EP2225492B1 - Garnissage de paroi de fours industriels - Google Patents

Garnissage de paroi de fours industriels Download PDF

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Publication number
EP2225492B1
EP2225492B1 EP08863537.0A EP08863537A EP2225492B1 EP 2225492 B1 EP2225492 B1 EP 2225492B1 EP 08863537 A EP08863537 A EP 08863537A EP 2225492 B1 EP2225492 B1 EP 2225492B1
Authority
EP
European Patent Office
Prior art keywords
wall
blocking layer
lining
layer
wearing surface
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.)
Active
Application number
EP08863537.0A
Other languages
German (de)
English (en)
Other versions
EP2225492A1 (fr
Inventor
Johannes Imle
Markus Horn
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.)
Juenger and Graeter Feuerfestbau GmbH
Original Assignee
Juenger and Graeter Feuerfestbau GmbH
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Publication date
Application filed by Juenger and Graeter Feuerfestbau GmbH filed Critical Juenger and Graeter Feuerfestbau GmbH
Publication of EP2225492A1 publication Critical patent/EP2225492A1/fr
Application granted granted Critical
Publication of EP2225492B1 publication Critical patent/EP2225492B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05001—Preventing corrosion by using special lining materials or other techniques
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05003—Details of manufacturing specially adapted for combustion chambers

Definitions

  • the invention relates to a wall lining of industrial furnaces for protecting a refractory-lined wall of concrete, steel, sheet metal or the like against corrosion, wherein the lining of the wall consists of at least three layers, a wear layer, a pressurized barrier layer and an insulating layer.
  • a wear layer is described similar to G 90 16 206 U1, which is attached by means of metal anchors to a boiler wall, wherein between the wear layer and the boiler wall a pressurized barrier layer is provided.
  • the object underlying the present invention is to protect the relevant parts of the wall lining from corrosion.
  • metallic anchors are provided with which the wear layer is attached to the wall, wherein the metallic anchors penetrate through the barrier layer and the insulating layer and are partially disposed in the wear layer and are coated with a material that at operating temperatures melts, burns, softens, shrinks, shrinks, sublimates, evaporates or fades, so that in the wear layer, a gap is formed around the respective metallic anchor into which the pressurized gas forming the barrier layer can enter and the metallic anchors in the gaps for protection can flow around before corrosion.
  • One of the layers is usually made of refractory material (stones or concretes) that are attached to the wall of concrete, steel or the like via metallic anchors or similar steel parts. Between this serving as a wear layer refractory material and the wall to be protected according to the invention a pressurized layer and an insulating layer constructed.
  • the pressurized barrier layer is disposed between the insulating layer and the wear layer, through which insulating layer the gas is directed to the barrier layer.
  • the gas used is preferably air.
  • the supply of the gas is carried out by known means, wherein the pressure supply and the control of the pressure is monitored in a known manner.
  • the metallic anchors which serve to secure the refractory material and which penetrate through the pressurized barrier layer are originally wrapped with a material which melts, burns, softens, shrinks, sublimates, evaporates or foams at operating temperatures. This material thus disappears at operating temperatures, so that the sealing gas in the pressurized layer on the Extends the area around the anchors, making the anchors even better protected against corrosion by noxious gases.
  • the pressurized barrier layer comprises porous material, e.g. a ceramic fiber or ceramic foam. It is possible that the barrier layer consists entirely of highly porous material. This ensures that on the one hand a gas-filled barrier layer is present, which prevents the corrosion attack, on the other hand, the required mechanical bond between the layers is ensured by the mechanical stability of the highly porous layer.
  • spacing cams are arranged in the gas-loaded barrier layer, which determine the distance between the layers adjacent to this barrier layer, whereby the required mechanical bond between the layers can likewise be ensured.
  • These spacer cams are preferably arranged so that the region of the metallic armatures, which are also subject to a particularly critical corrosion attack, is surrounded by sealing air.
  • ovens which have a metal jacket as a wall.
  • this metal jacket is lined with refractory material, wherein between the refractory material and the metal jacket, a pressurized barrier layer is formed, which largely prevents aggressive gases to the wall, eg the metal jacket, can get.
  • the wall 1 is made of sheet metal. This wall 1 is lined with three layers, namely with the insulating layer 2, the pressurized barrier layer 3 and the wear layer 4.
  • the wear layer 4 is made of refractory material 5, which is attached via the metal armature 6 to the wall 1. Between the layer 4 and the wall 1 is the pressurized barrier layer 3 and the insulating layer 2.
  • the pressurized barrier layer 3 is supplied via the supply 7 with gas, so that in the barrier layer 3 creates a pressure.
  • This barrier layer 3 is empty or filled with porous material and is pressurized with the added gas.
  • the spacing cam 8 are arranged, which determine the distance between the wear layer 4 and the insulating layer 2.
  • the spacer cams 8 are formed on the refractory material 5.
  • These metallic anchors 6 are coated with a material which melts, burns, softens, shrinks, shrinks at the operating temperatures sublimated, evaporated or carbonized. The material thus disappears at operating temperatures and a gap arises, so that the gas entering the barrier layer 3 flows around these metallic armatures and protects them from corrosion.
  • the furnace interior 9 is arranged above the wear layer 4.
  • the temperature is usually more than 1000 ° Celsius during operation.
  • the wall 1 adjoins the outside temperature, which is about 20 ° Celsius.
  • This temperature difference between inside and outside often causes cracks and Destruction of the refractory material 5 of the layer 4.
  • These cracks in the layer 4 it would be possible that harmful gases from the furnace interior 9 through the layers 4 and 2 pass through the wall 1 and corroded.
  • the pressure built up in the barrier layer 3 prevents the noxious gases from reaching the wall 1 through cracks in the refractory material 5 of the layer 4 and through the layers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Claims (6)

  1. Garnissage de paroi de fours industriels destiné à protéger une paroi en béton, acier, tôle ou similaire dotée d'un habillage réfractaire, le garnissage de la paroi (1) étant composé de trois couches (4 ; 3 ; 2), une couche d'usure (4), une couche barrière (3) pouvant être soumise à l'action d'une pression et une couche isolante (2) côté paroi, caractérisé en ce que des éléments d'ancrage métalliques (6) sont prévus, au moyen desquels la couche d'usure (4) est fixée à la paroi (1), les éléments d'ancrage métalliques (6) traversant la couche barrière (3) et la couche isolante (2) et étant disposés en partie dans la couche d'usure (4) et enrobés d'un matériau qui fond, brûle, ramollit, se contracte, se resserre, est sublimé, s'évapore ou se carbonise aux températures de service, de sorte que dans la couche d'usure (4), un interstice (7) est formé autour de chaque élément d'ancrage métallique (6), le gaz soumis à l'action d'une pression formant la couche barrière (3) pouvant entrer dans cet interstice et s'écouler dans les interstices (7) autour des éléments d'ancrage métalliques (6) pour fournir une protection contre la corrosion.
  2. Garnissage de paroi selon la revendication 1,
    caractérisé en ce qu'une liaison mécanique se trouve entre les couches (4; 3; 2) formant le garnissage de la paroi (1).
  3. Garnissage de paroi selon la revendication 1 ou 2,
    caractérisé en ce que
    la couche barrière (3) comporte un matériau poreux qui est soumis à l'action d'un gaz.
  4. Garnissage de paroi selon la revendication 1, 2 ou 3,
    caractérisé en ce que
    des bossages d'écartement (8) sont disposés dans la couche barrière (3), lesquels déterminent l'écart entre les couches (2 ; 4) adjacentes à cette couche barrière.
  5. Garnissage de paroi selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la couche barrière (3) est formée en tant qu'au moins une chambre fermée qui est soumise à l'action d'un gaz.
  6. Procédé de garnissage d'une paroi en béton, acier, tôle ou similaire, de fours de calcination avec un garnissage selon une des revendications 1 à 5,
    caractérisé en ce que,
    avant d'être disposés dans la couche d'usure (4), les éléments d'ancrage métalliques (6) sont enrobés d'un matériau qui fond, brûle, ramollit, se contracte, se resserre, est sublimé, s'évapore ou se carbonise aux températures de service.
EP08863537.0A 2007-12-22 2008-11-21 Garnissage de paroi de fours industriels Active EP2225492B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062450 2007-12-22
PCT/EP2008/009856 WO2009080167A1 (fr) 2007-12-22 2008-11-21 Garnissage de paroi de fours industriels

Publications (2)

Publication Number Publication Date
EP2225492A1 EP2225492A1 (fr) 2010-09-08
EP2225492B1 true EP2225492B1 (fr) 2016-01-13

Family

ID=40547574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08863537.0A Active EP2225492B1 (fr) 2007-12-22 2008-11-21 Garnissage de paroi de fours industriels

Country Status (5)

Country Link
US (1) US8944042B2 (fr)
EP (1) EP2225492B1 (fr)
JP (1) JP2011508173A (fr)
CA (1) CA2705641A1 (fr)
WO (1) WO2009080167A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201700388D0 (en) * 2017-01-10 2017-02-22 Delivita Ltd Portable oven
CN107687796B (zh) * 2017-09-28 2023-08-15 浏阳市中洲机械科技有限公司 一种安全的发声烟花筒
NL2023011B1 (en) * 2019-04-26 2020-11-02 Silicon Refractory Anchoring Systems B V A refractory anchor
JP7422119B2 (ja) * 2021-11-05 2024-01-25 中外炉工業株式会社 炉殻の内面腐食防止機構

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Also Published As

Publication number Publication date
US8944042B2 (en) 2015-02-03
CA2705641A1 (fr) 2009-07-02
WO2009080167A1 (fr) 2009-07-02
JP2011508173A (ja) 2011-03-10
US20100252018A1 (en) 2010-10-07
EP2225492A1 (fr) 2010-09-08

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