EP1674815B1 - Heat exchanger for cooling a particle laden hot gas - Google Patents

Heat exchanger for cooling a particle laden hot gas Download PDF

Info

Publication number
EP1674815B1
EP1674815B1 EP04030220A EP04030220A EP1674815B1 EP 1674815 B1 EP1674815 B1 EP 1674815B1 EP 04030220 A EP04030220 A EP 04030220A EP 04030220 A EP04030220 A EP 04030220A EP 1674815 B1 EP1674815 B1 EP 1674815B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
layer
erosion
millimetres
thickness
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.)
Active
Application number
EP04030220A
Other languages
German (de)
French (fr)
Other versions
EP1674815A1 (en
Inventor
Dieter Bormann
Carsten Birk
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.)
Borsig GmbH
Original Assignee
Borsig 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 Borsig GmbH filed Critical Borsig GmbH
Priority to ES04030220T priority Critical patent/ES2281744T3/en
Priority to DK04030220T priority patent/DK1674815T3/en
Priority to AT04030220T priority patent/ATE356330T1/en
Priority to EP04030220A priority patent/EP1674815B1/en
Priority to DE502004003178T priority patent/DE502004003178D1/en
Priority to US11/254,000 priority patent/US7237601B2/en
Publication of EP1674815A1 publication Critical patent/EP1674815A1/en
Application granted granted Critical
Publication of EP1674815B1 publication Critical patent/EP1674815B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding

Definitions

  • the invention relates to a heat exchanger for cooling a hot gas comprising solid particles with the features of the preamble of claim 1.
  • a generic heat exchanger is known from EP 0 567 674 B1, which is used for cooling of synthesis gas produced in a coal gasification plant.
  • the gas inlet-side tube plate is covered with a ceramic layer for protection against erosion and high-temperature corrosion.
  • the ceramic layer consists of individual juxtaposed ceramic spouts, which in the upper part of parallelepiped abutting outer edges and in the lower part have an opening which projects into the heat exchanger tubes.
  • Under the grommets is on the tube plate, the weld and the pipe inlets a protective layer of metallic adhesive layer and ceramic layer. This protective layer becomes effective when one or more of the grommets are destroyed.
  • the invention has for its object to protect the generic heat exchanger easier and more effective against erosion.
  • the combined protective layer can be applied to all hazardous areas during the course of a coating process and offers both vertical and oblique impact the solid particles provide optimal erosion protection. It has surprisingly been found that a metallic protective layer at impact angles of the solid particles of 90 degrees to the tube plate is erosion resistant than a ceramic protective layer. However, a ceramic layer at impact angles by 45 degrees to the tube plate - ie at oblique impact z. B. on the weld - a better erosion resistance than the metallic layer.
  • the heat exchanger consists of a tube bundle of straight heat exchanger tubes 1, which are held in each case a tube plate 2 on both sides of the tube bundle.
  • the tube bundle is enclosed by an outer jacket 3 which, together with the respective tube plates 2, delimits an interior through which boiling and high-pressure water flows.
  • an end chamber 4 which is provided with a nozzle 5 for supplying or discharging the gas.
  • the end chamber 4 expands conically starting from the nozzle 5 to the diameter of the tube plate 2. All parts of the heat exchanger are made of a heat-resistant steel.
  • the tube plate 2 is penetrated by bores 6, in each of which one of the heat exchanger tubes 1 is inserted concentrically and welded by a weld 7 to the tube plate 2 (FIG. 2).
  • the weld 7 starts at the inner edge of the heat exchanger tube and is designed as a concave fillet weld.
  • the brought up by the end chamber, hot gas strikes the tube plate 2 and flows through the holes 6 of the tube plate 2 along the weld 7 in the heat exchanger tubes 1.
  • the entrained by the gas solid particles meet perpendicular to the front side of the tube plate 2 and obliquely to the weld 7 and lead there to erosion. Erosion also occurs due to turbulence in the inlet region of the heat exchanger tubes 1.
  • the front side of the tube plate 2, the weld 7 on the inner edge of each heat exchanger tube 1 and the inlet region 1 a of the heat exchanger tubes 1 are coated with a three-layer protective layer 8.
  • the protective layer 8 consists of an adhesive layer 9 applied to the surface of the tube plate 2, the weld seam 7 on the inner edge of each heat exchanger tube 1 and the inside of each heat exchanger tube 1 in the inlet region 1a.
  • the adhesive layer 9 serves as a bonding agent for the following layers, which form the actual erosion protection.
  • On the adhesive layer 9 is a high temperature and erosion resistant metal layer 10 and on the metal layer 10 is a high temperature and erosion resistant ceramic layer 11 is applied.
  • the individual layers are applied by flame spraying.
  • the metal layer 10 and the adhesive layer 9 are each made of a nickel-based alloy alloyed with one or more of aluminum, cerium, iron, molybdenum and silicon.
  • the ceramic layer 11 consists of calcium stabilized zirconia.
  • the entire protective layer 8 is 0.5 to 1.5 mm, preferably about 1 mm thick.
  • the adhesion layer 9 has a thickness of approximately 0.1 to 0.5 mm, preferably 0.2 mm
  • the metal layer 10 has a thickness of approximately 0.2 to 0.8 mm, preferably 0.4 mm
  • the ceramic layer 11 a thickness of about 0.1 to 0.6 mm, preferably 0.3 mm.

Abstract

The exchanger has tube plates disposed at ends of a casing. A hot gas flows through heat exchanger tubes surrounded by the casing. Ends of the tubes are welded into bores of the plates via weld seams. A protective layer has a metal layer disposed between an adhesive layer (9) and a ceramic layer. The adhesive layer is applied to surfaces of the plates and to the seam at inner edges and inner sides of the tubes, respectively.

Description

Die Erfindung betrifft einen Wärmetauscher zum Kühlen eines Feststoffpartikel enthaltenden heißen Gases mit den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to a heat exchanger for cooling a hot gas comprising solid particles with the features of the preamble of claim 1.

Ein gattungsgemäßer Wärmetauscher ist aus der EP 0 567 674 B1 bekannt, der zur Kühlung von in einer Kohlevergasungsanlage erzeugtem Synthesegas dient. Bei dem bekannten Wärmetauscher ist die gaseintrittsseitige Rohrplatte zum Schutz gegen Erosion und Hochtemperaturkorrosion mit einer keramischen Schicht bedeckt. Die keramische Schicht besteht aus einzelnen nebeneinander angeordneten keramischen Tüllen, die im oberen Teil quaderförmige aneinander stoßende Außenkanten und im unteren Teil eine Öffnung aufweisen, die in die Wärmetauscherrohre hineinragt. Unter den Tüllen befindet sich auf der Rohrplatte, der Schweißnaht und den Rohreinläufen eine Schutzschicht aus metallischer Haftschicht und Keramikschicht. Diese Schutzschicht wird wirksam, wenn eine oder mehrere der Tüllen zerstört sind.A generic heat exchanger is known from EP 0 567 674 B1, which is used for cooling of synthesis gas produced in a coal gasification plant. In the known heat exchanger, the gas inlet-side tube plate is covered with a ceramic layer for protection against erosion and high-temperature corrosion. The ceramic layer consists of individual juxtaposed ceramic spouts, which in the upper part of parallelepiped abutting outer edges and in the lower part have an opening which projects into the heat exchanger tubes. Under the grommets is on the tube plate, the weld and the pipe inlets a protective layer of metallic adhesive layer and ceramic layer. This protective layer becomes effective when one or more of the grommets are destroyed.

Der Erfindung liegt die Aufgabe zugrunde, den gattungsgemäßen Wärmetauscher einfacher und wirksamer gegen Erosion zu schützen.The invention has for its object to protect the generic heat exchanger easier and more effective against erosion.

Die Aufgabe wird bei einem gattungsgemäßen Wärmetauscher erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.The object is achieved in a generic heat exchanger according to the invention by the characterizing features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

Die kombinierte Schutzschicht lässt sich im Verlauf eines Beschichtungsvorganges auf alle gefährdeten Bereiche aufbringen und bietet sowohl bei senkrechtem als auch bei schrägem Aufprall der Feststoffpartikel einen optimalen Erosionsschutz. Es hat sich überraschend gezeigt, dass eine metallische Schutzschicht bei Aufprallwinkeln der Feststoffpartikel von 90 Grad zur Rohrplatte erosionsbeständiger ist als eine keramische Schutzschicht. Jedoch zeigt eine keramische Schicht bei Aufprallwinkeln um 45 Grad zur Rohrplatte - also bei schrägem Aufprall z. B. auf die Schweißnaht - eine bessere Erosionsbeständigkeit als die metallische Schicht.The combined protective layer can be applied to all hazardous areas during the course of a coating process and offers both vertical and oblique impact the solid particles provide optimal erosion protection. It has surprisingly been found that a metallic protective layer at impact angles of the solid particles of 90 degrees to the tube plate is erosion resistant than a ceramic protective layer. However, a ceramic layer at impact angles by 45 degrees to the tube plate - ie at oblique impact z. B. on the weld - a better erosion resistance than the metallic layer.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in Folgendem näher erläutert. Es zeigen:

Fig. 1
den Längsschnitt durch den unteren Teil eines Wärmetauschers,
Fig. 2
die Einzelheit Z nach Fig. 1,
Fig. 3
eine Schutzschicht und
Fig. 4
die Draufsicht auf eine Rohrplatte eines Wärmetauschers nach Fig. 1.
An embodiment of the invention is illustrated in the drawing and is explained in more detail in the following. Show it:
Fig. 1
the longitudinal section through the lower part of a heat exchanger,
Fig. 2
the detail Z of Fig. 1,
Fig. 3
a protective layer and
Fig. 4
the top view of a tube plate of a heat exchanger of FIG. 1st

Von einem Wärmetauscher zur Kühlung von Spaltgas ist in Fig. 1 nur der eintrittsseitige Teil gezeigt. Der Wärmetauscher besteht aus einem Rohrbündel aus geraden Wärmetauscherrohren 1, die in jeweils einer Rohrplatte 2 zu beiden Seiten des Rohrbündels gehalten sind. Das Rohrbündel ist von einem äußeren Mantel 3 umschlossen, der zusammen mit den jeweiligen Rohrplatten 2 einen von siedendem und unter hohem Druck stehendem Wasser durchflossenen Innenraum begrenzt. An die Rohrplatte 2 schließt sich auf der gezeigten Gaseintrittsseite und auf der nicht gezeigten Gasaustrittsseite jeweils eine Endkammer 4 an, die mit einem Stutzen 5 zur Zuführung oder Abführung des Gases versehen ist. Die Endkammer 4 erweitert sich konisch ausgehend von dem Stutzen 5 auf den Durchmesser der Rohrplatte 2. Alle Teile des Wärmetauschers sind aus einem warmfesten Stahl gefertigt.From a heat exchanger for cooling cracking gas, only the inlet-side part is shown in FIG. The heat exchanger consists of a tube bundle of straight heat exchanger tubes 1, which are held in each case a tube plate 2 on both sides of the tube bundle. The tube bundle is enclosed by an outer jacket 3 which, together with the respective tube plates 2, delimits an interior through which boiling and high-pressure water flows. To the tube plate 2 is followed on the gas inlet side and on the gas outlet side, not shown, in each case an end chamber 4, which is provided with a nozzle 5 for supplying or discharging the gas. The end chamber 4 expands conically starting from the nozzle 5 to the diameter of the tube plate 2. All parts of the heat exchanger are made of a heat-resistant steel.

Die Rohrplatte 2 ist von Bohrungen 6 durchdrungen, in die jeweils konzentrisch eines der Wärmetauscherrohre 1 eingesetzt und durch eine Schweißnaht 7 mit der Rohrplatte 2 verschweißt ist (Fig. 2). Die Schweißnaht 7 setzt an der Innenkante des Wärmestauscherrohres an und ist als konkav gewölbte Kehlnaht ausgebildet. Das durch die Endkammer herangeführte, heiße Gas trifft auf die Rohrplatte 2 und strömt durch die Bohrungen 6 der Rohrplatte 2 entlang der Schweißnaht 7 in die Wärmetauscherrohre 1. Die von dem Gas mitgeführten Feststoffpartikel treffen senkrecht auf die Stirnseite der Rohrplatte 2 und schräg auf die Schweißnaht 7 und führen dort zu Erosion. Erosion tritt auch infolge von Verwirbelung in dem Einlaufbereich der Wärmetauscherrohre 1 auf. Zum Schutz gegen Erosion sind die Stirnseite der Rohrplatte 2, die Schweißnaht 7 an der Innenkante jedes Wärmetauscherrohres 1 und der Einlaufbereich 1a der Wärmetauscherrohre 1 mit einer dreilagigen Schutzschicht 8 überzogen.The tube plate 2 is penetrated by bores 6, in each of which one of the heat exchanger tubes 1 is inserted concentrically and welded by a weld 7 to the tube plate 2 (FIG. 2). The weld 7 starts at the inner edge of the heat exchanger tube and is designed as a concave fillet weld. The brought up by the end chamber, hot gas strikes the tube plate 2 and flows through the holes 6 of the tube plate 2 along the weld 7 in the heat exchanger tubes 1. The entrained by the gas solid particles meet perpendicular to the front side of the tube plate 2 and obliquely to the weld 7 and lead there to erosion. Erosion also occurs due to turbulence in the inlet region of the heat exchanger tubes 1. To protect against erosion, the front side of the tube plate 2, the weld 7 on the inner edge of each heat exchanger tube 1 and the inlet region 1 a of the heat exchanger tubes 1 are coated with a three-layer protective layer 8.

Gemäß Fig. 3 besteht die Schutzschicht 8 aus einer auf die Oberfläche der Rohrplatte 2, der Schweißnaht 7 an der Innenkante jedes Wärmetauscherrohres 1 und der Innenseite jedes Wärmetauscherohres 1 im Einlaufbereich 1a aufgebrachten Haftschicht 9. Die Haftschicht 9 dient als Haftvermittler für die folgenden Schichten, die den eigentlichen Erosionsschutz bilden. Auf die Haftschicht 9 ist eine hochtemperatur- und erosionsbeständige Metallschicht 10 und auf die Metallschicht 10 ist eine hochtemperatur- und erosionsbeständige Keramikschicht 11 aufgebracht.3, the protective layer 8 consists of an adhesive layer 9 applied to the surface of the tube plate 2, the weld seam 7 on the inner edge of each heat exchanger tube 1 and the inside of each heat exchanger tube 1 in the inlet region 1a. The adhesive layer 9 serves as a bonding agent for the following layers, which form the actual erosion protection. On the adhesive layer 9 is a high temperature and erosion resistant metal layer 10 and on the metal layer 10 is a high temperature and erosion resistant ceramic layer 11 is applied.

Die einzelnen Schichten werden durch Flammspritzen aufgetragen. Die Metallschicht 10 und die Haftschicht 9 bestehen jeweils aus einer Nickel-Basislegierung, die mit einem oder mehreren der Elemente Aluminium, Cer, Eisen, Molybdän und Silizium legiert ist. Die Keramikschicht 11 besteht aus mit Calcium stabilisiertem Zirkonoxid.The individual layers are applied by flame spraying. The metal layer 10 and the adhesive layer 9 are each made of a nickel-based alloy alloyed with one or more of aluminum, cerium, iron, molybdenum and silicon. The ceramic layer 11 consists of calcium stabilized zirconia.

Die gesamte Schutzschicht 8 ist 0,5 bis 1,5 mm, vorzugsweise etwa 1 mm dick. Beispielsweise weist die Haftschicht 9 eine Dicke von etwa 0,1 bis 0,5 mm, vorzugsweise 0,2 mm, die Metallschicht 10 eine Dicke von etwa 0,2 bis 0,8 mm, vorzugsweise 0,4 mm, und die Keramikschicht 11 eine Dicke von etwa 0,1 bis 0,6 mm, vorzugsweise 0,3 mm, auf.The entire protective layer 8 is 0.5 to 1.5 mm, preferably about 1 mm thick. For example, the adhesion layer 9 has a thickness of approximately 0.1 to 0.5 mm, preferably 0.2 mm, the metal layer 10 has a thickness of approximately 0.2 to 0.8 mm, preferably 0.4 mm, and the ceramic layer 11 a thickness of about 0.1 to 0.6 mm, preferably 0.3 mm.

Claims (5)

  1. Heat exchanger for cooling a hot gas containing solid material particles, consisting of heat exchange tubes (1), which are flowed through by the gas to be cooled and surrounded by a casing (3) and which are welded at the ends by way of a weld seam (7) in bores (6) of a respective tube plate (2), wherein the end face of the tube plate (2) at the gas inlet side, the inner wall of the bores (6), the weld seam (7) and the inlet region (1a) of the heat exchange tube (1) are coated with a protective coating (8) consisting of a metallic adhesion layer (9) and a high-temperature and erosion-resistant ceramic layer (11), characterised in that a high-temperature and erosion-resistant metal layer (10) is applied between the metallic adhesion layer (9) and the high-temperature and erosion-resistant ceramic layer (11).
  2. Heat exchanger according to claim 1, characterised in that the metal layer (10) and the adhesion layer (9) each consist of an alloy on a nickel basis, which is alloyed with aluminium, cerium, iron, molybdenum and silicon.
  3. Heat exchanger according to claim 1 or 2, characterised in that the ceramic layer (11) consists of zirconium oxide stabilised with calcium.
  4. Heat exchanger according to one of claims 1 to 3, characterised in that the protective coating (8) has a total thickness of 0.5 to 1.5 millimetres.
  5. Heat exchanger according to claim 4, characterised in that the adhesion layer (9) has a thickness of approximately 0.2 millimetres, the metal layer (10) a thickness of approximately 0.4 millimetres and the ceramic layer (11) a thickness of approximately 0.3 millimetres.
EP04030220A 2004-12-21 2004-12-21 Heat exchanger for cooling a particle laden hot gas Active EP1674815B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES04030220T ES2281744T3 (en) 2004-12-21 2004-12-21 HEAT EXCHANGER TO REFRIGER A HOT GAS CONTAINING SOLID PARTICLES.
DK04030220T DK1674815T3 (en) 2004-12-21 2004-12-21 Heat exchanger for cooling hot gas containing solid particles
AT04030220T ATE356330T1 (en) 2004-12-21 2004-12-21 HEAT EXCHANGER FOR COOLING A HOT GAS CONTAINING SOLID PARTICLES
EP04030220A EP1674815B1 (en) 2004-12-21 2004-12-21 Heat exchanger for cooling a particle laden hot gas
DE502004003178T DE502004003178D1 (en) 2004-12-21 2004-12-21 Heat exchanger for cooling a hot gas containing solid particles
US11/254,000 US7237601B2 (en) 2004-12-21 2005-10-19 Heat exchanger for cooling a hot gas that contains solid particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04030220A EP1674815B1 (en) 2004-12-21 2004-12-21 Heat exchanger for cooling a particle laden hot gas

Publications (2)

Publication Number Publication Date
EP1674815A1 EP1674815A1 (en) 2006-06-28
EP1674815B1 true EP1674815B1 (en) 2007-03-07

Family

ID=34927880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04030220A Active EP1674815B1 (en) 2004-12-21 2004-12-21 Heat exchanger for cooling a particle laden hot gas

Country Status (6)

Country Link
US (1) US7237601B2 (en)
EP (1) EP1674815B1 (en)
AT (1) ATE356330T1 (en)
DE (1) DE502004003178D1 (en)
DK (1) DK1674815T3 (en)
ES (1) ES2281744T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2115375A1 (en) * 2007-01-31 2009-11-11 Behr GmbH & Co. KG Heat exchanger
US10126021B2 (en) * 2016-07-15 2018-11-13 General Electric Technology Gmbh Metal-ceramic coating for heat exchanger tubes of a central solar receiver and methods of preparing the same
JP6907500B2 (en) * 2016-10-13 2021-07-21 株式会社Ihi Heat treatment equipment
SI3376150T1 (en) 2017-03-14 2019-11-29 Alfa Laval Olmi S P A Protection device for a shell-and-tube equipment
CN109579600A (en) * 2018-12-27 2019-04-05 苏州海陆重工股份有限公司 The gas inlet structure of multitubular boiler
EP4134614A1 (en) * 2021-08-11 2023-02-15 Basell Polyolefine GmbH Transfer line exchanger with thermal spray coating

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2143477A (en) * 1937-06-24 1939-01-10 Robert E Dillon Liner for condenser tubes
US2225615A (en) * 1940-01-08 1940-12-24 Thomas J Bay Condenser tube protector
GB1196562A (en) * 1967-02-17 1970-07-01 Hitachi Ltd Welded Assembly of a Tube and a Tube Sheet
FR2571839B1 (en) * 1984-10-12 1987-01-02 Pecquet Tesson Soc Ind IMPROVEMENTS ON TUBULAR PLATES OF HEAT EXCHANGERS
EP0567674B1 (en) * 1992-04-29 1994-02-23 Deutsche Babcock-Borsig Aktiengesellschaft Heat exchange for cooling synthesis gas produced in a coal gasification plant
JPH06173034A (en) * 1992-12-09 1994-06-21 Hiroyuki Yoshiura Ceramic-coated metal and its production
US5647432A (en) * 1996-04-10 1997-07-15 Blasch Precision Ceramics, Inc. Ceramic ferrule and ceramic ferrule refractory wall for shielding tube sheet/boiler tube assembly of heat exchanger
US5863668A (en) * 1997-10-29 1999-01-26 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Controlled thermal expansion coat for thermal barrier coatings
AU4090600A (en) * 1999-06-30 2001-01-04 Rohm And Haas Company High performance heat exchangers
FR2795748B1 (en) * 1999-07-02 2002-03-01 Electricite De France IMPROVED SURFACE COATING COMPOSITION

Also Published As

Publication number Publication date
ATE356330T1 (en) 2007-03-15
DK1674815T3 (en) 2007-07-02
US7237601B2 (en) 2007-07-03
EP1674815A1 (en) 2006-06-28
US20060131005A1 (en) 2006-06-22
DE502004003178D1 (en) 2007-04-19
ES2281744T3 (en) 2007-10-01

Similar Documents

Publication Publication Date Title
DE2613588C2 (en) Use of a coating compound to form an external protective layer on conduits
EP2603451B1 (en) Burner and method for partially oxidizing liquid, carbon-containing fuel
EP0567674B1 (en) Heat exchange for cooling synthesis gas produced in a coal gasification plant
DE2621474A1 (en) EXHAUST SYSTEM
US10138151B2 (en) Submerged combustion burners and melters, and methods of use
EP1674815B1 (en) Heat exchanger for cooling a particle laden hot gas
AU2003232756B2 (en) Tube bundle apparatus for processing corrrosive fluids
DE2149634A1 (en) Process for the production of corrosion-resistant composite parts
JPS5977299A (en) Heat exchanger
EP0377089B1 (en) Heat exchanger, especially for cooling a cracking gas
DE69825835T2 (en) Protective lining for printing device, in particular for use in the urea synthesis process
DE102006022282A1 (en) Cold spray gun
EP2312252B1 (en) Waste heat boiler and method for cooling synthesis gas
DE3825472C2 (en)
EP3032209A1 (en) Quench cooling system
DE1426622A1 (en) Heating surface protection for boiler pipes
DE3816348C2 (en)
DE1646667C3 (en) Method for spraying a ceramic or oxide layer onto a base body
AT287030B (en) Device to prevent overheating of the inlet points of the tubes or the tube plates of tube heat exchangers
EP0851999B1 (en) Tubular heat exchanger for connection downstream of a thermal-cracking installation, process for coating a tubeplate and utilisation of a refractory mass
EP0960308A1 (en) Gas turbine installation with a ceramic-covered combustion chamber housing
DE19807070C1 (en) Combustion chamber for water boiler
DE19501422C2 (en) Cooled transition piece between a heat exchanger and a reactor
EP4122594B1 (en) Heat exchanger for cooling cracked gas
RU2730543C1 (en) Device for protection of heat exchangers against abrasive ash wear

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 502004003178

Country of ref document: DE

Date of ref document: 20070419

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070412

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070707

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070807

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2281744

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20071210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070608

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070607

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070307

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070908

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20101210

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20101224

Year of fee payment: 7

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120102

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20221125

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20221221

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20230224

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231220

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20231220

Year of fee payment: 20

Ref country code: NL

Payment date: 20231220

Year of fee payment: 20

Ref country code: IT

Payment date: 20231228

Year of fee payment: 20

Ref country code: FR

Payment date: 20231221

Year of fee payment: 20

Ref country code: AT

Payment date: 20231221

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20231220

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240124

Year of fee payment: 20