EP1035373B1 - Rostsystem für einen Brennstoffkessel - Google Patents
Rostsystem für einen Brennstoffkessel Download PDFInfo
- Publication number
- EP1035373B1 EP1035373B1 EP00104734A EP00104734A EP1035373B1 EP 1035373 B1 EP1035373 B1 EP 1035373B1 EP 00104734 A EP00104734 A EP 00104734A EP 00104734 A EP00104734 A EP 00104734A EP 1035373 B1 EP1035373 B1 EP 1035373B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grate system
- cheeks
- ridge
- plates
- grate
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H7/00—Inclined or stepped grates
- F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
- F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H3/00—Grates with hollow bars
- F23H3/02—Grates with hollow bars internally cooled
Definitions
- the invention relates to a grate system for a fuel boiler consisting of steps arranged in the longitudinal direction of the grate system Plates.
- a grate system for a fuel boiler consisting of steps arranged in the longitudinal direction of the grate system Plates.
- Such a grate system is known from DE-C-40 00 973.
- DE-PS 40 00 973 is a grate and a built up with it
- Fuel boiler described in the longitudinal direction of the grate system a number of plates arranged successively in steps are. Part of the plates are fixed to one first bracket attached and the other plates are movable mounted on a second bracket. The attachment of each plate its holder is height adjustable. This can different gaps for the passage of combustion air can be set.
- the movable plates are in Longitudinally movable back and forth of the grate system. hereby the firing stock can continuously from the entry end to Exit end of the fuel boiler are transported.
- EP 811 803 A2 describes a grate element with liquid-cooled Rust described. It is suggested that the coolant through straight-line channels in the grids across the longitudinal direction the grate elements is guided. On the side edges of the grids is an inflow and outflow as well as diversions between the Channels provided. The coolant flow is selected so that the Channels operated either in series or in parallel can be. As a result, the cooling capacity can meet the requirements be determined accordingly.
- EP 621 449 describes a liquid-cooled grate element where the cooling water is meandering through a Cavity in which the grate is guided.
- a firing grate is included
- Cross grate bars described alternately fixed to the grate plates and can be moved back and forth in the longitudinal direction, the grate plates are arranged in steps.
- the grate plates are Channels for blowing combustion air into the combustion chamber arranged.
- Two rust plates lying side by side meet with their side faces together, the end faces two Have slopes. This results in a thorough mixing of the solid fuels.
- EP 0 246 981 A1 describes a grate system with side by side Grate elements described. Between the grate elements cheek elements are arranged that interlock. Between A spring is arranged on the cheeks, through which a side Movement of the grate plates can be compensated. The cheek elements interlock so that parts of the combustion material not in the space between the grate plates or between the cheek parts can fall.
- EP 0 004 072 A2 discloses a grate system in which the Grate plates also arranged one above the other in steps are. Between grate plates lying side by side in the transverse direction interlocking side walls are provided which allow movement to each other without jamming.
- the sidewalls each have a curved roof, with the Roofs of the side walls lying side by side overlap. By this overlap creates a small gap towards one Side of the combustion chamber.
- a grate system for a fuel boiler create the step-shaped in the longitudinal direction of the grate system arranged plates, whereby the grate system is a controlled and complete combustion of high-calorific fuels with high temperatures.
- a grate system is the beginning mentioned type characterized in that at least two plates are arranged side by side in the transverse direction and that ridge cheeks provided between the adjacent plates are, the ridge cheeks outlet openings for gases and gas mixtures to have.
- each of the grates independently can be heated.
- the grids can be kept smaller and ideally adapted to the required combustion performance become.
- air outlet openings in the ridge cheeks air can also be supplied within the combustion chamber, so that optimal combustion performance can be achieved.
- the ridge cheek a dome-shaped cover plate in cross section, so that a spatial separation of the combustion chamber takes place in the fuel boiler.
- the cover plate should also be in the longitudinal direction of the combustion chamber inclined and thus to the successive steps Panels that adjoin the ridge cheeks can be adapted.
- the ridge cheeks each have a nose of the front and rear faces, with the noses so are arranged that the lugs in the longitudinal direction of the combustion chamber adjacent cheeks are one above the other and the Ridge cheeks mesh with it. Through the noses is one sufficient ridge cheek play allows so that the Thermal expansion of the ridge cheeks does not have a negative effect.
- the outlet openings are advantageously at the rear Front surface below the cover plate and on the side surfaces arranged above the adjacent panels. With that the main combustion zones of the grates depending on the fuel adequately ventilated by additional combustion air. To the Reduce thermal NOx formation, especially at medium and high calorific fuels and the occurring higher combustion temperatures, it is advantageous when flue gases enter the outlet openings Combustion chamber can be returned.
- the ventilation of the combustion chamber can be further improved, by side cheeks adjacent to the free side walls of the Plates are arranged.
- the side panels should have outlet openings above the adjacent panels. So that can Flue gases or additional air both over the cross section of the combustion chamber as well as from the side wall.
- the sidewalls should have vertical webs that act as supports serve for the side walls and as feed channels.
- the side cheeks or the ridge cheeks are advantageous carried by channels running lengthways along the pipe system are arranged.
- the channels are preferably as load-bearing element designed so that flue gas or additional air to the outlet openings in the side panels and / or ridge panels can be directed.
- the plates are advantageous for this formed as a hollow body and in the plates helical guide and stabilizing ribs are provided. Each plate has an inlet connected to the hollow body and an outlet for the coolant.
- the control of the temperature of the grate is independent of the supplied combustion air, so that the combustion air can be fed in stages such that the combustion stops or substoichometric as pyrolysis with afterburning or overstoichometric can take place in the combustion chamber.
- Gases, gas mixtures and all hydraulic can be used as a secondary cooling medium Media are used, provided their viscosity this allows and the purpose of cooling is fulfilled.
- the inlet or the outlet for connecting the cooling medium is advantageously located below the grate plate, the direction of flow is freely selectable. Through the spiral channel the cooling medium advantageously distributed evenly in the plate and the cooling flow is stabilized.
- a heat exchanger for the Coolant wherein the coolant discharged Energy supplied to a feedstock for rust combustion becomes. This allows the energy e.g. continues to promote combustion be used by supplying them to the combustion air becomes. The energy can also be supplied to the fuel for drying be used, or used to heat up the condensate.
- a particularly complete and controlled combustion of the Fuel is made possible by the fact that every second plate in Longitudinally reciprocable and with a corresponding Drive is provided, the fixed plates on a common first bracket and the movable plates on a common second bracket are attached and the attachment each plate is height adjustable on its bracket. Thereby can the space between the stepped Plates freely selectable and the air supply quantity according to the Requirement can be set in the combustion chamber. Through the movement Every second plate is prevented from burning the rust falls through.
- ridge cheeks and the side cheeks are rigid.
- the ridge cheek 1 shows a cross section of a ridge cheek 1, the one cover plate 2 inclined in the longitudinal direction of the combustion chamber reveals.
- On the front face 3 and the rear Front surface 4 are provided lugs 5 and 6, respectively. It is recognizable that the level of the noses 5 and 6 is different, so that the noses of adjacent ridge cheeks one above the other lie.
- the ridge cheek 1 has webs 7 through which the ridge cheeks can be carried and the channels for gases and gas mixtures form.
- FIG. 2 leaves the lateral outlet openings 9 on the side surfaces recognize the ridge cheek 1 with a feed channel 10 for gases and gas mixtures in the interior of the ridge cheek 1 in Connect.
- the side outlet openings 9 should lie above the panels adjacent to the ridge cheek 1, which are not shown.
- FIG. 3 shows a front view of the rear front surface 4 recognize the ridge cheek 1. It can be seen that the cover plate 2 is dome-shaped in cross section of the ridge cheek. Farther is the radially curved air outlet opening corresponding to the dome shape 8 recognizable.
- the ridge cheeks 1 are preferably made of cast steel.
- the feeder the flue gases or supply air to the ridge cheeks 1 are carried out with channels, not shown, in the longitudinal direction of the combustion chamber are arranged. These channels are preferably shaped that they are adapted to the webs 7 of the ridge cheeks 1 and these wear.
- FIG. 4 shows a side cheek 11 which is attached to the free one Adjoin the side walls of the panels.
- the side cheek 11 has outlet openings 12, which are preferably above the to the Sidewall 11 adjacent plates are.
- the side cheeks 11 are carried by webs 13, which also serve as feed channels are trained.
- On the upper side edge of the side cheeks 11 is preferably a groove 14 on one and one corresponding spring 15 is provided on the other side, so the side cheeks 11 are arranged side by side can be.
- the side cheek 11 is shown in cross section in FIG. There are the conical outlet opening 12 and the inclined ones To recognize webs 13. On the back of the side cheek A tab 16 is provided around the side cheek 11 to hang on a carrier, not shown.
- a plate 17 consists of a first Casting 18 with guide and stabilizing ribs running transversely to the plate 17 19.
- first casting 18 In the first casting 18 are holes for an inlet 20 and an outlet 21 for introduction and discharge provided by coolant in or out of the cavity of the plate 17.
- Figure 6 also shows that a second part 22 inserted into the first casting 18 and welded to it is.
- the second part 22 has corresponding guide and stabilizing ribs 23, together with the guide and stabilizing ribs 19 of the first casting 18 a meandering Form channel in plate 17.
- the plate 17 is shown in longitudinal section in FIG. It it can be seen that the guide and stabilizing ribs 19, 23 channels 24 are created for coolant. It can also be seen that a mounting bracket 25 is provided below the plate 17 is to the plate 17 to a bracket, not shown to assemble.
- the bracket can either be fixed or back and forth with a drive in the longitudinal direction of the combustion chamber be moved. By moving the plate is advantageous transport of the firing material through the combustion chamber is possible.
- the structure of the plate 17 is represented by that in FIG Cross section through the plate 17 can be seen in further detail. It can be seen that the abutting edge 26 of the first casting 18 is inclined at an angle a.
- the plates 17 are stepped in a manner not shown stacked in the longitudinal direction of the combustion chamber, as it is in principle already shown in DE-PS 40 00 973 and detailed is described. At least two of these successively in steps Panel tracks are placed side by side in the combustion chamber arranged, one between the plates 17 in the longitudinal direction Step-by-step arrangement of ridge cheeks 1 is provided. Laterally on the free side ends of the plates 17 each adjoins a row of side walls 11.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Description
- Figur 1 -
- eine Seitenansicht einer Firstwange im Querschnitt;
- Figur 2 -
- eine Frontansicht der Firstwange mit seitlichen Austrittsöffnungen im Querschnitt;
- Figur 3 -
- eine Frontansicht der Firstwange mit einer Austrittsöffnung an der hinteren Frontfläche;
- Figur 4 -
- eine Frontansicht einer Seitenwange mit Austrittsöffnungen und Stegen;
- Figur 5 -
- eine Schnittansicht der Seitenwange mit Austrittsöffnung und Steg;
- Figur 6 -
- eine Draufsicht auf eine Platte mit wendelförmigen Leit- und Stabilisierungsrippen im Querschnitt;
- Figur 7 -
- einen Längsschnitt durch die Platte mit Kanälen für ein Kühlmittel;
- Figur 8 -
- einen Querschnitt durch die Platte.
Claims (22)
- Rostsystem für einen Brennstoffkessel, bestehend aus in Längsrichtung des Rostsystems stufenförmig angeordneten Platten (17), dadurch gekennzeichnet, dass mindestens zwei Platten (17) in Querrichtung nebeneinander angeordnet und Firstwangen (1) zwischen den nebeneinanderliegenden Platten (17) vorgesehen sind, und die Firstwangen (1) Austrittsöffnungen für Gase und Gasgemische (8, 9) haben.
- Rostsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Firstwangen (1) eine im Querschnitt kuppelförmige Deckplatte (2) haben.
- Rostsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Firstwangen (1) eine in Längsrichtung geneigte Deckplatte (2) haben.
- Rostsystem nach Anspruch 3, dadurch gekennzeichnet, daß jeweils eine Nase (5, 6) an der vorderen und hinteren Frontfläche (3, 4) der Firstwangen (1) vorgesehen ist, wobei die Nasen (5, 6) so angeordnet sind, daß die Nasen (5, 6) angrenzender Firstwangen (1) übereinander liegen.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß an der hinteren Frontfläche (4) der Firstwangen (1) unterhalb der Deckplatte (2) eine Austrittsöffnung für Gase und Gasgemische (8) vorgesehen ist.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß an den Seitenflächen der Firstwange (1) jeweils Austrittsöffnungen für Gase und Gasgemische (9) oberhalb von den angrenzenden Platten (17) vorgesehen sind.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Seitenwangen (11) angrenzend an die freien Seitenwände der Platten (17) vorgesehen sind, wobei die Seitenwangen (11) Austrittsöffnungen für Gase und Gasgemische (12) oberhalb von den angrenzenden Platten (17) haben.
- Rostsystem nach Anspruch 7, daduch gekennzeichnet, daß die Seitenwangen (11) vertikale Stege (13) aufweisen und die Stege (13) als Träger für die Seitenwangen (11) und als Zuführungskanäle für Gase und Gasgemische ausgebildet sind.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in Längsrichtung entlang des Rostsystems Kanäle vorgesehen sind und die Kanäle als Träger für die Seitenwangen (11) und/oder Firstwangen (1) und als Zuführungskanäle für Gase und Gasgemische ausgebildet sind.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Rauchgase durch die Zuführungskanäle und Austrittsöffnungen (8, 9) in den Brennraum des Brennstoffkessels geleitet wird.
- Rostsystem nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß Zusatzluft durch die Zuführungskanäle und Austrittsöffnungen (8, 9) in den Brennraum des Brennstoffkessels geleitet wird.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Platten (17) als Hohlkörper ausgebildet sind, die Platten (17) wendelförmige Leit- und Stabilisierungsrippen (19, 23) haben und einen an den Hohlkörper angeschlossenen Einlaß (20) und einen Auslaß (21) für ein Kühlmittel aufweisen.
- Rostsystem nach Anspruch 12, dadurch gekennzeichnet, daß der Einlaß (20) und der Auslaß (21) an der Unterseite jeweils einer Platte (17) angeordnet ist.
- Rostsystem nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß das Kühlmittel ein Gas, Gasgemisch oder ein Fluid ist.
- Rostsystem nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß ein Wärmetauscher für das Kühlmittel vorgesehen ist, wobei die von dem Kühlmittel abgeführte Energie einem Einsatzstoff zur Rostverbrennung zugeführt wird.
- Rostsystem nach Anspruch 15, dadurch gekennzeichnet, daß der Einsatzstoff Verbrennungsluft ist.
- Rostsystem nach Anspruch 15, dadurch gekennzeichnet, daß die abgeführte Energie dem Brennstoff zur Trocknung zugeführt wird.
- Rostsystem nach Anspruch 15, dadurch gekennzeichnet, daß die abgeführte Energie zur Kondensataufwärmung verwendet wird.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede zweite Platte (17) hin- und herbewegbar und mit einem entsprechenden Antrieb versehen ist, wobei die festen Platten an einer gemeinsamen ersten Halterung und die bewegbaren Platten an einer gemeinsamen zweiten Halterung befestigt sind, und daß die Befestigung jeder Platte (17) an seiner Halterung höhenverstellbar ist.
- Rostsystem nach Anspruch 19, dadurch gekennzeichnet, daß die festen Platten im Bereich der Seiten- und Firstwangen (11, 1) und die bewegbaren Platten (17) mit der zweiten Halterung einzeln lösbar befestigt sind.
- Rostsystem nach Anspruch 19 oder 20, dadurch gekennzeichnet, daß die festen Platten und die beweglichen Platten im wesentlichen identisch sind.
- Rostsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Firstwangen (1) und die Seitenwangen (11) starr sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19910425 | 1999-03-10 | ||
DE19910425A DE19910425C2 (de) | 1999-03-10 | 1999-03-10 | Rostsystem für einen Brennstoffkessel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1035373A1 EP1035373A1 (de) | 2000-09-13 |
EP1035373B1 true EP1035373B1 (de) | 2004-01-21 |
Family
ID=7900299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00104734A Expired - Lifetime EP1035373B1 (de) | 1999-03-10 | 2000-03-04 | Rostsystem für einen Brennstoffkessel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1035373B1 (de) |
CZ (1) | CZ296050B6 (de) |
DE (2) | DE19910425C2 (de) |
PL (1) | PL190813B1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2868516B1 (fr) * | 2004-04-01 | 2006-06-16 | Vinci Environnement Sa | Grille pour four d'incineration des ordures menageres |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2809845C2 (de) * | 1978-03-07 | 1980-03-06 | Josef Martin Feuerungsbau Gmbh, 8000 Muenchen | Rostbelag, insbesondere für Großfeuerungen |
FR2599126B1 (fr) * | 1986-05-22 | 1988-09-16 | Mediterranee Const Navales Ind | Dispositif compensateur de deformations thermiques transversales d'une grille d'un foyer de combustion ou d'incineration; son procede de demontage et de montage |
FR2609530B1 (fr) | 1987-01-09 | 1991-01-11 | Traitement Indl Residus Urbain | Grille de foyer, avec des barreaux transversaux en elements solidarises par leurs faces frontales |
DE4000973C1 (de) * | 1990-01-16 | 1991-02-28 | Teset Thermo-Energie-System Entsorgungs-Technologie, Weismes/Waimes, Be | |
CH684118A5 (de) * | 1993-04-20 | 1994-07-15 | Doikos Investments Ltd | Verfahren zum Verbrennen von Kehricht auf einem Verbrennungsrost sowie Verbrennungsrost zur Ausübung des Verfahrens und Rostplatte für einen solchen Verbrennungsrost. |
AU1530795A (en) * | 1994-02-07 | 1995-08-21 | Techform Engineering Ag | Process for burning solids with a sliding firebar system |
DE19622424C2 (de) * | 1996-06-04 | 1998-10-29 | Martin Umwelt & Energietech | Rostelement und Rost mit Flüssigkeitskühlung |
DE29809059U1 (de) * | 1998-05-19 | 1999-02-04 | Stadick, Robert, 85599 Parsdorf | Rost für Brennstoffkessel |
-
1999
- 1999-03-10 DE DE19910425A patent/DE19910425C2/de not_active Revoked
-
2000
- 2000-03-04 DE DE50005055T patent/DE50005055D1/de not_active Expired - Lifetime
- 2000-03-04 EP EP00104734A patent/EP1035373B1/de not_active Expired - Lifetime
- 2000-03-07 CZ CZ2000827A patent/CZ296050B6/cs not_active IP Right Cessation
- 2000-03-09 PL PL338915A patent/PL190813B1/pl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PL338915A1 (en) | 2000-09-11 |
DE50005055D1 (de) | 2004-02-26 |
CZ296050B6 (cs) | 2005-12-14 |
DE19910425A1 (de) | 2000-09-21 |
PL190813B1 (pl) | 2006-02-28 |
DE19910425C2 (de) | 2000-12-28 |
EP1035373A1 (de) | 2000-09-13 |
CZ2000827A3 (cs) | 2000-10-11 |
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