EP2111518A2 - Hinterlüfteter korrosionsschutz - Google Patents
Hinterlüfteter korrosionsschutzInfo
- Publication number
- EP2111518A2 EP2111518A2 EP07846744A EP07846744A EP2111518A2 EP 2111518 A2 EP2111518 A2 EP 2111518A2 EP 07846744 A EP07846744 A EP 07846744A EP 07846744 A EP07846744 A EP 07846744A EP 2111518 A2 EP2111518 A2 EP 2111518A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- corrosion protection
- gas
- protection according
- combustion chamber
- pipe 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.)
- Granted
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 15
- 238000005260 corrosion Methods 0.000 title claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 13
- 238000005253 cladding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/025—Devices and methods for diminishing corrosion, e.g. by preventing cooling beneath the dew point
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/107—Protection of water tubes
- F22B37/108—Protection of water tube walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
- F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
-
- 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
- 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 the corrosion protection of a pipe wall by means of the pipe wall on the firing side mounted at a distance ceramic plates, wherein the gap between the pipe wall and ceramic plates can be traversed by a barrier gas stream.
- German Utility Model 90 16 206 has proposed constantly pressurizing the interspace with external air under pressure, this pressure always being higher should lie as the one in the combustion chamber. Such additional pressure requires considerable additional technical measures, in particular a blower.
- the object of the invention is to improve a lining of the type mentioned so that a sufficient protection of the pipe wall is achieved without having to produce an increased air pressure in the space.
- inlet openings are arranged in the pipe wall through which a gas, in particular outside air is sucked into the space. Since there is always a lower pressure in the combustion chamber than in the atmosphere and due to leaks in the ceramic plate cladding, this negative pressure at least partially continues in the intermediate space, the intermediate space sucks in air from the environment through the inlet openings located in the pipe wall, so that the intermediate space is always flowed through and thus a sufficient protection of the pipe wall against aggressive gases is given.
- such a design is structurally simple and not dependent on the function of additional technical facilities.
- the negative pressure in the combustion chamber ensures that there is a pressure at each point of the air gap which is always higher than that at the same point on the side of the combustion chamber. This ensures that no gas flow can take place from the combustion chamber into the air gap. For an additional technical device for external pressure increase is not necessary.
- the inlet openings are arranged in particular as inlet connection in the webs connecting the tubes.
- the inlet openings, in particular the inlet nozzles are connected to a flow-through, in particular, regulated gas collecting system.
- the inlet openings and / or the collecting system be provided with a non-return valve (s) and / or a pendulum flap as a non-return valve / are, which close at a resulting pressure in the combustion chamber.
- a particularly secure flow through the ceramic plate cladding from the intermediate space to the firebox, is achieved when additional outlet openings are provided in the ceramic tile cladding. It is also advantageous if the gas-permeable ceramic plate wall can be adjusted by the use of different plates and / or joint materials in their gas permeability. It is particularly advantageous if the outlet openings are arranged above the inlet openings, so that a flow through the intermediate space is ensured from bottom to top. It is also proposed that the gas emitting into the combustion chamber has a blocking function, in particular for the noxious gas which has emanated from the combustion chamber.
- FIG. 1 shows a first embodiment in a vertical section through a section through the lining of a firebox
- Fig. 2 shows a second embodiment in a vertical section.
- the combustion chamber 1, for example, of a combustion furnace is delimited by tube walls 2 having a plurality of mutually parallel metallic tubes 3 which are arranged at equal intervals from each other.
- the tubes 3 are flowed through by liquid to dissipate heat.
- the spaces between the tubes 3 are filled by metal webs 4, which extend parallel to the tubes and are welded to the outside, so that the tubes 3 form a closed tube wall 2 with the webs 4.
- the tubes 3 are arranged vertically.
- the pipe wall 2 On the side facing the combustion chamber 1, the pipe wall 2 is covered by ceramic plates 5, which are fastened to the pipes and / or webs. In this case, it is ensured that the layer of ceramic plates 5 forms such a large distance with the tube wall 2 that there is a gap 6 between the ceramic plate layer and the tube wall.
- inlet openings 7 In the webs 4 are inlet openings 7, is sucked through the outside air into the gap 6, since the pressure P1 in the furnace is always lower than the pressure P2 outside the tube wall or the incinerator.
- a sleeve 8 is attached to the outside of the inlet openings 7 in each case as an inlet connection, so that the outside air sucked into the intermediate space 6 flows through the sleeve 8.
- a check valve 9 is arranged, which can be designed as a ball valve and ensures that through the sleeve and the inlet opening 7 air can flow only in the direction of the firebox. This prevents aggressive gases from being able to penetrate into the interspace 6 when the overpressure that arises in the combustion chamber is exceeded.
- outlet openings 10 can also be arranged in the ceramic plates 5 and / or between them. In this case, the outlet openings 10 are generally higher than the inlet openings
- the degree of gas permeability of the ceramic plate wall can also be adjusted by the use of different plates and / or different joint materials.
- the inlet openings 7 and in particular the sleeves 8 are connected as inlet nozzle to a Gassammeisystem whose flow is preferably controlled. Also, the gap / air gap in its width is infinitely adjustable.
- metal armature 11 are shown, which are welded to the webs 4 and carry with their front free, in the vertical section T-shaped end of the ceramic plates 5.
- the second embodiment shown in FIG. 2 differs from the first in that the outlet openings 10 are arranged in the region of the anchors in the plates 5 and / or between two plates 5. Alternatively, however, it is also possible for a filler to be introduced between two plates 5.
- the inlet openings 7 are covered by an air inlet chamber 12, which is connected to an air supply 13, wherein in the chamber 12, a valve flap, in particular pendulum flap 14 controls the air supply and keeps away at an overpressure in the combustion chamber harmful gas from the air gap and boiler house.
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)
- Incineration Of Waste (AREA)
- Furnace Details (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006062325A DE102006062325A1 (de) | 2006-12-22 | 2006-12-22 | Hinterlüfteter Korrosionsschutz |
PCT/EP2007/010140 WO2008080457A2 (de) | 2006-12-22 | 2007-11-22 | Hinterlüfteter korrosionsschutz |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2111518A2 true EP2111518A2 (de) | 2009-10-28 |
EP2111518B1 EP2111518B1 (de) | 2013-08-14 |
Family
ID=39465775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07846744.6A Active EP2111518B1 (de) | 2006-12-22 | 2007-11-22 | Hinterlüfteter korrosionsschutz |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2111518B1 (de) |
DE (1) | DE102006062325A1 (de) |
WO (1) | WO2008080457A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009039389A1 (de) * | 2009-08-31 | 2011-03-03 | Saint-Gobain Industriekeramik Düsseldorf Gmbh | Schutzsystem für eine Ofeninnenwand |
DE102013103083B3 (de) * | 2013-03-26 | 2014-05-15 | Jünger+Gräter GmbH | Aufnahme für Anker einer feuerfesten Innenschicht für Industrieöfen |
JP6221186B2 (ja) * | 2015-12-09 | 2017-11-01 | 三菱重工環境・化学エンジニアリング株式会社 | 水管保護用耐火物 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD438A (de) * | ||||
DE483C (de) | 1877-09-08 | F. WICKE in Barmen | Apparat und Verfahren zur Darstellung von krystallklarem Eis | |
US1786593A (en) * | 1927-12-13 | 1930-12-30 | Carborundum Co | Furnace |
CH134558A (de) * | 1928-11-22 | 1929-08-15 | Sulzer Ag | Dampfkessel. |
CH559878A5 (de) * | 1972-11-30 | 1975-03-14 | Kuenstler Hans | |
DE3806044A1 (de) * | 1988-02-26 | 1989-08-31 | Steinmueller Gmbh L & C | Feuerraumwand |
DE9016206U1 (de) | 1990-11-29 | 1991-02-14 | Jünger & Gräter GmbH & Co KG, 6830 Schwetzingen | Anordnung einer feuerfesten Auskleidung mittels Stahlrohraggregate abdeckenden Platten, wobei die Platten mittels an die Rohre verbindenden Rohrflossen angeschweißten Halterungen fixiert sind |
DE10257305A1 (de) * | 2002-12-07 | 2004-06-17 | Kümmel, Joachim, Dipl.-Ing. | Verfahren und Vorrichtung zum Überhitzen von Dampf in korrosiver Rauchgasatmosphäre |
-
2006
- 2006-12-22 DE DE102006062325A patent/DE102006062325A1/de not_active Ceased
-
2007
- 2007-11-22 EP EP07846744.6A patent/EP2111518B1/de active Active
- 2007-11-22 WO PCT/EP2007/010140 patent/WO2008080457A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008080457A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006062325A1 (de) | 2008-07-03 |
WO2008080457A2 (de) | 2008-07-10 |
EP2111518B1 (de) | 2013-08-14 |
WO2008080457A3 (de) | 2011-05-26 |
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