EP1412689A1 - Procede et dispositif de refroidissement des alveoles d'un four a chambres - Google Patents
Procede et dispositif de refroidissement des alveoles d'un four a chambresInfo
- Publication number
- EP1412689A1 EP1412689A1 EP02740828A EP02740828A EP1412689A1 EP 1412689 A1 EP1412689 A1 EP 1412689A1 EP 02740828 A EP02740828 A EP 02740828A EP 02740828 A EP02740828 A EP 02740828A EP 1412689 A1 EP1412689 A1 EP 1412689A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- cell
- walls
- cooling
- fluid
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type or of the type in which a segmental kiln moves over a stationary charge
- F27B13/02—Furnaces with both stationary charge and progression of heating, e.g. of ring type or of the type in which a segmental kiln moves over a stationary charge of multiple-chamber type with permanent partitions; Combinations of furnaces
Definitions
- the invention relates to the field of ovens with chambers known as “ring furnace” (“ring furnace” in English) for the cooking of carbonaceous blocks, and in particular ovens with open type chamber.
- the invention relates more particularly to a method and a device for cooling the cells of such ovens before servicing and maintenance operations.
- Rotating fire ovens with open type chambers are well known in themselves and described in particular in French patent applications FR 2 600 152 (corresponding to American patent US 4 859 175) and FR 2 535 834 (corresponding to the request British GB 2,129,918).
- a rotary fire oven comprises a succession of aligned chambers, each chamber comprising a plurality of elongated cells separated by hollow heating partitions.
- a cycle of cooking carbonaceous blocks typically comprises loading the cells of this chamber into raw carbonaceous blocks, heating this chamber to the temperature of cooking carbonaceous blocks (typically from 1100 to 1200 ° C. ), cooling the chamber to a temperature which makes it possible to remove the cooked carbonaceous blocks and cooling the chamber to ambient temperature.
- the principle of the rotating light consists of carrying out the heating cycle successively on the furnace chambers by moving the heating means (such as burner rails) and suction means.
- a given chamber successively goes through periods of preheating, cooking and cooling.
- around ten rooms are “active” simultaneously: four in a so-called cooling zone, three in a so-called heating zone, and three in a so-called preheating zone.
- the active chambers constitute what is called a "fire".
- the Applicant has therefore sought simple and industrializable means for accelerating the cooling of the cells.
- the subject of the invention is a method for cooling a cell of a rotary fire oven, characterized in that it comprises the production of a flow F of cooling fluid inside the cell and in that at least a portion Fr of said flow F flows substantially vertically along determined surfaces of the walls of the cell.
- the subject of the invention is also a device for cooling a cell of a rotary fire oven, characterized in that it comprises:
- At least a first means capable of producing a flow F of cooling fluid inside the cell such as a ventilation means
- the invention also relates to a method of cooling a cell of a rotary fire oven using the device of the invention.
- the Applicant has found that the substantially vertical flow of the coolant flow near the walls of the cell made it possible to considerably accelerate the cooling rate of the latter.
- the invention can thus make it possible, in certain cases, to delete a chamber by fire in an industrial-sized oven.
- Figure 1 illustrates a partially exploded perspective view of a rotary fire oven.
- FIG. 2 illustrates, seen from above (axis Z), a bay of a rotating fire oven.
- FIG. 3 illustrates an embodiment of the device of the invention, in the standby position, (a) seen from the narrow side (axis X) and (b) seen from the wide side (axis Y).
- FIG. 4 illustrates an embodiment of the device of the invention, in the deployed position, (a) seen from the narrow side (axis X) and (b) seen from the wide side (axis Y).
- FIGS 5 and 6 illustrate the movement of the coolant flow obtained with the preferred embodiment of the device of the invention.
- a rotary fire oven comprises a succession of chambers (10, 11, 12, ...) arranged in series.
- Each chamber comprises an alternation, in the transverse direction (axis Y), of cells (2) of elongated shape and of hollow heating partitions (3) arranged in the longitudinal direction (axis X).
- the dotted line (1) in FIG. 1 delimits one of the rooms and shows that it comprises several cells (2) arranged in parallel and separated by partitions (3).
- the cells (2) are delimited by heating partitions (3), pillars of transverse walls (4) and a floor (24).
- the heating partitions (3) and the pillars of transverse walls (4) form substantially vertical walls (2A, 2B); the floor (24) forms a substantially horizontal bottom (2C).
- the ends of the heating partitions (3) generally comprise transverse walls (5) provided with openings (6).
- the heating partitions (3) comprise thin side walls (9) generally separated by spacers (7) and baffles (8).
- the heating partitions (3) are provided with access means (20) called “openers” which are used in particular to introduce heating means (such as burner injectors) (not shown) or suction means (21, 22).
- the elements (2, 3, 4, 5, 24) of the furnace are formed of refractory materials, typically using refractory bricks. Each cell (2) typically has a depth of 5 m.
- Figure 1 shows a typical stack of carbon blocks (31) in a cell (2), with a coating powder (32), during a cooking operation thereof.
- a rotary fire oven typically comprises two parallel spans, each having a length of the order of a hundred meters.
- the spans are generally delimited by side walls (23).
- a gas flow consisting of air, heating gas, vapors released by carbonaceous blocks or combustion gases (or, more often, a mixture of these) circulates, in the long direction of the furnace (axis X), in a succession of hollow heating partitions (3) which communicate with each other.
- This gas flow is blown upstream of the active chambers and is sucked downstream of the latter.
- the heat produced by the combustion of the gases is transmitted to the carbon blocks (31) contained in the cells (2), which causes them to cook.
- the method of cooling a cell (2) of a rotary fire oven, said cell (2) comprising walls (2A, 2B), is characterized in that it comprises the production of a flow F of cooling fluid inside the cell (2) and that at least a portion Fr of said flow F flows in a substantially vertical fashion along determined surfaces of the walls (2A, 2B) of the alveolus (2).
- the interior of the cell corresponds to the space normally occupied by the carbon blocks (31) and the coating powder or "dust" (32) during cooking.
- a substantially vertical flow means a flow for which the vertical component of the gas flow F is significantly larger than the horizontal components (typically about ten times greater), so as to maximize the flow of thermal energy extracted from the walls and evacuated outside the cell.
- Said flow is preferably not very turbulent, and preferably still substantially laminar.
- Said vertical flow can be upward or downward.
- Said flow F is typically a forced flow, which is produced for example by blowing or suctioning coolant.
- Said part Fr of said flow F typically flows in a so-called “flow” section S near the walls of the cell, with a rapid flow of said fluid in a direction substantially parallel to said walls.
- the flow Fr preferably flows in a restricted volume N, close to said walls, which makes it possible to obtain an efficient evacuation of the heat from the walls for acceptable fluid flow rates (typically between 1 and 10 3m 3 / s).
- Said flow F typically comprises two main components, namely said part Fr, which “licks” the walls of the cell, and a part Fo, which introduces the fluid in the cell.
- the flows Fr and Fo are substantially parallel and flow in opposite directions, as illustrated in FIG. 6.
- the flow rates of Fr and Fo are typically substantially identical.
- the cooling fluid is preferably a gas, or a mixture of gases. It is advantageous to use air in order to limit operating costs, that is to say that said fluid contains air.
- the cooling fluid is advantageously wet, that is to say that it contains water (typically in the form of vapor or fine spouts), so as to increase its specific thermal capacity.
- the humidity level of the fluid can be adjusted, for example as a function of the temperature of the walls of the cell.
- said fluid comprises a mixture of air and humidity.
- the fluid which is injected into the cell is air at room temperature more or less charged with humidity.
- the coolant flow can be in an open circuit, in the sense that it is discharged into the ambient atmosphere after having absorbed part of the heat from the walls of a cell when it flows inside it. this.
- the device (100) for cooling a cell (2) of a rotary kiln, said cell (2) comprising walls (2A, 2B) and a bottom (2C), is characterized in that 'He understands :
- At least a first means (101) capable of producing a flow F of coolant inside the cell (2);
- At least a second means (103) capable of causing a substantially vertical flow of at least a portion Fr of said flow F along determined surfaces of the walls (2A, 2B) of the cell (2).
- Said first means (101) is typically a ventilation means, such as a suction or blowing means.
- Said second means (103) is advantageously a so-called “confinement” means capable of reducing the flow section S of said flow F near the walls of the cell, so as to cause rapid flow of said fluid in a substantially parallel direction to the said walls. The flow F then circulates in a restricted volume V near said walls.
- the flow section S is approximately equal to L x P, where L is the confinement width and P is the mean interior perimeter of the cell.
- the width L is preferably between 5 cm and 25 cm, and more preferably between 10 cm and 20 cm. Too small a width leads to significant pressure drops. Too large a width leads to too low a flow rate, and therefore an insufficient cooling rate.
- the confinement of said flow F also results in an increase in the flow speed Ve of said fluid.
- the speed of flow of the cooling fluid in said part Fr of said flow F is advantageously between 2 and 20 m / s. Too low a speed does not make it possible to advantageously reduce the cooling time of a cell.
- a very high flow speed on the other hand, requires expensive means of ventilation and high energy consumption.
- the fluid flow rate of said flow is typically between 1 and 10 Nm 3 / s for industrial ovens.
- the confinement means (103) is typically a duct, such as a rigid or flexible duct or a flexible skirt, of which a first end is connected to said (or to each said) ventilation means (101) and of which a second end (104) can be placed inside the cell (2).
- the cooling fluid which is set in motion using (or) means (s) of ventilation (101)
- the conduit restricts the flow area S of said flow by forcing said flow to flow between the surface of said conduit and said walls (2A, 2B).
- the confinement means (103) is advantageously removable and / or retractable, so as to facilitate the positioning of the device.
- the confinement means (103) can be a detachable rigid conduit (that is to say a conduit which can be detached from the device (100)) which can be put in place in the cell and then connected to the ventilation means (101) of said device.
- the confinement means (103) can be connected to the ventilation means (101) using a connection means (102).
- the confinement means (103) is a retractable tabular duct having at least one retracted position (as illustrated in FIG. 3) and at least one deployed position (as illustrated in Figure 4).
- the length of said conduit can then be variable or adjustable. This embodiment has the advantage of allowing easy installation of the device.
- the retractable tabular duct can be in the form of a bellows (typically when the section is substantially circular or ovoid) or accordion (typically when the section is substantially rectangular or square), which facilitates its deployment.
- Said conduit may also have other structures, such as a telescopic structure formed by several sections of conduit inserted into each other in a sliding manner.
- the conduit (103) can be retracted or deployed using the deployment means (106, 107), such as a motor and cables.
- the conduit (103) is preferably such that it can be deployed up to a small distance D from the bottom (2C) of the cell, said distance D preferably being less than approximately 50 cm.
- the distance D is typically of the order of 20 cm.
- the dimensions of the duct are preferably such that the average distance E between it and the walls of the cell is between 5 and 25 cm, and more preferably between 10 and 20 cm. A too small distance leads to significant pressure drops which can be prohibitive. Too great a distance leads to a flow rate too low, and therefore insufficient cooling rate. A distance of about 15 cm has been found very satisfactory.
- said first means (which are typically ventilation means) can produce a downward flow in the or each said duct and an upward vertical flow along said walls (2A, 2B) of the cell ( 2).
- said first means can produce an upward flow in the or each said duct and a downward vertical flow along said walls (2A, 2B) of the cell (2).
- the ventilation means (101) are blowing means, such as a fan, when one seeks to create an upward flow along the walls (2A, 2B) and suction means when one seeks to create a downward flow along the walls (2A, 2B).
- the so-called "open" end (104) of (or each ) conduit (103) may be provided with a diffuser (108) capable of promoting an upward deflection of the flow of fluid leaving the conduit through said end.
- the diffuser is advantageously such that it reduces the pressure losses at the so-called open end (104) of the (or each) conduit (103).
- the duct is preferably made of a flexible material, with high modulus, capable of withstanding temperatures less than or equal to approximately 250 ° C. and the blowing pressure, such as an aromatic polyamide fiber (such as Kevlar® ).
- Said material can be a composite, such as a multilayer. Said material is preferably still sealed in order to reduce in particular the pressure drops along said conduit.
- said material can be, for example, a multilayer composite comprising a flexible fabric (such as a Kevlar® fabric) and a waterproof layer (such as an aluminum layer).
- a multilayer comprising a flexible layer and an aluminum layer (on the outer surface of the duct) also makes it possible to reflect the thermal radiation coming from the walls of the alveolus and thus avoid excessive heating of the underlying flexible layer.
- the device of the invention (100) is preferably removable. It advantageously includes support elements (105) which allow it to be manipulated and positioned over a cell.
- the device according to the invention is able to implement the cooling method of the invention.
- the device according to the invention can be used for cooling a cell (2) of a rotary fire oven, and in particular in a method of cooling a cell (2) of a rotary fire oven comprising:
- the device according to the invention can be used in a process for cooling a cell (2) of a rotary fire oven comprising:
- the deployment of the conduit can follow a predetermined progression or be controlled as a function of measurable parameters such as the temperature of the walls of the cell.
- the cooling of the cell was measured using thermocouples plugged into its walls.
- the initial temperature of the bottom of the cell was around 130 to 200 ° C, depending on the position in the direction of the fire.
- the time required for the temperature of the bottom of the cell to drop to 20 ° C. was typically 40 hours. With the device of the invention, this time could be reduced to values of the order of 10 hours.
- the device of the invention has been found to be quiet.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Processing Of Solid Wastes (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0107083 | 2001-05-30 | ||
| FR0107083A FR2825455B1 (fr) | 2001-05-30 | 2001-05-30 | Procede et dispositif de refroidissement des alveoles d'un four a chambres |
| PCT/FR2002/001785 WO2002097349A1 (fr) | 2001-05-30 | 2002-05-28 | Procede et dispositif de refroidissement des alveoles d'un four a chambres |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1412689A1 true EP1412689A1 (fr) | 2004-04-28 |
| EP1412689B1 EP1412689B1 (fr) | 2006-08-16 |
Family
ID=8863773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02740828A Expired - Lifetime EP1412689B1 (fr) | 2001-05-30 | 2002-05-28 | Procede et dispositif de refroidissement des alveoles d'un four a chambres |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US7192271B2 (fr) |
| EP (1) | EP1412689B1 (fr) |
| CN (1) | CN100357691C (fr) |
| AR (1) | AR033782A1 (fr) |
| AT (1) | ATE336702T1 (fr) |
| AU (1) | AU2002314263B2 (fr) |
| BR (1) | BR0209655A (fr) |
| CA (1) | CA2446794A1 (fr) |
| DE (1) | DE60214002D1 (fr) |
| EG (1) | EG23027A (fr) |
| ES (1) | ES2269722T3 (fr) |
| FR (1) | FR2825455B1 (fr) |
| NO (1) | NO328741B1 (fr) |
| NZ (1) | NZ529515A (fr) |
| RO (1) | RO121490B1 (fr) |
| RU (1) | RU2260158C1 (fr) |
| WO (1) | WO2002097349A1 (fr) |
| ZA (1) | ZA200308665B (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992895B1 (fr) * | 2007-05-14 | 2015-10-14 | Rio Tinto Alcan International Limited | Four à feu mobile doté de chambres de four à grand rapport d'aspect horizontal et procédé pour la cuisson d'articles carbonés dans ce four |
| FR2946737B1 (fr) * | 2009-06-15 | 2013-11-15 | Alcan Int Ltd | Procede de regulation d'un four de cuisson de blocs carbones et four adapte a sa mise en oeuvre. |
| RU2452910C2 (ru) * | 2010-08-04 | 2012-06-10 | Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт конструкционных материалов на основе графита "НИИграфит" | Электрическая печь графитации |
| CN114777499A (zh) * | 2022-04-27 | 2022-07-22 | 陕西彩虹工业智能科技有限公司 | 一种用于制造柔性玻璃的成型设备冷却系统及方法 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE565015A (fr) * | ||||
| FR628332A (fr) * | 1927-01-29 | 1927-10-21 | Perfectionnements aux fours pour la cuisson des produits céramiques | |
| US1829334A (en) * | 1928-05-02 | 1931-10-27 | Fred W Birtch | Water heater |
| US2561424A (en) * | 1948-11-17 | 1951-07-24 | Modine Mfg Co | Heat transfer element |
| SU388188A1 (ru) * | 1971-08-06 | 1973-06-22 | Б. Е. Зайцев, Н. К. Житков, Е. В. Войновский , Н. Н. Игнатов Завод Электросталь И. Ф. Тевос | Способ охлаждения вакуумной дуговой печи |
| GB1533588A (en) * | 1975-04-09 | 1978-11-29 | Refractory Serv Int Ltd | Muffle-type series-fired furnaces for heat treatment |
| SU840653A1 (ru) * | 1976-04-19 | 1981-06-23 | Производственное Объединение"Центроэнергоцветмет" | Способ охлаждени футеровки рудно-ТЕРМичЕСКиХ пЕчЕй |
| IT1073727B (it) * | 1976-05-05 | 1985-04-17 | Elettrocarbonium Spa | Perfezionamento nei forni continui ad anello per la cottura o ricottura di materiali carboniosi |
| IT1202823B (it) * | 1978-05-29 | 1989-02-09 | Elettrocarbonium Spa | Perfezionamento nei forni continui ad anello per la cottura e la ricottura di materiali carboniosi |
| SU881127A1 (ru) * | 1980-03-24 | 1981-11-15 | Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов, Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии | Способ охлаждени газохода металлургической печи |
| DE3170290D1 (en) * | 1981-09-08 | 1985-06-05 | Dow Chemical Nederland | Heat exchanger and use thereof |
| FR2535834B1 (fr) * | 1982-11-09 | 1987-11-06 | Pechiney Aluminium | Four a chambres ouvertes pour la cuisson de blocs carbones, comportant une pipe de soufflage |
| FR2600151B1 (fr) * | 1986-06-17 | 1988-08-26 | Pechiney Aluminium | Pipes a mamelles orientables pour fours de cuisson de blocs carbones |
| AU594480B2 (en) * | 1986-06-17 | 1990-03-08 | Aluminium Pechiney | Optimizing combustion in open chamber furnaces for firing carbon blocks |
| JP2631892B2 (ja) * | 1989-03-27 | 1997-07-16 | 株式会社日本ケミカル・プラント・コンサルタント | 加熱装置 |
| NO180215C (no) * | 1995-02-10 | 1997-03-05 | Norsk Hydro As | Anordning ved mottrykksvifte i en ringkammerovn |
| CN2237050Y (zh) * | 1995-06-22 | 1996-10-09 | 鞍山钢铁公司 | 喷流冷却壁 |
| DE29614958U1 (de) * | 1996-08-28 | 1998-01-02 | Häßler, Andreas, Dipl.-Ing. (FH), 89155 Erbach | Vorrichtung zum Entgasen und Kühlen von gestapeltem keramischen Brenngut in Durchlauföfen |
| FR2777072B1 (fr) * | 1998-04-03 | 2000-05-19 | Pechiney Aluminium | Procede et dispositif de regulation des fours de cuisson a feu tournant |
| FR2779811B1 (fr) * | 1998-06-11 | 2000-07-28 | Pechiney Aluminium | Four a feu tournant a flux central tubulaire |
-
2001
- 2001-05-30 FR FR0107083A patent/FR2825455B1/fr not_active Expired - Fee Related
-
2002
- 2002-05-20 EG EG20020529A patent/EG23027A/xx active
- 2002-05-28 AR ARP020101987A patent/AR033782A1/es active IP Right Grant
- 2002-05-28 RU RU2003137804/03A patent/RU2260158C1/ru not_active IP Right Cessation
- 2002-05-28 ES ES02740828T patent/ES2269722T3/es not_active Expired - Lifetime
- 2002-05-28 US US10/476,488 patent/US7192271B2/en not_active Expired - Fee Related
- 2002-05-28 NZ NZ529515A patent/NZ529515A/en unknown
- 2002-05-28 CA CA002446794A patent/CA2446794A1/fr not_active Abandoned
- 2002-05-28 DE DE60214002T patent/DE60214002D1/de not_active Expired - Lifetime
- 2002-05-28 WO PCT/FR2002/001785 patent/WO2002097349A1/fr not_active Ceased
- 2002-05-28 EP EP02740828A patent/EP1412689B1/fr not_active Expired - Lifetime
- 2002-05-28 CN CNB028108191A patent/CN100357691C/zh not_active Expired - Fee Related
- 2002-05-28 AU AU2002314263A patent/AU2002314263B2/en not_active Ceased
- 2002-05-28 RO ROA200300972A patent/RO121490B1/ro unknown
- 2002-05-28 BR BR0209655-2A patent/BR0209655A/pt not_active Application Discontinuation
- 2002-05-28 AT AT02740828T patent/ATE336702T1/de not_active IP Right Cessation
-
2003
- 2003-11-06 ZA ZA200308665A patent/ZA200308665B/en unknown
- 2003-11-21 NO NO20035195A patent/NO328741B1/no not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02097349A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2260158C1 (ru) | 2005-09-10 |
| AR033782A1 (es) | 2004-01-07 |
| CN100357691C (zh) | 2007-12-26 |
| RU2003137804A (ru) | 2005-05-27 |
| FR2825455A1 (fr) | 2002-12-06 |
| NO20035195L (no) | 2003-11-21 |
| ES2269722T3 (es) | 2007-04-01 |
| DE60214002D1 (de) | 2006-09-28 |
| EP1412689B1 (fr) | 2006-08-16 |
| FR2825455B1 (fr) | 2003-07-11 |
| ATE336702T1 (de) | 2006-09-15 |
| US7192271B2 (en) | 2007-03-20 |
| RO121490B1 (ro) | 2007-06-29 |
| CN1513108A (zh) | 2004-07-14 |
| BR0209655A (pt) | 2004-04-20 |
| NZ529515A (en) | 2006-04-28 |
| US20040137396A1 (en) | 2004-07-15 |
| WO2002097349A1 (fr) | 2002-12-05 |
| AU2002314263B2 (en) | 2008-04-17 |
| NO328741B1 (no) | 2010-05-03 |
| NO20035195D0 (no) | 2003-11-21 |
| EG23027A (en) | 2004-01-31 |
| CA2446794A1 (fr) | 2002-12-05 |
| ZA200308665B (en) | 2004-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0033285B1 (fr) | Dispositif de mélange avec turbulence de fluides gazeux et de particules solides | |
| EP1466031B1 (fr) | Procede et installation pour la densification de substrats par infiltration chimique en phase vapeur | |
| FR2976061A1 (fr) | Dispositif de traitement thermique, en particulier de materiaux divises, au moins par rayonnement micro-ondes | |
| BE897104A (fr) | Incinerateur vertical a echange thermique regenerateur, | |
| EP2513582A1 (fr) | Installation et procédé de préchauffage d'une bande d'acier en défilement continu | |
| EP0284464B1 (fr) | Four pour déshydrater pulvérulents sable et granulats | |
| WO2018020087A1 (fr) | Support de verre a aspiration | |
| US20120322016A1 (en) | Roller hearth calcining furnace and method of use | |
| EP1412689B1 (fr) | Procede et dispositif de refroidissement des alveoles d'un four a chambres | |
| EP0000111A1 (fr) | Appareil pour le traitement thermique d'un matelas de fibres portant un liant thermoducissable | |
| FR2903178A1 (fr) | Procede et dispositif de nettoyage des surfaces de ruissellement d'eau dans un echangeur thermique air/eau | |
| EP0311538B1 (fr) | Procédé et dispositif de graphitisation continue simultanée de produits carbonés longs et de grains carbonés circulant à contre-courant | |
| EP1362007B1 (fr) | Procede et installation de traitement de deshydroxylation de silicate d'aluminium | |
| EP2668457B1 (fr) | Procede et dispositif de traitement thermique du bois avec des gaz deshydrates et depoussieres | |
| WO2018051027A1 (fr) | Module de cuisson de four tunnel linéaire pour produits de boulangerie, viennoiserie et similaires et four tunnel linéaire comportant au moins un tel module | |
| EP2694884B1 (fr) | Système solaire permettant de reproduire l'effet d'une flamme de combustion | |
| EP0972562B1 (fr) | Dispositif d'élimination de dépôts carbonés sur des objets solides | |
| WO2012085422A1 (fr) | Module de chauffage, systeme de chauffage comprenant plusieurs modules de chauffage et installation comprenant un tel systeme de chauffage | |
| EP0500470B1 (fr) | Installation d'incubation et d'éclosion pour oeufs | |
| BE1026105B1 (fr) | Appareil et procede de torrefaction | |
| FR2790545A1 (fr) | Dispositif pour l'extraction de chaleur a partir d'un gaz et four equipe du dispositif | |
| FR2790544A1 (fr) | Dispositif pour l'extraction de chaleur a partir de gaz et four equipe du dispositif | |
| BE535420A (fr) | ||
| FR2775292A1 (fr) | Procede et dispositif de traitement thermique de materiaux comportant des fibres ligno-cellulosiques |
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: 20040223 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20060816 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060816 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060816 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060816 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
| REF | Corresponds to: |
Ref document number: 60214002 Country of ref document: DE Date of ref document: 20060928 Kind code of ref document: P |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20061116 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20061116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20061117 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20061030 |
|
| REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20060404001 Country of ref document: GR |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070116 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2269722 Country of ref document: ES Kind code of ref document: T3 |
|
| 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 |
Effective date: 20070518 |
|
| BERE | Be: lapsed |
Owner name: ALUMINIUM PECHINEY Effective date: 20070531 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070531 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070531 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070531 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070531 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20080526 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20080524 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080529 Year of fee payment: 7 |
|
| 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: 20070528 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060816 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090518 Year of fee payment: 8 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060816 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 20090430 Year of fee payment: 8 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090528 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20091201 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091201 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090528 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20090529 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090529 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110131 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101202 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100531 |