EP3243027A1 - Fireproof wall, in particular for a combustion furnace - Google Patents
Fireproof wall, in particular for a combustion furnaceInfo
- Publication number
- EP3243027A1 EP3243027A1 EP16700521.4A EP16700521A EP3243027A1 EP 3243027 A1 EP3243027 A1 EP 3243027A1 EP 16700521 A EP16700521 A EP 16700521A EP 3243027 A1 EP3243027 A1 EP 3243027A1
- Authority
- EP
- European Patent Office
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 57
- 238000009434 installation Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract 5
- 239000007789 gas Substances 0.000 description 83
- 239000011261 inert gas Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 241001508764 Wallago Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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.
Landscapes
- 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
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16700521T PL3243027T3 (en) | 2015-01-07 | 2016-01-06 | Fireproof wall, in particular for a combustion furnace |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00016/15A CH710597A1 (en) | 2015-01-07 | 2015-01-07 | Refractory wall, in particular for an incinerator. |
PCT/CH2016/000004 WO2016109904A1 (en) | 2015-01-07 | 2016-01-06 | Fireproof wall, in particular for a combustion furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3243027A1 true EP3243027A1 (en) | 2017-11-15 |
EP3243027B1 EP3243027B1 (en) | 2018-09-26 |
Family
ID=52648764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16700521.4A Active EP3243027B1 (en) | 2015-01-07 | 2016-01-06 | Fireproof wall, in particular for a combustion furnace |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3243027B1 (en) |
CH (1) | CH710597A1 (en) |
DK (1) | DK3243027T3 (en) |
ES (1) | ES2703583T3 (en) |
PL (1) | PL3243027T3 (en) |
WO (1) | WO2016109904A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH714933B1 (en) | 2018-04-26 | 2021-06-15 | Mokesys Ag | Refractory wall, especially for an incinerator. |
Family Cites Families (7)
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 |
JPS5857658B2 (en) * | 1980-04-02 | 1983-12-21 | 工業技術院長 | Heat shielding structure for walls exposed to high heat using ceramics |
US4426937A (en) * | 1980-08-08 | 1984-01-24 | Sietmann Vernon H | Heat exchanger furnace |
ATE42631T1 (en) * | 1984-05-18 | 1989-05-15 | Theodor Koch | BOILER FIRING ROOM INNER WALL. |
DE9107273U1 (en) * | 1991-06-10 | 1992-08-20 | Noell - K + K Abfalltechnik GmbH, 4040 Neuss | Ceramic lining of combustion chamber walls |
DE19706077A1 (en) * | 1997-02-17 | 1998-08-20 | Loesche Gmbh | Hot gas generator with burner for dust fuels |
CH699406A2 (en) * | 2008-08-26 | 2010-02-26 | Mokesys Ag | Ventilated refractory wall, in particular for an incinerator. |
-
2015
- 2015-01-07 CH CH00016/15A patent/CH710597A1/en not_active Application Discontinuation
-
2016
- 2016-01-06 EP EP16700521.4A patent/EP3243027B1/en active Active
- 2016-01-06 WO PCT/CH2016/000004 patent/WO2016109904A1/en active Application Filing
- 2016-01-06 DK DK16700521.4T patent/DK3243027T3/en active
- 2016-01-06 PL PL16700521T patent/PL3243027T3/en unknown
- 2016-01-06 ES ES16700521T patent/ES2703583T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
PL3243027T3 (en) | 2019-04-30 |
EP3243027B1 (en) | 2018-09-26 |
WO2016109904A1 (en) | 2016-07-14 |
CH710597A1 (en) | 2016-07-15 |
ES2703583T3 (en) | 2019-03-11 |
DK3243027T3 (en) | 2019-01-14 |
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