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WO2004027332A1 - Optimisation de la combustion des vapeurs de poix dans un four pour electrodes au carbone - Google Patents

Optimisation de la combustion des vapeurs de poix dans un four pour electrodes au carbone Download PDF

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Publication number
WO2004027332A1
WO2004027332A1 PCT/CH2003/000599 CH0300599W WO2004027332A1 WO 2004027332 A1 WO2004027332 A1 WO 2004027332A1 CH 0300599 W CH0300599 W CH 0300599W WO 2004027332 A1 WO2004027332 A1 WO 2004027332A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion
furnace
fire
pitch
soot particles
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.)
Ceased
Application number
PCT/CH2003/000599
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German (de)
English (en)
Inventor
Mauritz Lustenberger
Felix Keller
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.)
R & D Carbon Ltd
Original Assignee
R & D Carbon Ltd
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 R & D Carbon Ltd filed Critical R & D Carbon Ltd
Priority to AU2003257351A priority Critical patent/AU2003257351A1/en
Priority to EP03797134A priority patent/EP1543283A1/fr
Publication of WO2004027332A1 publication Critical patent/WO2004027332A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F27B13/14—Arrangement of controlling, monitoring, alarm or like 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
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
    • 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
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
    • F27D2019/0018—Monitoring the temperature of the atmosphere of the kiln

Definitions

  • the invention relates to a method and a device for optimizing the combustion of pitch vapor in a furnace for carbon electrodes, in particular anodes for aluminum melt flow electrolysis, which furnace comprises at least one cassette for green, pitch-containing electrodes embedded in fill powder from adjacent fire ducts. a gaseous or liquid fuel being introduced into the fire ducts operated with negative pressure while continuously monitoring negative pressure and temperature.
  • anodes For the large-scale production of primary aluminum, petroleum coke, recirculated anode material and pitch are used as binders according to the technology that is still common today.
  • the last process step in anode production consists of a heat treatment, the anodes being heated to a final temperature in the range from 1050 to 1200 ° C. at a fixed heating rate.
  • the anodes For an undisturbed electrolysis operation, the anodes must meet the following requirements in particular:
  • the technological background is shown schematically on the basis of an open annular chamber furnace 10 shown in FIG. 1 for burning anodes for the aluminum melt flow electrolysis according to FIG. 1 and is described as an example.
  • the open annular chamber furnace 10 comprises chambers 12 arranged in two parallel rows. These chambers 12, which run transversely to the longitudinal direction L, are also called sections.
  • the last chamber 12 of one row is connected to the first chamber 12 of the other row via a deflection channel 14 at the front ends of the furnace.
  • Each chamber 12 consists of a plurality, usually six to ten, fire shafts 16 (fire chambers), between each of which a cassette 18 is arranged, into which the green electrodes to be burned, in the present case anodes 20, are inserted.
  • the individual chambers 12 are separated from one another by a belt wall 22 (see also FIG. 3) which is described and illustrated later.
  • a cassette 18 is approximately 5 m high, 5 m long and 0.8 m wide.
  • the width of a corresponding fire pit 16 is approximately 0.5 m.
  • Each fire shaft 16 or each cassette 18 comprises two walls 98 (FIG. 6) made of refractory bricks running in the direction L.
  • Baffles 24 are arranged in the combustion chamber 16 in such a way that the smoke gases 62 (FIG. 3) are optimally guided.
  • the annular chamber furnace 10 is arranged in a concrete trough 26, around which an exhaust pipe 28 is guided.
  • This presently U-shaped or ring-shaped exhaust pipe 28 is equipped with a riser 30 for each chamber 12, it is also referred to for short as a ring pipe, even if it is U-shaped, that is to say missing on one end face of the furnace 10.
  • a negative pressure is permanently maintained in the annular chamber furnace 10 by means of the exhaust line 28 via external fans (not shown), which is necessary for maintaining the Process required train ensures.
  • a suction device 36 can be connected to the exhaust pipe 28 by means of a riser pipe 30 with an opening 34. In each riser 30, a flap or the like, not shown, can be attached, with which the negative pressure in the suction device 36 can be set.
  • furnace types There are two furnace types that are equivalent in operation but different in construction.
  • one type there is no flap in the riser 30 from the ring line 28 for connection to the suction device 36.
  • the negative pressure desired in the aspirator 36 is set in the flue gas cleaning system, ie the same negative pressure prevails in the ring line 28 as in the suction body 36 .
  • each suction device 36 is equipped with a manometer; the flap in the riser 30 is only opened after the suction device 36 has been positioned when the fire is changed until the desired negative pressure prevails in the suction device 36.
  • This negative pressure is a multiple (in the order of approximately 800-2000 Pa) of the negative pressure of approximately 100 Pa in the chamber 12 in front of the suction device 36.
  • the distance between the openings 34 in the direction L corresponds to the length of a chamber 12 in this direction and thus approximately the length of a fire shaft 16 and a belt wall 22.
  • the individual fire shafts 16 of the various chambers 12 are in the longitudinal direction with the corresponding shafts of the adjacent chambers L connected, ie connected in series.
  • a suction nozzle 38 branches off from the tubular suction device 36 to each fire shaft 16, each of these nozzles preferably having a motor-operated flap or the like, not shown, which allows the vacuum in the fire shafts 16 to be regulated individually.
  • the individual fire shafts 16 of the various chambers 12 are connected in series with the corresponding shafts of the adjacent chamber.
  • the outermost fire shaft 16 located directly next to the concrete trough 26 is connected to the same shaft of the next chamber.
  • a vacuum control only on the suction device 36 consequently affects all fire shafts 16 of the chambers 12 which are connected in series in the direction of fire F and are involved in the process.
  • a production unit displaceable in the longitudinal direction L in the present case consisting of the suction device 36, the vacuum measuring bridge 40, three burner bridges 42 and two coolers 44, extends over a plurality of chambers 12, two units extending over eleven chambers 12 are shown.
  • a vacuum measuring bridge 40 for measuring vacuum and temperature is arranged on the third chamber 12, a burner bridge 42 each on the fourth, fifth and sixth chamber 12 and a cooler 44 on the ninth and eleventh chamber 12 ,
  • the air is sucked into the cooling zone in such a way that the covers on the burner holes 34 and, if appropriate, belt wall holes 52 (FIG. 2) are removed.
  • the lids are generally kept closed in at least one chamber 12 behind the last burner bridge 42. Viewed in the longitudinal direction L, the pressure zero point is where the first burner cover or belt wall cover is removed; from there the negative pressure drops uniformly to, for example, about 100 Pa in the chamber 12 in front of the suction device 36.
  • the first cooler 44 (ie the cooler 44 adjacent to the rearmost burner bridge 42 can be integrated into the system as a "blower” in terms of control technology. If the system requires more oxygen, not only is the flap position in the corresponding riser 30 of the suction device 36 regulated, but also the fan is raised in the corresponding "blower” foot. The system between the "blower" and the suction device is closed.
  • a heat wave in the furnace in the form of a fire area or fire movement migrates from the burner bridges 42 in the direction of the suction device 36.
  • the production unit mentioned is opened by an opening 34, i.e. H. Chamber length offset in the direction of the advancing heat wave.
  • the time interval is usually in the range of 24 to 32 hours.
  • the air required to burn the heating medium usually natural gas or atomized, drop-shaped or thread-like heavy oil, is passed through the chambers
  • ring chamber furnaces 10 are controlled by means of computers. A time / temperature curve is specified. By regulating the vacuum and the amount of fuel, an attempt is made to maintain a predetermined target curve as well as possible. It is also known that compliance with all objectives - the highest possible production, identical heat treatment of all anodes and complete combustion - cannot be guaranteed in all circumstances with the usual means today. Incomplete combustion leads to the soot formation mentioned and thus to an increased opacity of the flue gases, in other words there is a clouding which reduces the light or radiation permeability.
  • a known weak point of all known processes is an incomplete pitch combustion that occurs again and again. If at any time the accumulated burner output in the fire shafts 16 connected in series and / or the current pitch steam transfer 102 (FIG. 6) from an anode cassette 18 into the fire shafts 16 is too high, an oxygen Shortage of substances occur. As a result, soot particles are formed with the disadvantages mentioned above.
  • known smoke density measuring devices are not intended for mobile use.
  • the extractor is a component weighing several tons, which after each fire cycle, i.e. about every 28 hours with which the crane has to be moved around a combustion chamber.
  • the adjustment of the smoke density measuring device is adversely affected by this transport process, which often results from accelerations being too high when the suction device is set down. Incorrect measurements result with all the undesirable consequences that result, such as incorrect process control actions.
  • the inventors have set themselves the task of creating a method and a device for carrying it out of the type mentioned at the outset which prevent the formation and existence of soot particles in the furnace atmosphere.
  • the object is achieved according to the invention in that the process flow in the area of visible pitch-damping combustion is continuously monitored optically and the formation of soot particles is optically detected, a quasi-real-time evaluation of the results and, if necessary, a corrective action for furnace monitoring and process optimization is carried out automatically is initiated by removing the soot particles by adapting at least one process parameter in the fire pit in question on the basis of available data.
  • Special and further embodiments of the method are the subject of dependent claims.
  • any soot formation can be recorded directly in each fire shaft, which enables direct automatic process control. This is done by - as mentioned - changing at least one of the process parameters vacuum, fuel supply and secondary air metering according to stored experience and / or calculated data.
  • the temperature is preferably measured simultaneously with the monitoring of the combustion process using an optical sensor, in particular at the same location.
  • the opacity absorbs radiation, which is measured with an optical sensor.
  • the use of a two-color pyrometer, which simultaneously measures the temperature and any radiation absorption by soot particles, is particularly advantageous. Such two-color pyrometers are available on the market.
  • the combustion process can be monitored using a commercially available camera.
  • the image evaluation takes place in quasi real time. We speak of quasi real time because the evaluation unit detects the combustion process in the affected fire shafts sequentially, which takes place in fractions of a second. If the evaluation unit detects a deviation from the desired situation in the course of monitoring the pitch vapor combustion with regard to the formation of soot particles, an automatic corrective action takes place in the desired sense.
  • the combustion process is recorded using a pyrometer with a very short response time and recorded as signal noise. If a different signal noise is detected due to the formation of soot particles, an automatic correction action is also carried out by changing at least one of the parameters vacuum, fuel supply and metering of secondary air by means of stored data.
  • the combustion process is monitored continuously, with the sensor signals being queried cyclically, and the cycle time being freely configurable. It is preferably carried out in cycle times of one to several seconds, for example 5-10 seconds.
  • the object is achieved according to the invention in that one or more optical sensors for continuously monitoring the combustion and the formation of soot particles in the flue gas are arranged in at least one fire shaft in the region of the vacuum measuring bridge.
  • one or more optical sensors for continuously monitoring the combustion and the formation of soot particles in the flue gas are arranged in at least one fire shaft in the region of the vacuum measuring bridge.
  • Deviations from the normal course of combustion and automatic corrective actions are appropriately signaled on a screen and registered in a database. This gives the operating personnel a complete overview of the process at all times and the data is available for subsequent analysis.
  • An optical sensor is preferably arranged in the area of the vacuum measuring bridge in each fire shaft. Temperature-sensitive and / or corrosion-prone optical sensors can be protected, for example, by a pyrex insert.
  • soot particles can not only be detected as a whole immediately, but also localized and eliminated.
  • Complete pitch steam combustion without the formation of soot particles is achieved again by automatically initiating corrective actions.
  • secondary air can be metered in, if necessary, by appropriate means, ie the oxygen content of the flue gases can be increased.
  • the addition of secondary air in the area of pitch combustion is not necessary. Secondary air is even undesirable since it is more energetically advantageous to maintain combustion with preheated primary air rather than cold secondary air. However, if the primary air is insufficient, it is better to work with secondary air than to accept incomplete combustion.
  • An open annular chamber furnace is particularly suitable for carrying out the method according to the invention.
  • the method and device are described on the basis of the production of anodes for aluminum melt flow electrolysis.
  • the same or analogous means are used for burning other anodes and cathodes.
  • FIG. 1 represents an open ring chamber furnace known per se
  • FIG. 2 shows the oxygen content, the anode temperature, the temperature in the fire shaft and the negative pressure over several chambers of an open annular chamber furnace
  • FIG. 3 shows a partial longitudinal section through the fire shafts of an annular chamber furnace
  • FIG. 5 shows the arrangement of a camera in the area of a burner hole
  • FIG. 6 shows a vertical partial section through a chamber area transverse to
  • Fire direction. 2 are seven on the abscissa. Chambers 12 of an annular chamber furnace 10 (these and the reference numerals following with reference to FIG. 2 refer to FIG. 1), the direction of fire F runs from right to left. An aspirator is arranged above chamber 1, a vacuum measuring bridge above chamber 3 and three burner bridges above chambers 4 to 6. With regard to the three ordinates, the negative pressure p is dashed, the temperature Ti ⁇ of the fire pit 16 is punctured, the anode temperature T 2u is dashed and the curve of the oxygen content O 2 is shown with a solid line.
  • the combustion air is drawn in via the chambers 12 between the rearmost burner bridge 42 and the cooler 44, whereby the air is preheated, which improves the process efficiency.
  • the oxygen content gradually decreases in the direction F of the flue in the area of the burner bridges, each burner consumes part of the oxygen.
  • the area of the vacuum measuring bridge there is a continuous drop in the oxygen content due to the pitch combustion.
  • the volatile components of the binder diffused into the fire shaft 16 ignite and make a contribution of 30 to 50% to the total energy consumption of the annular chamber furnace 10. The remaining 50 to 70% of the energy supply takes place via the burner bridges 42.
  • a dotted curve T ⁇ 6 shows the heating of the flue gases in the fire shafts 16 against the direction of fire F.
  • the temperature profile depends on the given process parameters and on the furnace design. There is a striking rise in temperature in the area of visible pitch combustion, immediately before the vacuum measuring bridge 40. A peak is reached immediately after reaching chamber 3 with the vacuum measuring bridge, after which the temperature T- ⁇ 6 drops slightly and then rises in the area of Burner bridges 42 above the chambers 4 to 6 up to the maximum. After these burner bridges 42, the temperature T- ⁇ 6 gradually drops in the fire ducts 16. In the area of the cooler 44 which is not shown, air is blown into the fire ducts 16 at room temperature The anode temperature T 20 rises continuously during the firing process and is delayed compared to the fire pit temperature. The maximum firing temperature of about 1050 - 1200 ° C is reached at the last burner bridge 42 or directly behind it.
  • the negative pressure p drops in the direction of fire F from the value 0 Pa at the beginning of the cooling zone to about 100 Pa at the extractor 36 in chamber 1. Via the flap in the extractor connector 38, the negative pressure p increases to the value in the extractor 36 or in the ring line 28.
  • a partial longitudinal section through the fire shafts 16 in the direction L through an open annular chamber furnace 10 shows four chambers 12 in FIG. 3, which are partially separated by belt walls 22.
  • the flue or furnace gases 62 can pass from the fire shaft to the fire shaft 16 in the direction of fire F.
  • the temperature distribution can be optimized by arranging baffles 24 in the fire shafts 16.
  • the furnace cover 50 carries a burner bridge 42, a vacuum measuring bridge 40 and an aspirator 36 as attached equipment. There are also 50 openings left in the oven cover.
  • a shut-off element 54 in the form of a slide is introduced through belt wall openings 52 or burner holes 58 dimensioned for this purpose.
  • the opening between the belt wall 22 and cover 50 is closed in the area of the suction device 36 in such a way that a negative pressure can be generated in the heating zone.
  • Openings in the furnace cover 50 are generally round or rectangular. There are ovens with and without belt wall openings 52.
  • the burner holes 58 adjacent to the belt wall 22 are dimensioned so large that the shut-off element 54 can be inserted through a burner hole 58.
  • Adjustable shut-off device 54 are introduced.
  • the opening between the belt wall 22 and cover 50 is closed in the area of the suction device 36 in such a way that a negative pressure can be generated in the heating zone.
  • the remaining belt wall openings 52 are closed.
  • the belt wall openings 52 are drawn and at least one burner hole 58 is dimensioned so large that a shut-off element 54 can be inserted there.
  • the suction nozzle 38 of the suction device 36 is placed on the openings 56 adjacent to the shut-off device 54.
  • the temperature of the flue gas 62 flowing into the chamber 16 is measured with a thermocouple 60 and evaluated, stored, forwarded and in the present case visualized with a display in a microprocessor 64.
  • a vacuum measuring bridge 40 with a vacuum probe 66 and a two-color pyrometer 68 according to the invention is arranged as an optical measuring probe, which simultaneously measures the temperature door measurement is used.
  • the vacuum measuring bridge 40 also includes a microprocessor 70. Furthermore, the vacuum measuring bridge 40 shows a valve 72 for adding secondary air if formation of soot particles is detected. Another valve 74 for secondary air is arranged on the belt wall cover, this serves the same purpose.
  • a burner bridge 42 is arranged adjacent to the vacuum measuring bridge 40 on the fire shaft 16 opposite the direction of fire F.
  • the fuel is injected in gaseous form or as a liquid via burners in the burner holes 58 in the fire shaft 16.
  • two ignited flames 76 are shown; in the direction of view one behind the other, six flames 76 are fed through six burner holes 58, which extend in fire direction F over a plurality of fire shafts 16.
  • a thermocouple 78 is assigned to each fired fire shaft 16 and feeds the measured values into a microprocessor 80.
  • the three microprocessors 64, 70, 80 are connected autonomously or expediently to a central computer (not shown). After all sections involved in the process, i.e. the sections in the heating system, which are connected to each other via the common combustion air flow and are also dependent on each other, optimum process control is only possible if a higher-level control system takes into account all information from all the sections involved and uses this to calculate the optimal correction strategy.
  • the autonomous operation of the microprocessors on the respective furnace equipment is a second best approach in the event that the data transmission from the furnace equipment to the central computer does not work.
  • three burner bridges 42 each with twelve burners, a measuring bridge 40 directly adjoining the firing direction F, each with six measuring points for the temperature and the negative pressure, can be seen in the top view of an end face of an open annular chamber furnace.
  • a further tere bridge arranged, which is equipped with six cameras 82, more precisely electronic miniature cameras, which are arranged above six openings 56 (Fig. 3).
  • the cameras are “in-line” with the fire shafts 16 of the burner bridges 42 and the measuring devices of the vacuum measuring bridge 40 and are shown in more detail in FIG. 5.
  • the cameras 82 are in the area of the pitch vapor combustion 84 characterized by parallel lines.
  • the camera 82 also an optical sensor, continuously checks the pitch vapor combustion. If an image is detected that does not deviate from the stored standard image or deviates only minimally, no corrective action is taken. If, on the other hand, an image is detected that deviates significantly from the standard image, an automatic correction action is initiated:
  • a chamber upstream of the suction device 36 with respect to the direction of fire F is preferably filled with green anodes and is then referred to as the sealing chamber 86.
  • a camera 82 shown in FIG. 5 for monitoring the pitch vapor combustion is arranged on a burner block 90 via a support 88.
  • the camera 82 is protected from damaging effects by means of a transparent insert 92 made of heat-resistant and resistant material, for example Pyrex glass.
  • FIG. 6 shows the embedding of green electrodes 20, in the present case anode for the aluminum melt flow electrolysis.
  • the alternating cassettes 18 and fire ducts 16 of a chamber of an open annular chamber furnace are separated by a porous wall 98 made of refractory bricks 96.
  • the porosity of the wall is achieved by applying mortar only in the horizontal joints between the stone layers. There is no mortar in the vertical joints between the stones, for example a piece of cardboard can be inserted as a spacer, which causes the porosity of the wall 98.
  • the space between the stacked anodes 20 and the refractory walls 98 is filled with a filling powder 32, for example made of petroleum coke, anthracite or hard coal granulate.
  • the anodes 20 themselves consist of petroleum coke and about 13-16% by weight of pitch as a binder. A portion of the binder emerges in gaseous form when the anodes are heated and is drawn off via the porosity of the filling powder 32 and the walls 98 into the fire shafts 16, in which a negative pressure is maintained via the ring line and the suction device. This diffusion process of pitch vapor is indicated by dashed arrows 102. If the furnace is correctly dimensioned and operated, the volatile components of the binder ignite and burn completely, which is referred to as pitch vapor combustion.
  • soot particles 104 is detected by an optical sensor, in the present case a two-color pyrometer 68, the advised computer immediately initiates an automatic correction action.
  • an optical sensor in the present case a two-color pyrometer 68
  • soot particles regulated as follows:
  • the system compares the actual and the target temperature at all measuring points. To determine the control action, the respective deviations in all relevant fire ducts 16 are taken into account. Furthermore, the value of the temperature rise (actual gradient) is calculated and compared with the corresponding target gradient. As a control variable, the suppression p on the aspirator 36 and the amount of fuel in the burners in the considered fire train are available for each fire train.
  • the system calculates the optimal control action based on the measured temperature deviations and gradients.
  • the system checks the pitch burning situation before executing it. If this is OK, the corrective action is carried out as calculated. If, on the other hand, an incomplete pitch combustion is detected, then the correction action is adjusted in such a way that a complete pitch combustion is achieved again. Soot formation is preferably displayed to the operating personnel on a monitoring monitor. All relevant data are stored in a database. Suitable evaluation algorithms allow statements to be made about defective fire ducts 16 and about any adaptation that may be necessary, ie optimization of the target combustion curve to the material to be fired.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

La présente invention concerne un procédé pour optimiser la combustion de vapeurs de poix dans un four destiné à des électrodes au carbone (20), notamment à des anodes pour électrolyse de fusion d'aluminium. Ledit four comprenant au moins une cassette (18) séparée par une paroi poreuse (98) des chambres de combustion voisines (16), et destinée à des électrodes (20) vertes contenant de la poix et noyées dans de la poudre de remplissage (32). Dans les cuves de combustion (16) qui fonctionnent sous dépression (p), est introduit, sous régulation continue de la dépression (p) et de la température, un combustible gazeux ou liquide. Le déroulement du processus dans le domaine de la combustion visible des vapeurs de poix (84) est surveillé visuellement en continu et la formation de particules de suie (104) est détectée visuellement. Une évaluation quasiment en temps réel des résultats s'effectue lorsqu'il devient nécessaire de mettre en route automatiquement une action de correction pour surveiller le four et optimiser le processus. Selon l'invention, les particules de suie sont éliminées par adaptation d'au moins un paramètre de processus dans la cuve de combustion (16) concernée au moyen de données disponibles. Un four à chambres annulaires ouvert (10) qui sert à mettre en oeuvre le procédé comprend des chambres (12) qui sont disposées sensiblement en série et comprennent des cuves de combustion (16) alternées entre lesquelles sont intercalées des cassettes (18), et une unité de production qui peut se déplacer dans la direction longitudinale (L), s'étend sur plusieurs chambres (12), et comprend un dispositif d'aspiration (36), un pont de mesure basse pression (40), au moins un pont de brûleur (42) et au moins un dispositif de refroidissement (44). Dans au moins une cuve de combustion (16) au niveau du pont de mesure basse pression (40) se trouve un ou plusieurs capteurs optiques (68, 82) qui servent à surveiller en continu la combustion et la formation de particules de suie (104) dans les gaz de combustion (62).
PCT/CH2003/000599 2002-09-23 2003-09-03 Optimisation de la combustion des vapeurs de poix dans un four pour electrodes au carbone Ceased WO2004027332A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003257351A AU2003257351A1 (en) 2002-09-23 2003-09-03 Optimization of pitch steam combustion in a furnace for carbon electrodes
EP03797134A EP1543283A1 (fr) 2002-09-23 2003-09-03 Optimisation de la combustion des vapeurs de poix dans un four pour electrodes au carbone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01598/02A CH695870A5 (de) 2002-09-23 2002-09-23 Optimierung der Pechdampfverbrennung in einem Brennofen für Kohlenstoffelektroden.
CH1598/02 2002-09-23

Publications (1)

Publication Number Publication Date
WO2004027332A1 true WO2004027332A1 (fr) 2004-04-01

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EP (1) EP1543283A1 (fr)
AU (1) AU2003257351A1 (fr)
CH (1) CH695870A5 (fr)
WO (1) WO2004027332A1 (fr)

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FR2890661A1 (fr) * 2005-09-12 2007-03-16 Ecl Soc Par Actions Simplifiee Reservoir de poussier utilise pour la cuisson d'anodes, installation de cuisson d'anodes et procede de mise en place d'anodes dans un four
EP2159525A1 (fr) * 2008-08-29 2010-03-03 Air Liquide Deutschland GmbH Procédé de fonctionnement d'un four ainsi que dispositif destiné à l'exécution du procédé
DE102009046937A1 (de) * 2009-11-20 2011-05-26 Innovatherm Prof. Dr. Leisenberg Gmbh + Co. Kg Verfahren und Vorrichtung zur Herstellung von Anoden
WO2013187959A1 (fr) 2012-06-15 2013-12-19 Fluor Technologies Corporation Four de cuisson de carbone à feu mobile à récupération de chaleur
WO2013187960A1 (fr) 2012-06-15 2013-12-19 Fluor Technologies Corporation Système d'allumage à récupération de chaleur et de préchauffage d'oxygène pour cuisson de carbone

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RU2452910C2 (ru) * 2010-08-04 2012-06-10 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт конструкционных материалов на основе графита "НИИграфит" Электрическая печь графитации

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DE19536237A1 (de) * 1995-09-28 1997-04-03 Siemens Ag Verfahren und Vorrichtung zur Bestimmung von Innentemperaturen bei hüttentechnischen Anlagen

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FR2890661A1 (fr) * 2005-09-12 2007-03-16 Ecl Soc Par Actions Simplifiee Reservoir de poussier utilise pour la cuisson d'anodes, installation de cuisson d'anodes et procede de mise en place d'anodes dans un four
WO2007031624A3 (fr) * 2005-09-12 2007-10-11 Ecl Dispositif de remplissage de poussier, installation de cuisson d'anodes et procede de mise en place d'anodes dans un four
US8721764B2 (en) 2008-08-29 2014-05-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for operating a furnace and device for carrying out the method
WO2010022964A1 (fr) * 2008-08-29 2010-03-04 Air Liquide Deutschland Gmbh Procédé de fonctionnement d’un four et dispositif de mise en œuvre du procédé
CN102138051A (zh) * 2008-08-29 2011-07-27 乔治洛德方法研究和开发液化空气有限公司 用于运行炉子的方法和用于实施该方法的设备
RU2507461C2 (ru) * 2008-08-29 2014-02-20 Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод Способ эксплуатации печи, а также устройство для осуществления этого способа
EP2159525A1 (fr) * 2008-08-29 2010-03-03 Air Liquide Deutschland GmbH Procédé de fonctionnement d'un four ainsi que dispositif destiné à l'exécution du procédé
DE102009046937A1 (de) * 2009-11-20 2011-05-26 Innovatherm Prof. Dr. Leisenberg Gmbh + Co. Kg Verfahren und Vorrichtung zur Herstellung von Anoden
US9328960B2 (en) 2009-11-20 2016-05-03 Innovatherm Prof. Dr. Leisenberg Gmbh+Co. Kg Method and device for producing anodes
DE102009046937B4 (de) 2009-11-20 2019-12-05 Innovatherm Prof. Dr. Leisenberg Gmbh + Co. Kg Verfahren und Vorrichtung zur Herstellung von Anoden
WO2013187959A1 (fr) 2012-06-15 2013-12-19 Fluor Technologies Corporation Four de cuisson de carbone à feu mobile à récupération de chaleur
WO2013187960A1 (fr) 2012-06-15 2013-12-19 Fluor Technologies Corporation Système d'allumage à récupération de chaleur et de préchauffage d'oxygène pour cuisson de carbone
US9194628B2 (en) 2012-06-15 2015-11-24 Fluor Technologies Corporation Carbon baking oxygen preheat and heat recovery firing system
US9970710B2 (en) 2012-06-15 2018-05-15 Fluor Technologies Corporation Carbon baking heat recovery ring furnace

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AU2003257351A1 (en) 2004-04-08
CH695870A5 (de) 2006-09-29

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