EP1001213A1 - Schutzschalen gegen Korrosion und/oder Abrieb von einer Röhrenplatte und Verfahren zur Befestigung - Google Patents

Schutzschalen gegen Korrosion und/oder Abrieb von einer Röhrenplatte und Verfahren zur Befestigung Download PDF

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Publication number
EP1001213A1
EP1001213A1 EP99402446A EP99402446A EP1001213A1 EP 1001213 A1 EP1001213 A1 EP 1001213A1 EP 99402446 A EP99402446 A EP 99402446A EP 99402446 A EP99402446 A EP 99402446A EP 1001213 A1 EP1001213 A1 EP 1001213A1
Authority
EP
European Patent Office
Prior art keywords
key
tubes
shells
shell
panel
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
Application number
EP99402446A
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English (en)
French (fr)
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EP1001213B1 (de
Inventor
Jean-Pierre Aubin Edmond Durand
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.)
CNIM Groupe SA
Original Assignee
Constructions Industrielles de la Mediterrane CNIM SA
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 Constructions Industrielles de la Mediterrane CNIM SA filed Critical Constructions Industrielles de la Mediterrane CNIM SA
Publication of EP1001213A1 publication Critical patent/EP1001213A1/de
Application granted granted Critical
Publication of EP1001213B1 publication Critical patent/EP1001213B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/107—Protection of water tubes
    • 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
    • F23M5/04—Supports for linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • 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 present invention relates to a device for protection against corrosion and / or abrasion of a tube panel including a superheater of a boiler.
  • It also relates to a process for fixing shells protective at least one wall of the tube panel of such a boiler superheater.
  • the superheaters are installed in the boilers of production of superheated steam and more particularly boilers intended to recover heat from combustion of waste, especially industrial waste. These superheaters are the sensitive organs of boilers because the waste gases contain aggressive products, such as acid hydrochloric acid, sulfur oxides, various salts, etc, which corrode the superheaters.
  • the first consists in coating the panel with a sheet continuous of an adobe or refractory concrete poured or projected and fixed to the panel by anchoring elements welded to it.
  • this solution known has the disadvantages that metal anchors corrode and the covering layer of rammed earth or concrete refractory degrades quickly especially in areas most exposed, which requires repairs important which, moreover, are difficult and long to be carried out on site, since it is necessary to clean the surfaces, re-weld defective anchors and replace in place of adobe or refractory concrete, all in one very small space.
  • the second technique is to use coins or prefabricated refractory protective shells, in particular in silicon carbide, fixed to the walls of the superheater panel by metallic elements of attachment fixed by welding to the panel.
  • this known solution requires the use of metal fasteners, which destroy themselves by corrosion, resulting in therefore the fall of the protective shells and it is so difficult to make the repairs that are long and expensive.
  • the object of the present invention is to eliminate the disadvantages above of the solutions known in proposing a device for protecting a panel superheater of a boiler by shells of protection fixed to this panel by elements non corroding attachment which allow carry out repairs on site easily and fast.
  • the device for protection against corrosion and / or abrasion of a tube panel including a superheater of a boiler, rigidly connected to each other so spaced, including attached protective shells by hooking elements on at least one of the sides of the panel by taking the shape of it, is characterized in that each hooking element includes a key housed removably between two tubes adjacent resting on a transverse part of connection of the two tubes and having at least one part free end capable of engaging in a housing of the part of the protective shell between the two adjacent tubes so as to allow the attachment of the shell and its retention by gravity and / or sealing.
  • the key comprises two parts of free ends located on both sides of the panel and able to engage respectively in two two-part housings located between the two tubes two protective shells respectively so as to fix by hanging these on each side of the panel.
  • the key comprises a single end portion free of attachment and has its opposite free end portion comprising two shoulders resting on the side of the part transverse connection of the two adjacent tubes opposite the protective shell and on the same side another cross-section connecting the two tubes located above the first.
  • the key is shaped like a plate extending substantially parallel to the two adjacent tubes and perpendicular to the longitudinal median plane of these, resting by its lower edge on the part transverse connection of the two adjacent tubes and having its two parts of ends free of attachment comprising two directed hooking spouts respectively upward opposite the bottom edge and diverging one of the other.
  • the two hooking nozzles of the key in the shape of plate are arranged symmetrically to the median plane transverse of the key.
  • the key is also in the form of a plate extending substantially parallel to the two adjacent tubes and perpendicular to the longitudinal median plane of these, resting by its lower edge on the part transverse connection of the two tubes and having its free hanging end part comprising a spout directed upward opposite the bottom edge and its end part opposite two shoulders forming head of a T.
  • the key is housed in an opening, in the form of oblong or rectangular window hole, made parallel to the two adjacent tubes in a fin connecting the two tubes and whose lower edge constitutes the transverse support part of the key.
  • the aforementioned housing of the protective shell extends parallel to the two adjacent tubes over a length greater than the height of the end portion to hook the key to allow insertion of this end part in the housing whose upper part is of form conjugate to the beak for hooking the key.
  • the space remaining between the lower part of the housing through the protective shell and the corresponding lower edge of the key is filled with concrete, preferably silicon carbide, to to seal the shell on the key and prevent its dropout.
  • the sides of the two transverse parts of connection of the two adjacent tubes and on which supports the transverse branch of the T of the key are formed by the side of the fin connection of the two adjacent tubes opposite the shell of protection.
  • the key with support head can be inserted through the connecting fin of the two adjacent tubes by the side where the shell will be hung of protection by first engaging the end upper of the transverse branch of the key of the key through the opening of the fin by tilting the key, whose upper edge located between the branch of the T and the hooking spout is supported on the edge top of the opening and then rotating the key around its fulcrum in one direction allowing passage through the opening of the lower end of the transverse branch of the T having a curved external profile and bringing in support by gravity key on the lower edge of the opening fin.
  • the key and the protective shells are made made of non-corroding material, in particular ceramic and preferably based on silicon carbide for him also provide good thermal conduction.
  • the key comprises at its lower edge at least one substantially semicircular cut to hold the concrete filling the space between key and part bottom of the protective shell housing.
  • a putty made of flexible refractory material is placed between the protective shells and the tube panel and between the protective shells.
  • the width of the aforementioned opening of each shell of protection is slightly greater than the thickness of the plate-shaped key.
  • Each protective shell includes at its ends upper and lower a tongue and a groove allowing the shells to be placed one above the other others by interlocking from the bottom of the panel of tubes to the top of it.
  • each protective shell in the row greater than a reduced height compared to others protective shells of the lower rows and the space left free above this shell is clogged with concrete, preferably based on carbide silicon.
  • the invention also provides a method of fixing protective shells on at least one wall of a panel tubes, in particular from a boiler superheater, connected to each other by fins of connection, the shells being shaped so as to follow the panel wall in the fixing position of these and which is characterized in that it consists of have keys, made of non-corroding material, especially ceramic preferably based on carbide silicon giving it good thermal conduction, each having at least one free end portion with a beak hooking, respectively in shaped openings oblong hole or rectangular window made at through the connecting fins so as to make protrusion of these fins, to hang each shell of protection at the key hooking spout correspondent committing to combined accommodation made in the part of the shell between two adjacent tubes, so as to successively produce bottom to top, rows of protective shells superimposed maintained by gravity and / or sealing on the corresponding keys.
  • keys made of non-corroding material, especially ceramic preferably based on carbide silicon giving it good thermal conduction, each having at least one free end portion with
  • the method also consists in superimposing the shells protective columns.
  • Figures 1 to 8 show a first mode of realization of the device of the invention making it possible to attach protective shells to both sides of a flat panel of metal tubes constituting a boiler superheater, it being understood that this device is not limited to such an application.
  • Panel 1 includes vertical metal tubes 2 rigidly connected to each other spaced apart by fins 3 welded to the tubes 2 in which can circulate a heat transfer fluid.
  • Shells 4 conforming to the shape of the panel 1 are attached to both sides of it by elements attachment 5 so as to protect against corrosion the panel of tubes.
  • the protective shells 4 are of preferably fixed to panel 1 in rows and columns, but they can also be fixed in staggered rows without departing from the scope of the invention.
  • each attachment element 5 of two protective shells 4 located opposite one of the other on either side of the tube panel is constituted by a key better visible in FIG. 5, detachably housed in a hole-shaped opening oblong 6 made through a corresponding fin 3 extending parallel to the tubes 2.
  • the width of each opening 6 is slightly greater than the thickness of the key 5.
  • the key 5 may have a thickness about 20 mm and a height of about 80 mm, giving good mechanical resistance.
  • Each key 5 further includes at the bottom two fingerprints or cutouts 5b of semi-circular shape, symmetrical to the plane transverse median of the key and intended for hold in place a keying concrete as it is will see later.
  • the bottom edge of each key 5 is rounded as shown in Figure 6 of so as to adapt to the combined shape of the bottom edge the corresponding opening 6.
  • Each protective shell 4 comprises, in its part intermediate 4a fitting in the space between two adjacent tubes 2 and located between the two parts parallel semi-cylindrical hollow 4b, a housing 7 of the free end part of the key 5 so as to allow the attachment of the shell 4 to this part end of the key 5 and the maintenance of this shell by the key by gravity while waiting for the setting in place of the keying concrete.
  • Housing 7 of each shell 4 is in the form of a window made through the shell opening to its outer wall and having its longitudinal axis substantially parallel to the tubes 2.
  • each shell 4 has its upper part 7a, 7b of shape combined with one of the two hooking nozzles 5a of the key 5 and to the upper edge part 5c of the key extending the ramped part 5a1 of the spout corresponding attachment 5a.
  • Shell 4 shown Figures 7 and 8 is the one shown to the left of panel 1 with regard to FIG. 1 and is intended to be attached to the hanging spout 5a located to the left of the key 5 shown in FIG. 5.
  • the height h of each housing 7 defined between its lower edge 7c and its parallel upper edge 7b extending the ramp upper 7a for hooking the shell 4 to the key 5, is greater than the height of the key 5 for allow the key to pass through the shell.
  • the keys 5 and the shells of protection 4 are ceramic based on carbide silicon, allows them to present excellent corrosion resistance while having the property of conduct heat well.
  • Each key 5 is first inserted in its housing 6 by an operator located on one side of panel 1 and held in the housing in support by its edge lower on the lower edge of conjugate form of the opening 6. In this way, each key 5 is arranged substantially parallel to the two tubes adjacent 2 and perpendicular to the median plane longitudinal of these containing fin 3, making protrusion on either side of the latter. Then, the operator hooks a protective shell 4 to the side of panel 1 by introducing the end portion with a beak 5a of the key 5 in the housing 7 of the shell and releasing it to rest by gravity on the end of the key. Then, a operator located on the other side of the panel 1 hook the same way the other protective shell 4 at the same key 5 and these operations are repeated until coat both sides of the panel.
  • each key 5 is filled with keying concrete 8 ( Figure 2) based on silicon carbide, to prevent the unhooking of the shells.
  • Semicircular impressions 5b of each key 5 are filled with concrete 8 which allows the latter to be held in place.
  • the protective shells 4 are mounted at from the bottom of the tube panel to the top of it. As shown in Figures 4, 7 and 8, each shell 4 has a tongue at its upper part protruding 4c and at its bottom a groove conjugate 4d. This configuration allows you to stack the protective shells 4 by fitting a tongue upper shell in a lower groove another shell above the first.
  • each shell 4 of the upper row is less than the height common height of the shells of the lower rows, so as to allow the placement of the shells of the upper row below the boiler ceiling P or shells already in place in the case of a protection repair.
  • the space remaining between the upper part of the shells of the upper row and this ceiling P is filled with a concrete 8a based on silicon carbide.
  • the ceiling P may include impressions and semi-hemispherical cavities P1 and P2 filled with concrete 8a to keep it in place.
  • a putty in flexible refractory material 9, such as for example Fraxfil, is interposed between the protective shells 4 and the tube panel 1 and between the shells 4 of so as to allow free expansion of the shells.
  • this refractory putty constitutes a barrier to gas circulation against the tubes 2 of the panel superheater 1.
  • Figure 2 also shows that concrete 10 based on silicon carbide is poured along the vertical space between two shells ends surrounding each last tube 2 of the panel superheater 1.
  • Figures 9 and 10 show a second mode of realization of the device of the invention according to which a single wall of panel 1 of tubes 2 is covered by protective shells 4, identical to those of first embodiment, and only one of which is represented.
  • the key 10 for hooking a corresponding protective shell 4 is in plate shape with strength characteristics mechanical identical to those of key 5 and is having a general T-shape with the leg has a spout at its upper free end for hooking 10a to a shell 4 and the branch transverse 10b defines two shoulders e1 and e2.
  • the key 10 is engaged in a opening 6 in the shape of a rectangular window extending parallel to the tubes 2 and rests by its edge lower on the lower edge of conjugate shape of the window 6 projecting from the corresponding fin 3 on the side where the shell should be fixed 4.
  • the branch transverse 10b of the key 10 bears on the side of fin 3 opposite the side to be protected by the corresponding protective shell 4, so to constitute a stop for holding the key 10 in the opening 6.
  • the key 10 may include a semi-circular cutout (not shown) on its edge lower opposite the spout 10a to allow the maintenance of the concrete filling the space between the key 10 and the lower part of the opening 7.
  • the key 10 is made of a material resistant to corrosion, especially ceramic and preferably based on silicon carbide, also giving it good heat conduction.
  • each protective shell 4 The fixing of each protective shell 4 is carried out by first inserting each key 10 into the opening 6 so that the transverse branch 10b of this is supported on the corresponding side of the fin 3 and that the key 10 occupies a position substantially parallel to the tubes 2 and perpendicular to this fin. Then the protective shell is placed in front of the free end of the beak leg 10a of the key 10 to introduce it into the housing 7 of the shell which is fixed by hooking to the key 10 and held there by gravity.
  • Figure 10 shows an alternative embodiment of the key 10 which, instead of being inserted through the side of the panel 1 opposite to that where the shells of protection 4, is introduced on the same fixing side of these shells.
  • the transverse branch 10b of the key 10 at one of its ends called lower 10b1 with an arched external profile for allow the introduction of this branch through the opening 6 of the fin 3 as explained now.
  • the key 10 is inclined relative to the fin 3 so as to allow the engagement of the upper end 10b2 of the transverse branch 10b of the key as shown in dashed lines on the Figure 10 which also shows that the upper edge of the key 10 located between the end 10b2 and the spout hook 10a is supported on the upper edge of opening 6 to constitute a fulcrum.
  • the key 10 is pivoted around this fulcrum clockwise to allow the passage of the arched end 10b1 whose radius allows rotation and passage of the lower end 10b1 through the opening 6.
  • the key 10 is engaged in opening 6 as indicated by a strong line at Figure 10 with the transverse branch 10b in support on the side of the fin 3 opposite the side where must be attached the corresponding protective shell 4, the key 10 is lowered until it rests by its lower edge on the corresponding lower edge of the opening 6.
  • the protective shell 4 is fixed to panel 1 by hanging it on the hanging spout 10a of the key 10, the weight of this shell allowing it to be held on the wall of the panel 1. If one wishes to obtain a waterproofness of this panel combustion gases, which is the case for combustion chamber, it is possible to provide a sealing box 11, shown in dotted lines at Figure 10, behind each opening 6 in the fins 3.
  • flexible refractory putty can be also used as in the first mode of realization to allow sealing and free expansion of the shells attached to the side of the panel 1, between them or in relation to this panel.
  • protective shells of the upper row of the second embodiment have a height less than protective shells in the lower rows for allow the mounting of this row, the space between ceiling and upper shells being blocked by concrete based on silicon carbide as in the first embodiment.
  • the fixing device of the invention described above allows mounting of extremely protective shells simple and there is no workpiece unlike to previously known devices. So after a sanding the tube panel, just install the shells in the manner explained above. In addition, same protective shells can be installed on one or both sides of the panels to be protected since, according to the invention, it suffices to change the type key to fix the protective shells to one sides of the panel or both sides of the panel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP19990402446 1998-11-10 1999-10-06 Schutzschalen gegen Korrosion und/oder Abrieb von einer Röhrenplatte und Verfahren zur Befestigung Expired - Lifetime EP1001213B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9814155 1998-11-10
FR9814155A FR2785670B1 (fr) 1998-11-10 1998-11-10 Dispositif de protection contre la corrosion et/ou l'abrasion d'un panneau de tubes notamment d'un surchauffeur d'une chaudiere et procede de fixation de coquilles de protection a au moins une paroi d'un tel panneau

Publications (2)

Publication Number Publication Date
EP1001213A1 true EP1001213A1 (de) 2000-05-17
EP1001213B1 EP1001213B1 (de) 2003-05-07

Family

ID=9532592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990402446 Expired - Lifetime EP1001213B1 (de) 1998-11-10 1999-10-06 Schutzschalen gegen Korrosion und/oder Abrieb von einer Röhrenplatte und Verfahren zur Befestigung

Country Status (5)

Country Link
EP (1) EP1001213B1 (de)
DE (1) DE69907604T2 (de)
ES (1) ES2198119T3 (de)
FR (1) FR2785670B1 (de)
PT (1) PT1001213E (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1172606A1 (de) * 2000-07-12 2002-01-16 V.A.I. Société à Responsabilité Limitée Vorrichtung zur Beschichtung und zum Schutz von Röhren von Verbrennungsöfen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007017809U1 (de) * 2007-12-20 2009-04-23 VÖWA GmbH Isolierschlauch
DE102013000424A1 (de) * 2013-01-14 2014-07-17 Martin GmbH für Umwelt- und Energietechnik Verfahren und Vorrichtung zum Schutz von Wärmetauscherrohren sowie Keramikbauteil
FR3102540B1 (fr) 2019-10-24 2022-07-15 Saint Gobain Ct Recherches Tuile refractaire
CN113721302B (zh) * 2021-08-12 2024-02-23 芜湖福记恒机械有限公司 一种铜水套通钢球检测装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE578964C (de) * 1933-06-19 Strebelwerk G M B H Feuerraumwandbekleidung fuer Gliederkessel
FR2624952A1 (fr) * 1987-12-22 1989-06-23 Stein Industrie Dispositif de protection d'un ecran de chaudiere de recuperation de chaleur et procede de fabrication de ce dispositif
FR2700603A1 (fr) * 1993-01-15 1994-07-22 Cnim Dispositif de protection contre la corrosion et/ou l'abrasion de tubes d'un élément surchauffeur d'une chaudière.
EP0854321A1 (de) * 1996-08-07 1998-07-22 Mitsubishi Heavy Industries, Ltd. Feuerfeste schutzstruktur für wasserrohre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE578964C (de) * 1933-06-19 Strebelwerk G M B H Feuerraumwandbekleidung fuer Gliederkessel
FR2624952A1 (fr) * 1987-12-22 1989-06-23 Stein Industrie Dispositif de protection d'un ecran de chaudiere de recuperation de chaleur et procede de fabrication de ce dispositif
FR2700603A1 (fr) * 1993-01-15 1994-07-22 Cnim Dispositif de protection contre la corrosion et/ou l'abrasion de tubes d'un élément surchauffeur d'une chaudière.
EP0854321A1 (de) * 1996-08-07 1998-07-22 Mitsubishi Heavy Industries, Ltd. Feuerfeste schutzstruktur für wasserrohre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1172606A1 (de) * 2000-07-12 2002-01-16 V.A.I. Société à Responsabilité Limitée Vorrichtung zur Beschichtung und zum Schutz von Röhren von Verbrennungsöfen

Also Published As

Publication number Publication date
FR2785670B1 (fr) 2001-01-05
ES2198119T3 (es) 2004-01-16
EP1001213B1 (de) 2003-05-07
PT1001213E (pt) 2003-09-30
FR2785670A1 (fr) 2000-05-12
DE69907604D1 (de) 2003-06-12
DE69907604T2 (de) 2004-03-25

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