US20070234939A1 - Refractory body - Google Patents

Refractory body Download PDF

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Publication number
US20070234939A1
US20070234939A1 US10/596,676 US59667604A US2007234939A1 US 20070234939 A1 US20070234939 A1 US 20070234939A1 US 59667604 A US59667604 A US 59667604A US 2007234939 A1 US2007234939 A1 US 2007234939A1
Authority
US
United States
Prior art keywords
groove
heat protection
protection body
rear side
cross
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.)
Abandoned
Application number
US10/596,676
Other languages
English (en)
Inventor
Stephan Mulch
Jurgen Schmitz
Stefan Metze
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.)
Saint Gobain IndustrieKeramik Roedental GmbH
Original Assignee
Saint Gobain IndustrieKeramik Duesseldorf GmbH
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 Saint Gobain IndustrieKeramik Duesseldorf GmbH filed Critical Saint Gobain IndustrieKeramik Duesseldorf GmbH
Assigned to SAINT-GOBAIN INDUSTRIEKERAMIK DUSSELDORF GMBH reassignment SAINT-GOBAIN INDUSTRIEKERAMIK DUSSELDORF GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MULCH, STEPHAN, METZE, STEFAN, SCHMITZ, JURGEN
Publication of US20070234939A1 publication Critical patent/US20070234939A1/en
Abandoned 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
    • F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
    • 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
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
    • 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
    • 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
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements

Definitions

  • the invention relates to a heat protection body for a furnace inner wall, with a front side, a rear side, and the peripheral sides connecting the front side and the rear side, as well as a protection system for a boiler tube wall with at least one retaining element projecting from the boiler tube wall and at least one heat protection body held by the retaining element.
  • the inner walls of furnaces are clad with heat protection bodies of this kind to protect them from overheating such as would damage the material.
  • the mostly plate-shaped heat protection bodies have on their rear side, facing the furnace wall, a cut-out or aperture in the form of a hole or groove, into which engages a retaining element secured to the furnace wall, as a result of which the heat protection body is anchored to the furnace wall.
  • these bodies are coated on the rear side with a heat-conductive filler material, such as mortar, wherein the aperture into which the retaining element engages is completely filled with mortar.
  • this cavity can also be cast with concrete, for example.
  • a tile-shaped heat protection body for the refractory cladding of a furnace, in particular for the cladding of a heat exchanger.
  • the body has in its rear side, facing the boiler tube wall, an open groove, wherein the groove comprises two cut-outs in its longitudinal direction, ie a cut-out with rectangular cross-section on the peripheral side and a second cut-out with T-shaped cross-section adjacent to this longitudinally.
  • the heat protection tile is placed onto the T-shaped retaining element so that this engages into the groove cut-out with rectangular cross-section on the peripheral side.
  • the heat protection tile is then pushed relative to the retaining element as far as the stop defined by the inner groove end, wherein the retaining element engages in the T-shaped groove cut-out and fixes the tile securely to the boiler tube wall.
  • the tile is coated on its rear side with a heat-conductive mortar. In this situation, the volume enclosed by the groove is additionally completely filled with mortar to produce a heat bridge with the largest possible surface.
  • a heat protection body for a protection system for a furnace inner wall with a front side, a rear side, and the peripheral sides connecting the front side and the rear side,
  • the heat protection body according to the invention has a groove with a cross-section which broadens in the direction of the front side.
  • This groove serves to accommodate a retaining element connecting to the boiler tube wall, which in turn is to be shaped in such a way that it broadens in the direction of its projecting end to correspond to the shape of the groove cross-section, so that a connection free of play is provided between the heat protection body and the boiler tube wall.
  • the groove has a first face-side end open to a peripheral side and a second face-side end located in the interior of the rear side.
  • the second end of the groove is arranged at any desired distance from one of the peripheral sides of the heat protection body, so that it can form a stop for the retaining element which is to be inserted.
  • this is pushed over the face side of the groove, open to one of the peripheral sides, onto the free end of the retaining element as far as the stop defined by the other end of the groove, wherein the end of the retaining element connected to the wall is guided along the opening surface of the groove.
  • the particular advantage of the shape of the groove cross-section selected according to the invention lies in the fact that the surface of the groove open to the rear side of the heat protection body can be designed as very narrow, practically slit-shaped, so that the heat-conductive filler material located in the groove, preferably mortar or concrete, has practically no possibility at the rear side of falling out of the groove or flowing to it.
  • the retaining element in turn is protected completely by the heat protection body from the flue gas of the furnace.
  • the heat protection body is designed as a plate-shape.
  • This shape allows for a defined large-surface front side and rear side, which are connected to one another by peripheral sides designed to be narrow. This guarantees an effective heat protection of the furnace wall and long service life of the heat protection body.
  • the appropriate shaping of the front side and rear side respectively for example with heat protection bodies designed as rectangular or square in shape, extended furnace walls can be clad over large areas by a plurality of heat protection bodies.
  • the cross-section of the groove can be designed in various ways.
  • the groove cross-section can be designed in various ways.
  • the groove cross-section could, for example, have a T-shaped cross-section.
  • the groove cross-section could, for example, have a trapezoidal or dove-tailed cross-section.
  • This has technical production advantages in particular, since in this case a core which is introduced into the source material during the production of the heat protection body can be more easily removed again from the finished manufactured heat protection body.
  • This shaping also facilitates the introduction of the retaining element into the groove, since this still has relatively large play at the open face side of the groove and in the course of the heat protection body being pushed onto the retaining element it gradually adopts its defined position in the groove.
  • this is expedient for this to be manufactured from a ceramic material, preferably from silicon carbide.
  • At least one peripheral side has a step running essentially parallel to the front side.
  • the heat protection body serves not only as a heat resistant cladding of a furnace inner wall, but additionally as the means of heat dissipation into a heat exchanger, such as, for example, in the case of a boiler tube wall, the best possible heat transfer from the heat protection body into the rear side wall is to be striven for.
  • the heat protection body should be located as tight against the wall as possible, or any gap which might exist between the heat protection body and the wall should be designed to be as narrow as possible. This can be achieved by the rear side being shaped to the outer contour of the furnace wall.
  • the decisive factor is the matching of the geometries of the groove cross-section and of the retaining element.
  • the retaining element has a free end corresponding to the cross-section of the groove. This means specifically, that in the case of a groove designed in a T-shape, for example, the retaining element is designed accordingly as a T-anchor.
  • the retaining element is preferably located at tube fins which are arranged between the tubes of the boiler tube wall.
  • the longitudinal axis of the retaining element is arranged perpendicular to the surface of the boiler tube wall, in particular the tube fins.
  • the advantages of the invention are achieved with protection systems which have only one heat protection body.
  • a boiler tube wall is protected by a wall of heat protection bodies arranged above and next to one another.
  • the advantages according to the invention are achieved in particular if all the heat protection bodies of the protection system are secured to the boiler tube wall in accordance with the principle according to the invention.
  • the heat protection bodies can be placed directly, without any substantial gap, on and next to one another, but can also be placed with a gap.
  • the gap between the heat protection bodies and the gap between each heat protection body and the boiler tube wall are in this situation for logical reasons filled with a filling material, in particular mortar and joint expansion material, in order to optimise the heat transfer and improve the protection against flue gas.
  • FIG. 1 A protection system for a boiler tube wall, in which the boiler tube wall is partially clad with heat protection bodies in a perspective view,
  • FIG. 2 An enlarged extract from FIG. 1 corresponding to the line II from Fig.1 ,
  • FIG. 3 A heat protection body of the protection system from FIG. 1 in a perspective view of the rear side of the body,
  • FIG. 4 The rear side of the heat protection body of the protection system from FIG. 1 in a plan view
  • FIG. 5 A side sectional view of the heat protection body of the protection system from FIG. 1 along the line V-V from FIG. 3 ,
  • FIG. 6 A side section view, rotated through 90° of the heat protection body of the protection system from FIG. 1 along the line IV-IV from FIG. 3 .
  • the protection system from FIG. 1 comprises a boiler tube wall 1 , which is clad on the furnace side with heat protection bodies 5 , wherein the boiler tube wall 1 in the present case, for ease of overview, is clad only partially with heat protection bodies 5 .
  • the boiler tube wall 1 itself consists of parallel tubes 2 and the tube fins 3 , connecting the tubes pair by pair in web fashion.
  • the heat protection bodies 5 are in each case secured to the boiler tube wall 1 by means of the T-shaped retaining elements 4 welded to the tube fins 3 , as is explained in detail hereinafter.
  • Each heat protection body 5 is designed as a square plate and comprises a front side 7 , a rear side 8 located opposite the front side 7 , and the peripheral sides 11 , 12 , 13 , 14 , connecting the front side 7 to the rear side 8 and standing perpendicular to them.
  • Other geometries are likewise possible, such as, for example, regular hexagons, by which the wall can be clad in honeycomb fashion.
  • the heat protection body 5 consists at least on its front side 7 , facing the flue gases of the furnace, of a heat-resistant ceramic material, preferably silicon carbide.
  • the heat protection body 5 On its rear side 8 , the heat protection body 5 has a groove 6 for accommodating the retaining element 4 , wherein the groove 6 comprises a first face-side end 6 a , open to the peripheral side 14 , and a second face-side end 6 b located in the interior of the rear side 8 .
  • the groove 6 further has a cross-section which broadens in the direction of the front side 7 . In this present case, it is designed as a T-shape, so that an optimum bedding of the T-shaped retaining element 4 in the groove 6 is guaranteed.
  • the groove can equally well have a cross-section which broadens constantly in the direction of the front side, for example in the shape of a trapezoid, wherein in this case the retaining element has a corresponding shape.
  • the rear side 8 of the heat protection body 5 is, as represented in FIG. 3 , adapted to the shape of the boiler tube wall 1 . It therefore has semi-cylindrical areas 9 for the tubes 2 , as well as a flat surface 10 located between, which in the secured state of the heat protection body 5 is located opposite the tube fins 3 arranged between the tubes 2 .
  • the T-shaped retaining element 4 is introduced into the groove 6 via its open end 6 a , and the heat protection body 5 is then pushed relative to the fixed-location retaining element 4 until it comes into contact with the face-side end 6 b of the groove 6 located in the interior of the rear side 7 .
  • the introduction of the retaining element 4 into the groove 6 is also facilitated by the fact that the groove cross-section tapers in the longitudinal direction of the groove 6 from the open end 6 a in the direction of the inner end 6 b . In the present case this is realised in that the inner faces 6 c of the groove delimiting the longitudinal sides of the transverse braces 4 a (see FIG.
  • the retaining element 4 On being introduced into the groove 6 , the retaining element 4 , therefore, still has a relatively large amount of play at the open face side 6 a of the groove 6 , wherein, when the heat protection body 5 is being pushed on, it gradually adopts a defined position in the groove 6 transverse to its course.
  • the narrow gaps between the individual heat protection bodies 5 and the boiler rear wall 1 , and the gap between the individual heat protection bodies 5 are filled with a filler material, in particular with mortar, concrete, and/or expansion joint material.
  • each heat protection body 5 is filled completely with the filler material, wherein the mortar layer is not represented in FIGS. 1 and 2 for reasons of easier overview.
  • a particular advantage of the heat protection bodies 5 according to the invention in this case lies in the fact that, because of the very small, practically slit-shaped opening surface of the groove 6 , the mortar in the groove 6 has practically no possibility of falling out at the rear side, wherein air inclusions would be formed, which in turn would lead to local overheating of the material. Due to the end 6 a of the groove 6 , open on the peripheral side, the filler material also can only emerge with difficulty.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US10/596,676 2003-12-22 2004-11-15 Refractory body Abandoned US20070234939A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10361104A DE10361104B4 (de) 2003-12-22 2003-12-22 Hitzeschutzkörper
DE10361104.5 2003-12-22
PCT/EP2004/012914 WO2005064255A1 (de) 2003-12-22 2004-11-15 Hitzeschutzkörper

Publications (1)

Publication Number Publication Date
US20070234939A1 true US20070234939A1 (en) 2007-10-11

Family

ID=34706551

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/596,676 Abandoned US20070234939A1 (en) 2003-12-22 2004-11-15 Refractory body

Country Status (5)

Country Link
US (1) US20070234939A1 (enExample)
EP (1) EP1697691A1 (enExample)
JP (1) JP4988356B2 (enExample)
DE (2) DE10361104B4 (enExample)
WO (1) WO2005064255A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3627052A1 (en) * 2014-06-06 2020-03-25 HKH Development B.V. Combination of a refactory lining and a tube wall for an incinerator
US11022342B2 (en) * 2018-06-26 2021-06-01 Noritz Corporation Heat exchanger and water heater including same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005018131U1 (de) * 2005-11-17 2006-01-26 Karrena Gmbh Feuerfester Formstein
DK1867924T3 (da) * 2006-06-13 2009-01-12 Mella & Menzi Ag Rörbeskyttelsesplade af et brandbestandigt materiale samt en vægbeklædning til en affaldsforbrændingsovn
US8272321B1 (en) * 2007-12-20 2012-09-25 Capital Cooking Equipment, Inc. Rotisserie for oven
DE102009039390A1 (de) 2009-08-31 2011-03-03 Saint-Gobain Industriekeramik Düsseldorf Gmbh Korrosionsschutzkörper
DE202009018820U1 (de) 2009-08-31 2013-10-10 Saint-Gobain Industriekeramik Rödental GmbH Schutzsystem für eine Ofeninnenwand
DE102010018648A1 (de) * 2010-04-28 2011-11-03 Saint-Gobain Industriekeramik Düsseldorf Gmbh Korrosionsschutzkörper und Schutzsystem für eine Ofeninnenwand
KR101387057B1 (ko) 2013-10-23 2014-04-18 금성이엠씨 주식회사 소각로 보일러용 수관 보호 장치 및 방법
JP6221186B2 (ja) * 2015-12-09 2017-11-01 三菱重工環境・化学エンジニアリング株式会社 水管保護用耐火物
JP2022150907A (ja) * 2021-03-26 2022-10-07 日本碍子株式会社 耐火タイル及び保護用耐火タイルシステム

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Publication number Priority date Publication date Assignee Title
US1868352A (en) * 1929-05-04 1932-07-19 Detrick M H Co Furnace construction
US2606017A (en) * 1949-02-05 1952-08-05 Levi S Longenecker Furnace roof and wall structure
US5243801A (en) * 1992-02-20 1993-09-14 The Babcock & Wilcox Company Refractory tile for heat exchanger protection
US5673527A (en) * 1995-09-05 1997-10-07 Zampell Advanced Refractory Technologies, Inc. Refractory tile, mounting device, and method for mounting
US6012401A (en) * 1996-08-07 2000-01-11 Mitsubishi Heavy Industries, Ltd. Water pipe protecting refractory structure
US6550208B2 (en) * 1997-09-05 2003-04-22 Lakdas Nanayakkara Constructional components for use in a wall structure
US6952905B2 (en) * 2003-02-03 2005-10-11 Nickel Richard N Stone panel connector

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SE506495C2 (sv) * 1990-09-14 1997-12-22 Abb Carbon Ab Infodring
JP3100077B2 (ja) * 1991-08-05 2000-10-16 積水ハウス株式会社 軸組への取付手段を備えた外壁パネル
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
AU3630600A (en) * 1999-03-19 2000-10-09 Saint-Gobain Ceramics And Plastics, Inc. Refractory tile system for boiler tube/heat exchanger protection
JP2000320067A (ja) * 1999-05-13 2000-11-21 Tateyama Alum Ind Co Ltd 壁面パネル
JP2001272175A (ja) * 2000-03-29 2001-10-05 Meisei Ind Co Ltd 耐火材の取付構造及び取付方法
JP2002295802A (ja) * 2001-03-29 2002-10-09 Hitachi Zosen Corp 耐火タイルの固定構造
KR100517065B1 (ko) 2003-12-11 2005-09-26 씨제이 주식회사 고농도 고수율의 젖산을 생산하는 젖산균과 이를 이용한 젖산 생산방법

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1868352A (en) * 1929-05-04 1932-07-19 Detrick M H Co Furnace construction
US2606017A (en) * 1949-02-05 1952-08-05 Levi S Longenecker Furnace roof and wall structure
US5243801A (en) * 1992-02-20 1993-09-14 The Babcock & Wilcox Company Refractory tile for heat exchanger protection
US5673527A (en) * 1995-09-05 1997-10-07 Zampell Advanced Refractory Technologies, Inc. Refractory tile, mounting device, and method for mounting
US6012401A (en) * 1996-08-07 2000-01-11 Mitsubishi Heavy Industries, Ltd. Water pipe protecting refractory structure
US6550208B2 (en) * 1997-09-05 2003-04-22 Lakdas Nanayakkara Constructional components for use in a wall structure
US6952905B2 (en) * 2003-02-03 2005-10-11 Nickel Richard N Stone panel connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3627052A1 (en) * 2014-06-06 2020-03-25 HKH Development B.V. Combination of a refactory lining and a tube wall for an incinerator
US11022342B2 (en) * 2018-06-26 2021-06-01 Noritz Corporation Heat exchanger and water heater including same

Also Published As

Publication number Publication date
DE202004020565U1 (de) 2005-08-11
JP2007515614A (ja) 2007-06-14
EP1697691A1 (de) 2006-09-06
DE10361104B4 (de) 2005-10-06
WO2005064255A1 (de) 2005-07-14
JP4988356B2 (ja) 2012-08-01
DE10361104A1 (de) 2005-07-28

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AS Assignment

Owner name: SAINT-GOBAIN INDUSTRIEKERAMIK DUSSELDORF GMBH, GER

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MULCH, STEPHAN;SCHMITZ, JURGEN;METZE, STEFAN;REEL/FRAME:018885/0851;SIGNING DATES FROM 20060703 TO 20060710

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION