EP2502014A1 - Procédé et dispositif de fabrication d'anodes - Google Patents

Procédé et dispositif de fabrication d'anodes

Info

Publication number
EP2502014A1
EP2502014A1 EP10785014A EP10785014A EP2502014A1 EP 2502014 A1 EP2502014 A1 EP 2502014A1 EP 10785014 A EP10785014 A EP 10785014A EP 10785014 A EP10785014 A EP 10785014A EP 2502014 A1 EP2502014 A1 EP 2502014A1
Authority
EP
European Patent Office
Prior art keywords
air supply
secondary air
zone
furnace
anodes
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.)
Granted
Application number
EP10785014A
Other languages
German (de)
English (en)
Other versions
EP2502014B1 (fr
Inventor
Domenico Di Lisa
Frank Heinke
Peter Krieg
Detlef Maiwald
Hans-Peter Mnikoleiski
Wolfgang Uhrig
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.)
Innovatherm Prof Dr Leisenberg GmbH and Co KG
Original Assignee
Innovatherm Prof Dr Leisenberg GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43618773&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2502014(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Innovatherm Prof Dr Leisenberg GmbH and Co KG filed Critical Innovatherm Prof Dr Leisenberg GmbH and Co KG
Publication of EP2502014A1 publication Critical patent/EP2502014A1/fr
Application granted granted Critical
Publication of EP2502014B1 publication Critical patent/EP2502014B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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, of type in which segmental kiln moves over stationary charge
    • F27B13/02—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge of multiple-chamber type with permanent partitions; Combinations of furnaces

Definitions

  • the present invention relates to a method for producing anodes in an anode Ringo fen, comprising at least one furnace unit with a heating zone, a fire zone and a cooling zone, each having a plurality of interconnected with heating channels furnace chambers, which are designed as heat exchangers and for receiving Serving of anodes, in which for guiding air through the furnace unit by means of an air supply primary air is introduced into the cooling zone and is discharged after passing through the fire zone by means of a suction from the heating zone as a flue gas. Furthermore, the invention relates to an air supply device for an anode Ringo fen and provided with such an air supply device Anode Ringo fen.
  • the present process finds application in the production of anodes needed for fused-salt electrolysis to produce primary aluminum.
  • These anodes are made of petroleum coke with the addition of pitch as a binder in a molding process as so-called “green anodes” or "raw adenoids", the nachfo lying sintered in the molding process in an anode Ringo fen.
  • This sintering process takes place in a defined heat treatment process in which the anodes pass through three phases, namely a heating phase, a sintering phase and a cooling phase.
  • erfo lgt a heating or preheating of Rohanoden before they are heated to sintering temperatures of about 1 100 ° C after the heating phase in the combustion or fire zone.
  • heating gradient ⁇ 8 ° K / h has been in industrial practice so far refrained from producing anodes with relatively high density in so-called "o ffenen Anode Ringö fen” operated in a vacuum atmosphere without covering the furnace chamber
  • high density anodes have heretofore been fired essentially exclusively in so-called “muted” kilns, which, however, have a significantly lower efficiency compared to open anode ring furnaces.
  • the present invention is therefore based on the object of proposing a method or a device which makes it possible to produce anodes of high density with high product quality in an anodic ring furnace. This object is achieved by a method having the features of claim 1 and a device having the features of claims 9 and 13.
  • the positioning of the secondary air supply device depends on at least one Process parameter erfo lgt, so that, for example, at the beginning of Feuerzyklusses positioning of the secondary air supply as far away from the fire zone within the heating zone erfo ling, or at the end of the Feuerzyklusses a correspondingly closely spaced arrangement of the secondary air supply to the fire zone erfo lgt.
  • the process parameters for adjusting the secondary air supply can be used, for example, empirically gained insights regarding the relationship between certain process parameters and the to use adjusting heating gradient in the preheating zone.
  • the secondary air supply can fulfill the heating-up zones depending on the furnace temperature in one or more furnace chambers.
  • the secondary air supply can be performed depending on the negative pressure in the heating zone.
  • the secondary air supply is also possible to carry out the secondary air supply as a function of the cycle duration of the heat treatment of the anodes in the furnace unit, that is, as a function of the duration of the total cycle composed of the warm-up phase, the burning phase and the cooling phase.
  • a particularly immediate control of the secondary air supply is possible if the secondary air supply occurs as a function of a measured value determination for the heating gradient.
  • the air supply device according to the invention has the features of claim 9.
  • a secondary air supply device for arrangement in the heating zone.
  • the secondary air supply means of the air supply apparatus has positioning means for variably positioning the secondary air supply means in the heating zone, changes in the positioning of the secondary air supply means may be made depending on the process parameters.
  • An air supply device whose secondary air supply device is designed such that it allows an admission of multiple furnace chambers, the effectiveness of influencing the Auffilgradienten can increase even further.
  • the air supply device is constructed such that the secondary air supply device is assigned at least one measuring device which generates a measurement of a process parameter as input for a control device of the secondary air supply device, an autonomous system provided with all necessary devices can be created, for example Can be easily retrofitted to an existing Ano-Ringo fen.
  • the inventive anode Ringo fen has the features of claim 13.
  • the anode Ringo fen is provided with an air supply device, which allows the burning or sintering of high density anodes with the same productivity as the sintering of low density anodes.
  • an air supply device which allows the burning or sintering of high density anodes with the same productivity as the sintering of low density anodes.
  • FIG. 2 is an isometric partial view of that shown in FIG.
  • each furnace unit 11 has furnace chambers 12, which in FIG different number to a heating zone 13, a fire zone 14 and a cooling zone 15 are summarized.
  • the furnace chambers 12 have pits 16 which are delimited on both sides by heating channels 17 extending in the longitudinal direction of the furnace unit 11 (FIG. 1).
  • the pits 16 serve for
  • the heating channels 1 7 of the furnace chambers 12 are fluidically interconnected in the longitudinal direction of the furnace unit 1 1 by flow channels 3 1.
  • a number of different devices that are changeable in their positioning relative to the furnace chambers 12 in the direction of rotation 1 8 and - as nachfo Ling is explained - by their respective assignment, the location of the heating zone 13, Fire zone 14 and cooling zone 15 which are advanced together with the devices in the circumferential direction 1 8.
  • the furnace unit 1 1 in the fire zone 14 is provided with three burner devices 19.
  • the burner devices 19 are each associated with a furnace chamber 12, the pits 16 are populated with rawodes, which are heated by means of the burner devices 19 erfo resulting temperature exposure to about 1 100 ° C and sintered for the preparation of Schmelz bathelektro lysis anodes.
  • the anodes are not acted upon directly by the burner means 19 with temperature, but it erfo lgt a heat transfer from the guided in the heating channels 1 7 air Schukanalwandungen 20 on the arranged in the pits 16 anodes.
  • the furnace chambers 12 thus act as a heat exchanger.
  • the cooling zone 15 which in the present case comprises six furnace chambers 12, in which the raw anodes have been sintered under Hochtemperaturbeierschlagung in two previous firing phases in which the burner devices were 1 9 in the appropriate position ,
  • a primary air supply device 21 by means of which the heating channels 17 can be supplied with fresh or ambient air, is located above an outer furnace chamber 12 of the cooling zone 15.
  • Absaugein- direction 22 for the flue gases above the furnace chambers 12 are arranged, in which no ch no by the burner means 19 are subjected to high temperature, unsintered Rohanoden.
  • anode Ringo fens 10 in which the anodes are subjected to high temperature in the fire zone 14, erfo lgt simultaneously a discharge of the amount of heat stored in the anodes, which are arranged in the cooling zone 15 and have previously been acted upon by the burner devices 19 with high temperature.
  • the corresponding waste heat is fed under supply of fresh air through the primary air supply means 21 by means of arranged in the heating zone 13 suction device 23 into the heating zone 13 and serves there to preheat the anodes before they nachfo lying with the burner devices 19 are acted upon.
  • the anode Ringo fen 10 and the oven unit 1 shown as an example 1 an air supply device 23, which comprises in addition to the primary air supply means 21 arranged in the heating zone 13 secondary air feeder 24.
  • the secondary air supply device 24 is provided in the illustrated embodiment with a measuring device 25, with the process parameters, such as the temperature and / or the
  • Vacuum detected in the heating zone 13 and transmitted as input to a control device 26 of the secondary air supply device 24, which controls the introduced via the secondary air supply device 24 in the heating zone 13 Luftvo lumenstrom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)

Abstract

L'invention concerne un procédé et un dispositif d'alimentation en air pour fabriquer des anodes dans un four circulaire (10) pour anodes, qui comprend au moins une unité de four ("feu") (11) comportant une zone de chauffage (13), une zone de feu (14) et une zone de refroidissement, qui comprennent respectivement une pluralité de chambres (12) reliées les unes aux autres par des conduits de chauffage (17) et faisant office d'échangeurs de chaleur, qui servent à recevoir des anodes. Selon ledit procédé, de l'air primaire est introduit dans la zone de refroidissement pour assurer l'alimentation en air à travers l'unité de four, au moyen d'un dispositif d'alimentation en air primaire (21), et après passage à travers la zone de feu, l'air est évacué hors de la zone de chauffage sous forme de gaz de fumée au moyen d'un dispositif d'aspiration (22). Une alimentation en air secondaire est assurée dans la zone de chauffage dans la direction de l'écoulement de l'air primaire en amont du dispositif d'aspiration, au moyen d'un dispositif d'alimentation en air secondaire (24).
EP10785014.1A 2009-11-20 2010-11-15 Procédé et dispositif de fabrication d'anodes Active EP2502014B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009046937.0A DE102009046937B4 (de) 2009-11-20 2009-11-20 Verfahren und Vorrichtung zur Herstellung von Anoden
PCT/EP2010/067512 WO2011061159A1 (fr) 2009-11-20 2010-11-15 Procédé et dispositif de fabrication d'anodes

Publications (2)

Publication Number Publication Date
EP2502014A1 true EP2502014A1 (fr) 2012-09-26
EP2502014B1 EP2502014B1 (fr) 2020-04-29

Family

ID=43618773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10785014.1A Active EP2502014B1 (fr) 2009-11-20 2010-11-15 Procédé et dispositif de fabrication d'anodes

Country Status (6)

Country Link
US (1) US9328960B2 (fr)
EP (1) EP2502014B1 (fr)
AU (1) AU2010320998B2 (fr)
CA (1) CA2780844C (fr)
DE (1) DE102009046937B4 (fr)
WO (1) WO2011061159A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110617712A (zh) * 2019-10-20 2019-12-27 单系夫 一种炭素原料回转煅烧方法和装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010128226A1 (fr) 2009-06-15 2010-11-11 Alcan International Limited Procede de regulation d'un four de cuisson d'anodes et four adapte a sa mise en oeuvre

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330164A (en) * 1918-01-22 1920-02-10 Aluminum Co Of America Ring-furnace
DE2008206C3 (de) 1970-02-21 1974-05-02 Sigri Elektrographit Gmbh Verfahren zum Brennen von Kohlenstoff-Formkörpern in Kammerringöfen
DE2010372B2 (de) 1970-03-05 1976-11-04 Sigri Elektrographit Gmbh, 8901 Meitingen Verfahren zum brennen von kohlenstoff-formkoerpern in kammerringoefen
US4253823A (en) * 1979-05-17 1981-03-03 Alcan Research & Development Limited Procedure and apparatus for baking carbon bodies
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
US4382778A (en) * 1981-09-04 1983-05-10 Noranda Mines Limited Method and apparatus for reducing excess air inleakage into an open ring-type carbon baking furnace
FR2515799B1 (fr) * 1981-10-29 1986-04-04 Pechiney Aluminium Dispositif de chauffage pour fours de cuisson ouverts a feu tournant et procede de mise en oeuvre de ce dispositif
US4687439A (en) * 1986-02-28 1987-08-18 Aluminum Company Of America & Delta Refractories, Inc. Furnaces for baking anodes
ES2010215B3 (es) * 1986-06-17 1989-11-01 Pechiney Aluminium Dispositivo y procedimiento de optimizacion de la combustion en los hornos con camaras para la coccion de bloques carbonados.
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
CH695870A5 (de) 2002-09-23 2006-09-29 R & D Carbon Ltd Optimierung der Pechdampfverbrennung in einem Brennofen für Kohlenstoffelektroden.
FR2918164B1 (fr) * 2007-06-29 2009-09-25 Solios Environnement Sa Procede de surveillance d'un conduit des fumees reliant un four de cuisson de blocs carbones a un centre de traitement des fumees
CA2699825C (fr) * 2007-09-18 2014-06-17 Wolfgang Leisenberg Procede et dispositif de recuperation de chaleur
US9970710B2 (en) * 2012-06-15 2018-05-15 Fluor Technologies Corporation Carbon baking heat recovery ring furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010128226A1 (fr) 2009-06-15 2010-11-11 Alcan International Limited Procede de regulation d'un four de cuisson d'anodes et four adapte a sa mise en oeuvre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011061159A1

Also Published As

Publication number Publication date
DE102009046937A1 (de) 2011-05-26
US20120295208A1 (en) 2012-11-22
US9328960B2 (en) 2016-05-03
CA2780844A1 (fr) 2011-05-26
EP2502014B1 (fr) 2020-04-29
DE102009046937B4 (de) 2019-12-05
AU2010320998B2 (en) 2014-08-07
CA2780844C (fr) 2018-06-05
AU2010320998A1 (en) 2012-06-14
WO2011061159A1 (fr) 2011-05-26

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