EP1427978B1 - Procede pour ameliorer le profil de temperature d'un four - Google Patents
Procede pour ameliorer le profil de temperature d'un four Download PDFInfo
- Publication number
- EP1427978B1 EP1427978B1 EP02772511A EP02772511A EP1427978B1 EP 1427978 B1 EP1427978 B1 EP 1427978B1 EP 02772511 A EP02772511 A EP 02772511A EP 02772511 A EP02772511 A EP 02772511A EP 1427978 B1 EP1427978 B1 EP 1427978B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zone
- heating means
- furnace
- temperature
- burners
- 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
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000003303 reheating Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 41
- 239000003546 flue gas Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000007800 oxidant agent Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000003517 fume Substances 0.000 description 34
- 239000000047 product Substances 0.000 description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 229940082150 encore Drugs 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
Definitions
- the present invention relates to a method for improving the profile temperature of an oven and in particular the temperature profile of a furnace of heating or annealing of products, especially products such as slabs or billets or flat products.
- Reheating and / or temperature keeping ovens are generally used in the iron and steel industry, especially in the continuous casting, in which the liquid metal is cast to form intermediate products which, before their passage in the rolling mill at the end of continuous casting chain, pass through at least one so-called reheating furnace, wherein the intermediate product is brought or maintained at a temperature adequate, as uniform as possible, in order to be rolled into the best conditions.
- a reheat furnace of this type and its method of use is described, for example, in EP-A-0 370 916.
- the dead zone of an oven is not regulated because heat exchanges are totally dependent on the parameters of operation of the heating zone and possibly the recuperator.
- the thermal profiles in the said zone are not optimized because they depend on material flow conditions (fumes and products metallurgical) in the furnace and their temperature conditions.
- the only constraint that is usually imposed by the user of the furnace is the "exhaustion" of the fumes (optimal heat exchange between and products or the oven) in this zone in order to respect the limitation the flue gas outlet temperature of this zone so as not to damage the flue gas recovery system and limit losses thermal fumes if they are not recovered.
- this area is sized to ensure sufficient cooling of fumes from the heated.
- Figure 1 allows to better explain the operation of an oven known type of heating and the problems to be solved to improve its operation.
- the reheat furnace 1 is shown schematically with advancing metallurgical products (thanks to a system of spars 14 and drive means not shown on the Figure 1) from right to left, the direction of advancement of these products being represented by the arrows 7.
- the oven 1 here comprises a heating zone 2 in which the temperature varies between 1200 ° C and 1400 ° C, this zone 2 being equipped with burners and having one or more control zones. The burners do not are not represented in this figure. Only the hot air circuit is summarily represented (13).
- the oven also has a dead zone 3, which is usually the preferred pathway for smokes, in which the temperature of the fumes is generally of the order of 900 ° C to 1100 ° C, which is sufficient to preheat and heat exchange effective way with steel products and finally a sub-heated area 4 which is part of Dead Zone 3, which is generally located near of entry of iron and steel products and generally above these (especially if the flue gas recovery pipe 8 is located under the entry level of steel products) and whose temperature varies between 600 ° C and 900 ° C: this temperature is generally too low for effectively preheat steel products.
- the fumes are used to preheat the air (oxidizer) from oxidizer generator 11 via line 10, in the recuperator 9 where the oxidizer exits preheated in the pipe 12 which feeds the burners '13 in combustion (the fuel lines of the burners are not shown in Figure 1).
- the dead zone 3 is little heated throughout the duration of production and there is in fact the possibility to have, at least during part of the production time, a higher temperature in this area in order to have a better preheating of iron and steel products.
- this temperature increase in the dead zone should not result in a corresponding increase in the temperature of the fumes at the exit of the oven. Indeed, if one is able to increase the temperature of the dead zone (and therefore fumes) of about 200 ° C, by example, the problem is that we do not want these fumes come out of the oven at a temperature that is 200 ° C higher than their usual outlet temperature. Indeed, if there is no recuperator oven outlet, the flue gas temperature being higher than 200 ° C, it is all the corresponding thermal energy that is lost and the thermal balance (therefore financial) oven becomes unacceptable.
- recuperator (as depicted in Figure 1), the latter usually working at a temperature close to its maximum temperature (in other words, the temperature of the fumes entering the recuperator is close to the maximum temperature that can support the recuperator without suffering damage), it is not possible to feed it with fumes temperature would have been increased by 200 ° C. Therefore, the man of profession is confronted with the problem of the substantial increase in temperature of the dead zone of the furnace, and in particular its temperature of vault without a corresponding substantial increase in flue gas temperature out of the oven.
- the invention makes it possible to solve the technical problem thus posed.
- the invention relates to a method as defined in claim 1, and plans to use heating means in the dead zone (3) of the furnace (or having an action on the dead zone of the oven), without substantial smoke generation to avoid any substantial transfer of energy, and in particular the energy generated by these complementary heating means, through fumes (including additional fumes).
- Substantial creation of additional fumes means, according to the invention, the creation of at least 10% by volume of fumes additional, in relation to the volume of fumes created in the furnace the absence of complementary heating means.
- the heating means will be dimensioned so as not to create more than 10% flight. Additional fumes, and preferably not more than 5% vol. of fumes additional, compared to the volume of fumes created by the other burners of the oven, in the absence of these additional heating means (the others furnace burners operating identically in both cases for the purposes comparison of smoke volumes).
- the energy produced by these means may represent up to 20% of the total energy supplied (or up to 25% of the installed initial power).
- the additional heating means will preferably be burners whose oxidant of at least one of these burners is enriched with oxygen (more than 21% O 2 in oxygen), preferably burners with an oxidant greater than 88% vol. of oxygen (for example, oxygen supplied by an adsorption air separation apparatus of the "VSA" type, well known to those skilled in the art) and more preferably oxygen industrially more than 95% pure oxygen by volume, the balance being preferably essentially argon and nitrogen.
- the oxidant may comprise from 1% to 10% by volume of argon and / or from 0.1% to 10% by volume of nitrogen. Of course, an oxidizer containing 100% oxygen is perfectly suitable.
- heating means than oxygen burners can suitable, especially those that do not generate any additional smoke such as radiant panels (electric heating resistors), radiant burners or even regenerative type burners that do not generate practically very little additional smoke in the normal circuit of as they are intended to draw in the outside air, preheat it with heat exchange with a volume of equivalent fumes also sucked into the oven, reject the smoke out of the oven in a specific flue gas circuit after thermal 'exhaustion' of these and use of the air as well preheated as (at least part of) the oxidizer in the burner.
- radiant panels electric heating resistors
- radiant burners or even regenerative type burners that do not generate practically very little additional smoke in the normal circuit of as they are intended to draw in the outside air, preheat it with heat exchange with a volume of equivalent fumes also sucked into the oven, reject the smoke out of the oven in a specific flue gas circuit after thermal 'exhaustion' of these and use of the air as well preheated as (at least part of) the
- Complementary heating means will generally be arranged in the dead zone, opposite the flue gas duct to the recuperator, (when there is such a recuperator).
- the evacuation of the fumes are often at the bottom of the oven, the heating means complementary will therefore preferably be placed in the upper part (towards the vault) of the oven. The opposite situation, however, remains possible.
- the present invention consists of the implementation of a complementary heating means that increases the heat transfer to the product in the dead zone without generating significant energy transfer to the exhaust fumes in the oven.
- this additional heating means makes it possible in particular to bring all or part of the dead zone to its maximum admissible temperature T max vault, this temperature generally depending on the geometry and constituent elements of the furnace, the choice of additional heating means and the speed, in particular, flue circulation being such that the temperature of said flue gas does not exceed the maximum permissible temperature T max Smokes.
- the maximum temperature limit at the recuperator is generally of the order of 900 ° C. According to another aspect of the invention, it is therefore necessary to control the temperature of the fumes at the oven outlet of to keep it below the limit value (eg 900 ° C in the example above), for example by regulating the heating means complementary thanks to the measurement of the flue gas temperature oven.
- the total power delivered in the furnace is greater than from 5 to 20% of the initial power.
- the temperature profile at the oven inlet is higher (900 ° C to 1200 ° C), especially in very small areas previously valued (600 ° C-900 ° C).
- the increase in production generated is between 5% and 25%, depending on the powers installed. The loss of energy under these conditions remains below 5%.
- Oxyfuel burners have been installed in the dead zone of an oven whose power represents about 10% of the power existing air fuel on the furnace.
- the temperature in the dead zone of the oven under test was typically about 650 ° C and the temperature at the head of the recuperator was about 820 ° C (below 850 ° C).
- the oxygen supplied for the oxidant comprises more than 88% O 2 , preferably more than 95% vol O 2 , the balance being nitrogen and argon
- a control temperature raised to 900 ° C in the dead zone there is no significant increase in temperature at the head of the recuperator. Reshaping of the vault temperature results in a 5% increase in production, for a 5% increase in power.
- FIG. 2 the same elements as those of FIG. the same references.
- Reference 21 represents another possible implantation of burners (additional) oxy-fuel in the oven vault for the additional heating of the dead zone 3. Additional burners may also be located in zone 4 (part of zone 3) heated oven, for example at the location of the mark 22 in Figure 2.
- the FIG. 2a which is an enlargement of part of the dead zone 3 of the oven, shows the possible implantation of these different burners 20 and / or 21 and / or 22 and their respective flames 23, 24 on the one hand for the burners 21 and 25 on the other Part of the burner 22. As explained above, one can only choose one single flame 23 or 24, or possibly both (one against the current of smoked, the other in the direction of fumes).
- the method according to the invention also provides flexibility to means of production of a user of ovens, because the additional means or can be stopped or boosted (stop or walk) according to the needs of production / productivity of the oven.
- the oven will operate, according to the invention, with a temperature in the so-called recovery zone and / or exhaustion of the fumes which can very clearly be greater than the limit temperature of the recuperator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Air Supply (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Articles (AREA)
- Gasification And Melting Of Waste (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Electric Ovens (AREA)
- Control Of Temperature (AREA)
Description
- La zone de chauffe ou de plein feu proprement dite où se développe la combustion (brûleurs, plasmas, chauffage auxiliaires, etc.) où la température d'ambiance ou du produit est contrôlée et éventuellement régulée. Cette zone se caractérise par le fait que la chaleur est produite « in-situ », cette chaleur produite étant un moyen direct du contrôle et/ou de la régulation de la température dans cette zone.
- La zone d'épuisement des fumées aussi appelée zone morte, où les fumées ou l'atmosphère provenant de la zone de chauffe perdent au profit du produit sidérurgique entrant dans le four une partie de leur énergie. Cette zone contribue à l'optimisation du rendement thermique du procédé.
- La zone dite de récupération comportant un système de récupération qui permet de transférer une partie de l'énergie encore présente dans les fumées ou dans l'atmosphère qui sort du four, au comburant nécessaire à la combustion (préchauffage du comburant). Par recyclage, cette énergie est réintroduite dans le four, ce qui optimise plus encore le bilan énergétique global.
- amélioration de l'uniformité en température du produit,
- amélioration de la qualité de surface du produit,
- réduction des déformations de produits.
Claims (5)
- Procédé pour augmenter de façon permanente ou temporaire la productivité et/ou la qualité du produit réchauffé en améliorant le profil de température d'un four de réchauffage de produits, ledit four comportant au moins une première zone dite zone morte, dans laquelle les produits introduits dans le four sont réchauffés au contact des fumées issues d'une deuxième zone, située en aval de la première dans le sens de défilement des produits dans le four, cette deuxième zone comportant des moyens de chauffage principaux, engendrant une puissance initiale installée, généralement du type brûleurs air-combustible, la première zone comportant un récupérateur de fumées, caractérisé en ce que des moyens de chauffe complémentaires, dimensionnés de manière à fournir au moins 10 % de la puissance initiale installée et jusqu'à 25 % de celle-ci sont installés dans la zone morte du four, lesdits moyens de chauffe complémentaires créant au plus 10% en volume de fumées additionnelles par rapport au volume de fumées créées dans la zone de chauffe par les moyens de chauffage principaux en l'absence de moyens de chauffe complémentaires dans la zone morte et en ce que les moyens de chauffe complémentaires sont classés parmi les brûleurs oxycombustible, les résistances électriques chauffantes, les brûleurs de type régénératif, provoquant une augmentation de température au niveau du récupérateur qui reste limitée à moins de 20°C.
- Procédé selon la revendication 1, caractérisé en ce qu'au plus 5% en volume de fumées additionnelles sont créées par les moyens de chauffe complémentaire.
- Procédés selon l'une des revendications 1 ou 2, caractérisé en ce que les moyens de chauffe complémentaires sont des brûleurs dont le comburant comporte plus de 88% volume d'oxygène.
- Procédé selon l'une revendications 1 à 3, caractérisé en ce que le comburant comporte de 1 % à 10% en volume d'argon.
- Procédé selon l'un des revendications 1 à 4 , caractérisé en ce que le comburant comporte de 0,1 % à 10% en volume d'azote.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0111537A FR2829232B1 (fr) | 2001-09-06 | 2001-09-06 | Procede pour ameliorer le profil de temperature d'un four |
FR0111537 | 2001-09-06 | ||
PCT/FR2002/002931 WO2003021174A1 (fr) | 2001-09-06 | 2002-08-23 | Procede pour ameliorer le profil de temperature d'un four |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1427978A1 EP1427978A1 (fr) | 2004-06-16 |
EP1427978B1 true EP1427978B1 (fr) | 2005-11-02 |
Family
ID=8867028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02772511A Expired - Lifetime EP1427978B1 (fr) | 2001-09-06 | 2002-08-23 | Procede pour ameliorer le profil de temperature d'un four |
Country Status (10)
Country | Link |
---|---|
US (1) | US6935856B2 (fr) |
EP (1) | EP1427978B1 (fr) |
JP (1) | JP2005501966A (fr) |
CN (1) | CN100397021C (fr) |
AT (1) | ATE308732T1 (fr) |
CA (1) | CA2459802C (fr) |
DE (1) | DE60207095T2 (fr) |
ES (1) | ES2252515T3 (fr) |
FR (1) | FR2829232B1 (fr) |
WO (1) | WO2003021174A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009031557A1 (de) * | 2009-03-02 | 2010-09-09 | Sms Siemag Ag | Energierückgewinnung in Warmbandstraßen durch Umwandlung der Kühlwärme der Stranggießanlage sowie der Restwärme von Brammen und Coils in elektrische Energie oder sonstige Nutzung der aufgefangenen Prozesswärme |
ITRE20060094A1 (it) * | 2006-07-28 | 2008-01-29 | Sacmi Forni Spa | Forno a tunnel per manufatti ceramici |
PT2101906E (pt) * | 2007-01-09 | 2010-10-11 | Air Liquide | Processo de substituição dos tubos de catalisador de um reformador de hidrocarbonetos |
US20090035712A1 (en) * | 2007-08-01 | 2009-02-05 | Debski Paul D | Reheat Furnace System with Reduced Nitrogen Oxides Emissions |
US9440179B2 (en) * | 2014-02-14 | 2016-09-13 | InovaLabs, LLC | Oxygen concentrator pump systems and methods |
MA43067A (fr) | 2015-07-16 | 2018-05-23 | Messer Austria Gmbh | Dispositif et procédé pour réchauffer des produits métalliques |
FR3053105B1 (fr) | 2016-06-27 | 2018-06-15 | Fives Stein | Installation de recuperation d'energie calorifique sur un four a longerons tubulaires et de conversion de celle-ci en electricite au moyen d'une turbine produisant de l'electricite par la mise en oeuvre d'un cycle de rankine |
US11612457B2 (en) | 2017-03-22 | 2023-03-28 | World Class Technology Corporation | Adjustable hook for orthodontic brackets |
FR3142963A1 (fr) | 2022-12-09 | 2024-06-14 | Psa Automobiles Sa | Support de fixation d’un rétroviseur extérieur sur un montant de la structure de caisse d’un véhicule |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087238A (en) * | 1976-09-13 | 1978-05-02 | United States Steel Corporation | Method for enhancing the heating efficiency of continuous slab reheating furnaces |
US4257767A (en) * | 1979-04-30 | 1981-03-24 | General Electric Company | Furnace temperature control |
JPS5848009B2 (ja) * | 1979-11-26 | 1983-10-26 | 日本鋼管株式会社 | 多帯式加熱炉の温度制御方法 |
US4357135A (en) * | 1981-06-05 | 1982-11-02 | North American Mfg. Company | Method and system for controlling multi-zone reheating furnaces |
US4427371A (en) * | 1982-01-20 | 1984-01-24 | Loftus Furnace Company | Pusher furnace with soak zone lifter |
FR2568359B1 (fr) * | 1984-07-27 | 1987-01-09 | Siderurgie Fse Inst Rech | Dispositif pour l'homogeneisation en temperature par voie inductive de produits metalliques en defilement |
DE3540764C1 (de) * | 1985-11-16 | 1987-05-21 | Riedhammer Ludwig Gmbh | Durchlaufofen |
IT1227500B (it) | 1988-11-25 | 1991-04-12 | Heurtey Italiana Spa | Forno di riscaldo, mantenimento ed accumulo di prodotti siderurgici. |
JPH04214183A (ja) * | 1990-12-04 | 1992-08-05 | Ngk Spark Plug Co Ltd | 連続炉 |
TW265286B (fr) * | 1993-06-23 | 1995-12-11 | Gas Res Inst | |
DE4412170C1 (de) * | 1994-04-08 | 1995-08-10 | Krantz Tkt Gmbh | Verfahren zur oxidativen Beseitigung von in Gasen enthaltenen Schadstoffen |
FR2785668B1 (fr) * | 1998-11-10 | 2001-02-23 | Air Liquide | Procede de chauffage d'un four a chargement continu notamment pour produits siderurgiques, et four de chauffage a chargement continu |
US6290492B1 (en) * | 2000-02-15 | 2001-09-18 | Air Products And Chemicals, Inc. | Method of reducing NOx emission from multi-zone reheat furnaces |
FR2813893B1 (fr) * | 2000-09-08 | 2003-03-21 | Air Liquide | Procede de rechauffage de produits metallurgiques |
-
2001
- 2001-09-06 FR FR0111537A patent/FR2829232B1/fr not_active Expired - Fee Related
-
2002
- 2002-08-23 WO PCT/FR2002/002931 patent/WO2003021174A1/fr active IP Right Grant
- 2002-08-23 CN CNB028172752A patent/CN100397021C/zh not_active Expired - Fee Related
- 2002-08-23 ES ES02772511T patent/ES2252515T3/es not_active Expired - Lifetime
- 2002-08-23 EP EP02772511A patent/EP1427978B1/fr not_active Expired - Lifetime
- 2002-08-23 CA CA2459802A patent/CA2459802C/fr not_active Expired - Fee Related
- 2002-08-23 JP JP2003525210A patent/JP2005501966A/ja active Pending
- 2002-08-23 AT AT02772511T patent/ATE308732T1/de not_active IP Right Cessation
- 2002-08-23 US US10/489,083 patent/US6935856B2/en not_active Expired - Lifetime
- 2002-08-23 DE DE60207095T patent/DE60207095T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2003021174A1 (fr) | 2003-03-13 |
CN1625677A (zh) | 2005-06-08 |
CN100397021C (zh) | 2008-06-25 |
JP2005501966A (ja) | 2005-01-20 |
EP1427978A1 (fr) | 2004-06-16 |
DE60207095T2 (de) | 2006-07-20 |
US6935856B2 (en) | 2005-08-30 |
CA2459802A1 (fr) | 2003-03-13 |
FR2829232A1 (fr) | 2003-03-07 |
DE60207095D1 (de) | 2005-12-08 |
FR2829232B1 (fr) | 2004-08-20 |
ATE308732T1 (de) | 2005-11-15 |
US20040259047A1 (en) | 2004-12-23 |
CA2459802C (fr) | 2010-11-30 |
ES2252515T3 (es) | 2006-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2254846B1 (fr) | Four de fusion du verre | |
EP2148935B1 (fr) | Procede et installation de chauffage d'une bande metallique, notamment en vue d'un recuit | |
JP5955958B2 (ja) | ガラスを溶融させるためのハイブリッド設備および方法 | |
EP1427978B1 (fr) | Procede pour ameliorer le profil de temperature d'un four | |
CA2619681A1 (fr) | Prechauffage du combustible et du comburant d'oxybruleurs a partir d'installations de prechauffage d'air de combustion | |
EP2254845B1 (fr) | Four de fusion du verre | |
EP1322900B1 (fr) | Procede de rechauffage de produits metallurgiques | |
WO2009118337A1 (fr) | Four de fusion du verre | |
WO2009118340A1 (fr) | Four de fusion du verre | |
EP3114243B1 (fr) | Four industriel pour chauffer des produits tels des produits siderurgiques | |
EP1001237A1 (fr) | Procédé de chauffage d'un four à chargement continu notamment pour produits sidérurgiques, et four de chauffage à chargement continu | |
EP1134298B1 (fr) | Perfectionnements apportés au préchauffage de bandes métalliques notamment dans des lignes de galvanisation ou de recuit | |
FR2512536A1 (fr) | Procede pour alimenter en energie un four de rechauffage de produits metallurgiques | |
EP0211699B1 (fr) | Brûleur avec des caloducs pour le préchauffage de l'air et du combustible | |
JPH10237540A (ja) | 蓄熱式雰囲気ガス加熱方法及び蓄熱式雰囲気ガス加熱装置 | |
JP3890538B2 (ja) | 連続加熱方法および装置 | |
JP3767414B2 (ja) | 蓄熱式バーナ炉の操業方法および蓄熱式バーナ炉 | |
JP2901633B2 (ja) | 連続焼鈍装置及び連続焼鈍方法 | |
JPH07258740A (ja) | 鋼片の連続加熱方法および装置 | |
FR2728664A1 (fr) | Four a bruleurs transversaux avec inversion et utilisation d'un comburant riche en oxygene |
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: 20040406 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17Q | First examination report despatched |
Effective date: 20040622 |
|
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 BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20051102 Ref country code: SK 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: 20051102 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: 20051102 Ref country code: NL 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: 20051102 Ref country code: CZ 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: 20051102 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: 20051102 Ref country code: GB 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: 20051102 |
|
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 |
|
REF | Corresponds to: |
Ref document number: 60207095 Country of ref document: DE Date of ref document: 20051208 Kind code of ref document: P |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060202 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: 20060202 Ref country code: BG 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: 20060202 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: 20060202 |
|
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: 20060403 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2252515 Country of ref document: ES Kind code of ref document: T3 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20051102 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
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: 20060831 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |
|
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: 20060803 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
BERE | Be: lapsed |
Owner name: L'AIR LIQUIDE, S.A. POUR L'ETUDE ET L'EXPLOITATIO Effective date: 20060831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE 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: 20051102 |
|
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: 20051102 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20051102 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20170821 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20180921 Year of fee payment: 17 Ref country code: FR Payment date: 20180827 Year of fee payment: 17 Ref country code: IT Payment date: 20180823 Year of fee payment: 17 Ref country code: DE Payment date: 20180823 Year of fee payment: 17 |
|
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: 20180823 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60207095 Country of ref document: DE |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20200303 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190831 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20190823 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20210107 |
|
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: 20190824 |