WO2016109904A1 - Paroi réfractaire, en particulier pour four de combustion - Google Patents

Paroi réfractaire, en particulier pour four de combustion Download PDF

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Publication number
WO2016109904A1
WO2016109904A1 PCT/CH2016/000004 CH2016000004W WO2016109904A1 WO 2016109904 A1 WO2016109904 A1 WO 2016109904A1 CH 2016000004 W CH2016000004 W CH 2016000004W WO 2016109904 A1 WO2016109904 A1 WO 2016109904A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
gas
refractory
gas distribution
boiler
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
PCT/CH2016/000004
Other languages
German (de)
English (en)
Inventor
Tobias Kern
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.)
Mokesys AG
Original Assignee
Mokesys 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 Mokesys AG filed Critical Mokesys AG
Priority to EP16700521.4A priority Critical patent/EP3243027B1/fr
Priority to ES16700521T priority patent/ES2703583T3/es
Priority to PL16700521T priority patent/PL3243027T3/pl
Priority to DK16700521.4T priority patent/DK3243027T3/en
Publication of WO2016109904A1 publication Critical patent/WO2016109904A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F22B37/36—Arrangements for sheathing or casing boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/48—Preventing corrosion
    • 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
    • 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

Definitions

  • the invention relates to a refractory wall, in particular for a
  • Incinerator according to the preamble of patent claim 1.
  • Such refractory walls are e.g. used in combustion chambers of combustion plants.
  • the boiler wall is often designed as a metal pipe wall and is usually made of webs connected by pipes.
  • the projecting in the distance to the pipe wall refractory protective cover is the pipe wall before
  • the refractory protective cover is usually formed in rows and columns next to or above one another arranged plates.
  • Refractory walls are e.g. also used in fluidized bed ovens, where the boiler wall consists of a more or less thick simple metal wall. Again, the boiler wall or metal wall to be protected from corrosion.
  • the panels of the protective covering are usually sealed to each other to a certain extent by various measures to prevent the passage of
  • So-called ventilated wall systems address this problem by the fact that a protective gas - generally air - is pumped through the space between the boiler wall and the distance superior protective lining.
  • the gas or air is in this case with respect to the combustion chamber under a slight overpressure, which prevents the flue gases from penetrating from the combustion chamber into the wall space and can attack the boiler wall or other metal parts.
  • a generic refractory wall is described for example in document CH 699 406 A2.
  • the Air supply or more generally the supply of inert gas into the space between the boiler wall and the protective cover by a plurality of distributed at the lower end of the refractory wall across this
  • Inlet openings in the boiler wall which are fed from the non-fire side of the refractory wall ago from at least one supply channel.
  • the inlet ports are located in the vessel wall in the area of vertically continuous grooves of the plates of the protective shroud, so that the gas or air (from the side) is primarily supplied to these grooves and can spread over these throughout the wall.
  • either the panels of the protective covering itself are provided with transverse channels or are individual horizontal rows of panels at certain vertical intervals, e.g. each 2-4 m, arranged at a slightly greater distance from the boiler wall than the other plates, so that horizontal transverse channels are formed over which the gas or the air can spread over the wall width.
  • the invention has for its object to improve a refractory wall of the generic type with respect to the supply of protective gas or air in the space between the boiler wall and the protective panel.
  • a refractory wall in particular for a combustion furnace comprises a boiler wall and at a distance from this superior refractory protective covering of a plurality of juxtaposed and stacked in rows and columns refractory plates, each having at least one Plate holder are fixed to the boiler wall, wherein the refractory wall has a ventilated wall portion, in the region between the boiler wall and the protective cover a gap is present, and wherein the refractory wall comprises gas supply means for supplying a protective gas in the intermediate space.
  • the gas supply means comprise a gas distribution channel and at least one gas supply line for supplying inert gas in the
  • Gasverteilkanal is arranged with respect to the installation position of the refractory wall at the lower end of the ventilated wall portion and below the Gasverteilkanals is not a ventilated wall section.
  • Gas distribution channel is with respect to the boiler wall on the same side as the
  • the gas distribution channel is formed by a gas distribution box into which the at least one gas supply line opens.
  • a gas distribution box is easy to implement and quick to install.
  • the gas distribution box has a plurality of gas outlet openings, which in the space between the boiler wall and the Open protective cover.
  • the majority of Gasaustassöffhungen an optimal protective gas distribution can be achieved.
  • the gas distribution channel is formed by at least one row of juxtaposed and spaced from the vessel wall refractory plates.
  • Gas distribution channel can be realized without special additional construction elements.
  • the gas distribution channel is limited on one side by the boiler wall.
  • the existing boiler wall as Gasverteilkanalwand the gas distribution channel is easier and cheaper to produce.
  • the at least one opens
  • the gas supply line can be made so short.
  • the at least one gas supply line opens from below into the gas distribution channel, wherein expediently the at least one gas supply line is guided through the boiler wall below the gas distribution channel and then between the boiler wall and the
  • the boiler wall is designed as a pipe wall with pipes connected by webs.
  • FIG. 1 shows a schematic interior view of a combustion furnace with a refractory wall according to the invention
  • Fig. 2 is a fragmentary sectional view of the refractory wall according to the
  • Fig. 3 is a fragmentary sectional view of the refractory wall according to the
  • FIG. 5 - a fragmentary sectional view analogous to Fig. 2 of a second
  • Fig. 6 is a fragmentary sectional view of the refractory wall according to the
  • Fig. 7 is a fragmentary sectional view of the refractory wall according to the
  • Fig. 8 - a fragmentary sectional view analogous to Fig. 2 of a third
  • FIG. 9 is a fragmentary sectional view of the refractory wall according to FIG.
  • FIG. 10 is a fragmentary sectional view of the refractory wall according to FIG.
  • Fig. 12 is a fragmentary sectional view of the refractory wall according to the
  • one above the other, side, vertical, horizontal, height and width refer to the usual, shown in the drawing vertical position of the refractory wall.
  • FIG. 1 schematically shows a combustion furnace V equipped with a refractory wall W according to the invention.
  • the wall W is in an upper,
  • the wall W comprises a boiler wall 1 (FIG. 2) which is not visible in FIG. 1 and a protective covering 2 which is at a distance from it and which consists of a multiplicity of refractory plates arranged side-by-side and one above the other in rows and columns.
  • are designated at 21, while the plates of the lower wall portion W 2 are denoted by 22.
  • the plates 21 and 22 are, for example, ceramic SiC plates, preferably SiC 90 plates having an SiC content of about 90% in the production, which are fire resistant up to over 1000 ° C.
  • Wall section W 2 continuous boiler wall 1 is formed as a tube wall and consists of a plurality of vertical use in practice pipes 1 1, which are held together by webs 12 at a mutual distance (see
  • the tubes 1 1 and the webs 12 are usually made of steel.
  • a boiler insulation 15 is attached (Fig. 2).
  • the plates 21 and 22 of the protective cover 2 are attached to the boiler or pipe wall 1 by means (here four in the example) plate mounts 13.
  • the plates 21 and 22 of the protective cover 2 are attached to the boiler or pipe wall 1 by means (here four in the example) plate mounts 13.
  • Plate mounts 13 are made of heat resistant steel, e.g. Steel no. 310 according to AISI standard or material no. 1.4845 according to DIN 17440.
  • the plate holders 13 essentially comprise in each case one bolt welded to a web 12 and one nut sitting on the bolt.
  • the plate holders 13 engage in vertically continuous, inwardly widened grooves 21a (FIG. 4) and 22a (FIG. 10) of the plates 21 and 22, respectively, and set the spacing of the plates 21 and 22
  • the plate supports 13 also serve to support the plates 21 and 22 in the vertical direction, the plates 21 and 22 with arranged on them (molded) bridge elements (brackets) 21b and 22b rest on the plate brackets 13.
  • the plates 21 and 22 are movable in the vertical direction to some extent so as to thermally induced expansion or. Allow contraction movements. Between the side by side
  • arranged plates 21 and 22 extend undeclared vertical joints and between the superposed plates 21 and 22 are not designated horizontal joints.
  • the joints are in a conventional manner by inserted sealing elements and / or an overlapping formation of
  • the protective cover 2 is at a certain distance from the boiler wall or
  • Pipe wall 1 is arranged so that between the plates 21 and 22 of the
  • Protective cover 2 and the boiler wall 1 each have a gap 3 and 4 respectively.
  • the gap 3 is empty, in the lower, back-poured wall section W 2 , the gap 4 with a refractory potting filled.
  • the vertically continuous grooves 22a of the plates 22 are also filled with the potting compound (FIG. 10).
  • the essential difference of the inventive refractory wall over conventional refractory walls of this type is the implementation of the air or general inert gas feed into the ventilated wall portion Wi of the refractory wall W.
  • the refractory wall with the already above mentioned on the same side of the boiler wall 1 as the protective cover 2 arranged gas distribution channel K equipped, which extends at the lower end of the ventilated wall portion W] across the width of the wall.
  • the gas distribution channel K is connected via lines still to be explained to a protective gas or air source and is continuous over its length or at several discrete locations in
  • Gas distribution channel K and the type of protective gas supply into the gas distribution channel K differ.
  • the remaining structure of the refractory wall is at all four
  • inventive refractory wall of the gas distribution channel K is formed by a rectangular cross-section gas distribution boxes 5, which is disposed between the bottom row of plates 21 and the top row of plates 22 and terminates substantially flush with the outer surface of the protective cover 2.
  • On its inside is preferably made of metal
  • Gas distribution box 5 limited by the boiler wall 1 and attached to this
  • this has a plurality of distributed over its entire length (width of the wall) arranged gas outlet openings 51, which open from below into the gap 3 between the boiler wall 1 and the plates 21 of the protective cover 2 and the
  • a plurality of gas supply lines 52 are preferably provided, which are passed through the boiler insulation 15 and the boiler wall 1 and open into the interior of the gas distribution box 5.
  • the gas supply lines 52 are in operation with a symbolic only indicated by the arrow Q Schutzgast. Air source connected.
  • the gas distribution box 5 by means of sealing elements, for example
  • Refractory wall according to the invention differs from the just described first exemplary embodiment only by the way in which the protective gas is fed into the gas distribution box 5.
  • the gas supply takes place from below into the
  • Gas distribution box 5 by means of several gas supply lines, each having a vertical portion 53 a and a substantially horizontal portion 53 b.
  • the vertical sections 53a of the gas supply lines run parallel to the boiler wall 1 through part of the back-poured wall section W 2 and open from below into the gas distribution box 5 (FIG. 8).
  • Gas supply lines enforce similar to the gas supply lines according to FIG. 2 the kettles wall 1 and the boiler insulation 15 (not shown) ( Figure 10).
  • the length of the vertical sections 53a of the gas supply lines can be several meters, as can be seen for example from FIG. 1, where the vertical sections 53a of the gas supply lines extend into the lower region of the lower, back-poured wall section W 2 .
  • FIGS. 5-7 show a second exemplary embodiment of the refractory wall according to the invention, which is primarily determined by the implementation of the invention
  • Gas distribution channel of the two embodiments just described differs.
  • the here with K 'designated gas distribution channel is here integrated directly into the protective cover 2 and between the boiler wall 1 on the one hand and a number of (non-cast) plates 23 on the other hand formed.
  • Downstream of the Gasverteilkanal K ' is limited by the top row of the back-cast plates 22 of the lower wall portion W 2 , and above the Gasverteilkanals K immediately adjoins the bottom row of plates 21 of the rear-ventilated wall portion Wj.
  • the plates 23 in the region of the gas distribution channel K ' are preferably of the same design and are fastened to the vessel wall 1 as the plates 22 of the back-poured wall section W 2 , except that they are thinner (in the direction perpendicular to their surface).
  • Plate holders 13 engage in vertically continuous, inwardly widened grooves 23a (FIG. 7) of the plates 23 and fix their distance from the tube wall 1.
  • the plate supports 13 also serve to support the plates 23 in the vertical direction, the plates 23 with them arranged (molded) bridge elements (consoles) 23 b ( Figures 5 and 6) on the
  • Plate holders 13 rest. In contrast to the plates 22 of the lower wall portion W 2 , the plates 23 are not cast-in. They are also less thick or deep formed as the plates 21 of the ventilated wall portion Wi.
  • Gasverteilkanals K ' is their distance from the boiler wall 1 significantly larger, so that between the row of plates 23 and the boiler wall 1, a relatively large free space, which forms the gas distribution channel K', in which the protective gas is relatively unhindered over the entire width the refractory wall can distribute.
  • a relatively large free space which forms the gas distribution channel K', in which the protective gas is relatively unhindered over the entire width the refractory wall can distribute.
  • inventive refractory wall differs from the just described third exemplary embodiment only by the type of supply of the protective gas in the Gasverteilkanal K ⁇
  • the gas supply takes place here similar to the second
  • the vertical sections 53a of the gas supply lines run parallel to the boiler wall 1 through part of the back-poured wall section W 2 and open from below into the gas distribution channel K '(FIG. 11).
  • Gas supply lines similar to the gas supply lines 52 according to FIG. 2, pass through the boiler wall 1 and the boiler insulation 15 (not shown) (FIG. 10).
  • the boiler wall of the refractory wall according to the invention does not have to be formed as a tube wall, but may, for example, also be a normal metal wall, on which the plate holders 13 are arranged and fastened analogously to the tube wall described above.

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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)

Abstract

L'invention concerne une paroi réfractaire qui comprend une paroi de chaudière (1) et un habillage de protection (2) qui est placé en avant et à distance de la paroi de chaudière et qui est constituée d'une pluralité de plaques réfractaires (21, 22). La paroi réfractaire a une partie de paroi ventilée en arrière dans la zone de laquelle un espace intermédiaire (3) est ménagé entre la paroi de chaudière (1) et l'habillage de protection (2). Des moyens d'alimentation en gaz destinés à amener un gaz de protection dans l'espace intermédiaire (3) comprennent un conduit de distribution de gaz (K) et au moins un conduit d'alimentation en gaz (52) destiné à amener un gaz de protection dans le conduit de distribution de gaz. Le conduit de distribution de gaz (K) est disposé à l'extrémité inférieure de la partie de paroi ventilée en arrière et aucune partie de paroi ventilée en arrière ne se trouve au-dessous du conduit de distribution de gaz (K). Le conduit de distribution de gaz (K) est disposé, par rapport à la paroi de chaudière (1), du même côté que l'habillage de protection (2) et s'étend transversalement au-dessus de l'habillage de protection (2). Le conduit de distribution de gaz (K) est en communication, de façon continue sur toute sa longueur ou en plusieurs endroits discrets, avec l'espace intermédiaire (3) entre la partie de l'habillage de protection (2), située au-dessus de l'espace intermédiaire, et la paroi de chaudière (1).
PCT/CH2016/000004 2015-01-07 2016-01-06 Paroi réfractaire, en particulier pour four de combustion Ceased WO2016109904A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16700521.4A EP3243027B1 (fr) 2015-01-07 2016-01-06 Paroi réfractaire, en particulier pour four de combustion
ES16700521T ES2703583T3 (es) 2015-01-07 2016-01-06 Pared refractaria, en particular para un horno de combustión
PL16700521T PL3243027T3 (pl) 2015-01-07 2016-01-06 Ściana ogniotrwała, zwłaszcza do pieca do spalania
DK16700521.4T DK3243027T3 (en) 2015-01-07 2016-01-06 Refractory wall, especially for an incinerator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00016/15 2015-01-07
CH00016/15A CH710597A1 (de) 2015-01-07 2015-01-07 Feuerfeste Wand, insbesondere für einen Verbrennungsofen.

Publications (1)

Publication Number Publication Date
WO2016109904A1 true WO2016109904A1 (fr) 2016-07-14

Family

ID=52648764

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2016/000004 Ceased WO2016109904A1 (fr) 2015-01-07 2016-01-06 Paroi réfractaire, en particulier pour four de combustion

Country Status (6)

Country Link
EP (1) EP3243027B1 (fr)
CH (1) CH710597A1 (fr)
DK (1) DK3243027T3 (fr)
ES (1) ES2703583T3 (fr)
PL (1) PL3243027T3 (fr)
WO (1) WO2016109904A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3561385A1 (fr) 2018-04-26 2019-10-30 Mokesys Ag Mur réfractaire avec couche anti-corrosion

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB678206A (en) * 1945-06-19 1952-08-27 Vitkovice Zelezarny A method and an apparatus for cooling walls
US4426937A (en) * 1980-08-08 1984-01-24 Sietmann Vernon H Heat exchanger furnace
US4441324A (en) * 1980-04-02 1984-04-10 Kogyo Gijutsuin Thermal shield structure with ceramic wall surface exposed to high temperature
EP0166133A1 (fr) * 1984-05-18 1986-01-02 KOCH, Theodor Paroi intérieure d'un foyer de chaudière
DE9107273U1 (de) * 1991-06-10 1992-08-20 Noell - K + K Abfalltechnik GmbH, 4040 Neuss Keramische Abkleidung von Brennkammerwänden
DE19706077A1 (de) * 1997-02-17 1998-08-20 Loesche Gmbh Heißgaserzeuger
CH699406A2 (de) 2008-08-26 2010-02-26 Mokesys Ag Hinterlüftete feuerfeste Wand, insbesondere für einen Verbrennungsofen.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB678206A (en) * 1945-06-19 1952-08-27 Vitkovice Zelezarny A method and an apparatus for cooling walls
US4441324A (en) * 1980-04-02 1984-04-10 Kogyo Gijutsuin Thermal shield structure with ceramic wall surface exposed to high temperature
US4426937A (en) * 1980-08-08 1984-01-24 Sietmann Vernon H Heat exchanger furnace
EP0166133A1 (fr) * 1984-05-18 1986-01-02 KOCH, Theodor Paroi intérieure d'un foyer de chaudière
DE9107273U1 (de) * 1991-06-10 1992-08-20 Noell - K + K Abfalltechnik GmbH, 4040 Neuss Keramische Abkleidung von Brennkammerwänden
DE19706077A1 (de) * 1997-02-17 1998-08-20 Loesche Gmbh Heißgaserzeuger
CH699406A2 (de) 2008-08-26 2010-02-26 Mokesys Ag Hinterlüftete feuerfeste Wand, insbesondere für einen Verbrennungsofen.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3561385A1 (fr) 2018-04-26 2019-10-30 Mokesys Ag Mur réfractaire avec couche anti-corrosion

Also Published As

Publication number Publication date
EP3243027B1 (fr) 2018-09-26
PL3243027T3 (pl) 2019-04-30
CH710597A1 (de) 2016-07-15
ES2703583T3 (es) 2019-03-11
EP3243027A1 (fr) 2017-11-15
DK3243027T3 (en) 2019-01-14

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