EP0276585A1 - Apparatus for heating a bath, especially a galvanising bath - Google Patents
Apparatus for heating a bath, especially a galvanising bath Download PDFInfo
- Publication number
- EP0276585A1 EP0276585A1 EP87400210A EP87400210A EP0276585A1 EP 0276585 A1 EP0276585 A1 EP 0276585A1 EP 87400210 A EP87400210 A EP 87400210A EP 87400210 A EP87400210 A EP 87400210A EP 0276585 A1 EP0276585 A1 EP 0276585A1
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- EP
- European Patent Office
- Prior art keywords
- bath
- heating
- cover
- channel
- channels
- 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.)
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- 238000005246 galvanizing Methods 0.000 title claims description 12
- 238000005485 electric heating Methods 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 17
- 239000000567 combustion gas Substances 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/02—Tanks; Installations therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/02—Heating or cooling
Definitions
- the present invention relates to a device for heating a bath, in particular a galvanizing bath.
- Another way to heat the bath is to immerse refractory heating elements, in the form of pots, inside which are gas burners or electric heating elements.
- the improvement in efficiency provided by this solution is especially advantageous in the case of electric heating. Indeed, in the case of gas burners, the circulation of hot gases in the pots causes relatively large losses reducing the efficiency of heating by direct contact with the bath.
- these heating devices using heating pots immersed in the bath have the significant disadvantage of constituting a bulky means, which is immersed in the bath. Indeed, the conductivity of the wall of refractory material of the pots bulky, which is immersed in the bath. Indeed, the conductivity of the wall of refractory material of the pots limits the power that each pot can provide. Depending on the volume of the bath, its nature and the temperature, it is necessary to multiply the pots. This clogs the bath and hinders the installation of various devices.
- the aim of the present invention is to remedy these drawbacks and proposes to create a means of heating a bath and in particular a galvanizing bath, which allows very efficient heating with high efficiency, a simple implementation, very flexible operation and leaving the bath accessible from all sides.
- the invention relates to a heating device, characterized in that it consists of a cover, the lower face of which, intended to come onto the surface of the bath, comprises at least one open channel in the direction of the bath, and a heating means opening into the channel for heating the surface of the bath.
- This heating device is placed on the bath and floats on its surface.
- the bath thus delimits the cover channel to create a volume for direct heating of the bath partly by conduction and partly by radiation.
- the heating means is an electric heating means placed in the channel.
- the atmosphere of the channel remains the same since there is no gas (air) circulation in the channel, except the circulation currents resulting from convection.
- the heating means is a burner opening at the entrance to the channel.
- a gas circulation is established in the channel. This gas circulation is in contact with the surface of the bath and ensures, at least in part, its heating, the complementary part of the heating being provided by the radiation from the walls of the channel.
- the fumes are recovered by an evacuation pipe smoke connected to the channel outlet.
- This second solution makes it possible, by adjusting the oxidizing mixture, to have a reducing atmosphere on the surface of the bath, which is advantageous in particular in the case of a galvanizing bath.
- the cover has only one channel having a meandering path occupying almost the entire surface of the cover.
- the cover and the partitions of the cover which delimit the channel or channels are generally made of refractory materials.
- This cover is advantageously provided on the outside with an insulating layer preventing heat loss.
- This cover thus generally has the double advantage of ensuring direct heating of the bath by contact between the heating means or the hot air and the surface of the bath.
- This cover also has the advantage of isolating a large part of the surface of the bath and of avoiding heat losses.
- the cover is at least partially double-walled to create a path for the circulation of the air supplying the burner. This preheats the combustion gases.
- the dimensioning of the cover, its surface or the splitting of the cover into several separate elements or the multiplication of the covers on the surface of the bath depend on the working conditions.
- the covers floating on the surface of the bath do not require any support means and the only space they create is that of the supply of the heating means and, if necessary, the connection of the smoke evacuation.
- these means can arrive vertically to the right of the cover.
- access to the bath is free over the entire perimeter of the crucible, which constitutes a non-negligible advantage.
- the atom sphere in the heating chamber of the cover being reducing, this prevents oxidation of the galvanizing bath (zinc) and the formation of floating layers on the surface of the bath, as exists in the case of vaults. There is therefore no insulating layer between the bath itself and the heating cover. In this way, the surface of the bath allows an excellent heat exchange between the heating means and the bath.
- the device for heating a bath consists of a cover 2 provided with peripheral walls 3 and intermediate partitions 4, not continuous from one end to the other of the cover to form a channel 5, going from the inlet 6 at the outlet 7 of the cover.
- This channel 5 receives a heating means either electric or gas.
- the electric heating means consists of a set of resistors distributed in the channel 5. As in this case, there is no circulation of smoke or combustion gases, the inlet 6 and the outlet 7 are closed. In the case of a gas burner 8, there is gas circulation in the direction of the arrows 9, between the inlet 6 and the smoke outlet 7.
- channel 5 has a meandering path for the circulation of gases.
- the adjustment of the fuel mixture feeding the burner 8 makes it possible to establish in the channel 5 which forms a heating chamber, an advantageous reducing atmosphere in the case of the use of this heating device for a galvanizing bath (Zn). This in fact prevents the oxidation of the bath and the formation of an insulating crust on the surface 1 of the bath.
- Pipes 10 are also provided in the thickness of the cover. These pipes are used for supplying fuel or combustion air and allow the preheating of this combustion air, in particular at the level of part 51 of channel 5, the part into which the burner 8 opens and which is the hottest.
- the cover is also provided with an outer, insulating, thermal layer 11.
- the heating chamber or channel 5 is constituted only by a single channel, the heating chamber can be constituted by several parallel channels with circulation of the combustion gases in the same direction or counter-direction.
- the partitions 4 can go from one end to the other of the cover and delimit parts 51, 52, 53, 54 separated from each other.
- the temperature of the gases leaving through the evacuation duct connected to the outlet 7 is equal to the temperature of the bath. It is possible to exhaust these gases and lower their temperature (which in some cases can be of the order of 400 °), using a heating coil (not shown) provided around the outlet 7 and serving the preheating of combustion gases.
- combustion gases can also be used to heat other parts of the installation.
- the cover is preferably made of a refractory material which cannot be attacked by the bath, in particular zinc in the case of a galvanizing bath, which has a high insulating and reflecting power and which is of low density or d '' a density compatible with the density of the bath to ensure floating.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
La présente invention concerne un dispositif de chauffage d'un bain, notamment d'un bain de galvanisation.The present invention relates to a device for heating a bath, in particular a galvanizing bath.
Le chauffage de bains de traitement tels que des bains de galvanisation, se fait actuellement par chauffage du creuset, ce qui constitue une solution assez délicate. Une autre façon de chauffer un bain de galvanisation consiste à surmonter le bain d'une voûte maçonnée, chauffée, et qui par rayonnement chauffe le bain et le maintient à la température appropriée. Bien que cette façon de procéder soit plus intéressante que la précédente, elle ne présente qu'un rendement également relativement faible et limite l'accessibilité au bain.The heating of treatment baths such as galvanizing baths is currently done by heating the crucible, which constitutes a fairly delicate solution. Another way of heating a galvanizing bath consists in overcoming the bath with a masonry vault, heated, and which by radiation heats the bath and maintains it at the appropriate temperature. Although this procedure is more interesting than the previous one, it also has a relatively low yield and limits accessibility to the bath.
Une autre manière de chauffer le bain consiste à y immerger des éléments chauffants en matière réfractaire, en forme de pots, à l'intérieur desquels se trouvent des brûleurs à gaz ou des éléments chauffants électriques. L'amélioration du rendement apportée par cette solution est surtout intéressante dans le cas du chauffage électrique. En effet, dans le cas des brûleurs à gas, la circulation des gaz chauds dans les pots entraîne des pertes relativement importantes réduisant l'efficacité du chauffage par contact direct avec le bain.Another way to heat the bath is to immerse refractory heating elements, in the form of pots, inside which are gas burners or electric heating elements. The improvement in efficiency provided by this solution is especially advantageous in the case of electric heating. Indeed, in the case of gas burners, the circulation of hot gases in the pots causes relatively large losses reducing the efficiency of heating by direct contact with the bath.
De plus, ces dispositifs de chauffage à l'aide de pots de chauffage immergés dans le bain, présentent l'inconvénient non négligeable de constituer un moyen encombrant, qui est immergé dans le bain. En effet, la conductivité de la paroi de matière réfractaire des pots encombrant, qui est immergé dans le bain. En effet, la conductivité de la paroi de matière réfractaire des pots limite la puissance que peut fournir chaque pot. Suivant le volume du bain, sa nature et la température, il faut multiplier les pots. Cela encombre le bain et gêne la mise en place de divers dispositifs.In addition, these heating devices using heating pots immersed in the bath, have the significant disadvantage of constituting a bulky means, which is immersed in the bath. Indeed, the conductivity of the wall of refractory material of the pots bulky, which is immersed in the bath. Indeed, the conductivity of the wall of refractory material of the pots limits the power that each pot can provide. Depending on the volume of the bath, its nature and the temperature, it is necessary to multiply the pots. This clogs the bath and hinders the installation of various devices.
La présente invention a pour but de remédier à ces inconvénients et se propose de créer un moyen de chauffage d'un bain et notamment d'un bain de galvanisation, qui permette un chauffage très efficace avec un rendement élevé, une mise en oeuvre simple, un fonctionnement très souple et laissant le bain accessible de tous ses côtés.The aim of the present invention is to remedy these drawbacks and proposes to create a means of heating a bath and in particular a galvanizing bath, which allows very efficient heating with high efficiency, a simple implementation, very flexible operation and leaving the bath accessible from all sides.
A cet effect, l'invention concerne un dispositif de chauffage, caractérisé en ce qu'il se compose d'un couvercle dont la face inférieure, destinée à venir sur la surface du bain, comporte au moins un canal ouvert en direction du bain, et d'un moyen de chauffage débouchant dans le canal pour chauffer la surface du bain.To this end, the invention relates to a heating device, characterized in that it consists of a cover, the lower face of which, intended to come onto the surface of the bath, comprises at least one open channel in the direction of the bath, and a heating means opening into the channel for heating the surface of the bath.
Ce dispositif de chauffage est placé sur le bain et flotte à sa surface. Le bain délimite ainsi le canal de couvercle pour créer un volume de chauffage direct du bain en partie par conduction et en partie par rayonnement. De façon avantageuse, le moyen de chauffage est un moyen de chauffage électrique placé dans le canal. Dans ce cas, l'atmosphère du canal reste la même puisqu'il n'y a pas de circulation de gaz (air) dans le canal, sauf les courants de circulation résultant de la convection.This heating device is placed on the bath and floats on its surface. The bath thus delimits the cover channel to create a volume for direct heating of the bath partly by conduction and partly by radiation. Advantageously, the heating means is an electric heating means placed in the channel. In this case, the atmosphere of the channel remains the same since there is no gas (air) circulation in the channel, except the circulation currents resulting from convection.
Il est également intéressant que le moyen de chauffage soit un brûleur débouchant à l'entrée du canal. Dans ce cas, il s'établit une circulation de gaz dans le canal. Cette circulation de gaz est en contact avec la surface du bain et en assure, du moins en partie, son chauffage, la partie complémentaire du chauffage étant fournie par le rayonnement des parois du canal. En sortie, les fumées sont récupérées par une conduite d'évacuation de fumées branchée sur la sortie du canal.It is also interesting that the heating means is a burner opening at the entrance to the channel. In this case, a gas circulation is established in the channel. This gas circulation is in contact with the surface of the bath and ensures, at least in part, its heating, the complementary part of the heating being provided by the radiation from the walls of the channel. At the outlet, the fumes are recovered by an evacuation pipe smoke connected to the channel outlet.
Cette seconde solution permet, par le réglage du mélange comburant, d'avoir une atmosphère réductrice à la surface du bain, ce qui est intéressant notamment dans le cas d'un bain de galvanisation.This second solution makes it possible, by adjusting the oxidizing mixture, to have a reducing atmosphere on the surface of the bath, which is advantageous in particular in the case of a galvanizing bath.
De façon particulièrement avantageuse, le couvercle ne comporte qu'un seul canal ayant un tracé en méandres occupant la quasi-totalité de la surface du couvercle. Il est toutefois également possible de réaliser plusieurs canaux dans le couvercle avec un ou plusieurs moyens de chauffage par canal. Notamment, dans le cas de brûleurs à gaz, il peut être intéressant d'alimenter séparément chacun des canaux du couvercle et de situer les points des brûleurs à gaz en des endroits éloignés du couvercle de façon que la circulation des gaz chauds dans les canaux se fasse en quelque sorte à contre-courant, homogénéisant la température des gaz dans les canaux et, par suite, la température du bain. Toutefois, il est à remarquer que dans le cas, notamment, d'un bain de galvanisation, l'échange de chaleur se fait de façon excellente par ce contact direct et la nature même du bain évite les différences de température à l'intérieur du bain car les courants de convexion et la conduction du bain assurent l'homogénéisation de la température du bain.Particularly advantageously, the cover has only one channel having a meandering path occupying almost the entire surface of the cover. However, it is also possible to produce several channels in the cover with one or more heating means per channel. In particular, in the case of gas burners, it may be advantageous to supply each of the channels of the cover separately and to locate the points of the gas burners at places remote from the cover so that the circulation of hot gases in the channels is in a way against the current, homogenizing the temperature of the gases in the channels and, consequently, the temperature of the bath. However, it should be noted that in the case, in particular, of a galvanizing bath, the heat exchange takes place in an excellent manner by this direct contact and the very nature of the bath avoids temperature differences inside the bath because the convection currents and the conduction of the bath ensure the homogenization of the bath temperature.
De façon particulièrement avantageuse, le couvercle et les cloisons du couvercle qui délimitent le ou les canaux, sont réalisés en général en matières réfractaires. Ce couvercle est avantageusement muni à l'extérieur d'une couche d'isolation évitant les déperditions de chaleur. Ce couvercle a ainsi, de façon générale, le double avantage d'assurer le chauffage direct du bain par contact entre le moyen de chauffage ou l'air chaud et la surface du bain. Ce couvercle a également l'avantage d'isoler une partie importante de la surface du bain et d'éviter les déperditions thermiques.In a particularly advantageous manner, the cover and the partitions of the cover which delimit the channel or channels, are generally made of refractory materials. This cover is advantageously provided on the outside with an insulating layer preventing heat loss. This cover thus generally has the double advantage of ensuring direct heating of the bath by contact between the heating means or the hot air and the surface of the bath. This cover also has the advantage of isolating a large part of the surface of the bath and of avoiding heat losses.
Suivant une autre caractéristique, le couvercle est au moins partiellement à double paroi pour créer un chemin de circulation de l'air alimentant le brûleur. Cela permet de préchauffer les gaz de combustion.According to another characteristic, the cover is at least partially double-walled to create a path for the circulation of the air supplying the burner. This preheats the combustion gases.
Le dimensionnement du couvercle, sa surface ou le fractionnement du couvercle en plusieure éléments distincts ou la multiplication des couvercles à la surface du bain, dépendent des conditions de travail. Il est toutefois à remarquer que les couvercles flottant à la surface du bain ne nécessitent pas de moyen de support et le seul encombrement qu'ils créent est celui de l'alimentation du moyen de chauffage et, le cas échéant, le branchement de l'évacuation des fumées. Toutefois, ces moyens peuvent arriver verticalement au droit du couvercle. Ainsi, l'accès au bain est libre sur tout le périmètre du creuset, ce qui constitue un avantage non négligeable.The dimensioning of the cover, its surface or the splitting of the cover into several separate elements or the multiplication of the covers on the surface of the bath, depend on the working conditions. However, it should be noted that the covers floating on the surface of the bath do not require any support means and the only space they create is that of the supply of the heating means and, if necessary, the connection of the smoke evacuation. However, these means can arrive vertically to the right of the cover. Thus, access to the bath is free over the entire perimeter of the crucible, which constitutes a non-negligible advantage.
De plus, comme indiqué ci-dessus, l'atomsphère dans la chambre de chauffage du couvercle étant réductrice, cela évite l'oxydation du bain de galvanisation (zinc) et la formation de couches flottant à la surface du bain, comme cela existe dans le cas des voutes . Il n'y a donc pas de couche isolante entre le bain proprement dit et le couvercle de chauffage. De cette façon, la surface du bain permet un excellent échange thermique entre le moyen de chauffage et le bain.In addition, as indicated above, the atom sphere in the heating chamber of the cover being reducing, this prevents oxidation of the galvanizing bath (zinc) and the formation of floating layers on the surface of the bath, as exists in the case of vaults. There is therefore no insulating layer between the bath itself and the heating cover. In this way, the surface of the bath allows an excellent heat exchange between the heating means and the bath.
La présente invention sera décrite de façon plus détaillée à l'aide des dessins annexés dans lesquels :
- - la figure 1 est une vue en coupe verticale d'un dispositif de chauffage selon l'invention,
- - la figure 2 est une vue en coupe transversale selon II-II de la figure 1,
- - la figure 3 est une vue en coupe horizontale du dispositif de la figure 1 selon la ligne III-III.
- FIG. 1 is a view in vertical section of a heating device according to the invention,
- FIG. 2 is a cross-sectional view along II-II of FIG. 1,
- - Figure 3 is a horizontal sectional view of the device of Figure 1 along line III-III.
Selon les figures 1 à 3, le dispositif de chauffage d'un bain dont seul le niveau 1 a été représenté, par exemple d'un bain de galvanisation, se compose d'un couvercle 2 muni de parois périphériques 3 et de cloisons intermédiaires 4, non continues d'une extrémité à l'autre du couvercle pour former un canal 5, allant de l'entrée 6 à la sortie 7 du couvercle. Ce canal 5 reçoit un moyen de chauffage soit électrique, soit à gaz. Le moyen de chauffage électrique est constitué par un ensemble de résistances réparties dans le canal 5. Comme dans ce cas, il n'y a pas de circulation de fumée ou de gaz de combustion, l'entrée 6 et la sortie 7 sont fermées. Dans le cas d'un brûleur à gaz 8, il y a circulation des gaz dans le sens des flèches 9, entre l'entrée 6 et la sortie de fumée 7.According to FIGS. 1 to 3, the device for heating a bath, of which only level 1 has been shown, for example a galvanizing bath, consists of a
Comme le montre la figure 3, le canal 5 a un tracé en méandres pour la circulation des gaz.As shown in Figure 3,
Le réglage du mélange combustible alimentant le brûleur 8 permet d'établir dans le canal 5 qui forme une chambre de chauffe, une atmosphère réductrice intéressante dans le cas de l'utilisation de ce dispositif de chauffage pour un bain de galvanisation (Zn). Cela évite en effet l'oxydation du bain et la formation d'une croute isolante à la surface 1 du bain.The adjustment of the fuel mixture feeding the burner 8 makes it possible to establish in the
Il est également prévu des conduites 10, dans l'épaisseur du couvercle. Ces conduites servent à l'alimentation en combustible ou en air comburant et permettent le préchauffage de cet air comburant, notamment au droit de la partie 51 du canal 5, partie dans laquelle débouche le brûleur 8 et qui est la plus chaude.
Le couvercle est également muni d'une couche extérieure 11, isolante, thermique.The cover is also provided with an outer, insulating, thermal layer 11.
Bien que dans l'exemple représenté aux figures 1 à 3 la chambre de chauffe ou canal 5 ne soit constituée que par un seul canal, la chambre de chauffe peut être constituée par plusieurs canaux, parallèles, avec circulation des gaz de combustion dans la même direction ou à contre-sens.Although in the example shown in Figures 1 to 3 the heating chamber or
Il est également à remarquer que dans le cas où le couvercle est équipé d'un moyen de chauffage électrique, les cloisons 4 peuvent aller d'une extrémité à l'autre du couvercle et délimiter des parties 51, 52, 53, 54 séparées les unes des autres.It should also be noted that in the case where the cover is equipped with an electric heating means, the partitions 4 can go from one end to the other of the cover and delimit
Bien que dans le cas général, on réalise un seul dispositif de chauffage, il peut également être intéressant de subdiviser ce dispositif de chauffage en plusieurs parties toutes analogues à celles décrites ci-dessus. Il est également à remarquer que, du fait du contact entre les gaz et la surface du bain, la température des gaz sortant par le conduit d'évacuation branché sur la sortie 7 est égale à la température du bain. Il est possible d'épuiser ces gaz et d'abaisser leur température (qui dans certains cas peut être de l'ordre de 400°), à l'aide d'un serpentin de chauffage non représenté prévu autour de la sortie 7 et servant au préchaffage des gaz de combustion.Although in the general case, a single heating device is produced, it may also be advantageous to subdivide this heating device into several parts all similar to those described above. It should also be noted that, due to the contact between the gases and the surface of the bath, the temperature of the gases leaving through the evacuation duct connected to the outlet 7 is equal to the temperature of the bath. It is possible to exhaust these gases and lower their temperature (which in some cases can be of the order of 400 °), using a heating coil (not shown) provided around the outlet 7 and serving the preheating of combustion gases.
Enfin, suivant les applications, les gaz de combustion peuvent également servir au chauffage d'autres parties de l'installation.Finally, depending on the applications, the combustion gases can also be used to heat other parts of the installation.
Le couvercle est de préférence réalisé en une matière réfractaire qui ne soit pas attaquable par le bain, notamment le zinc dans le cas d'un bain de galvanisation, qui présente un pouvoir isolant et réfléchissant important et qui soit d'une faible densité ou d'une densité compatible avec la densité du bain pour assurer le flottement.The cover is preferably made of a refractory material which cannot be attacked by the bath, in particular zinc in the case of a galvanizing bath, which has a high insulating and reflecting power and which is of low density or d '' a density compatible with the density of the bath to ensure floating.
Claims (6)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8511893A FR2585728B1 (en) | 1985-08-02 | 1985-08-02 | DEVICE FOR HEATING A BATH, ESPECIALLY A GALVANIZATION BATH |
| ES87400210T ES2023201B3 (en) | 1987-01-30 | 1987-01-30 | DEVICE FOR HEATING A BATH, ESPECIALLY A GALVANIZATION BATH |
| EP87400210A EP0276585B1 (en) | 1987-01-30 | 1987-01-30 | Apparatus for heating a bath, especially a galvanising bath |
| AT87400210T ATE63143T1 (en) | 1987-01-30 | 1987-01-30 | DEVICE FOR HEATING A BATH, ESPECIALLY A GALVANIZING BATH. |
| DE8787400210T DE3769784D1 (en) | 1987-01-30 | 1987-01-30 | DEVICE FOR HEATING A BATH, IN PARTICULAR A GALVANIZING BATH. |
| GR91401115T GR3002427T3 (en) | 1987-01-30 | 1991-08-02 | Apparatus for heating a bath, especially a galvanising bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP87400210A EP0276585B1 (en) | 1987-01-30 | 1987-01-30 | Apparatus for heating a bath, especially a galvanising bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0276585A1 true EP0276585A1 (en) | 1988-08-03 |
| EP0276585B1 EP0276585B1 (en) | 1991-05-02 |
Family
ID=8198184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87400210A Expired - Lifetime EP0276585B1 (en) | 1985-08-02 | 1987-01-30 | Apparatus for heating a bath, especially a galvanising bath |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0276585B1 (en) |
| AT (1) | ATE63143T1 (en) |
| DE (1) | DE3769784D1 (en) |
| ES (1) | ES2023201B3 (en) |
| GR (1) | GR3002427T3 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE518792A (en) * | ||||
| FR811784A (en) * | 1936-10-09 | 1937-04-22 | Viellard Migeon Et Cie | Galvanizing oven |
| GB613196A (en) * | 1943-11-06 | 1948-11-23 | Ove Falck Holm | Apparatus for coating metal wires or tapes with a different metal from a molten pool |
| DE1000205B (en) * | 1955-11-17 | 1957-01-03 | Gewerkschaft Kraft | Wire galvanizing furnace |
| DE1109001B (en) * | 1958-04-24 | 1961-06-15 | Walter Koerner K G Ind Ofen Un | Surface-heated galvanizing furnace |
| FR1358951A (en) * | 1963-06-12 | 1964-04-17 | Heated cover for metal baths to be heated from above, in particular for galvanizing and aluminizing furnaces | |
| DE1189101B (en) * | 1963-06-21 | 1965-03-18 | Alfred Keller Dr Ing | Device for the heat treatment of iron and steel wires, tapes and other elongated objects |
| DE1191199B (en) * | 1962-07-14 | 1965-04-15 | Walter Koerner K G Ind Ofen Un | Surface-heated galvanizing furnace with ceramic tub and an airtight arranged over this cover designed as a furnace |
| DE2215671A1 (en) * | 1972-03-30 | 1973-10-04 | Koerner Kg Walter | Surface heating hot dip galvanising furnace - with felt lined cover |
| FR2585728A1 (en) * | 1985-08-02 | 1987-02-06 | Bretsurf Ste Civile | Device for heating a bath, especially a galvanising bath |
-
1987
- 1987-01-30 ES ES87400210T patent/ES2023201B3/en not_active Expired - Lifetime
- 1987-01-30 AT AT87400210T patent/ATE63143T1/en not_active IP Right Cessation
- 1987-01-30 DE DE8787400210T patent/DE3769784D1/en not_active Expired - Lifetime
- 1987-01-30 EP EP87400210A patent/EP0276585B1/en not_active Expired - Lifetime
-
1991
- 1991-08-02 GR GR91401115T patent/GR3002427T3/en unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE518792A (en) * | ||||
| FR811784A (en) * | 1936-10-09 | 1937-04-22 | Viellard Migeon Et Cie | Galvanizing oven |
| GB613196A (en) * | 1943-11-06 | 1948-11-23 | Ove Falck Holm | Apparatus for coating metal wires or tapes with a different metal from a molten pool |
| DE1000205B (en) * | 1955-11-17 | 1957-01-03 | Gewerkschaft Kraft | Wire galvanizing furnace |
| DE1109001B (en) * | 1958-04-24 | 1961-06-15 | Walter Koerner K G Ind Ofen Un | Surface-heated galvanizing furnace |
| DE1191199B (en) * | 1962-07-14 | 1965-04-15 | Walter Koerner K G Ind Ofen Un | Surface-heated galvanizing furnace with ceramic tub and an airtight arranged over this cover designed as a furnace |
| FR1358951A (en) * | 1963-06-12 | 1964-04-17 | Heated cover for metal baths to be heated from above, in particular for galvanizing and aluminizing furnaces | |
| DE1189101B (en) * | 1963-06-21 | 1965-03-18 | Alfred Keller Dr Ing | Device for the heat treatment of iron and steel wires, tapes and other elongated objects |
| DE2215671A1 (en) * | 1972-03-30 | 1973-10-04 | Koerner Kg Walter | Surface heating hot dip galvanising furnace - with felt lined cover |
| FR2585728A1 (en) * | 1985-08-02 | 1987-02-06 | Bretsurf Ste Civile | Device for heating a bath, especially a galvanising bath |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0276585B1 (en) | 1991-05-02 |
| ES2023201B3 (en) | 1992-01-01 |
| DE3769784D1 (en) | 1991-06-06 |
| ATE63143T1 (en) | 1991-05-15 |
| GR3002427T3 (en) | 1992-12-30 |
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