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960122

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011226

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020220

Year of fee payment: 20

BE20 Be: patent expired

Owner name: *CARL STILL G.M.B.H. & CO. K.G.

Effective date: 20030122