EP1093560B1 - Ringkammerofen mit tubularer zentralgasströmung - Google Patents

Ringkammerofen mit tubularer zentralgasströmung Download PDF

Info

Publication number
EP1093560B1
EP1093560B1 EP99925058A EP99925058A EP1093560B1 EP 1093560 B1 EP1093560 B1 EP 1093560B1 EP 99925058 A EP99925058 A EP 99925058A EP 99925058 A EP99925058 A EP 99925058A EP 1093560 B1 EP1093560 B1 EP 1093560B1
Authority
EP
European Patent Office
Prior art keywords
section
gas flow
cross
flow
wall
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
Application number
EP99925058A
Other languages
English (en)
French (fr)
Other versions
EP1093560A1 (de
Inventor
Jean-Christophe Rotger
Christian Dreyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Publication of EP1093560A1 publication Critical patent/EP1093560A1/de
Application granted granted Critical
Publication of EP1093560B1 publication Critical patent/EP1093560B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • F27B13/06—Details, accessories or equipment specially adapted for furnaces of this type
    • 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 revolving furnace chambers used for cooking blocks carbonaceous, and more particularly open type furnaces.
  • Open type rotating chamber furnaces are well known in themselves and described in particular in patent applications FR 2 600 152 (corresponding to the patent US 4,859,175) and WO 91/19147.
  • a gas flow consisting air and / or combustion gases circulate in the succession of active chambers in the long direction of the oven, in a succession of hollow heating partitions which communicate with each other from one room to another, each room being made up of the juxtaposition in the cross direction of the oven, alternately, of these heating partitions and cells in which the carbon blocks to be cooked are stacked.
  • This gas flow is blown upstream of the active chambers and is sucked downstream of these chambers.
  • a hollow room partition typically takes the form of a rectangular parallelepiped 5 m long (long direction of the oven), 5 m high and 0.5 m wide (across the furnace) or 0.3 m of gas stream and twice 0.1 m wall), subdivided into 4 vertical "wells" thanks to 3 vertical baffles arranged in the cross direction, each well being bounded either by two baffles, or by a baffle and a of the walls of the room, so as to increase the average air path of cooling or combustion gases in said partition and, in addition, to ensure a constant spacing between the longitudinal walls of the partition.
  • spacers are also arranged in the cross direction, in particular between said baffles, to ensure constant spacing between the walls longitudinal of the partition.
  • a constant concern of the manufacturer of baked carbon blocks is - quality constant - to decrease the production costs of these cooked carbon blocks and the costs investment and / or maintenance of the ovens used to manufacture them, particularly in increasing the service life of the refractory elements of the ovens.
  • Another concern is to improve the quality of these cooked carbon blocks, by particular to improve consistency of quality and consistency of performance within from the same carbon block and from one block to another.
  • the applicant has had the idea of modeling the circulation of gaseous fluids in existing oven partitions, knowing the dimensions and locations of the baffles and spacers.
  • the modeling also highlighted the significant pressure drop in the flow gas due to the presence of baffles, which has the double consequence on the one hand increase the energy required to circulate the gas flow in the succession of partitions, and on the other hand to increase the corresponding overpressure or depression in said partitions, which leads to an increase in thermal leaks in a one way or the other (from said partition to the outside or from the outside to said partition), and therefore the energy consumed.
  • the rotary fire oven with open type chambers for cooking carbonaceous blocks comprises, in the long direction X of the furnace, a succession of chambers separated by transverse walls with openings, each of the bedrooms comprising, in the transverse direction Y of the furnace, an alternation of hollow partitions ensuring the circulation of a gaseous flow for heating combustion gases or a gaseous flow cooling air, and cells containing the carbonaceous blocks to be cooked, each said hollow partitions of a chamber being in communication with a partition of a upstream chamber and / or a partition of a downstream chamber, so as to form a duct ensuring the circulation of said gas flow, from upstream to downstream, in the long direction X on all of the simultaneously active chambers for said rotating light, each of said partitions of a chamber comprising, in the X-Z plane, two side walls vertical, and, in the cross direction Y, elements ensuring the deflection of said gas flow traversing said partition and maintaining a constant spacing of said side walls, and is characterized in that each
  • the invention is distinguished by the elimination of vertical baffles, generally three in number per hollow partition.
  • the average path of the gas flow can be broken down into a component in the longitudinal direction X, over a length L, and in a component in the vertical direction Z, over a length 4xC, ie in total L + 4xC.
  • C and M are typically between 0.6xH and 0.8xH.
  • the gas flow is a tubular flow which changes direction 8 times (X / Z-X / Z-X / Z-X / X), each baffle bringing a change of direction in the vertical direction Z and in the longitudinal direction X noted "Z-X", alternating the longitudinal directions (X) and the vertical directions (Z), the entire gas flow being concentrated, at each passage of baffle, on a straight section S corresponding to a height of 0.2xH-0.4xH, i.e. 20 to 40% of the total section S.
  • the average gas flow follows an average trajectory which is, in first approximation and taking into account the absence of vertical baffle, the arithmetic mean of the shortest trajectory, that of length L, and of the longest trajectory, either that of length equal to L + 2xM, i.e. 1 ⁇ 2 (L + L + 2xM) or L + M, to compare to the trajectory of the state of the art L + 4xC, with C close to M.
  • the gas flow of flow rate D is distributed homogeneously over the entire section straight line S of said partition in the plane Y-Z, with a level of homogeneity of said distribution of the flow rate D equal to 0.50.D - 0.125.D /0.25.S, said level of homogeneity being noted "2y.D - 0.5y.D / y.S", “2y.D - 0.5y.D” being the range of the fraction of flow D corresponding to a fraction y, with y at most equal to 0.25, of said cross section S, which is equal to the product of the height "H" by the constant width "1" of the partitions hollow.
  • Modeling of gas flows is carried out from a decomposition of the flow total gaseous in a number N of elementary gaseous threads - for example a fifty nets as illustrated in Figures 3 and 4, and it leads to a visualization of the trajectories of each of these nets in the X-Z plane, and therefore at the distribution of elementary gaseous nets, in the same way of spacing between contour lines on a map From there, it is easy to calculate the level of real homogeneity on any fraction "y" of the height H by counting the number "n" of elementary nets to obtain the n / N fraction corresponding to the height fraction "y” which was set to 0.25.
  • the overall level of homogeneity is therefore expressed in fact by the portion of the surface of hollow wall, in the X-Z plane - or of corresponding volume - where the level homogeneity reaches at least a given threshold set at 0.5.D - 0.125.D / 0.25.S.
  • the means according to the invention make it possible to solve the problem posed. Indeed, from the invention ensures a better distribution of the gas flow, and therefore a greater temperature uniformity, while reducing the pressure drop, which leads in definitive both to a more homogeneous production, to a reduction in operation of the ovens and an increase in the life of the ovens.
  • Figures 1, la, 2, 3 and 3a correspond to the ovens according to the state of the art.
  • the Figures 4. 4a, 5. 6 6a, 7a to 7d and 8 correspond to the ovens according to the invention.
  • Figure 1 is a schematic view, in section along the plane X-Z, X being the direction longitudinal and Z the vertical direction, of the portion of the rotary fire oven (1), active simultaneously on 10 rooms (2), each room being separated from the next by a transverse wall (32) provided with an opening (320) ensuring the circulation of the gas flow flow rate D upstream (on the right in the figure), where air is injected thanks to a ramp blowing (231) provided with as many pipes (230) as there are hollow partitions (3) longitudinal provided with baffles (31) (three baffles per hollow partition and per chamber), downstream (on the left in the figure) where the gas flow is sucked in by means of a ramp (211) with as many suction pipes (210) as there are hollow partitions longitudinal.
  • Burners (220) positioned substantially in the middle of the series of 10 chambers. bring the upstream gas flow to the desired temperature level, typically of the order 1100 ° C.
  • the chambers located upstream of the burners are cooling of the carbon blocks, while the chambers downstream of the burners are carbon block cooking chambers.
  • a gas flow (233) can exit the oven upstream of the burners, and a gaseous flow of air (213) can enter the oven downstream of the burners.
  • the gas flow of flow D flowing in said hollow partitions is not a constant flow flow, taking into account both these gas flow (213, 233), and taking into account the formation of combustible volatile products during the cooking of the carbon blocks in the chambers in the downstream part of the oven.
  • the gas flow is an air flow (34) upstream of the burners (220), and is a gas flow of combustion (35) mixed with an incident air flow (213) in the downstream part of the furnace.
  • FIG. 1a represents the pressure curve of said gas flow of flow rate D, inside said hollow partitions (3).
  • the pressure decreases regularly from upstream to downstream it is higher than atmospheric pressure and maximum at the blowing of air through pipes (230), it is close to atmospheric pressure just upstream of burners (220), where a pressure sensor (234) is installed, it is lower than the atmospheric and minimum pressure at the intake of combustion gases by the suction pipes (210).
  • FIG. 2 shows a perspective view. partially exploded, from the upstream part of the series of active chambers, making it possible to observe, in the transverse direction Y, for the same chamber (2), the alternation of hollow heating partitions (3) and cells (4) containing the stack of carbon blocks (40).
  • Each hollow partition (3) is limited in the X-Z plane by two vertical walls (38), and contains three baffles (31), is provided with openings (30) into which the blowing pipes (230) can be inserted as shown in the figure, or suction (210), the burner injectors (220), or various means of measurement.
  • To the right of the openings (30) are the wells (38). that is to say the interior space of said partition without obstacle so as to be able introduce the aforementioned devices (blow pipes for example).
  • the bedrooms (2) successive, two of which are shown in the figure, are separated by a wall (32). provided, at the level of said hollow partitions (3), with openings (320) allowing the gas flow from upstream to downstream. in the X'-
  • FIG. 3 represents a map of the gas flow, obtained by simulation digital, broken down into fifty elementary threads (6), in a hollow partition according to the state of the art represented in FIG. 3a, provided with 3 baffles (31) and a certain number of spacers (33) maintaining a constant spacing between the walls (38) of said partition.
  • Figure 3a have been shown the length L and the height H of a partition hollow for a given room, the height C of a baffle, and the height M of the wall (32) at each end of the partition.
  • Figure 5 corresponding to a second embodiment of the invention, is a view partial schematic, in section in the X-Z plane, of the gas flow on a meme succession of hollow partitions of simultaneously active chambers for the same fire revolving, in case the rooms are not separated by a transverse wall
  • Le gas flow retains a substantially constant section S over all of its route, a distribution means (232) being used upstream of said rotating light, so as to inject, through transverse slots or openings (2320), a gas flow, in the form of ten flow fractions (7), having said level of homogeneity, a other distribution means (212) being used downstream of said rotating light, so as to sucking said gas flow through transverse slots or openings (2120) without altering said level of homogeneity. Only the gas flows in the hollow partitions at both ends have been shown.
  • the gas flow consists of a set of fractions flow (7), forming a tubular flow (50) substantially oriented along the longitudinal axis X'-X.
  • Figure 6 corresponds to Figure 1, after modification according to Figure 5, in particular removal of the transverse walls (32), and introduction of the distribution means (212, 232). Were not shown in this figure means for ensuring, at the level of burners (220), uniform heating of said gas flow.
  • Figure 6a similar to the FIG. 1a represents the static pressure curve of said gas flow, in an oven according to with the state of the art (curve I), and in an oven according to the invention (curve II & III), curve II corresponding to the case where the rooms are separated by walls transverse (32) having an orifice (320) for the passage of the gas flow, while the curve III corresponds to the case of FIGS. 5 and 6 where the gas flow conserves, from upstream to downstream, substantially the same section S.
  • Figures 7a to 7d illustrate, in section in the X-Z plane, spacers or elements ensuring the deflection of said gas stream, or of gas streams (6) which flow around said spacers (33a, 33b, 33c, 33d), some (33c and 33d) being of oblong shape with a major axis (330), to facilitate the flow of the gas flow and reduce its loss of charge.
  • FIG. 8 illustrates the case where, in order to further reduce the pressure drop, oblong elements (33c, 33d) are used and oriented, so that the orientation of the major axis (330) of said spacers coincides with the direction of flow gaseous, in particular in the case where said chambers are separated by walls (32) provided with orifices or openings (320) ensuring the passage of said gas flow from a room to another.
  • said oven (1) comprises chambers separated by a transverse wall (32) having openings of section So (320) ensuring the passage of said gas flow (34, 35) from a partition to the next partition, and in which each partition comprises, at its upstream part, a means for obtaining, from an initial flow of flow D of section So, a flow of section S> So having said level of homogeneity at least equal to 0.50.D - 0.125.D / 0.25.S.
  • said conduit (5) is not of constant section, its section worth So, at each transverse wall (32), and S >> So in each partition hollow itself.
  • Said means transforms. over a distance less than L / 2, L being the length of said partition, a gas flow with flow D and initial section So at the upstream inlet of said partition, in a flow of section S at least equal to 3.So, and having said level uniformity.
  • said distance is less than L / 3.
  • said medium is on the part marked "A”.
  • Each partition may include, in its upper part, one or more openers (30), which can be closed by a cover (36) and which give access to wells (37).
  • said means for obtaining said gas flow of flow rate D and of section S having said level of homogeneity consists of dividing elements, or spacers, (33) dividing, in a number of steps varying from 2 to 4, said initial flow of section So, as shown in Figures 4 and 4a, in a dozen flow fractions (7).
  • the initial flow So is thus divided into 11 flow fractions (7) over the entire section S.
  • said conduit (5) is of constant section, said walls (32) having openings (320) having substantially said section S, in the plane Y-Z, so as to form conduits (5) of substantially constant section S, from upstream to downstream, on all the partitions hollow (3) simultaneously active for said fire, wherein said level of homogeneity is obtained by a removable distribution means (232) introduced, upstream of said light rotating, at the upstream end of said conduit (5), so as to inject into each conduit (5) said gas flow with said level of homogeneity, in the form of ten flow fractions (7) - 8 fractions illustrated in Figure 5.
  • conduit (5) it may be advantageous, to maintain said level of homogeneity over the most long possible length of conduit (5) to use a removable distribution means (212) also downstream of said rotating light, at the downstream end of said duct (5) formed by the succession of hollow partitions (3) active for said fire, so as to draw said flow gaseous without disturbing upstream said level of homogeneity of said gas flow.
  • said distribution means (212. 232) can be an enclosure or a parallelepipedic distribution panel (232), of horizontal flat section, in the X-Y plane, chosen so that said enclosure can be introduced vertically into said well (37) of said partition (3) or between two chambers, and of vertical plane section in the plane Y-Z slightly lower than said section S of said partition in the plane Y-Z, having a face parallel to the Y-Z plane provided with openings (2320) with calculated geometry, either to inject said gas flow, in the form of flow fractions (7), with said level homogeneity upstream of said conduit (5), or to aspirate said gas flow downstream of said conduit (5).
  • said means for preserving a gas flow of flow D having said level of homogeneity on said section S comprises a plurality elements or spacers (33) fixed to said side walls (38) and distributed, in function of the results of the numerical simulation, in a substantially homogeneous the surface of said side walls (38) in the X-Z plane of said partition or said conduit, in sufficient number to ensure said constant spacing of said walls side (38), so as to divide said gas flow into a number of flow fractions (7) varying from 3 to 20 regularly distributed over the whole of said section S, and to be ensured for said fractions a flow with predetermined orientation, possibly according to said long direction X of the furnace, so as to have a substantially tubular flow (50) on all or part of the conduit (5) according to the method of the invention.
  • each fraction of flow (7) possibly group together several elementary nets (6) shown in solid line in FIG. 4.
  • said elements or braces (33) may be profiled so to reduce the pressure drop of said gas flow, while ensuring the other functions required to maintain a constant spacing between said side walls (38), and to obtain or maintain for said gas flow said predetermined level of homogeneity on said section S.
  • Figures 7a to 7d illustrate, in section in the XZ plane, different profiles of spacers or elements (33a, 33b, 33c, 33d), some (33c and 33d) being oblong in shape with a major axis (330), for facilitate the penetration of the gas flow and reduce its pressure drop.
  • the pressure drop P will a priori be in the following order: P 33a > P 33b > P 33c and P 33d .
  • FIG. 4a constitutes the plan of construction of the hollow partition (3), like a brick wall, the elements hatched extending transversely (direction Y-Y ') over the entire width (0.5 m) of said partition - width which comprises 0.3m of gas stream and 2 x 0.1m thickness of the hollow partition.
  • the oven according to the invention effectively solves the problem posed: whether the consistency of the quality of the carbon blocks, the energy consumption of the oven, or still the life of the furnace, on all these planes, the present invention provides a improvement to existing ovens according to the state of the art.
  • the energy consumption of the oven is significantly reduced at the same time thanks to a better temperature uniformity, which avoids unnecessary local overheating, and cause of a lower pressure drop (see Figure 6a).
  • the overall gain, both in terms of the energy consumption of the oven and the consumption of refractories, is at least 10%, which is considerable in this type industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Baking, Grill, Roasting (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (8)

  1. Ringkammerofen (1) mit offen ausgebildeten Kammern (2) zum Brennen von Kohlenstoffblöcken (40), mit in Längsrichtung X des Ofens aufeinanderfolgenden Kammern (2), die durch mit Öffnungen (320) versehene Quermauern (32) getrennt sind, wobei jede der Kammern in Querrichtung Y des Ofens abwechselnd Hohlkammern (3) für die Zirkulation eines erwärmenden Gasstroms (35) aus Verbrennungsgasen oder eines Gasstroms aus Kühlluft (34) und Zellen (4) mit den zu brennenden Kohlenstoffblöcken (40) aufweist, wobei jede der Hohlwände (3) einer Kammer (2) mit einer Wand einer oberhalb gelegenen Kammer und/oder einer Wand einer unterhalb gelegenen Kammer verbunden ist, so dass ein Kanal (5) gebildet wird, der die Zirkulation des Gasstroms (34, 35) von oben nach unten in Längsrichtung X über allen gleichzeitig aktiven Kammern für die Ringkammer sicherstellt, wobei jede der Wände einer Kammer in der XZ-Ebene zwei vertikale Seitenwände (38) und in Querrichtung Y Elemente aufweist, welche die Ablenkung des die Wand durchströmenden Gasstroms bewirken und die Seitenwände (38) in konstantem Abstand halten, dadurch gekennzeichnet, dass jede Hohlwand (3) ein Mittel aufweist, um zumindest auf einem Drittel der Länge L der Wand einen Gasstrom mit der Durchflussmenge D beizubehalten, der mit einer solchen Gleichmäßigkeit über den gesamten Querschnitt S der Hohlwand (3) in der YZ-Ebene verteilt ist, dass, gleich wie groß der Anteil y des betrachteten Querschnitts ist, die Durchflussmenge in diesem Querschnittsanteil y.S zwischen 2y.D und 0,5y.D liegt, wobei der Wert von y höchstens gleich 0,25 ist, wobei das Mittel eine Vielzahl von Elementen oder Abstandsstücken (33) aufweist, die an den Seitenwänden (38) befestigt und an der Oberfläche der Seitenwände (38) in der XZ-Ebene der Wand oder des Kanals gleichmäßig und in ausreichender Zahl verteilt sind, um den konstanten Abstand der Seitenwände (38) sicherzustellen, so dass der Gasstrom in eine zwischen 3 und 20 schwankende Zahl gleichmäßig über den gesamten Querschnitt S verteilter Teilströme zerteilt und für die Teilströme ein Fließen in eine vorbestimmte Richtung gesichert wird, eventuell in Längsrichtung X des Ofens.
  2. Ofen nach Anspruch 1 mit Kammern, die durch eine Querwand (32) getrennt sind, welche Querwand Öffnungen So (320) mit einem Querschnitt So aufweist, die die Überführung des Gasstroms (34, 35) von einer Wand zur nächsten Wand gewährleisten, und in welcher jede Wand an ihrem oberen Bereich ein Mittel aufweist, um aus einem Ausgangsstrom mit einer Durchflussmenge D und einem Querschnitt So einen Strom mit einem Querschnitt S > So zu gewinnen, der eine solche Gleichmäßigkeit besitzt, dass, gleich wie groß der Anteil y des betrachteten Querschnitts ist, die Durchflussmenge in diesem Querschnittsanteil y.S zwischen 2y.D und 0,5y.D liegt, wobei der Wert von y höchstens gleich 0,25 ist.
  3. Ofen nach Anspruch 2, bei dem das Mittel den Gasstrom mit der Durchflussmenge D und dem Ausgangsquerschnitt So am oberen Eintritt der Wand auf einer kleineren Strecke als die halbe Länge L/2 der Wand in einen Strom umwandelt, der einen Querschnitt S von mindestens 3.So hat und den genannten Gleichmäßigkeitsgrad aufweist.
  4. Ofen nach Anspruch 2, bei dem das Mittel zur Gewinnung des Gasstroms mit der Durchflussmenge D und dem Querschnitt S und dem genannten Gleichmäßigkeitsgrad aus Trennelementen oder Abstandsstücken besteht, die in Schritten, deren Zahl zwischen 2 und 4 schwankt, den Ausgangsstrom mit dem Querschnitt So zerteilen.
  5. Ofen nach Anspruch 1, bei dem der Kanal konstanten Querschnitts ist, wobei die Mauern (32) Öffnungen (320) aufweisen, die in der YZ-Ebene weitgehend den Querschnitt S haben, so dass durch die aufeinanderfolgenden, gleichzeitig aktiven Hohlwände (3) Kanäle (5) mit einem weitgehend konstanten Querschnitt S für die Ringkammer gebildet werden, in denen der genannte Gleichmäßigkeitsgrad durch ein herausziehbares Verteilungsmittel erzielt wird, das oberhalb der Ringkammer am oberen Ende des Kanals (5) eingeführt wird, so dass der Gasstrom mit dem genannten Gleichmäßigkeitsgrad in jeden Kanal (5) eingeblasen wird.
  6. Ofen nach Anspruch 5, bei dem der genannte Gleichmäßigkeitsgrad außerdem dadurch erzielt wird, dass das herausziehbare Verteilungsmittel unterhalb der Ringkammer am unteren Ende des durch die aktiven Hohlwände (3) gebildeten Kanals (5) für die Kammer eingeführt wird, so dass der Gasstrom abgesaugt wird, ohne den genannten Gleichmäßigkeitsgrad des Gasstroms im oberen Bereich zu beeinträchtigen.
  7. Ofen nach einem der Ansprüche 5 oder 6, bei dem das Verteilungsmittel eine parallelepipedförmige Verteilungssäule oder -platte (232) ist, mit einem flach ausgebildeten horizontalen Querschnitt in der XY-Ebene, der so gewählt ist, dass die Säule vertikal in den Schacht (37) der Wand (3) oder zwischen zwei Kammern eingeführt werden kann, und einem flach ausgebildeten vertikalen Querschnitt in der YZ-Ebene, der geringfügig kleiner ist als der Querschnitt S der Wand in der YZ-Ebene, und mit einer zur YZ-Ebene parallel verlaufenden Frontseite, welche mit Öffnungen (2320) berechneter Geometrie versehen ist, um den Gasstrom mit dem genannten Gleichmäßigkeitsgrad entweder oberhalb des Kanals (5) einzublasen oder den Gasstrom unterhalb des Kanals (5) abzusaugen.
  8. Ofen nach einem der Ansprüche 1 bis 4, bei dem die Elemente oder Abstandsstücke (33) so profiliert sind, dass der Druckverlust des Gasstroms bei gleichzeitiger Sicherung der weiteren notwendigen Funktionen zum Halten des konstanten Abstands zwischen den Seitenwänden (38) reduziert und für den Gasstrom der vorbestimmte Gleichmäßigkeitsgrad auf dem Querschnitt S erzielt oder beibehalten wird.
EP99925058A 1998-06-11 1999-06-08 Ringkammerofen mit tubularer zentralgasströmung Expired - Lifetime EP1093560B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9807536A FR2779811B1 (fr) 1998-06-11 1998-06-11 Four a feu tournant a flux central tubulaire
FR9807536 1998-06-11
PCT/FR1999/001339 WO1999064804A1 (fr) 1998-06-11 1999-06-08 Four a feu tournant a flux central tubulaire

Publications (2)

Publication Number Publication Date
EP1093560A1 EP1093560A1 (de) 2001-04-25
EP1093560B1 true EP1093560B1 (de) 2003-03-26

Family

ID=9527418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99925058A Expired - Lifetime EP1093560B1 (de) 1998-06-11 1999-06-08 Ringkammerofen mit tubularer zentralgasströmung

Country Status (17)

Country Link
US (1) US6027339A (de)
EP (1) EP1093560B1 (de)
CN (1) CN100445680C (de)
AR (1) AR018655A1 (de)
AU (1) AU745152C (de)
BR (1) BR9911134A (de)
CA (1) CA2334994C (de)
DE (1) DE69906296T2 (de)
EG (1) EG21714A (de)
ES (1) ES2191433T3 (de)
FR (1) FR2779811B1 (de)
GC (1) GC0000056A (de)
NO (1) NO322639B1 (de)
NZ (1) NZ508349A (de)
TW (1) TW432194B (de)
WO (1) WO1999064804A1 (de)
ZA (1) ZA200007066B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2825455B1 (fr) * 2001-05-30 2003-07-11 Pechiney Aluminium Procede et dispositif de refroidissement des alveoles d'un four a chambres
US7104789B1 (en) * 2005-03-17 2006-09-12 Harbison-Walker Refractories Company Wall structure for carbon baking furnace
CN101606036B (zh) * 2007-09-18 2011-12-28 德国伊诺瓦有限公司 热量回收方法及设备
FR2928206B1 (fr) * 2008-02-29 2011-04-22 Solios Carbone Procede de detection de cloison au moins partiellement bouchee pour four a chambres
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.
WO2011027042A1 (fr) * 2009-09-07 2011-03-10 Solios Carbone Methode de caracterisation de la combustion dans des lignes de cloisons d'un four a chambres a feu(x) tournant(s)
FR2963413A1 (fr) * 2010-07-27 2012-02-03 Alcan Int Ltd Procede et un systeme de regulation de la cuisson de blocs carbones dans une installation
EP2753889B1 (de) * 2011-09-08 2015-11-18 Fives Solios S.A. Vorrichtung und verfahren zur optimierung der verbrennung in partitionsreihen eines kammerofens zum brennen von kohlenstoffblöcken
US20130108974A1 (en) * 2011-10-26 2013-05-02 Fluor Technologies Corporation Carbon baking heat recovery firing system
FR3135089B1 (fr) * 2022-04-27 2026-01-02 Fives Ecl Unité de remplissage de coke de pétrole et procédé de remplissage

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1351305A (en) * 1919-03-19 1920-08-31 Albert G Smith Furnace construction
DE468252C (de) * 1925-06-18 1928-11-09 Antonius Ludovicus Geldens Ziegelringofen mit doppelten Trennwaenden zwischen den Brennkammern und in verschiedenen Hoehen angeordneten Roststaeben
US3975149A (en) * 1975-04-23 1976-08-17 Aluminum Company Of America Ring furnace
US4253823A (en) * 1979-05-17 1981-03-03 Alcan Research & Development Limited Procedure and apparatus for baking carbon bodies
NO152029C (no) * 1982-11-05 1985-07-17 Ardal Og Sunndal Verk Ringkammerovn og fremgangsmaate for drift av denne
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
JPS63503560A (ja) * 1986-06-17 1988-12-22 アリユミニウム・ペシネ 炭素質ブロック焼成用チャンバ炉内での燃焼を最適化する装置及び方法
FR2600152B1 (fr) * 1986-06-17 1988-08-26 Pechiney Aluminium Dispositif et procede d'optimisation de la combustion dans les fours a chambres pour la cuisson de blocs carbones
FR2629906B1 (fr) * 1988-04-08 1991-02-08 Pechiney Aluminium Procede de construction de fours a chambres ouvertes permettant d'eviter leur deformation

Also Published As

Publication number Publication date
TW432194B (en) 2001-05-01
CA2334994C (fr) 2009-02-03
EP1093560A1 (de) 2001-04-25
NZ508349A (en) 2003-10-31
NO322639B1 (no) 2006-11-13
BR9911134A (pt) 2001-10-23
NO20006234D0 (no) 2000-12-07
WO1999064804A1 (fr) 1999-12-16
DE69906296T2 (de) 2003-12-04
EG21714A (en) 2002-02-27
FR2779811A1 (fr) 1999-12-17
AU745152B2 (en) 2002-03-14
FR2779811B1 (fr) 2000-07-28
ZA200007066B (en) 2002-02-28
NO20006234L (no) 2000-12-07
US6027339A (en) 2000-02-22
CA2334994A1 (fr) 1999-12-16
GC0000056A (en) 2004-06-30
CN100445680C (zh) 2008-12-24
AU745152C (en) 2002-09-26
ES2191433T3 (es) 2003-09-01
CN1305579A (zh) 2001-07-25
AU4147899A (en) 1999-12-30
DE69906296D1 (de) 2003-04-30
AR018655A1 (es) 2001-11-28

Similar Documents

Publication Publication Date Title
CA2334994C (fr) Four a feu tournant a flux central tubulaire
FR2529303A1 (fr) Appareil d'incineration vertical a recuperation thermique
EP0769316A1 (de) Verteiler zur unabhängigen Ein- und/oder Abführung von Fluiden
EP0090790A1 (de) Vorrichtung zur thermischen Behandlung von Gegenständen mittels Konvektion
FR2702831A1 (fr) Procédé et dispositif de refroidissement de l'enceinte d'un échangeur thermique.
CA2324935C (fr) Procede et dispositif de regulation des fours de cuisson a feu tournant
JP2018507951A (ja) コークス炉コーベル構造
CA3035837C (fr) Module de cuisson de four tunnel lineaire pour produits de boulangerie, viennoiserie et similaires et four tunnel lineaire comportant au moins un tel module
EP1133666B1 (de) Vorrichtung zur hochtemperaturwärmebehandlung von holzartigem material
JP5041463B2 (ja) 陶芸窯
RU2420067C2 (ru) Нагревательный элемент для хлебопекарных печей
EP2724110A1 (de) Wärmeregenerator
WO2021123608A1 (fr) Machine de fabrication additive par depot de lit de poudre avec une rampe centrale d'aspiration de gaz ou de soufflage de gaz
EP1077267B1 (de) Vorrichtung zum Durchlaufwärmebehandeln von metallischen Werkstücken, einzeln oder gruppenweise
WO2023007087A1 (fr) Dispositif de chauffage à accumulation
EP1906125B1 (de) Ofen mit Rahmen
WO2015049428A1 (fr) Procede d'injection de combustible gazeux dans un four a chambres a feu(x) tournant(s)
EP0940372B1 (de) Vorrichtung zur thermischen Behandlung von Glastafeln
JP2006274495A (ja) シール室
EP1420612B1 (de) Brenner für auf hoher Temperatur zu behandelndes Material
FR3053774B1 (fr) Installation de refroidissement de gaz ou fumees dans un conduit de circulation a l'aide d'un dispositif de refroidissement
EP1093841A1 (de) Stoff- und Wärmeaustauscher
FR2862130A1 (fr) Procede de cuisson de brique longues
FR2692756A1 (fr) Ensemble de production d'air chaud, notamment pour fours de boulangerie, pâtisserie, ou analogue, à chariots fixes ou mobiles à recyclage d'air.
CH354047A (fr) Four à cuisson

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: 20001208

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR NL

17Q First examination report despatched

Effective date: 20010521

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RTI1 Title (correction)

Free format text: RING TYPE FURNACE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE ES FR NL

REF Corresponds to:

Ref document number: 69906296

Country of ref document: DE

Date of ref document: 20030430

Kind code of ref document: P

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2191433

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: 20031230

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

Ref country code: ES

Payment date: 20100628

Year of fee payment: 12

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20121116

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: 20110609

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

Ref country code: DE

Payment date: 20130627

Year of fee payment: 15

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

Ref country code: FR

Payment date: 20130702

Year of fee payment: 15

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

Ref country code: NL

Payment date: 20130626

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69906296

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20150101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150227

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: 20150101

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69906296

Country of ref document: DE

Effective date: 20150101

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: 20150101

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: 20140630