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EP0635678A1 - Garnissage réfractaire pour parois et briques profilée pour celui-ci - Google Patents

Garnissage réfractaire pour parois et briques profilée pour celui-ci Download PDF

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Publication number
EP0635678A1
EP0635678A1 EP94103545A EP94103545A EP0635678A1 EP 0635678 A1 EP0635678 A1 EP 0635678A1 EP 94103545 A EP94103545 A EP 94103545A EP 94103545 A EP94103545 A EP 94103545A EP 0635678 A1 EP0635678 A1 EP 0635678A1
Authority
EP
European Patent Office
Prior art keywords
wall
shaped
refractory lining
shaped blocks
bevels
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
EP94103545A
Other languages
German (de)
English (en)
Inventor
Stephan Mulch
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.)
MULCH, STEPHAN
Original Assignee
Didier Werke AG
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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0635678A1 publication Critical patent/EP0635678A1/fr
Ceased legal-status Critical Current

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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
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/107—Protection of water tubes
    • F22B37/108—Protection of water tube 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
    • F23M5/04—Supports for linings
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
    • F27D2009/0032—Cooling of furnaces the cooling medium passing through a pattern of tubes integrated with refractories in a panel

Definitions

  • the invention relates to a refractory lining of walls of a combustion chamber with shaped stones.
  • the invention relates to a refractory molded block therefor.
  • DE 41 15 714 A1 describes a refractory lining of a wall carrying heat exchanger tubes. Such linings are provided, for example, in the combustion chamber of waste incineration plants. The lining is intended to protect the pipes from corrosion.
  • each molded block has an opening at a central point, at which it can be fastened to a screw bolt of the wall. If the screw connection is tightened too tightly, damage, especially cracks, can occur to the molded blocks. If the screws are not tightened sufficiently, the desired heat transfer from the molded block to the pipes is not guaranteed.
  • DE 40 07 662 C1 describes an anchoring device for shaped stones. There tabs are provided between stones, into which stone holders engaging in two adjacent stones are to be inserted and cast. This type of attachment appears expensive. The potting compound can loosen during operation so that the stones detach from the pipes. This worsens the heat transfer between the stones and the pipes.
  • the object of the invention is to propose a refractory lining and a molded block for this purpose, the assembly and the fastening of the molded blocks being improved.
  • the above object is achieved in the case of a refractory lining of the type mentioned at the outset in that the shaped blocks are each provided with bevels on two opposite edges which form acute angles with the wall-side surface of the shaped block and in that a wedge-shaped strip is inserted between the bevels of adjacent shaped blocks which tapers to the wall, which lies against the slopes and which, when attached to the wall, holds the shaped blocks on the wall.
  • the wedge-shaped bar interacting with the bevels ensures that the holding force is transmitted to the shaped blocks over a comparatively large area. A loosening or loosening of the shaped stones in the company is not expected. Since the attachment takes place without the provision of a potting compound, it cannot break out. Even if the bar is firmly tightened against the wall, there is no damage to the molded blocks.
  • the wedge-shaped bar also compensates for any tolerances of the shaped stones. There are no paths between the molding and the sloping stones, in which the heat radiation or combustion gases could hit the wall directly.
  • Recesses are provided on the wall-side surface of the shaped blocks for heat exchanger tubes arranged on the wall.
  • the shaped stones are pressed against the tubes at their recesses by means of the strips. This ensures good heat transfer between the shaped blocks and the tubes. Since the shaped stones do not loosen during operation, the heat transfer remains in operation.
  • steps are formed on the two other opposite edges of the shaped stones, the steps of two adjacent shaped stones interlocking. As a result, there is no open radiation path at these edges, on which the atmosphere of the combustion chamber can directly affect the wall or the tubes.
  • a good heat-conducting refractory putty or mortar can be inserted between the shaped blocks and the wall and / or the strips and the wall, which improves the heat transfer and compensates for any existing manufacturing tolerances. Due to the proposed type of fastening, it is possible to connect shaped stones, mortar and wall "up” by moving the shaped stones up and down and to avoid air pockets, which improves the heat transfer.
  • a refractory molded block for a lining of the type mentioned is characterized in that the molded block is provided with bevels on two opposite edges, the bevels forming acute angles with the wall-side surface of the molded block.
  • Tubes (2) made of steel are arranged on a wall (1) and are connected via metallic wall parts (3).
  • Shaped stones (5) are provided to shield the wall (1), in particular the tubes (2), from a firing chamber (4).
  • the shaped blocks (5) have recesses (7) for the tubes (2) on their wall-side surface (6). There is good heat transfer between the recesses (7) and the tubes (2) and the wall-side surface (6) and the wall parts (3).
  • the two opposite edges (8, 9) of the shaped blocks (5) are designed as bevels, the bevels (10) each forming an acute angle (a) with the wall-side surface (6).
  • the two other edges (11, 12) of the shaped stones (5) are provided with steps (13) which are designed so that the edges (11, 12) of shaped stones arranged one above the other engage one another. In Fig. 3, these gradations can be seen in the bar described below.
  • a wedge-shaped bar (14) is arranged between the bevels (10) of the edges (8, 9) of adjacent shaped stones.
  • the strip (14) consists of refractory ceramic material.
  • the strip (14) forms inclined surfaces (15) corresponding to the bevels (10).
  • the inclined surfaces (15) lie flush against the inclined surfaces (10).
  • the strip (14) is approximately aligned with the combustion chamber-side surfaces (16) of the shaped blocks (5).
  • the height of the bar (14) is the same as the height of the shaped blocks (5) (see Fig. 1, Fig. 3).
  • the bar (14) thus covers the entire space between the slopes (10).
  • the steps (13) of the edges (11, 12) corresponding steps (17) are provided at the top and bottom (see Fig. 3).
  • the height of the bar (14) could, however, also be a multiple of the height of the shaped blocks (5).
  • a threaded bolt (18) is welded to the wall part (3) to fasten each strip (14).
  • a spacer sleeve (19) is placed on this.
  • the threaded bolt (18) extends through an opening (20) in the bar (14) and ends in a recess (21) in the bar (14).
  • a nut (22) screwed onto the threaded bolt (18) which presses on the bottom (24) of the recess (21) by means of a washer (23).
  • the contact area between the strips (14) and the shaped stones (5) is comparatively large, so that the necessary pressure force is distributed over a large area. Since the strips (14) occupy the entire space between the bevels of the edges (8,9) and are pressed against the bevels (10), there are no open radiation paths on which the atmosphere of the firebox (4) directly onto the wall parts (3 ) can act.
  • the thickness (d) of the bar (14) is at least half as large as the thickness (D) of the shaped blocks (5).
  • the inclined surfaces (15) of the strip (14) engage correspondingly deep into the space between the inclines (10). This means that a comparatively large contact area is achieved not only in terms of height, but also in depth.
  • the thickness (d) of the strips (14) can also be almost as large as the thickness (D) of the shaped blocks (5).
  • a refractory mortar or putty (not shown in the figures) can additionally be applied between the shaped blocks (5) and the wall (1) and / or the strips (14) and the wall (1).
  • depressions (21) may be closed with a suitable agent (mortar, putty, sealing caps).
  • strips made of a refractory material other than ceramic are used, it may be advantageous to place the strips (14) somewhat deeper between the shaped blocks (5) and then cover the surface of the strips on the firebox side with a suitable refractory mortar or putty.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP94103545A 1993-07-21 1994-03-09 Garnissage réfractaire pour parois et briques profilée pour celui-ci Ceased EP0635678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4324423 1993-07-21
DE19934324423 DE4324423C1 (de) 1993-07-21 1993-07-21 Feuerfeste Auskleidung von Wänden und Formstein hierfür

Publications (1)

Publication Number Publication Date
EP0635678A1 true EP0635678A1 (fr) 1995-01-25

Family

ID=6493328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103545A Ceased EP0635678A1 (fr) 1993-07-21 1994-03-09 Garnissage réfractaire pour parois et briques profilée pour celui-ci

Country Status (2)

Country Link
EP (1) EP0635678A1 (fr)
DE (1) DE4324423C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9321690B2 (en) 2008-02-08 2016-04-26 Saint-Gobain Centre De Recherches Et D'etudes Europeen Sintered refractory material based on silicon carbide with a silicon nitride binder

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504758U1 (de) * 1995-03-21 1995-05-18 Carborundum Deutschland GmbH, 40597 Düsseldorf Schraubbefestigung für keramische Platten
US5673527A (en) * 1995-09-05 1997-10-07 Zampell Advanced Refractory Technologies, Inc. Refractory tile, mounting device, and method for mounting
DE19638711A1 (de) * 1996-09-21 1998-03-26 Karrena Gmbh Feuerfeste Verkleidung für etwa waagrecht verlaufende Rohre
DE19645390C2 (de) * 1996-11-04 2000-01-13 Metallgesellschaft Ag Mittel- oder Hochdruckwärmetauscher mit einer wärmedämmenden Verkleidung
WO1998053262A1 (fr) * 1997-05-22 1998-11-26 Cobb Refractories Ltd Construction monolithique realisee a l'aide de blocs d'arret d'extremite prefabriques
DE19733998B4 (de) * 1997-08-06 2006-01-26 Karrena Gmbh Formsteine für die Auskleidung eines Feuerungsraumes und Feuerungsrauminnenwand
FR2785374B1 (fr) * 1998-10-30 2001-01-19 Lafarge Refractaires Monolithi Revetement et procede de garnissage d'une paroi d'un appareil thermique et brique et ancrage associes
DE202005018131U1 (de) * 2005-11-17 2006-01-26 Karrena Gmbh Feuerfester Formstein
DE102009024128B3 (de) * 2009-06-06 2010-09-16 Ooms-Ittner-Hof Gmbh Feuerfeste Platte für eine Rohrwandverkleidung
EP2818816B9 (fr) * 2013-06-28 2016-10-05 Refractory Intellectual Property GmbH & Co. KG Panneau de refroidissement multicouche et four électrique à arc

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB360549A (en) * 1930-05-21 1931-11-12 American Eng Co Ltd Improvements in fluid-cooled furnace walls
GB362342A (en) * 1930-04-17 1931-11-26 American Eng Co Ltd Improvements in protective blocks for the tubes of fluidcooled furnace walls
US3838665A (en) * 1972-06-19 1974-10-01 Goetaverken Angteknik Ab Furnace wall containing spaced, parallel water tubes and blocks mounted thereon
GB1591331A (en) * 1978-05-26 1981-06-17 Wfj Refractories Ltd Constructional blocks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714752A1 (de) * 1987-05-02 1988-11-17 Plibrico Co Gmbh Gurtgewoelbe fuer industrieoefen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB362342A (en) * 1930-04-17 1931-11-26 American Eng Co Ltd Improvements in protective blocks for the tubes of fluidcooled furnace walls
GB360549A (en) * 1930-05-21 1931-11-12 American Eng Co Ltd Improvements in fluid-cooled furnace walls
US3838665A (en) * 1972-06-19 1974-10-01 Goetaverken Angteknik Ab Furnace wall containing spaced, parallel water tubes and blocks mounted thereon
GB1591331A (en) * 1978-05-26 1981-06-17 Wfj Refractories Ltd Constructional blocks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9321690B2 (en) 2008-02-08 2016-04-26 Saint-Gobain Centre De Recherches Et D'etudes Europeen Sintered refractory material based on silicon carbide with a silicon nitride binder

Also Published As

Publication number Publication date
DE4324423C1 (de) 1994-04-28

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