EP0567674B1 - Heat exchange for cooling synthesis gas produced in a coal gasification plant - Google Patents

Heat exchange for cooling synthesis gas produced in a coal gasification plant Download PDF

Info

Publication number
EP0567674B1
EP0567674B1 EP92107283A EP92107283A EP0567674B1 EP 0567674 B1 EP0567674 B1 EP 0567674B1 EP 92107283 A EP92107283 A EP 92107283A EP 92107283 A EP92107283 A EP 92107283A EP 0567674 B1 EP0567674 B1 EP 0567674B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tube
tube plate
synthesis gas
nozzles
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.)
Expired - Lifetime
Application number
EP92107283A
Other languages
German (de)
French (fr)
Other versions
EP0567674A1 (en
Inventor
Michael Fix
Konrad Nassauer
Rainer Dr. Gadow
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.)
Deutsche Babcock Borsig AG
Original Assignee
Deutsche Babcock Borsig AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche Babcock Borsig AG filed Critical Deutsche Babcock Borsig AG
Priority to DE92107283T priority Critical patent/DE59200074D1/en
Priority to EP92107283A priority patent/EP0567674B1/en
Priority to US07/931,822 priority patent/US5246063A/en
Priority to JP28810592A priority patent/JP3362170B2/en
Publication of EP0567674A1 publication Critical patent/EP0567674A1/en
Application granted granted Critical
Publication of EP0567674B1 publication Critical patent/EP0567674B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0075—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for syngas or cracked gas cooling systems

Definitions

  • the invention relates to a heat exchanger for cooling synthesis gas generated in a coal gasification plant with the features of the preamble of claim 1.
  • Synthesis gas which was created by gasifying coal, contains components that lead to erosion like ash particles or high-temperature corrosion to the pipe plate and the pipe inlet like sulfur compounds. It is known in waste heat exchangers for gases from ammonia synthesis (Chem.-Ing.-Tech. 56 (1984), pages 356 to 358) to protect the tube plate on the gas inlet side by a cover with a ceramic ramming mass and by the ramming mass into the pipe inlet Guide the inlet tube.
  • the invention has for its object to effectively protect the generic heat exchanger by measures which are matched to the synthesis gas to be cooled, coming from a coal gasification plant, on the gas inlet side against high-temperature corrosion and erosion.
  • the grommets used can be made from a ceramic material that is characterized by high resistance to temperature changes and high erosion resistance.
  • the grommets serve as a conically elongated pipe inlet and, when installed, form a closed assembly that covers the entire pipe plate including the pipe inlet of the heat exchanger pipes and thus protects them.
  • the special conical inlet shape of the grommets prevents the synthesis gas contained in them from sticking Solid particles that would lead to a blockage of the pipe inlet via bridging. Due to the conical inlet shape of the spout according to the invention, a constant increase in speed is achieved, as a result of which possible deposits are removed by the acceleration of the synthesis gas and the solid particles contained in the synthesis gas.
  • the two-layer coating on the tube plate, the pipe welding and in the pipe inlet gives these parts a high resistance to high-temperature corrosion and erosion. This protection takes effect when a spout is destroyed.
  • the heat exchanger has a bundle of heat exchanger tubes 1, two of which are shown.
  • the heat exchanger tubes 1 are each held in a tube plate 2, 3 at both ends.
  • the tube plates 2, 3 are fastened in a jacket 4 which encloses the heat exchanger tubes 1.
  • a gas inlet chamber 5 is connected to the upper tube plate 2 in the drawing and a gas outlet chamber 6 to the lower tube plate 3.
  • the gas inlet chamber 5 is connected via a pipe, not shown, to a reactor, also not shown, in which coal is gasified.
  • the synthesis gas generated by the gasification enters the gas inlet chamber 5, flows through the heat exchanger tubes 1 while releasing heat, and exits the gas outlet chamber 6 in a cooled state.
  • the jacket 4 of the heat exchanger is provided with an inlet nozzle 7 and an outlet nozzle 8.
  • water is fed into the interior of the jacket 4 as a coolant, which evaporates through the heat exchange with the hot synthesis gas flowing through the heat exchanger tubes 1 and is discharged as a water vapor mixture through the outlet connector 8.
  • the water vapor mixture is fed to the steam drum of a steam generation system, not shown.
  • the heat exchanger tubes 1 are designed as composite tubes and contain an austenitic inner tube 9 in order to counteract high-temperature corrosion of the heat exchanger tubes 1 by the hot synthesis gas.
  • the inner tube 9 is closely enclosed by an outer tube 10, which is fastened in the tube plate 2 via a tube weld 11.
  • the tube plate 2 on the gas inlet side is provided with a ceramic layer on the side facing the gas inlet chamber 5, which layer consists of individual ceramic nozzles 12.
  • the spout 12 has a cuboid outer contour 13 in the upper part, which tapers downwards and ends in a tube section 14.
  • Each grommet 12 has an opening 15 which starts from the rectangular outer contour 13, narrows conically and merges into the inner cross section of the pipe section 14.
  • the outside diameter of the pipe section 14 of the grommet 12 is somewhat smaller than the inside diameter of the heat exchanger pipe 1, so that the pipe section 14 can be inserted into the inlet of the heat exchanger pipe 1.
  • the pipe section 14 extends into the inlet of a heat exchanger pipe 1 so that the lower edge of the pipe section 14 engages over the inner pipe 9.
  • the grommets 12 are placed on the tube plate 2 so that the pipe section 14 of a grommet 12 is inserted into one of the heat exchanger tubes 1 and that the outer contour 13th abut adjacent spouts 12 at a distance above the tube plate 2. In this way, a closed bandage is formed, which covers and protects the entire tube plate 2 on the gas inlet side.
  • the spout 12 is provided with an edge recess 16 which extends over a quarter-circular arc.
  • a bolt 17 is guided through the edge recesses 16 of the abutting spouts 12 and is fastened on the tube plate 2.
  • the spouts 12 are fixed on the tube plate 2 by means of a nut 18 screwed onto the bolt 17.
  • the tube plate 2 and the tube weld 11 of the heat exchanger tubes 1 are provided with a two-layer coating 20.
  • the first layer which is applied to the metallic material of the tube plate 2, is an atmospheric plasma-sprayed metallic layer which serves as protection against oxidation and high-temperature corrosion of the base material and as an adhesion promoter for the second layer.
  • the second layer is an atmospheric plasma-sprayed ceramic layer, which is resistant to high temperatures and erosion.
  • the coating 20 is also applied in the tube inlets of the heat exchanger tubes 1 in order to counteract the increased risk of erosion and the introduction of heat, which is caused by eddy formation in the turbulent area of the tube inlet section, in particular at the end of the nozzle 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

Die Erfindung betrifft einen Wärmetauscher zum Kühlen von in einer Kohlevergasungsanlage erzeugtem Synthesegas mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a heat exchanger for cooling synthesis gas generated in a coal gasification plant with the features of the preamble of claim 1.

Synthesegas, das durch Vergasung von Kohle entstanden ist, enthält Bestandteile, die wie Aschepartikel zu einer Erosion oder wie Schwefelverbindungen zu einer Hochtemperaturkorrosion an der Rohrplatte und in dem Rohreinlauf führen. Es ist bei Abhitzewärmetauschern für Gase aus der Ammoniaksynthese bekannt (Chem.-Ing.-Tech. 56 (1984), Seiten 356 bis 358), die gaseintrittsseitige Rohrplatte durch eine Abdeckung mit einer keramischen Stampfmasse zu schützen und durch die Stampfmasse bis in den Rohreinlauf Einlaufröhrchen zu führen.Synthesis gas, which was created by gasifying coal, contains components that lead to erosion like ash particles or high-temperature corrosion to the pipe plate and the pipe inlet like sulfur compounds. It is known in waste heat exchangers for gases from ammonia synthesis (Chem.-Ing.-Tech. 56 (1984), pages 356 to 358) to protect the tube plate on the gas inlet side by a cover with a ceramic ramming mass and by the ramming mass into the pipe inlet Guide the inlet tube.

Der Erfindung liegt die Aufgabe zugrunde, den gattunsgemäßen Wärmetauscher durch Maßnahmen, die auf das zu kühlende, aus einer Kohlevergasungsanlage stammende Synthesegas abgestimmt sind, auf der Gaseintrittsseite wirksam gegen Hochtemperaturkorrosion und Erosion zu schützen.The invention has for its object to effectively protect the generic heat exchanger by measures which are matched to the synthesis gas to be cooled, coming from a coal gasification plant, on the gas inlet side against high-temperature corrosion and erosion.

Diese Aufgabe wird bei einem gattungsgemäßen Wärmetauscher erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.This 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 verwendeten Tüllen lassen sich aus einem keramischen Werkstoff fertigen, der sich durch eine hohe Temperaturwechselbeständigkeit und eine hohe Erosionsfestigkeit auszeichnet. Die Tüllen dienen als konisch verlängerter Rohreinlauf und bilden im eingebauten Zustand einen geschlossenen Verband, der die gesamte Rohrplatte einschließlich des Rohreinlaufes der Wärmetauscherrohre abdeckt und somit schützt. Die besondere konische Einlaufform der Tüllen vermeidet ein Anbacken der in dem Synthesegas enthaltenen Feststoffpartikel, das über eine Brückenbildung zu einem Verstopfen des Rohreinlaufes führen würde. Bedingt durch die konische Einlaufform der erfindungsgemäßen Tülle, wird ein stetiger Geschwindigkeitszuwachs erzielt, wodurch mögliche Ablagerungen durch die Beschleunigung des Synthesegases und der im Synthesegas enthaltenen Feststoffpartikel entfernt werden. Die zweilagige Beschichtung an der Rohrplatte, der Rohreinschweißung und im Rohreinlauf verleiht diesen Teilen eine hohe Beständigkeit gegenüber Hochtemperaturkorrosion und Erosion. Dieser Schutz wird wirksam, wenn eine Tülle zerstört wird.The grommets used can be made from a ceramic material that is characterized by high resistance to temperature changes and high erosion resistance. The grommets serve as a conically elongated pipe inlet and, when installed, form a closed assembly that covers the entire pipe plate including the pipe inlet of the heat exchanger pipes and thus protects them. The special conical inlet shape of the grommets prevents the synthesis gas contained in them from sticking Solid particles that would lead to a blockage of the pipe inlet via bridging. Due to the conical inlet shape of the spout according to the invention, a constant increase in speed is achieved, as a result of which possible deposits are removed by the acceleration of the synthesis gas and the solid particles contained in the synthesis gas. The two-layer coating on the tube plate, the pipe welding and in the pipe inlet gives these parts a high resistance to high-temperature corrosion and erosion. This protection takes effect when a spout is destroyed.

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

Fig. 1
den Längsschnitt durch einen Wärmetauscher,
Fig. 2
die Draufsicht auf einen Teil der gaseintrittsseitigen Rohrplatte,
Fig. 3
die Einzelheit Z nach Fig. 1 und
Fig. 4
eine einzelne Tülle in perspektivischer Darstellung.
An embodiment of the invention is shown in the drawing and is explained in more detail below. Show it:
Fig. 1
the longitudinal section through a heat exchanger,
Fig. 2
the top view of a part of the gas inlet-side tube plate,
Fig. 3
the detail Z of FIG. 1 and
Fig. 4
a single spout in perspective.

Der Wärmetauscher weist ein Bündel von Wärmetauscherrohren 1 auf, von denen zwei gezeigt sind. Die Wärmetauscherrohre 1 sind an beiden Enden jeweils in einer Rohrplatte 2, 3 gehalten. Die Rohrplatten 2, 3 sind in einem Mantel 4 befestigt, der die Wärmetauscherrohre 1 umschließt. Innerhalb des Mantels 4 schließt sich an die in der Zeichnung obere Rohrplatte 2 eine Gaseintrittskammer 5 und an die untere Rohrplatte 3 eine Gasaustrittskammer 6 an. Die Gaseintrittskammer 5 ist über eine nicht gezeigte Rohrleitung mit einem ebenfalls nicht gezeigten Reaktor verbunden, in dem Kohle vergast wird. Das durch die Vergasung erzeugte Synthesegas tritt in die Gaseintrittskammer 5 ein, durchströmt unter Wärmeabgabe die Wärmetauscherrohre 1 und tritt gekühlt aus der Gasaustrittskammer 6 aus.The heat exchanger has a bundle of heat exchanger tubes 1, two of which are shown. The heat exchanger tubes 1 are each held in a tube plate 2, 3 at both ends. The tube plates 2, 3 are fastened in a jacket 4 which encloses the heat exchanger tubes 1. Within the jacket 4, a gas inlet chamber 5 is connected to the upper tube plate 2 in the drawing and a gas outlet chamber 6 to the lower tube plate 3. The gas inlet chamber 5 is connected via a pipe, not shown, to a reactor, also not shown, in which coal is gasified. The synthesis gas generated by the gasification enters the gas inlet chamber 5, flows through the heat exchanger tubes 1 while releasing heat, and exits the gas outlet chamber 6 in a cooled state.

Der Mantel 4 des Wärmetauschers ist mit einem Eintrittsstutzen 7 und einem Austrittsstutzen 8 versehen. Durch den Eintrittsstutzen 7 wird in den Innenraum des Mantels 4 als Kühlmittel Wasser eingespeist, das durch den Wärmetausch mit dem heißen, die Wärmetauscherrohre 1 durchströmenden Synthesegas verdampft und als Wasserdampfgemisch durch den Austrittsstutzen 8 abgeführt wird. Das Wasserdampfgemisch wird der Dampftrommel eines nicht gezeigten Dampferzeugungssystems zugeführt.The jacket 4 of the heat exchanger is provided with an inlet nozzle 7 and an outlet nozzle 8. Through the inlet connector 7, water is fed into the interior of the jacket 4 as a coolant, which evaporates through the heat exchange with the hot synthesis gas flowing through the heat exchanger tubes 1 and is discharged as a water vapor mixture through the outlet connector 8. The water vapor mixture is fed to the steam drum of a steam generation system, not shown.

Die Wärmetauscherrohre 1 sind als Verbundrohre ausgebildet und enthalten ein austenitisches Innenrohr 9, um einer Hochtemperaturkorrosion der Wärmetauscherrohre 1 durch das heiße Synthesegas entgegenzuwirken. Das Innenrohr 9 ist von einem Außenrohr 10 eng umschlossen, das über eine Rohreinschweißung 11 in der Rohrplatte 2 befestigt ist.The heat exchanger tubes 1 are designed as composite tubes and contain an austenitic inner tube 9 in order to counteract high-temperature corrosion of the heat exchanger tubes 1 by the hot synthesis gas. The inner tube 9 is closely enclosed by an outer tube 10, which is fastened in the tube plate 2 via a tube weld 11.

Die gaseintrittsseitige Rohrplatte 2 ist zum Schutz gegen Hochtemperaturkorrosion und Erosion auf der der Gaseintrittskammer 5 zugewandten Seite mit einer keramischen Schicht versehen, die aus einzelnen keramischen Tüllen 12 besteht. Die Tülle 12 weist im oberen Teil eine quaderförmige Außenkontur 13 auf, die sich nach unten verjüngt und in einem Rohrabschnitt 14 endet. Jede Tülle 12 weist eine Öffnung 15 auf, die von der quaderförmigen Außenkontur 13 ausgeht, sich konisch verengt und in den Innenquerschnitt des Rohrabschnittes 14 übergeht. Der Außendurchmesser des Rohrabschnittes 14 der Tülle 12 ist etwas geringer als der Innendurchmesser des Wärmetauscherrohres 1, so daß der Rohrabschnitt 14 in den Einlauf des Wärmetauscherrohres 1 eingesetzt werden kann. Der Rohrabschnitt 14 ragt soweit in den Einlauf eines Wärmetauscherrohres 1 hinein, daß die Unterkante des Rohrabschnittes 14 das Innenrohr 9 übergreift.To protect against high-temperature corrosion and erosion, the tube plate 2 on the gas inlet side is provided with a ceramic layer on the side facing the gas inlet chamber 5, which layer consists of individual ceramic nozzles 12. The spout 12 has a cuboid outer contour 13 in the upper part, which tapers downwards and ends in a tube section 14. Each grommet 12 has an opening 15 which starts from the rectangular outer contour 13, narrows conically and merges into the inner cross section of the pipe section 14. The outside diameter of the pipe section 14 of the grommet 12 is somewhat smaller than the inside diameter of the heat exchanger pipe 1, so that the pipe section 14 can be inserted into the inlet of the heat exchanger pipe 1. The pipe section 14 extends into the inlet of a heat exchanger pipe 1 so that the lower edge of the pipe section 14 engages over the inner pipe 9.

Die Tüllen 12 sind so auf die Rohrplatte 2 gelegt, daß jeweils der Rohrabschnitt 14 einer Tülle 12 in eines der Wärmetauscherrohre 1 eingesetzt ist und daß die Außenkontur 13 benachbarter Tüllen 12 in einem Abstand oberhalb der Rohrplatte 2 aneinanderstoßen. Auf diese Weise wird ein geschlossener Verband gebildet, der auf der Gaseintrittsseite die gesamte Rohrplatte 2 bedeckt und schützt.The grommets 12 are placed on the tube plate 2 so that the pipe section 14 of a grommet 12 is inserted into one of the heat exchanger tubes 1 and that the outer contour 13th abut adjacent spouts 12 at a distance above the tube plate 2. In this way, a closed bandage is formed, which covers and protects the entire tube plate 2 on the gas inlet side.

An jeder Ecke der quaderförmigen Außenkontur 13 ist die Tülle 12 mit einer sich über einen Viertelkreisbogen erstreckenden Randausnehmung 16 versehen. Durch die Randausnehmungen 16 der aneinanderstoßenden Tüllen 12 ist ein Bolzen 17 geführt, der auf der Rohrplatte 2 befestigt ist. Über eine auf den Bolzen 17 geschraubte Mutter 18 werden die Tüllen 12 auf der Rohrplatte 2 fixiert.At each corner of the rectangular outer contour 13, the spout 12 is provided with an edge recess 16 which extends over a quarter-circular arc. A bolt 17 is guided through the edge recesses 16 of the abutting spouts 12 and is fastened on the tube plate 2. The spouts 12 are fixed on the tube plate 2 by means of a nut 18 screwed onto the bolt 17.

Die Rohrplatte 2 und die Rohreinschweißung 11 der Wärmetauscherrohre 1 sind mit einer zweilagigen Beschichtung 20 versehen. Die erste Lage, die auf den metallischen Werkstoff der Rohrplatte 2 aufgebracht wird, ist eine atmosphärisch plasmagespritzte metallische Auflageschicht, die als Oxidations- und Hochtemperaturkorrosionsschutz des Grundwerkstoffes sowie als Haftvermittler für die zweite Lage dient. Die zweite Lage ist eine atmosphärisch plasmagespritzte Keramikschicht, welche hochtemperatur- und erosionsbeständig ist. Die Beschichtung 20 wird ebenfalls in den Rohreinläufen der Wärmetauscherrohre 1 aufgebracht, um der erhöhten Erosionsgefahr und der Wärmeeinbringung entgegenzuwirken, die durch eine Wirbelbildung in dem turbulenten Bereich der Rohreinlaufstrecke, insbesondere am Ende der Tülle 12, hervorgerufen wird.The tube plate 2 and the tube weld 11 of the heat exchanger tubes 1 are provided with a two-layer coating 20. The first layer, which is applied to the metallic material of the tube plate 2, is an atmospheric plasma-sprayed metallic layer which serves as protection against oxidation and high-temperature corrosion of the base material and as an adhesion promoter for the second layer. The second layer is an atmospheric plasma-sprayed ceramic layer, which is resistant to high temperatures and erosion. The coating 20 is also applied in the tube inlets of the heat exchanger tubes 1 in order to counteract the increased risk of erosion and the introduction of heat, which is caused by eddy formation in the turbulent area of the tube inlet section, in particular at the end of the nozzle 12.

Claims (5)

  1. Heat exchanger, for the cooling of synthesis gas produced in a coal gasification plant, consisting of heat exchanger tubes (1), which are flowed through by the synthesis gas to be cooled, are retained in two tube plates (2, 3) and which are surrounded by a jacket (4), wherein the tube plate (2) at the gas entry side is covered by a ceramic layer, characterised thereby, that the layer consists of individual nozzles (12), which are arranged one beside the other and display parallelepipedonal mutually abutting outer edges in the upper part and an opening (15) in the lower part, which opening starts out from the parallelepipedonal external outline (13) and narrows conically into a tubular portion (14), which projects into the heat exchanger tubes (1), that edge recesses (16) are formed in the corners of the parallelepipedonal external outline (13) of the nozzles (12) and that a bolt (17), which is fastened at the tube plate (2), is led through the edge recesses (16) of mutually abutting nozzles (12).
  2. Heat exchanger according to claim 1, characterised thereby, that the mutually abutting edges of the nozzle (12) are arranged at a spacing from the tube plate (2) and that the free space between the underside of the nozzle (12) and the tube plate (2) is filled out by ceramic mats (19).
  3. Heat exchanger according to claim 1 or 2, characterised thereby, that the tube plate (2) and the tube inlet of the heat exchanger tubes (1) is coated on the side facing the nozzles (12) with a two-layer metallic and ceramic coating (20).
  4. Heat exchanger according to claim 3, characterised thereby, that the two-layer coating (20) in the tube inlet reaches beyond the end of the tubular portion (14) of the nozzle (12) inserted into the heat exchanger tube (1).
  5. Heat exchanger according to one of the claims 1 to 4, characterised thereby, that the heat exchanger tubes (1) are constructed as compound tubes and each consist of an inner tube (9), which is resistant to high-temperature corrosion and closely surrounded by an outer tube (10).
EP92107283A 1992-04-29 1992-04-29 Heat exchange for cooling synthesis gas produced in a coal gasification plant Expired - Lifetime EP0567674B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE92107283T DE59200074D1 (en) 1992-04-29 1992-04-29 Heat exchanger for cooling synthesis gas generated in a coal gasification plant.
EP92107283A EP0567674B1 (en) 1992-04-29 1992-04-29 Heat exchange for cooling synthesis gas produced in a coal gasification plant
US07/931,822 US5246063A (en) 1992-04-29 1992-08-18 Heat exchanger for cooling synthesis gas generated in a cool-gasification plant
JP28810592A JP3362170B2 (en) 1992-04-29 1992-09-15 Heat exchanger for cooling syngas generated in coal gasifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92107283A EP0567674B1 (en) 1992-04-29 1992-04-29 Heat exchange for cooling synthesis gas produced in a coal gasification plant

Publications (2)

Publication Number Publication Date
EP0567674A1 EP0567674A1 (en) 1993-11-03
EP0567674B1 true EP0567674B1 (en) 1994-02-23

Family

ID=8209584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107283A Expired - Lifetime EP0567674B1 (en) 1992-04-29 1992-04-29 Heat exchange for cooling synthesis gas produced in a coal gasification plant

Country Status (4)

Country Link
US (1) US5246063A (en)
EP (1) EP0567674B1 (en)
JP (1) JP3362170B2 (en)
DE (1) DE59200074D1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9416203U1 (en) * 1994-10-07 1994-12-01 Grandi Angelo Cucine Spa Heat shield for heat exchangers
DE19501422C2 (en) * 1995-01-19 2002-03-28 Borsig Gmbh Cooled transition piece between a heat exchanger and a reactor
DE19534823C2 (en) * 1995-09-20 2002-08-22 Ruhr Oel Gmbh Shell and tube heat exchangers
US5775412A (en) * 1996-01-11 1998-07-07 Gidding Engineering, Inc. High pressure dense heat transfer area heat exchanger
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
AU4090600A (en) * 1999-06-30 2001-01-04 Rohm And Haas Company High performance heat exchangers
DE10015343C2 (en) 2000-03-28 2002-05-23 Borsig Gmbh Heat recovery boiler with heating surface tubes welded in a tube plate
US6284324B1 (en) 2000-04-21 2001-09-04 Eastman Chemical Company Coal gasification burner shield coating
DE10028568C1 (en) * 2000-06-09 2001-06-07 Uwe Schwerdtfeger Tubular heat exchanger used for treating hot sulfur-containing gases comprises a wall made of composite material having a steel plate and a sealed refractory concrete stamping composition and a tube made of a heat resistant material
DE502004003178D1 (en) * 2004-12-21 2007-04-19 Borsig Gmbh Heat exchanger for cooling a hot gas containing solid particles
DE102005032118A1 (en) * 2005-07-07 2007-01-11 Ruhr Oel Gmbh Tube bundle heat exchanger with wear-resistant tube bottom lining
US7357126B2 (en) * 2005-12-20 2008-04-15 Caterpillar Inc. Corrosive resistant heat exchanger
US8828107B2 (en) 2006-01-31 2014-09-09 Linde Process Plants, Inc. Process and apparatus for synthesis gas heat exchange system
US7574981B1 (en) * 2006-10-05 2009-08-18 Citgo Petroleum Corporation Apparatus and method for improving the durability of a cooling tube in a fire tube boiler
US20080118310A1 (en) * 2006-11-20 2008-05-22 Graham Robert G All-ceramic heat exchangers, systems in which they are used and processes for the use of such systems
GB0705439D0 (en) * 2007-03-22 2007-05-02 Alstom Intellectual Property Improved flue gas cooling and cleaning arrangment
GB2530897B (en) * 2013-06-20 2016-11-02 Boustead Int Heaters Ltd Improvements in waste heat recovery units
EP2881691A1 (en) * 2013-12-09 2015-06-10 Balcke-Dürr GmbH Heat exchanger with tube sheet and inserted sleeve
ES2767089T3 (en) * 2017-01-31 2020-06-16 Alfa Laval Corp Ab Apparatus and method for protecting the tube sheet of a synthesis gas loop boiler
CN106969659B (en) * 2017-04-14 2018-10-30 林州市桃园散热科技有限公司 A kind of radiator circulating water strainer and its manufactured radiator
EP3499171A1 (en) * 2017-12-15 2019-06-19 ALFA LAVAL OLMI S.p.A. Anti-erosion device for a shell-and-tube equipment

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150714A (en) * 1955-09-01 1964-09-29 Ind Co Kleinewefers Konst Cast heat exchanger tube assembly
FR1222655A (en) * 1959-01-19 1960-06-13 Pechiney Prod Chimiques Sa Improvements to heat exchangers
DE1185420B (en) * 1959-10-06 1965-01-14 Sulzer Ag Lining to protect objects that are flowed through by high pressure media subject to abrupt temperature changes and which are sensitive to such temperature changes
US3185210A (en) * 1962-05-23 1965-05-25 American Schack Company Inc High temperature recuperator
DE1451225A1 (en) * 1964-12-19 1969-05-14 Linde Ag Tube, especially for tube heat exchangers
GB1259111A (en) * 1968-03-15 1972-01-05
DE1601947B2 (en) * 1968-03-16 1971-09-30 Siegener AG Geisweid, 5930 Hüttental-Geisweid HEAT EXCHANGER FOR HEATING GASES CONTAINING DUST-CONTAINING AND / OR AGGRESSIVE COMPONENTS
US3712798A (en) * 1970-01-06 1973-01-23 Surface Technology Corp Chromium boride coated articles
US3707186A (en) * 1971-01-18 1972-12-26 Foster Wheeler Corp Cooling tube ferrule
GB1429336A (en) * 1973-05-15 1976-03-24 Shell Int Research Heat exchanger and process for cooling hot gases
SU817396A1 (en) * 1979-04-27 1981-03-30 Предприятие П/Я В-2636 Heat exchange pipe protective apparatus
US4254819A (en) * 1979-10-12 1981-03-10 Atlantic Richfield Company Protecting entry portions of tubes of emergency cooling system
US4294312A (en) * 1979-11-09 1981-10-13 Borsig Gmbh Tube-bundle heat exchanger for cooling a medium having a high inlet temperature
US4585057A (en) * 1982-09-30 1986-04-29 Krw Energy Systems Inc. Cooled tubesheet inlet for abrasive fluid heat exchanger
FR2571839B1 (en) * 1984-10-12 1987-01-02 Pecquet Tesson Soc Ind IMPROVEMENTS ON TUBULAR PLATES OF HEAT EXCHANGERS
DE3541887A1 (en) * 1985-11-27 1987-06-04 Krupp Koppers Gmbh HEAT EXCHANGER FOR COOLING SOLIDS CONTAINING GASES
FR2610099B1 (en) * 1987-01-28 1990-09-07 Lelant Jean Claude TUBULAR PLATE OF HEAT GENERATOR EXCHANGER

Also Published As

Publication number Publication date
JPH05306893A (en) 1993-11-19
US5246063A (en) 1993-09-21
DE59200074D1 (en) 1994-03-31
EP0567674A1 (en) 1993-11-03
JP3362170B2 (en) 2003-01-07

Similar Documents

Publication Publication Date Title
EP0567674B1 (en) Heat exchange for cooling synthesis gas produced in a coal gasification plant
EP0235277B1 (en) Device for burning oxidizable components in a carrier gas to be cleaned
EP0219605B2 (en) Tube bundle exchanger
EP0284762B1 (en) Apparatus for cooling synthesis gas in a quench cooler
DE2008311C3 (en) Heat exchanger
EP0459023B1 (en) Apparatus for gasifying carbon containing materials
DD297697A5 (en) ROHRBUENDEL-HEAT EXCHANGER
DE3137576C2 (en) Device for cooling process gas originating from a gasification process
EP3032209B1 (en) Quench cooling system
DE2504060A1 (en) SLAG BATH GENERATOR WORKING UNDER PRESSURE
DE3043853C2 (en) Hot gas cooler with a pressure vessel
CH670501A5 (en)
DE3408627A1 (en) DEVICE FOR DEDUSTING HOT GASES
EP0242504A2 (en) Apparatus for the gasification of finely divided, particularly solid fuels under a high pressure
DE2054578A1 (en) Jacket and pipe heat exchanger for steam generation
DE3208421C2 (en)
DE3119905C2 (en)
DD208818A5 (en) SCHLACKENABSTICHGASERZEUGER
DE3538515C2 (en)
DE2913748C2 (en) Tube bundle heat exchanger for cooling slag-containing hot gases from coal gasification
EP1923652B1 (en) Tube bundle heat exchanger with a pipe support with integrated cleaning device
EP1674815B1 (en) Heat exchanger for cooling a particle laden hot gas
DE19926402C1 (en) Generating steam from gases produced by non-catalytic cracking of hydrocarbons comprises passing them through one tube of double-walled heat exchanger in water-filled container, with different fluid being passed through other tube
CH662405A5 (en) Fluid bed firing.
DE3908277C2 (en) Protection against erosion for heat exchangers

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: 19930122

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

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

Effective date: 19940218

REF Corresponds to:

Ref document number: 59200074

Country of ref document: DE

Date of ref document: 19940331

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20030415

Year of fee payment: 12

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

Ref country code: FR

Payment date: 20030418

Year of fee payment: 12

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

Ref country code: GB

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

Effective date: 20040429

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040429

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

Ref country code: FR

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

Effective date: 20041231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

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

Effective date: 20050429

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

Ref country code: DE

Payment date: 20110610

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59200074

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59200074

Country of ref document: DE

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120501