EP1831630A1 - Corps de protection contre la chaleur destine a un systeme de protection pour une paroi interieure d'un four - Google Patents

Corps de protection contre la chaleur destine a un systeme de protection pour une paroi interieure d'un four

Info

Publication number
EP1831630A1
EP1831630A1 EP05846523A EP05846523A EP1831630A1 EP 1831630 A1 EP1831630 A1 EP 1831630A1 EP 05846523 A EP05846523 A EP 05846523A EP 05846523 A EP05846523 A EP 05846523A EP 1831630 A1 EP1831630 A1 EP 1831630A1
Authority
EP
European Patent Office
Prior art keywords
heat protection
protection body
boiler tube
ceramic layer
tube wall
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Withdrawn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
EP05846523A
Other languages
German (de)
English (en)
Inventor
Stephan Mulch
Joachim Meurer
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 Roedental GmbH
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 Roedental GmbH, Saint Gobain IndustrieKeramik Duesseldorf GmbH filed Critical Saint Gobain IndustrieKeramik Roedental GmbH
Publication of EP1831630A1 publication Critical patent/EP1831630A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • 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
    • 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
    • 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
    • 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
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1621—Making linings by using shaped elements, e.g. bricks
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49623—Static structure, e.g., a building component

Definitions

  • the invention relates to a heat protection body for a protection system for a furnace inner wall. Furthermore, the invention relates to a protection system for a boiler tube wall and a method for producing such a protection system.
  • the inner walls of industrial furnaces must be protected by special protection systems from the very hot and corrosive combustion gases.
  • the furnace inner wall is formed as a Kesseirohrwand.
  • the boiler tube wall is coated with a ceramic mass, for example silicon carbide.
  • steel pins are welded to the tubes at regular intervals, which protrude into the ceramic layer, and thus cause a clamping between the boiler tube wall and the layer.
  • the boiler tube wall is covered by pipe protection plates.
  • the pipe protection plates are held by projecting from the Kesseirohrwand holding elements which engage in corresponding molded into the back of the pipe protection plates recesses or grooves, individually.
  • the space between the boiler tube wall and the pipe protection plates is back-filled with a ceramic-monolithic filling material, for example mortar or silicon carbide.
  • the present invention seeks to provide a heat protection body, which is characterized by a long service life, is inexpensive to manufacture and can be easily mounted on a boiler tube wall. It is another object of the invention to provide an effective protection system for a boiler tube wall and an easy to implement method for mounting a protection system for a boiler tube wall.
  • the first object is achieved with a heat protection body for a protection system for a furnace inner wall having a front side, a back side and the front side connecting the front side edge sides, that the heat protection body has on its back at least one holding element, which consists of the same or a similar material the heat protection body is made.
  • the heat protection body according to the invention is characterized by a very simple structure. Since a rear recess or groove for receiving a retaining element in the heat protection body according to the invention does not have to be provided, the heat protection body can be made relatively thin-walled and thus easy. By means of the formed on the back of the heat protection body at least one holding element, this can be easily anchored in a layer to be protected on the furnace inner wall, such as a boiler tube wall, applied layer.
  • the heat protection body and the retaining element according to the invention are made of the same material, ie have the same thermal and / or mechanical properties. As a result, thermal stresses as a result of different thermal expansion coefficients can not occur at the transition between the heat protection body and the retaining element. This contributes significantly to the longevity of the heat protection body according to the invention.
  • the heat protection body and the holding element are integrally formed.
  • the entire heat protection body can be made in a molding step, without further manufacturing steps, for example, for fixing the retaining element on the body, are required.
  • the heat protection body and the holding element are made of a ceramic material, since this has a particularly high thermal stability.
  • the use of materials based on silicon carbide and / or aluminum oxide is particularly advantageous.
  • the retaining element of the heat protection body can take different forms. A particularly secure anchoring of the retaining element in the layer applied to the furnace inner wall to be protected layer is ensured when the holding element is in the form of a hook or anchor. In the case of a hook-shaped holding element this is preferably at an angle of approx. 30 ° or approx. 45 ° from the back of the heat protection body.
  • the heat protection body has a smooth front.
  • the front surface has a low porosity surface so that it is substantially impermeable to solids (especially dust), liquids and / or gases. This effectively prevents the accumulation and / or infiltration of fly ash during furnace operation.
  • the heat protection body When anchoring the heat protection body according to the invention in a layer applied to the furnace inner wall, the heat protection body as such is slightly pressed into the layer. This layer material is displaced. If several heat protection bodies are anchored in the layer, the displaced material enters the joints formed between adjacent heat protection bodies.
  • the heat protection body at the edge sides in each case has a longitudinal groove. This groove can accommodate the displaced layer material. It is particularly advantageous if the groove cross section has the shape of a circle segment. The opposing grooves of adjacent heat protection bodies thus form a cylinder volume into which the displaced layer material can enter.
  • the front and back of the heat protection body are rectangular and two opposite. Edge sides are beveled towards the front and back.
  • the bevel of the opposite edge sides means in the context of the invention that they are not arranged at right angles to the front and back, but in cross section with front and Forming a parallelogram on the back.
  • a protective system for a boiler tube wall comprising a ceramic layer applied to the boiler tube wall and at least one heat protection body mounted on the layer according to one of claims 1 to 9, wherein the ceramic layer with the boiler tube wall is clamped over at least one of the Kesseirohrwand projecting holding element and wherein the heat protection body is anchored via its at least one holding element in the ceramic layer.
  • the protection system according to the invention provides an effective and inexpensive to implement protection for boiler tube walls.
  • the cladding of the wall by at least one heat shield largely prevents the entry of hot, corrosive gases into the protection system.
  • the heat protection bodies are no longer directly mechanically connected to the Kesslerohrwand, which is why expensive precision welding can be omitted.
  • the ceramic layer may consist of different materials. Be particularly useful ceramic monolithic materials such. B. Casting, stamping, spraying or lubricating compounds based on silicon carbide and / or aluminum oxide.
  • the at least one holding element projecting from the boiler tube wall can have different geometries.
  • Anchors in particular as Y-anchors, boiler tube pins, slotted pins or wave anchors, in particular made of metal, are preferably used.
  • the holding element which serves to clamp the Kesseirschreibwand with the ceramic layer may be provided on the tubes as well as on the webs connecting the tubes.
  • the at least one retaining element is arranged in alignment with the at least one retaining element of the heat protection body.
  • the protection system comprises a plurality of heat protection bodies, wherein the joints formed between the heat protection bodies are filled with temperature-resistant ceramic fiber material.
  • the fiber material filled in the joints has favorable sealing properties and, due to its elasticity, can absorb the thermally induced expansion of the heat protection bodies, without stressing the material.
  • the method according to the invention is simple and inexpensive to carry out, since, in contrast to methods known from the prior art, method steps which require high precision can be dispensed with.
  • the holding elements are attached to the boiler tube wall. These can be mounted in detail on the pipes and / or on the webs located between the pipes.
  • the ceramic layer is applied to the boiler tube wall. This can be done by means of different application techniques. Preferably, the layer is sprayed, stamped, cast or lubricated. After completion of the order, the setting process is initiated on the ceramic layer. As long as the layer is still malleable, d. H . not yet completely set, the at least one retaining element of the heat protection body is pressed into the ceramic layer, so that the heat protection body is seated on the ceramic layer.
  • the setting speed of the binder contained in the ceramic layer can be precisely adjusted by adding retarders or accelerators.
  • Fig. 1 shows a heat protection body according to the invention in a perspective view
  • Fig. 2 shows the heat protection body of FIG. 1 in side view
  • Fig. 3 shows the detail X from FIG. 2 in longitudinal section of the heat protection body from FIG. 2,
  • Fig. 4 shows an inventive system for protecting a boiler tube wall in plan view
  • Fig. 5 shows the detail Y from FIG. 5 in cross section of the heat protection body of the protection system of FIG. 4 and
  • FIG. 6 The protection system of FIG. 4 in an alternative embodiment.
  • the in Fig. 1 heat protection body according to the invention for a protective system for an inner wall of a furnace, in particular for a boiler tube wall has a front 3, a back 2, wherein the front and back 3, 2 are rectangular, and the front 3 with the rear side 2 connecting edge sides 4a, 4b, 4c, 4d.
  • the heat protection body 1 has at least one - in the present case three - mutually arranged holding elements 5.
  • the holding elements 5 In each case, they are designed in the shape of a hook, whereby they are each held at an angle of approx. Protrude 45 ° from the back 2 of the heat protection body 1.
  • the retaining elements can also be designed differently, for example anchor-shaped.
  • the holding elements 5 are made of the same material as the heat protection body 1.
  • heat protection body 1 and holding elements 5 consist uniformly of the ceramic material silicon carbide.
  • the front 3 of the heat protection body 1 has a particularly smooth surface, so that during operation, the deposition of fly ash can be almost completely avoided.
  • the opposite edge sides 4a, 4c are bevelled with respect to the front 3 and the back 2, d. H. they do not form a right angle to the front 3 and the back 2 in contrast to the two other edge sides 4b, 4d.
  • the heat protection body 1 thus has the shape of a parallelogram.
  • a second heat protection body arranged adjacent to the heat protection body 1 has a likewise bevelled edge side corresponding to the bevelled edge side 4c.
  • the heat protection body 1 in each case has a longitudinal groove 6a, 6b on its four edge sides 4a, 4b, 4c, 4d, whose cross-section preferably takes the form of a circle segment.
  • a longitudinal groove 6a, 6b on its four edge sides 4a, 4b, 4c, 4d, whose cross-section preferably takes the form of a circle segment.
  • FIG. 3 and FIG. 5 particularly close recognizable, close each other facing edge sides of each adjacent heat protection body 1 due to the shape of the groove cross-sections and j ered position of the grooves 6a, 6b relative to the parallel edges of the edge sides each have a cylinder volume 7 a.
  • the in Fig. 4 and in a modified embodiment in FIG. 6 illustrated protection system 8 comprises a boiler tube wall 9, which in turn is composed of parallel tubes 10 and the tubes 10 connecting webs 11. Furthermore, the protection system includes a one-sided on the Kesseirohrwand 8 - for example by. Injection - applied ceramic layer 9, which consists of a ceramic-monolithic material, for example mortar or silicon carbide. The ceramic layer 9 is clamped to the boiler tube wall 8 via pins 10a welded to the tubes of the boiler tube wall. As an alternative to the pins, Y anchors may also be provided.
  • Hitzetikk ⁇ rper 1 of the type described above are arranged one above the other like a checkerboard and side by side.
  • the heat protection body 1 are about their holding elements 5 in the ceramic layer. 9 anchored.
  • the heat protection body 1 are pressed into the ceramic layer with their holding elements 5 vorderst and thus securely anchored on the support members 5 in the layer 9.
  • the ceramic must Layer still be malleable, ie not yet cured.
  • the layer material displaced when the heat protection body 1 is pressed in penetrates into the joints between each of the adjacent heat protection bodies 1, where it is absorbed by the cylinder volume 7, 7 'enclosed by the grooves 6a, 6b.
  • the layer material can be removed after assembly from the joints and replaced by a fiber material, which can absorb the thermal expansion of the heat protection body 1 due to its elasticity particularly well without it comes to material stress voltages.
  • Fig. 6 illustrated alternative embodiment of the protection system are provided instead of the welded to the tubes boiler tube pins as Y-armature retaining elements 12 on the webs 11, which take over the clamping of the ceramic layer 9 with the boiler tube wall.
  • the holding elements 12 are formed as Y-anchors and partially arranged in alignment with the hook-shaped holding elements 5 of the heat protection body 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Thermal Insulation (AREA)

Abstract

L'invention concerne un corps de protection contre la chaleur (1) destiné à un système de protection pour une paroi intérieure d'un four, comportant une face avant (3), une face arrière (2) et des faces latérales (4a, 4b, 4c, 4d) reliant la face avant (3) à la face arrière (2). Ce corps de protection contre la chaleur (1) est caractérisé en ce qu'il présente, sur sa face arrière (2), au moins un élément de maintien (5) réalisé dans le même matériau que le corps de protection contre la chaleur (1). L'invention concerne en outre un système de protection pour une plaque tubulaire de chaudière ainsi qu'un procédé de montage d'un tel système de protection.
EP05846523A 2004-12-30 2005-12-24 Corps de protection contre la chaleur destine a un systeme de protection pour une paroi interieure d'un four Withdrawn EP1831630A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004063813A DE102004063813A1 (de) 2004-12-30 2004-12-30 Hitzeschutzkörper für ein Schutzsystem für eine Ofeninnenwand
PCT/EP2005/014029 WO2006072425A1 (fr) 2004-12-30 2005-12-24 Corps de protection contre la chaleur destine a un systeme de protection pour une paroi interieure d'un four

Publications (1)

Publication Number Publication Date
EP1831630A1 true EP1831630A1 (fr) 2007-09-12

Family

ID=36084251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05846523A Withdrawn EP1831630A1 (fr) 2004-12-30 2005-12-24 Corps de protection contre la chaleur destine a un systeme de protection pour une paroi interieure d'un four

Country Status (5)

Country Link
US (1) US20090241815A1 (fr)
EP (1) EP1831630A1 (fr)
JP (1) JP2008527288A (fr)
DE (1) DE102004063813A1 (fr)
WO (1) WO2006072425A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0801515A0 (sv) * 2008-06-26 2009-12-27 Aga Ab Infodring av industriugn
US8627776B2 (en) * 2011-08-31 2014-01-14 Seneca Ceramics Corp. Ceramic liner for attaching ceramic fiber refractory insulation
CN107617853A (zh) * 2017-08-23 2018-01-23 成都飞机工业（集团）有限责任公司 一种不锈钢薄板零件厚度控制的加工方法
DE102017127207A1 (de) * 2017-11-19 2019-05-23 Chemin Gmbh Wärmetauscher

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LU57193A1 (fr) * 1968-10-30 1970-05-04 Glaverbel
FR2595792B1 (fr) * 1986-03-17 1990-02-02 Mediterranee Const Navales Ind Perfectionnements apportes a la fixation des elements de protection des chambres de combustion de chaudieres
FR2619741B1 (fr) * 1987-06-23 1992-09-04 Guidat Gilbert Installation industrielle pour la production en flux continu de parcelles ou particules stabilisees a partir de dechets de bois
FR2624952B1 (fr) * 1987-12-22 1990-04-06 Stein Industrie Dispositif de protection d'un ecran de chaudiere de recuperation de chaleur et procede de fabrication de ce dispositif
JPH01106706U (fr) * 1987-12-29 1989-07-18
FR2635576B1 (fr) * 1988-08-22 1990-12-14 Stein Industrie Dispositif de protection d'ecrans de chaudieres, notamment pour fours d'incineration d'ordures, et procede de fabrication de ce dispositif
DE9107273U1 (de) * 1991-06-10 1992-08-20 Noell - K + K Abfalltechnik GmbH, 4040 Neuss Keramische Abkleidung von Brennkammerwänden
US5585072A (en) * 1995-01-27 1996-12-17 The Babcock And Wilcox Company Retractable chemical injection system
ATE267360T1 (de) * 1998-08-20 2004-06-15 Martin Umwelt & Energietech Dampferzeuger für überhitzten dampf für verbrennungsanlagen mit korrosiven rauchgasen
JP3881984B2 (ja) * 2001-11-08 2007-02-14 三菱重工業株式会社 水管保護用耐火タイルの取り付け構造と水管保護用耐火構造体
JP3842997B2 (ja) * 2001-11-14 2006-11-08 三菱重工業株式会社 水管保護用耐火構造体及びその施工方法
DE10303173B4 (de) * 2003-01-27 2005-06-30 Saint-Gobain Industriekeramik Düsseldorf Gmbh Rohrwandschutz für eine Kesselrohrwand
US7021380B2 (en) * 2003-06-27 2006-04-04 Halliburton Energy Services, Inc. Compositions comprising set retarder compositions and associated methods

Non-Patent Citations (1)

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Title
See references of WO2006072425A1 *

Also Published As

Publication number Publication date
JP2008527288A (ja) 2008-07-24
DE102004063813A1 (de) 2006-07-13
US20090241815A1 (en) 2009-10-01
WO2006072425A1 (fr) 2006-07-13

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