EP2302315A1 - Corps de protection contre la corrosion - Google Patents

Corps de protection contre la corrosion Download PDF

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Publication number
EP2302315A1
EP2302315A1 EP10174574A EP10174574A EP2302315A1 EP 2302315 A1 EP2302315 A1 EP 2302315A1 EP 10174574 A EP10174574 A EP 10174574A EP 10174574 A EP10174574 A EP 10174574A EP 2302315 A1 EP2302315 A1 EP 2302315A1
Authority
EP
European Patent Office
Prior art keywords
corrosion protection
wall
protection body
guide channel
hook element
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Withdrawn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
EP10174574A
Other languages
German (de)
English (en)
Inventor
Stefan Bronsert
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 EP2302315A1 publication Critical patent/EP2302315A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F27D1/0003—Linings or walls
    • F27D1/004—Linings or walls comprising means for securing 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—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
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements
    • F27D1/147—Assembling elements for bricks
    • F27D1/148—Means to suspend bricks

Definitions

  • the invention relates to a corrosion protection body for a protective system for a furnace inner wall, in particular for a boiler tube wall, with a front side, a rear side and with the front side connecting to the rear edge sides. Furthermore, the invention relates to a protective system for a furnace inner wall and a method for constructing a protection system for a furnace inner wall.
  • Corrosion protection body for furnace inner walls of the type mentioned which also regularly take over the function of heat protection for the furnace inner walls, and constructed of such corrosion protection bodies protection systems for furnace inner walls have long been known from the prior art. They generally serve to protect the inner walls of industrial furnaces, for example in waste incineration plants, from the very hot and corrosive combustion gases produced during combustion.
  • the furnace inner wall is designed as a boiler tube wall and clad by pipe protection plates.
  • the pipe protection plates are thereby individually held by projecting from the boiler tube wall welded to the wall holding elements which engage in corresponding molded into the back of the pipe protection plates recesses or grooves.
  • the gap-like space between the boiler tube wall and the Pipe protection plates is filled with a ceramic-monolithic filling compound in the form of mortar or concrete.
  • Another variant provides that a filling of the gap formed between the pipe protection plates and the boiler tube wall to be protected is omitted and it is instead continuously flowed through during operation of the furnace by an air flow ("ventilated system").
  • a heat protection body pipe protection plate described. It comprises a molded into the back of the plate and opened to one edge side of the heat protection body groove with T-shaped cross-section, in which a projecting from the boiler wall to be protected retaining member engages with a corresponding T-shaped cross-section.
  • the T-shaped hook element bears against the inner end of the groove, wherein it completely absorbs the weight of the heat protection body.
  • the present invention seeks to provide a corrosion protection body for a protective system for a furnace inner wall, in particular for a boiler tube wall, with a front, a back and with the front side connecting the front side edges, which is simple and a particularly precise alignment allowed on the furnace inner wall, so that a particularly simple and precise to be carried out construction of a protective system for a furnace inner wall is possible. Furthermore, the invention has for its object to provide a protective system for a furnace inner wall and a method for its construction.
  • a corrosion protection body for a protection system for a furnace inner wall according to the preamble of claim 1, characterized in that the corrosion protection body on the back has a closed top guide channel for receiving the free leg of a protruding from the furnace inner wall hook member, wherein the guide channel at least one end has an insertion opening for the hook element, wherein the provided at at least one end of the upper side closed guide channel insertion opening is bounded by two material cheeks.
  • the particular advantage of the anticorrosive body according to the invention is that is protected by the formation of a closed top guide channel for receiving the hook element this penetrating into the back of the anticorrosive corrosive hot gases, so that regularly occurring in the heat protection bodies of the prior art corrosion the hook elements practically fails. Furthermore, the inclusion of the hook element in the closed guide channel ensures a particularly precise fit of the anti-corrosion body to the furnace inner wall, and by the provided on both sides of the insertion material cheeks, the mobility of the hooked in the hook element corrosion protection in all possible Degrees of freedom limited so that the corrosion protection body is finally mounted without play on the furnace inner wall. As a result, the structure of a constructed of corrosion protection bodies protection system for a furnace inner wall is further simplified and made possible with higher precision.
  • the upper side closed guide channel can take different forms. Preferably, it is rectilinear. However, a curved course is also possible.
  • the upper side closed guide channel is arranged substantially parallel to the extension of the back.
  • L-shaped hook elements are understood as meaning such hook elements which, at their free end, have two sections which are substantially at right angles to one another and together form the shape of an "L".
  • the upper side closed guide channel has a round, in particular a circular cross-section.
  • the guide channel has at its two ends in each case an insertion opening for the hook element. This facilitates the attachment of the corrosion protection body to the hook element insofar as that two possible orientations of the corrosion protection body can be selected in order to hook the hook element into the guide channel. Furthermore, if necessary, the guide channel can be cleaned in a particularly simple manner.
  • the corrosion protection body is plate-shaped.
  • the front and back sides can assume all imaginable geometries. Preference is given to those from which large-area substantially gap-free protection systems can be constructed for large inner walls of pipes.
  • the front and back have a quadrangular, in particular square shape.
  • the anti-corrosion body hexagonal so that a honeycomb-shaped protection system can be constructed from a variety of hexagonal corrosion protection body.
  • the upper side closed guide channel for receiving the hook element can be completely formed in the volume enclosed between the front and rear.
  • the anticorrosive body preferably has a bulge on its rear side into which the guide channel closed on the upper side is formed. This allows a substantially planar geometry of the anti-corrosion body and also facilitates their production.
  • the material bulge can be arranged at approximately any point on the back of the anti-corrosion body. Preferably, it is spaced from the edge sides of the back, in particular arranged centrally on the back.
  • the material bulge can also take on various forms. Preferably, it is formed axially symmetrical, wherein an axis of symmetry is located in the guide channel. In this case, the material bulge in the cross section through the guide channel may be bell-shaped and further formed in longitudinal section along the guide channel or parallel to it trapezoidal.
  • the material bulge is arranged centrally on the back and extends from one edge side to the opposite edge side of the anti-corrosion body.
  • the material bulges are bevelled to opposite edge sides.
  • a volume which widens to the rear of the anticorrosive body is defined between anticorrosive bodies adjacently arranged on these edge sides, which can be filled particularly easily with a filling compound, for example mortar or concrete.
  • a protective system for an internal furnace wall in particular for a boiler tube wall, with at least one hook element projecting from the furnace inner wall and at least one corrosion protection body according to one of claims 1 to 13, wherein the respective cross section of the hook element and the guide channel of Corrosion protection body are coordinated so that the corrosion protection body is mounted on the hook element substantially free of play on the furnace inner wall.
  • the protection system can be easily mounted on the furnace inner wall, since Reworking for the precise alignment of the at least one corrosion protection body, preferably a plurality of corrosion protection bodies, virtually eliminated.
  • the hook element is L-shaped.
  • the hook element may be provided with a coating of a combustible material.
  • This has the advantage that the position of the anticorrosive body can be set particularly precisely when constructing the protection system, since as a result of the coating a complete backlash between hook element and guide channel is made. In particular, even a non-positive connection between corrosion protection body and coated hook element exist.
  • the protection system is preferably constructed completely from a plurality of corrosion protection bodies and the furnace lined thereby is put into operation, the coatings of the hook elements are burned or pyrolyzed due to the great heat, so that the anticorrosive bodies which have already been finished in the course of assembly now have a low degree of corrosion resistance Game are provided and as a result, minor changes in position due to thermal expansion are possible. As a result, the stresses in the corrosion protection bodies of the protection system are further reduced.
  • the protection system itself can be realized in that the at least one corrosion protection body is ventilated, mortared or back-poured.
  • a further aspect of the invention relates to a protected wall section of a furnace inner wall, in particular a boiler tube wall, with a protective system according to one of claims 14 to 19.
  • the object mentioned at the outset is also achieved by a method for constructing a protective system for a furnace inner wall, in particular for a boiler tube wall, in particular according to one of claims 14 to 19, with at least one hook element projecting from the furnace inner wall and at least one over the hook element substantially free of play
  • Furnace wall mounted anti-corrosion body solved in that the hook element is provided with a coating of a combustible material and then the corrosion protection body is hooked into the hook element.
  • FIG. 1 is a partially built protection system for one
  • a boiler tube wall 1 which consists of parallel tubes 2 and the tubes in pairs web-like connecting pipe fins 3.
  • L-shaped hook elements 4 are welded at regular intervals.
  • substantially plate-shaped corrosion protection body 5 'attached at the L-shaped hook elements 4 are substantially plate-shaped corrosion protection body 5 'attached, as will be explained below in detail.
  • FIG. 2 shows a corrosion protection body 5 in a first embodiment.
  • the anticorrosive body 5 is formed as a plate with a square base and comprises a - not visible - front 6, a 6 opposite the front side 7 and the front 6 with the back 7 connecting edge sides 8, 9, 10, 11. It is understood that In addition to a square front or back 6, 7 other shapes are possible, with those forms are preferred with which can achieve a complete coverage of the boiler tube wall 1.
  • the corrosion protection body 5 On its rear side 7, the corrosion protection body 5 has a bulge 12 on the material. In the material bulge 12 a parallel to the extension of the back 7 arranged, closed on top side guide channel 13 is formed. At its two ends, the guide channel 13 each have an insertion opening 14 for a hook element, via which the corrosion protection body 5 for the purpose of building a protection system on a pipe inner wall, in the present case a boiler tube wall 1, can be attached.
  • Both insertion openings 14 are each bounded by two material cheeks 14a, 14b. Due to the design of the guide channel in combination with the material cheeks 14a, 14b bordering the insertion openings 14, it is achieved that the mobility of the corrosion protection body suspended in the hook element is limited in particular in the rotational degrees of freedom such that the corrosion protection body 5 essentially free of play on the Boiler tube wall 1 can be mounted. As a result, the construction of the protective system constructed of corrosion protection bodies 5 for the boiler tube wall 1 can be further simplified. In particular, it is no longer necessary to provide clearance cams resting on the pipe wall to be protected on the rear sides of the corrosion protection body, which can lead to tensions and cracks in the corrosion protection body. Further, the hook member 4 accommodated in the upper side closed guide channel 13 is protected from the penetration of hot, corrosive gases, so that the danger of long-term corrosion is minimized.
  • the corrosion protection body 5 formed for an L-shaped hook element.
  • the material cheeks 14a, 14b initially a perpendicular to the extension of the back 7 of the anti-corrosion body 5 extending channel portion as an insertion opening 14 over which the guide channel 13 is perpendicular, ie parallel to the back 7 of the anti-corrosion body 5, arranged as in FIG. 2 shown.
  • FIG. 3 shows a frontal view of the corrosion protection body 5.
  • the cross-section of the material bulge 12 is recognizable in an axially symmetrical manner, wherein an axis of symmetry lies in the guide channel 13.
  • the bulge 12 is bell-shaped (see also Fig. 4 ), while in longitudinal section along the guide channel or in parallel thereto is trapezoidal, in particular in FIG. 5 recognizable.
  • FIG. 4 shows a plan view of a protection system for a boiler tube wall 1 with two presently shown anti-corrosion bodies 5.
  • the vertically disposed side surfaces 8, 10 are arranged slightly angled to each other, so that the side surfaces 10, 8 of two adjacent corrosion protection body 5 form a to the gap between the corrosion body 5 and boiler tube wall 1 slightly widening gap.
  • This has the advantage that a serving to seal the respective joints fiber material can be relatively easily introduced into the joints in the construction of a protection system, but can be forced out of the joint during operation of the furnace difficult.
  • FIG. 5 now the protection system is off FIG. 4 in vertical longitudinal section with two superimposed, immediately adjacent arranged corrosion protection bodies 5.
  • the L-shaped hook element 4 is almost completely received in the bulge 12 of the anti-corrosion body 5, wherein the vertically upstanding free end portion of the hook member 4 is completely and positively received in the guide channel 13, so that it no corrosive gases is exposed.
  • FIG. 6 a further embodiment of a corrosion protection body for a protection system for a furnace inner wall is shown.
  • the corrosion protection body 5 ' is substantially plate-shaped and has a top side, ie to the back of the corrosion protection body 5' closed guide channel 13 'at its lower end a slot-like insertion opening 14' is arranged.
  • the corrosion protection body 5 off Fig. 2 is the upper side closed guide channel 13 'in a bulge 12' on the back of the anti-corrosion body 5 'is arranged.
  • the material bulge 12 ' is bell-shaped in cross-section through the guide channel and extends in the present case from one edge side 9' to the opposite edge side 11 '.
  • flank surfaces 12 ' are defined by mutually arranged corrosion protection body 5' very strong expanding areas 122 ', which can be very easily filled with a filling compound.
  • FIGS. 1 . 4 . 5 . 7 and 8 illustrated protection system for the boiler tube wall is ventilated in the embodiments of these figures, that is, the gap between the corrosion protection bodies 5, 5 'and the boiler tube wall 1 is not filled with a concrete mass or mortar, but is traversed during operation of the furnace with Kuft. A backfill that is of course also possible with the heat protection bodies 5, 5 'of the present invention.
  • the hook elements 4 need not be attached directly to the pipe fins 3 between the tubes 2 of the boiler tube wall 1. Rather, it is possible, the hook elements 4 on fastening strips by welding, screws or the like. to attach what can be done in pre-assembly to allow a precise attachment and, consequently, a precise alignment of the heat protection body 5, 5 'with each other and the boiler tube wall 1.
  • the strips 3a are after attaching the hook elements 4 'in turn to the pipe fins by screws, welding o. The like. Attached.
  • strips 3a can be arranged one below the other so that a plurality of hook elements 4 'can be arranged in a defined manner along a pipe fin 3 of the boiler tube wall 1. It is understood that a single bar may also comprise more than two hook elements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP10174574A 2009-08-31 2010-08-31 Corps de protection contre la corrosion Withdrawn EP2302315A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009039390A DE102009039390A1 (de) 2009-08-31 2009-08-31 Korrosionsschutzkörper

Publications (1)

Publication Number Publication Date
EP2302315A1 true EP2302315A1 (fr) 2011-03-30

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ID=43092304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10174574A Withdrawn EP2302315A1 (fr) 2009-08-31 2010-08-31 Corps de protection contre la corrosion

Country Status (2)

Country Link
EP (1) EP2302315A1 (fr)
DE (1) DE102009039390A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857750B1 (fr) * 2013-10-04 2019-04-03 Veolia Proprete Brique réfractaire de forme adaptée

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243801A (en) 1992-02-20 1993-09-14 The Babcock & Wilcox Company Refractory tile for heat exchanger protection
WO1997009577A1 (fr) * 1995-09-05 1997-03-13 Zampell Advanced Refractory Technologies Inc. Carreau refractaire, dispositif de montage et procede de montage
US20020077767A1 (en) * 1997-11-28 2002-06-20 Mitsubishi Heavy Industries, Ltd. Heat-resistant assembly for protecting boiler tubes and method of assembling same
WO2003067154A1 (fr) * 2002-02-02 2003-08-14 Saint-Gobain Industriekeramik Düsseldorf Gmbh Plaque pour systeme de protection pour paroi de tube de chaudiere et systeme de protection pour paroi de tube de chaudiere
DE20309034U1 (de) * 2003-06-11 2003-10-02 Möckel Feuerungstechnik GmbH, 96154 Burgwindheim Platte für eine Rohrwandverkleidung
DE10361104A1 (de) 2003-12-22 2005-07-28 Saint-Gobain Industriekeramik Düsseldorf Gmbh Hitzeschutzkörper
EP1577625A1 (fr) * 2004-03-18 2005-09-21 Jünger + Gräter GmbH Feuerfestbau Ensemble écran thermique refractaire
EP1589284A2 (fr) * 2004-04-24 2005-10-26 Jünger + Gräter GmbH Feuerfestbau Plaque de revêtement pour paroi tubulaire avec au moins un évidement et écran thermique réfractaire
DE202005018131U1 (de) * 2005-11-17 2006-01-26 Karrena Gmbh Feuerfester Formstein

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243801A (en) 1992-02-20 1993-09-14 The Babcock & Wilcox Company Refractory tile for heat exchanger protection
WO1997009577A1 (fr) * 1995-09-05 1997-03-13 Zampell Advanced Refractory Technologies Inc. Carreau refractaire, dispositif de montage et procede de montage
US20020077767A1 (en) * 1997-11-28 2002-06-20 Mitsubishi Heavy Industries, Ltd. Heat-resistant assembly for protecting boiler tubes and method of assembling same
WO2003067154A1 (fr) * 2002-02-02 2003-08-14 Saint-Gobain Industriekeramik Düsseldorf Gmbh Plaque pour systeme de protection pour paroi de tube de chaudiere et systeme de protection pour paroi de tube de chaudiere
DE20309034U1 (de) * 2003-06-11 2003-10-02 Möckel Feuerungstechnik GmbH, 96154 Burgwindheim Platte für eine Rohrwandverkleidung
DE10361104A1 (de) 2003-12-22 2005-07-28 Saint-Gobain Industriekeramik Düsseldorf Gmbh Hitzeschutzkörper
EP1577625A1 (fr) * 2004-03-18 2005-09-21 Jünger + Gräter GmbH Feuerfestbau Ensemble écran thermique refractaire
EP1589284A2 (fr) * 2004-04-24 2005-10-26 Jünger + Gräter GmbH Feuerfestbau Plaque de revêtement pour paroi tubulaire avec au moins un évidement et écran thermique réfractaire
DE202005018131U1 (de) * 2005-11-17 2006-01-26 Karrena Gmbh Feuerfester Formstein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857750B1 (fr) * 2013-10-04 2019-04-03 Veolia Proprete Brique réfractaire de forme adaptée

Also Published As

Publication number Publication date
DE102009039390A1 (de) 2011-03-03
DE102009039390A8 (de) 2011-06-01

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