EP1530700A1 - Procede pour faire fonctionner un ensemble four annulaire, et ensemble four annulaire - Google Patents

Procede pour faire fonctionner un ensemble four annulaire, et ensemble four annulaire

Info

Publication number
EP1530700A1
EP1530700A1 EP03750275A EP03750275A EP1530700A1 EP 1530700 A1 EP1530700 A1 EP 1530700A1 EP 03750275 A EP03750275 A EP 03750275A EP 03750275 A EP03750275 A EP 03750275A EP 1530700 A1 EP1530700 A1 EP 1530700A1
Authority
EP
European Patent Office
Prior art keywords
furnace
ring
exhaust air
furnace chamber
heat exchanger
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.)
Withdrawn
Application number
EP03750275A
Other languages
German (de)
English (en)
Inventor
Bernd Jeskolka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1530700A1 publication Critical patent/EP1530700A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type or of the type in which a segmental kiln moves over a stationary charge
    • F27B13/06—Details, accessories or equipment specially adapted for furnaces of this type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/10—Arrangements for using waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/20—Arrangements for treatment or cleaning of waste gases
    • 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
    • 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
    • F27D21/00—Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/0014—Devices for monitoring temperature
    • 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
    • F27D2019/0021—Monitoring the temperature of the exhaust gases

Definitions

  • the invention relates to a method for operating a ring furnace system with a plurality of furnace chambers for receiving a combustible material, v> / o wherein the furnace chambers are assigned to a heating region, a fire region, a cooling region and a handling region and the furnace chambers with one which moves from one furnace chamber to the next furnace chamber Fire is applied in a fire migration direction and the process air in the fire migration direction is fed from the cooling area via the fire area to the heating area and the exhaust air laden with pollutants resulting from the combustion process is discharged after flowing through the heating area, as well as a ring furnace system for this.
  • Ring kiln systems serve among other things for the production of ceramic moldings or of carbon solids or carbon-containing ceramic bodies, generally referred to as firing material.
  • the Brenng ⁇ f is inserted into the furnace chambers and burned.
  • the process air is enriched with pollutants, which outgas from the fuel during the heating phase. This outgassing takes place due to the process, starting with the first furnace chamber in the firing process up to the nth furnace chamber in the firing process, in which the appropriate temperature and dwell time for the evaporation of the additives, such as binding agents, in the fuel to be burned are reached.
  • post-combustion of the exhaust air and the load it carries is sufficient to clean the contaminated exhaust air from the combustion process.
  • the invention has for its object to operate a ring furnace in a particularly economical manner while saving thermal energy and at the same time to clean the process air contaminated with pollutants - exhaust air - in an economical manner.
  • each furnace chamber in the combustion process is formed with a heat exchanger with flow channels and the exhaust air laden with pollutants from the first furnace chamber in the combustion process, namely the first furnace chamber located in the heating area , is suctioned off and fed into a ring line and is fed from the ring lifter to the heat exchanger of the last furnace chamber in the firing process for heat exchange and from there in the direction of the fire migration through the heat exchangers of the furnace chambers to the heat exchangers of the furnace chambers located in the heating area and from there is fed to a clean gas line for discharge.
  • the energy contained in the polluted exhaust air is fed back to the combustion process in a particularly simple and economical manner.
  • the method according to the invention makes it possible to purify the polluted exhaust air from the ring furnaces without an additional system, which sometimes also incurs operating and maintenance costs.
  • the energy released from the burning pollutants in the exhaust air is used to preheat the furnace chambers to be heated via the air heat exchangers formed in the furnace chambers.
  • the furnace bottom and / or the furnace walls and / or the furnace covers of the furnace chambers are preferably designed as heat exchangers with flow channels for the passage of the exhaust air laden with pollutants.
  • the heat exchanger is formed in the furnace lid for each furnace chamber in the combustion process.
  • the already existing control, regulation and monitoring ""'of the ⁇ ring furnace " is only " to be supplemented by an additional temperature monitoring of the heat exchangers, for which a little effort is required.
  • the regulation of the temperature can by supplying cold fresh air together with the exhaust air from the ring line into the heat exchanger of the furnace lid of the last furnace chamber in the combustion process, e.g. B. by means of a control valve.
  • each heat exchanger is such.
  • the lid in the oven floor or the furnace wall furnace chamber , together with the respective furnace chamber under fire, burned cleanly at least once after passing through all n furnace chambers.
  • the exhaust air laden with pollutants be passed through all heat exchangers of all furnace chambers that are in the combustion process to the first furnace chamber in operation and only be transferred from this last heat exchanger to the first furnace chamber that is in operation into the clean gas line.
  • the economical supply of thermal energy from the polluted exhaust air is achieved according to the invention by preheating the polluted exhaust air as it flows through the heat exchangers of the furnace chambers, starting from the cooling area to the hottest of the fired furnace chambers, until the combustors are burned in the temperature required in the exhaust air is reached within the heat exchangers and subsequently the pollutants in the exhaust air burn as they flow through the heat exchangers and the exhaust air cleaned and heated by combustion flows through the subsequent heat exchangers in the furnace chambers in the heating region of the furnace chambers and give off heat energy to the furnace chambers for heating them up and at the end, the cooled, cooled exhaust air from the heat exchanger, in particular the first furnace chamber in operation, is discharged into the clean gas line.
  • the dwell time of the exhaust air in the heat exchangers to achieve the necessary combustion temperature by changing the free air-carrying cross section of the flow channels in the heat exchangers of the furnace cover.
  • the temperature in the flow channels of the heat exchangers of the furnace lid is recorded and monitored and taken into account for maintaining the temperatures in the furnace chambers.
  • a ring furnace system which is equipped with a plurality of furnace chambers for receiving combustible material, the furnace chambers being assigned to a heating region, a fire region, a cooling region and a transfer region and the fire progressing from one furnace chamber to the next furnace chamber in a direction of fire migration, wherein process air, starting from the cooling area, can be fed to the furnace chambers and can be guided through the furnace chambers in the direction of the fire migration, and the process air loaded with pollutant by the combustion process can be removed as exhaust air from the furnace chambers.
  • each furnace chamber in the combustion process is designed with a heat exchanger having flow channels and the heat exchangers can be supplied with exhaust air laden with pollutants.
  • the ring furnace system of the conventional type according to the invention for example for firing ceramic moldings, is only supplemented by heat exchangers which are assigned to each furnace chamber and which, according to the invention, are advantageously formed in the furnace cover associated with each furnace chamber.
  • the furnace lid By designing the furnace lid as a heat exchanger, they not only serve to exchange heat for the exhaust air, i.e. the recovery of heat energy from the exhaust air for the combustion process, but also as an afterburner for the pollutants in the exhaust air.
  • the flow channels of the heat exchangers in the furnace chambers e.g. B. oven deckein, continuously to connect with each other, so that they can be loaded with pollutant-laden exhaust air from the ring furnace system, which is continuously guided in the fire migration direction by the heat exchanger of the furnace chamber.
  • the ring furnace system is equipped with a ring line that can be connected to each furnace chamber via a connecting skin, so that the exhaust air from the furnace chambers can be transferred to the ring line, for which purpose a slip-on piece with a support fan is provided, which according to progress in the direction of fire migration of fire from the furnace chamber to the furnace chamber for the purpose of connecting the furnace chamber to the ring lifter, the connection being made to the first of the furnace chambers in the combustion process.
  • a single transfer piece with a supporting fan is required in order to lead the exhaust air from the combustion process out of the furnace chamber and to introduce it into the heat exchangers of the furnace chambers for the purpose of heat exchange.
  • the entire exhaust air, which arises from the process air is preferably diverted from the first furnace chamber in the combustion process and fed to heat recovery and post-combustion within the ring furnace system.
  • a slip-over piece is again provided, which connects the ring lift with the corresponding heat exchanger, this likewise single transfer piece in the direction of the fire migration, in accordance with the progress of the fire, in each case the last furnace chamber in the combustion process, ie. H. whose heat exchanger is assigned and connected to this.
  • This can also be equipped with a backup fan to optimize the pressure conditions in the air control system.
  • the furnace cover is a single discharge conductor for connecting the respective heat exchanger with the Reingasleitressg scheduled ", which is in turn displaceable in the fire wall construction according to the progress of the fire from the respective oven chamber to the next successive furnace chamber, and is preferably assigned to the heat exchanger of the first furnace chamber in operation.
  • the clean gas flow is assigned to the ring furnace system and equipped with connection points for the heat exchanger of each furnace chamber.
  • the clean gas ducting is preferably equipped with a clean gas fan for an orderly discharge.
  • the clean gas line can be followed by cleaning devices for the exhaust air or a chimney directly.
  • the furnace chambers of the ring furnace system are connected to one another via flue gas ducts for the passage of the process air in the direction of the fire migration.
  • each furnace chamber is equipped with a connection for connection to the transfer piece to the ring line.
  • the furnace covers designed as heat exchangers for the furnace chambers are composed of at least one ceiling module and two side modules delimiting the ceiling modules on opposite sides, the flow channels for the exhaust air being formed in the ceiling modules.
  • the flow channels in the ceiling modules are continuous from one soap to the other side and to arrange them parallel to the side modules. This makes it possible to connect both the slip-on piece for introducing the polluted exhaust air into the heat exchanger to the furnace cover in the area of the entrances to the flow channels and, on the other hand, the discharge piece for discharging the cleaned exhaust air from the heat exchanger at the exits of the flow channels on the furnace cover in the area of the Connect ceiling modules.
  • the furnace cover in a longitudinal section through the flow channels with an outer trapezoid-like shape, the shorter soap of the trapezoid forming the upper side, so that a wedge-shaped gap with a cross-section is formed between adjacent furnace covers in the area of the ceiling modules. It is thus possible in a simple manner to insert a wedge-shaped connecting piece with flow channels running transversely to the wedge surface between two adjacent furnace covers for connecting the flow ducts of adjacent furnace covers and to close the gap.
  • the method described can also be modified in other continuously operated industrial furnaces, e.g. B. bodies in tunnel ovens or conveyor belt ovens for the production of ceramic mold and for the production of moldings made of charcoal.
  • Process air is fed to the furnace in a controlled manner via the fresh air openings. Like a ring furnace, this also serves to transport heat.
  • the resultant from the combustion process • "laden exhaust air” (Prözes' slTjft is "opposite to the direction of feed of the combustible material starting from the exit toward the entrance of the tunnel furnace a secondary circuit, formed as an air Air heat exchanger (process air exhaust air) guided and removed there.
  • the exhaust air from the furnace operation is cleaned without a further system, which sometimes also incurs operating and maintenance costs.
  • the exhaust air is fed to the air-air heat exchanger, which extends over the entire length of the furnace and is installed in the furnace ceiling or in the soap wall of the furnace, in the region of the furnace exit (cooling zone). This then directs the exhaust air to the high temperature area of the furnace against the feed direction.
  • the organic components of the pollutants are ignited in the heating zone at approx. 750 ° C.
  • the energy released is subsequently used to preheat the high-temperature zone and the preheating zone via the air-air heat exchangers.
  • FIG. 1 scheme of a ring furnace system with 18 furnace chambers and integrated exhaust air purification
  • Figures 3a, 3b, 3c design of the furnace chambers acc. Cross section of parts according to Figure 1,
  • FIGS. 5a, 5b, 5c, 5d design of the furnace cover according to FIGS. 2 to 4 in top view, side view and two cross sections,
  • FIG. 6 cross section through two adjacent furnace covers according to FIG. 3a
  • FIG. 7 cross section CG according to FIG. 3b.
  • FIG. 1 shows the diagram of a ring furnace system designed according to the invention “by way of example ” with “ TB ” furnace chamber rf to 18.
  • the direction of fire migration FW, the progress of the fire, is indicated by the circular arrow.
  • the Furnace chambers 9 to 1 and 18, 17 are heated, the furnace chamber 16 is fired, the furnace chambers 15 and 14 are cooled, the furnace chambers 13 to 10 have no furnace lid and are used for handling, that is, after cooling, the unloading of the fired combustion gas and loading with new to burning material.
  • 4 chambers that are assigned to the transhipment area can always have no furnace cover, so that the ring furnace system is equipped with a total of 14 furnace covers in 18 furnace chambers.
  • Two chambers belong to the cooling area, that is the chambers 14 and 15, one chamber to the fire area, that is the furnace chamber 16, and eleven chambers to the heating area, that is the chambers 9 to 1 and 17 and 18.
  • the process air is in the cooling area of the Furnace chamber 14 via a sliding air cover 13a on the furnace chamber 13, e.g. B. an axial fan, and fed from here via flue gas ducts 80, 81, 82, 84 to the following furnace chambers in the direction of fire migration, ie it passes through the ring furnace system from the furnace chamber 14 via 15, 16, 17, 18, 1 to 9.
  • the furnace chambers are for guiding the process air with flue gas ports 82 to one another and connected to one another at the end faces via the flue gas channels 80 and 81.
  • the process air is heated to a high temperature in the fired furnace chamber 16, depending on the firing process, for example above 1000 ° C., and is from here into the subsequent furnace chambers 17, 18 and 1 to 9, giving off the thermal energy and heating the one to be burned in the furnace chambers Good passed through to the first furnace chamber 9 belonging to the present firing process.
  • the furnace chamber 13 which has meanwhile cooled down, is transferred into the handling area, furthermore the furnace chamber 12 is equipped with the sliding air cover 13a in order to discharge of the fired goods.
  • the previously fired furnace chamber 16 is now cooled and the furnace chamber 17 is fired.
  • the furnace chamber 10, which has meanwhile been loaded with new firing material is covered by an furnace lid and now forms the first furnace chamber in the heating process in the heating area, while the previous first furnace chamber 9 now forms the second furnace chamber in the combustion process.
  • Each furnace chamber 1 to 18 is provided with a connection F (Fl to F 18), as a connection for removing the process air from the furnace chamber.
  • the overlap piece 30 with a support fan is connected to the connection F 9, which opens into a ring line 20.
  • the ring line 20 surrounds the ring furnace system " and has " a ring lifting connection R 1 to R 18 assigned to each OTe kamrneF. That with the connection F 9 of Oven chamber 9 connected Uberieitungs Australia 30 thus opens into the connection R 9 of the ring lifter 20th
  • the exhaust air laden with pollutant discharged from the first furnace chamber 9 in the combustion process is fed via the transfer piece 30 and the ring line 20 to the last furnace chamber 14 in the combustion process.
  • the exhaust air laden with pollutant is not supplied to the furnace chamber itself, like the process air, but rather to a heat exchanger WT located in the furnace cover of the furnace chamber 14 and formed there.
  • the furnace chambers 14 to 18 and 1 to 9, which are located in the combustion process according to " Figure 1, are each equipped with an oven cover, which is designed as a heat exchanger.
  • the heat exchanger of the furnace cover are interconnected via connecting channels 900, in the region of the furnace chambers 18 and 1 via the connecting duct 91.
  • a transfer piece 40 leads to the heat exchanger in the furnace cover of the furnace chamber 14, ie to the last furnace chamber in the firing process
  • Exhaust air laden with pollutants is now supplied to the heat exchanger of the furnace chamber 14, which is located in the furnace cover, and is guided in the fire migration direction through all subsequent heat exchangers in the furnace covers of the furnace chambers 15 to 18 and 1 to 9 and from the heat exchanger to the first furnace chamber in the combustion process the connecting line 92 led out and Via a discharge piece 50 to a clean gas line 60 with connection point 601.
  • the pollutant-laden exhaust air is reheated up to the hottest of the fired furnace chamber 16 in the example according to FIG. 1, the temperature required for the combustion of the pollutants in the exhaust air being reached.
  • the residence time required for complete combustion of the pollutants in the exhaust air in the heat exchanger can be set, for example, via the free air-carrying cross section of the heat exchanger in which the pollutants are burned.
  • the exhaust air cleaned by burning which is also heated to a high temperature, now flows further into the heating area of the ring furnace system and releases its thermal energy via the heat exchangers to the furnace chambers.
  • the clean gas line 60 is preferably with a clean gas fan equipped and from here the exhaust air of the environment or further nachgeschaltefen cleaning stages is supplied.
  • the clean gas duct 60 is arranged between the chambers of the Ringofenaniage that it is "formed 601" with a corresponding number of 'connection "to” the to accommodate from "de n respective heat exchanger a furnace chamber discharged purified air.
  • the overlap piece 30 for the polluted exhaust air from the furnace chamber can be moved and connected to the first furnace chamber in charge of the firing process, that is, in the present example, to the furnace chamber 10 when the next fire progresses the exhaust air laden with pollutant from the ring line 20 into the heat exchanger of the last furnace chamber in the combustion process to the next last furnace chamber which is in the combustion process, namely the furnace chamber 1, can be converted. Furthermore, when the fire progresses, the discharge piece 50 for removing the cleaned exhaust air from the heat exchanger of the first furnace chamber 9 in the combustion process is to be converted into the clean gas line to the next heat exchanger of the then first furnace chamber which is in the combustion process, namely the furnace chamber 10.
  • FIG. 2 shows an example of the design of a ring furnace system according to the diagram in FIG. 1 in section AA.
  • the furnace chamber 1 has the fire chimney 82, which is connected to the flue gas duct 80 which comes from the furnace chamber 18 and through which the process air PL required for guiding the combustion process is guided into the furnace chamber 1 in the direction of the arrow.
  • the furnace chamber 1 is covered with soap on top with the furnace cover D, through which flow channels 710 lead for the exhaust air AL laden with pollutant, the exhaust air AL laden with pollutant passing through the furnace cover of the subsequent furnace chambers 2 to 9 in the same direction as the process air PL is also performed.
  • Cassette walls 83 made of shaped stones for guiding the process air and for transferring heat to the firing material are also arranged in the furnace chambers. Between the furnace covers D adjacent furnace chambers 1 and 2, connecting pieces 9ß, which are wedge-shaped, are used; which also have flow channels 900 and which connect tightly to the flow channels 710 of the furnace cover.
  • a discharge piece 50 is connected on the output side to the connecting ducts 710 carrying the exhaust air, through which the discharge air is discharged from the heat exchanger of the furnace cover and is fed to the clean gas line 60.
  • the process air AL discharged from the furnace chamber 9 and loaded with pollutant is fed to the ring line 20, as can also be seen in FIG. 4.
  • " 'The" Reihgasleitu ⁇ g' 6 '0' is "between" two rows of oven chambers arranged so that the corresponding heat exchanger of a furnace chamber can be connected from both sides Oven chamber 10, which is currently located in the envelope area, is without an oven lid.
  • FIG. 3a shows the furnace chambers 18 and 17 according to section BB according to FIG. 1, the furnace chambers in turn being equipped with flue gas ducts 80, fire chimney 82 and cassette walls 83 for guiding the process air PL. Flue gas channels 84 are also formed in the sole area.
  • the furnace chambers are in turn equipped with covers D, which are designed as heat exchangers with flow channels 710, for the passage of the exhaust air AL contaminated with pollutants.
  • FIG. 3b shows the cut-out cross section according to section BB for the furnace chambers 15 and 14, the supply of the exhaust air AL, which arrives from the furnace chamber 9 via the ring line 20, via the transfer piece 40 into the heat exchanger of the furnace cover D of the furnace chamber 14 is shown.
  • FIG. 7 shows the cross section CC according to FIG. 3b, which shows the design of the transfer piece 40 with connection to the flow channels 710 of the furnace cover D of the furnace chamber 14, which is designed as a heat exchanger, and the connection of the transfer piece 40 to the ring line 20 in the area of the connection point R 14 for the supply of the exhaust air AL coming from the furnace chamber 9.
  • FIG. 3c which shows the section BB through the furnace chamber 10
  • both the connection R 10 and R 11 for the transfer piece 40 to the ring line 20 can be seen.
  • the furnace chamber 10 is empty and without a lid and ready for reloading with firing material.
  • FIG. 5a shows the top view of a furnace cover D
  • FIG. 5b shows the side view K
  • FIG. 5c shows the cross section GG
  • FIG. 5d shows the cross section HH through the furnace cover according to FIG. 5a.
  • the furnace cover D is preferably made in a modular design and consists of at least one ceiling module 71 and two side wall modules 72.
  • the furnace cover is constructed from three ceiling modules 71, each ceiling module 71 having two mutually parallel flow channels 710, which are continuous from one side to the other.
  • the ceiling module has an essentially trapezoidal cross-section, the shorter trapezoidal side forming the upper side.
  • the fire chamber 71 1 connects to the furnace chamber.
  • the ceiling modules 71 are delimited laterally parallel to the flow channels by side modules 72, the modules are connected to one another to form the furnace cover by means of tie rods 73 as tensioning elements.
  • Each module consists of a support shell 713, which is made of a steel fiber-reinforced refractory concrete, and the flow channels 710 are incorporated into this support shell as heat exchange channels.
  • the outer skeleton of the support shells of the individual " modules " is ' for better repair '' heat insulation with a lightweight fire concrete 712.
  • circumferential grooves 717 are designed to receive a sealing cord.
  • the furnace cover has a substantially rectangular outer shape.
  • FIG. 6 again shows in detail the connection of two adjacent furnace covers D, which are connected to one another in the adjacent region by inserting a wedge-shaped connecting piece 9 into the gap formed by the trapezoidal shape of the furnace cover, the connecting piece 90 having corresponding connecting channels 900 which pass through the same is formed, which connect directly to the flow channels 710 of the furnace cover.
  • the furnace covers designed as heat exchangers for the passage of the exhaust air AL are connected to one another by the connecting piece 90, and a continuous exhaust air flow in the direction of fire migration in the ring furnace system is made possible by the furnace covers of the individual chambers designed as heat exchangers. This enables thermal, regenerative exhaust air cleaning of the process air loaded with pollutants while at the same time recovering the thermal energy and feeding it into the combustion process.

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

Abstract

L'invention concerne un procédé pour faire fonctionner un ensemble four annulaire, ainsi qu'un four annulaire qui comporte des chambres de four se présentant sous la forme d'échangeurs de chaleur pour la postcombustion, la purification des effluents gazeux et la conduite, de façon qu'elle participe au processus de combustion, de l'énergie libérée par la combustion des matières nocives.
EP03750275A 2002-08-24 2003-08-19 Procede pour faire fonctionner un ensemble four annulaire, et ensemble four annulaire Withdrawn EP1530700A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20213000U 2002-08-24
DE20213000U DE20213000U1 (de) 2002-08-24 2002-08-24 Ringofenanlage
PCT/DE2003/002762 WO2004020924A1 (fr) 2002-08-24 2003-08-19 Procede pour faire fonctionner un ensemble four annulaire, et ensemble four annulaire

Publications (1)

Publication Number Publication Date
EP1530700A1 true EP1530700A1 (fr) 2005-05-18

Family

ID=30469870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750275A Withdrawn EP1530700A1 (fr) 2002-08-24 2003-08-19 Procede pour faire fonctionner un ensemble four annulaire, et ensemble four annulaire

Country Status (3)

Country Link
EP (1) EP1530700A1 (fr)
DE (1) DE20213000U1 (fr)
WO (1) WO2004020924A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105063314B (zh) * 2015-07-27 2017-07-14 浙江尚鼎工业炉有限公司 一种高效燃气式步进炉

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE349951C (de) * 1922-03-10 Heinrich Koppers Dr Ing Kammerringofen zum Brennen von keramischen Waren, Kalk, Dolomit u. dgl.
DE857923C (de) * 1947-09-26 1952-12-04 Aluminium Ind Ag Elektrischer Mehrkammerofen zum elektrischen Brennen von Kunstkohlenkoerpern
DE2519738C2 (de) * 1975-05-02 1986-09-18 Ludwig Riedhammer GmbH, 8500 Nürnberg Verfahren zum Brennen von Kohlekörpern, wie Elektroden oder Kohlenstoffsteinen, sowie Ringofen zur Druchführung des Verfahrens
DE3119517A1 (de) * 1981-05-15 1982-12-02 Årdal og Sunndal Verk a.s., Oslo Verfahren zum brennen oder calcinieren von kohlebloecken in einem ringkammerofen unter zurueckfuehrung des rauchgases sowie eine vorrichtung zur durchfuehrung des verfahrens
EP0133842A1 (fr) * 1983-08-11 1985-03-06 Schweizerische Aluminium Ag Procédé d'exploitation d'un four annulaire à chambres pour la fabrication d'articles contenant du carbone ainsi qu'une installation à cet effet
NO174364C (no) * 1991-11-06 1994-04-20 Norsk Hydro As Anordning ved ringkammerovn
NO180215C (no) * 1995-02-10 1997-03-05 Norsk Hydro As Anordning ved mottrykksvifte i en ringkammerovn

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004020924A1 *

Also Published As

Publication number Publication date
WO2004020924A1 (fr) 2004-03-11
DE20213000U1 (de) 2004-02-19

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