EP0048326A2 - Hot-gas cooler for a coal gasification plant - Google Patents

Hot-gas cooler for a coal gasification plant Download PDF

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Publication number
EP0048326A2
EP0048326A2 EP81105939A EP81105939A EP0048326A2 EP 0048326 A2 EP0048326 A2 EP 0048326A2 EP 81105939 A EP81105939 A EP 81105939A EP 81105939 A EP81105939 A EP 81105939A EP 0048326 A2 EP0048326 A2 EP 0048326A2
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EP
European Patent Office
Prior art keywords
insert
pressure vessel
shirt
tubes
annular space
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EP81105939A
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German (de)
French (fr)
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EP0048326A3 (en
EP0048326B1 (en
EP0048326B2 (en
Inventor
Jaroslav Zabelka
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ABB Management AG
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Sulzer AG
Gebrueder Sulzer AG
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/86—Other features combined with waste-heat boilers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/485—Entrained flow gasifiers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/78—High-pressure apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1838—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations
    • F22B1/1846—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations the hot gas being loaded with particles, e.g. waste heat boilers after a coal gasification plant
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
    • C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water

Definitions

  • a hot gas cooler according to the preamble of claim 1 has been proposed, in which the hot gases of the reaction chamber of a coal gasification plant are to be cooled to a temperature of around 400 ° C.
  • the high temperature range on the gas side requires a correspondingly large heat transfer surface, that is, a correspondingly large insert.
  • a particular advantage of the invention is that, given the length of the insert, its diameter does not have to be increased too much in order to achieve the necessary heat transfer area. Excessive enlargement of this diameter would in fact result in the gas column being cooled being too slow, which could result in a one-sided flow profile. This would in turn make poor use of the heat transfer surface, with the result that either the required cooling would not be achieved or the insert and pressure vessel would have to be enlarged further.
  • Insert and shirt can be designed as coaxial circular cylinder surfaces.
  • the welded pipes can be arranged as surface lines or as spirals in the cylinder surfaces.
  • a solution according to the features of claim 2 is particularly advantageous.
  • the insert and shirt then consist of tube sheets which can be easily manufactured, transported and welded together in the workshop.
  • the solution according to claim 4 has the advantage that the annular space between the insert and the shirt has extensions evenly distributed over its circumference, which make it easier to drive onto this annular space for maintenance and repair purposes.
  • Insert 3 and shirt 5 each consist of a series of vertical tubes 6 which are welded tightly to one another via webs and which form surface lines of regular six-sided prisms.
  • the tubes 6 of the insert 3 and the shirt 5 are bent inwards in an upper region, a part of the tubes 6 of the insert 3, again welded tightly together, forming a neck 7 with a hexagonal cross section.
  • the tubes 6 of the insert 3 as well as the shirt 5 are connected at their lower end to a common distributor 14, which also has a hexagonal outline.
  • the tubes of the insert 3 are alternately bent out in the end region in such a way that an open tuft of tubes is formed, through which the gas to be cooled can pass from the central drop chamber 10 into the annular space 11.
  • the neck 25 of this funnel penetrates the bottom 26 of the pressure vessel 1.
  • the space between the two Walls of this funnel 23 are filled with water, which exits through holes 30 and forms a level 32 in the funnel.
  • the neck 7 is connected over a non-signed resilient member with an inwardly projecting edge 30 of a pipe 31, which is lined with I soliersteinen 32 and represents the exit of a not shown Reqtechnischsgefässes. Fasten the pressure vessel 1; 31 is surrounded by a support 34 with a flange 35. This flange 35 is connected to the reaction vessel mentioned in a pressure-tight manner.
  • An opening 40 is provided on the shirt 5, in the area of which part of the tubes is bent out of the plane of the shirt surface and there are no sealing connecting ribs between the tubes.
  • the edge of the opening 40 is connected by a bellows 42 to an outlet line 43, which leaves the pressure vessel 1 through a flexible sleeve 44.
  • distributors 14 and collectors 12 are connected to the other parts of the steam generator system via pipes (not shown) which penetrate the pressure vessel 1.
  • gases from about 1,400 ° C. which contain soot and slag particles, flow from the aforementioned reactor, not shown, through the lined tube 31 and the neck 7 into the insert 3, in which gas radiation, in particular, reaches the cooled wall of the Use, cooling to around 1,000 ° C takes place.
  • the gas flow bends upwards, while the vast majority of the soot and slag particles fall into the funnel 23 and are discharged from it with the continuously flowing water.
  • the gases flowing upwards in the annular space 11 between the insert 3 and the shirt 5 are further cooled to about 400 ° C., whereupon they leave the annular space via the pipe 43.
  • Insert 3 and shirt 5 are suspended in the exemplary embodiment via drawstrings 16 and 17, which expediently start from the web plates between the tubes 6.
  • the drawstrings 16 can be connected gas-tight in the region of the upper outer edge of the insert 3 up to the approximately horizontal, tightly connected tubes 6 of the shirt 5, so that the rooms 10 and 11 are completely separated from the room outside the shirt 5 .
  • These extensions 52, 53 can be reached via manholes (not shown) in pressure vessel 2 and shirt 5 and / or via the existing pressure vessel connections 34, 35 and 43.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Der Heissgaskühler besteht aus einem vertikalen, zylindrischen Druckgefäss (1) mit einem koaxial zu diesem angeordneten, über seinen Umfang geschlossenen Einsatz aus dicht zusammengeschweissten Rohren (6). Die Rohre (6) sind Teil des beheizten Drucksystems eines Dampferzeugers. Der vom Einsatz umschlossene Raum (10) ist oben über einen das Druckgefäss (1) durchdringenden Gaszufuhrkanal mit einer Reaktionskammer und unten über einen Austrittskanal (25) mit einer Schlackenabführvorrichtung verbunden. Der Einsatz ist von einem ebenfalls aus dicht verschweissten Rohren (6) bestehenden Hemd (5) umgeben, so dass ein den Einsatz umgebender, gegenüber dem Druckgefässmantel abgeschlossener Ringraum (11) gebildet ist. Der Ringraum (11) kommuniziert in seinem unteren Bereich mit dem Raum (10) des Einsatzes. Im oberen Teil des Ringraumes (11) ist ein kühlbarer, am Hemd (5) angeschlossener Gasaustrittskanal (43) vorgesehen, der das Druckgefäss (1) durchdringt. Hierdurch werden die Abmessungen des Einsatzes und damit auch die Abmessungen des Druckgefässes verkleinert und zugleich bleibt eine ausreichende Zugänglichkeit bei Wartungsarbeiten erhalten.The hot gas cooler consists of a vertical, cylindrical pressure vessel (1) with an insert made of tubes (6) welded together tightly around its circumference and closed over its circumference. The tubes (6) are part of the heated pressure system of a steam generator. The space (10) enclosed by the insert is connected at the top to a reaction chamber via a gas supply channel penetrating the pressure vessel (1) and at the bottom via a discharge channel (25) to a slag removal device. The insert is surrounded by a shirt (5), which is also made of tightly welded pipes (6), so that an annular space (11) surrounding the insert and sealed off from the pressure vessel jacket is formed. The annular space (11) communicates in its lower area with the space (10) of the insert. In the upper part of the annular space (11) there is a coolable gas outlet channel (43) which is connected to the shirt (5) and penetrates the pressure vessel (1). As a result, the dimensions of the insert and thus also the dimensions of the pressure vessel are reduced and, at the same time, adequate accessibility is maintained during maintenance work.

Description

Es ist ein Heissgaskühler nach dem Oberbegriff des Anspruchs 1 vorgeschlagen worden, in dem die heissen Gase der Reaktionskammer einer Kohlevergasungsanlage auf eine Temperatur von rund 400°C abgekühlt werden sollen. Die gasseitig hohe Temperaturspanne verlangt eine entsprechend grosse Wärmeübergangsfläche, das heisst einen entsprechend gross dimensionierten Einsatz.A hot gas cooler according to the preamble of claim 1 has been proposed, in which the hot gases of the reaction chamber of a coal gasification plant are to be cooled to a temperature of around 400 ° C. The high temperature range on the gas side requires a correspondingly large heat transfer surface, that is, a correspondingly large insert.

Es ist Aufgabe der Erfindung, die Abmessungen dieses Einsatzes und damit auch die Abmessungen des Druckgefässes klein zu halten, ohne dass dadurch seine Zugänglichkeit für die Wartung verunmöglicht würde.It is an object of the invention to keep the dimensions of this insert and thus also the dimensions of the pressure vessel small, without this making its accessibility for maintenance impossible.

Diese Aufgabe wird durch die Merkmale nach dem Kennzeichen des Anspruchs 1 gelöst. Durch das Anordnen eines Hemdes aus dicht verschweissten Rohren wird ein zweiter, ringförmiger Gaszug gebildet, der innen durch die Wand des Einsatzes begrenzt ist. Im Gegensatz zum Ausgangspunkt der Erfindung wird bei dieser auch die Aussenseite des Einsatzes zur Wärmeübertragung verwendet; die Abmessungen des im Druckgefäss unterzubringenden Drucksystems können daher verkleinert werden. 4 This object is achieved by the features according to the characterizing part of claim 1. By placing a shirt made of tightly welded pipes, a second, ring-shaped throttle cable is formed, which is delimited on the inside by the wall of the insert. In contrast to the starting point of the invention, the outside of the insert is also used for heat transfer; the dimensions of the pressure system to be accommodated in the pressure vessel can therefore be made smaller. 4th

Ein besonderer Vorteil der Erfindung besteht darin, dass bei gegebener Länge des Einsatzes dessen Durchmesser nicht zu stark vergrössert werden muss,um die nötige Wärmeübertragerfläche zu erreichen. Eine zu starke Vergrösserung dieses Durchmessers hätte nämlich eine zu geringe Geschwindigkeit der abzukühlenden Gassäule zur Folge, was sich in einem einseitigen Strömungsprofil auswirken könnte. Durch ein solches würde wiederum die Wärmeübertragerfläche schlecht ausgenutzt, mit der Folge, dass entweder die verlangte Abkühlung nicht erreicht würde oder aber Einsatz und Druckbehälter zusätzlich vergrössert werden müssten.A particular advantage of the invention is that, given the length of the insert, its diameter does not have to be increased too much in order to achieve the necessary heat transfer area. Excessive enlargement of this diameter would in fact result in the gas column being cooled being too slow, which could result in a one-sided flow profile. This would in turn make poor use of the heat transfer surface, with the result that either the required cooling would not be achieved or the insert and pressure vessel would have to be enlarged further.

Einsatz und Hemd können als koaxiale Kreisszylinderflächen ausgebildet werden. Die zusammengeschweissten Rohre lassen sich dabei als Mantellinien oder aber als Wendeln in den Zylinderflächen anordnen. Besonders vorteilhaft ist aber eine Lösung nach den Merkmalen des Anspruchs 2. Einsatz und Hemd bestehen dann aus Rohrtafeln, die leicht in der Werkstatt hergestellt, transportiert und an Ort zusammengeschweisst werden können.Insert and shirt can be designed as coaxial circular cylinder surfaces. The welded pipes can be arranged as surface lines or as spirals in the cylinder surfaces. However, a solution according to the features of claim 2 is particularly advantageous. The insert and shirt then consist of tube sheets which can be easily manufactured, transported and welded together in the workshop.

Die Lösung nach Anspruch 4 bringt den Vorteil, dass der Ringraum zwischen Einsatz und Hemd auf seinem Umfang gleichmässig verteilt Erweiterungen aufweist, die ein Befahren dieses Ringraumes für Wartungs-und Reparaturzwecke erleichtern. Die Erfindung wird nun an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert.The solution according to claim 4 has the advantage that the annular space between the insert and the shirt has extensions evenly distributed over its circumference, which make it easier to drive onto this annular space for maintenance and repair purposes. The invention will now be explained in more detail using an exemplary embodiment with reference to the drawing.

Es zeigen in schematischer Darstellung:

  • Figur 1: einen Vertikalschnitt durch einen Gaskühler nach der Erfindung
  • Figur 2: einen Querschnitt durch den Gaskühler nach der Schnittlinie II - II in Figur 1.
In a schematic representation:
  • Figure 1: a vertical section through a gas cooler according to the invention
  • FIG. 2: a cross section through the gas cooler along the section line II - II in FIG. 1.

In einem zylindrischen Druckbehälter 1 ist an einem inneren Balkenkranz 2 ein Einsatz 3 und an einem äusseren Balkenkranz 4 ein Hemd 5 aufgehängt. Einsatz 3 und Hemd 5 bestehen je aus einer Reihe von vertikalen, über Stege miteinander dicht verschweissten Rohren 6,welche Mantellinien von regulären sechsseitigen Prismen bilden. Die Rohre 6 des Einsatzes 3 wie des Hemdes 5 sind in einem oberen Bereich nach innen abgekröpft, wobei ein Teil der Rohre 6 des Einsatzes 3, wiederum dicht miteinander verschweisst, einen Hals 7 mit Sechseckquerschnitt bildet. Dasselbe gilt für einen Teil der Rohre 6 des Hemdes 5, die einen Hals 9 bilden.In a cylindrical pressure vessel 1 there is an insert 3 on an inner beam ring 2 and on an outer one Beam wreath 4 a shirt 5 hung. Insert 3 and shirt 5 each consist of a series of vertical tubes 6 which are welded tightly to one another via webs and which form surface lines of regular six-sided prisms. The tubes 6 of the insert 3 and the shirt 5 are bent inwards in an upper region, a part of the tubes 6 of the insert 3, again welded tightly together, forming a neck 7 with a hexagonal cross section. The same applies to part of the tubes 6 of the shirt 5, which form a neck 9.

Die restlichen, mit 6' bezeichneten Rohre verlaufen im Ringraum 11' zwischen den beiden Hälsen 7 und 9 und schliesslich sind die Enden aller Rohre 6 in einem sechseckig angelegten Ringkollektor 12 eingeschweisst.The remaining tubes, designated 6 ', run in the annular space 11' between the two necks 7 and 9, and finally the ends of all tubes 6 are welded into a hexagonal ring collector 12.

Die Rohre 6 des Einsatzes 3 wie auch des Hemdes 5 sind an ihrem unteren Ende mit einem gemeinsamen Verteiler 14 verbunden, der ebenfalls Sechseckumriss aufweist. Dabei sind im Endbereich die Rohre des Einsatzes 3 abwechslungsweise so ausgebogen, dass ein offenes Rohrbüschel entsteht, durch welches das zu kühlende Gas aus dem zentralen Fallraum 10 in den Ringraum 11 übertreten kann.The tubes 6 of the insert 3 as well as the shirt 5 are connected at their lower end to a common distributor 14, which also has a hexagonal outline. The tubes of the insert 3 are alternately bent out in the end region in such a way that an open tuft of tubes is formed, through which the gas to be cooled can pass from the central drop chamber 10 into the annular space 11.

Die Rohre des Hemdes 5 bilden zusammen mit den Stegen eine bis zum Verteiler 14 reichende dichte Wand. Etwa die Hälfte der Rohre ist jedoch im untersten Bereich aus dieser Wand ausgebogen. Sie münden wie üblich gegenüber den wandbildenden Rohren versetzt in den Verteiler 14, um diesen nicht unzulässig zu schwächen. Am Verteiler 14 ist unten ein Ring 20 angebracht, an dem ein Balg 21 befestigt ist, der eine dichte Verbindung herstellt zu einem Flansch 22 eines doppelwandigen Trichters 23. Der Hals 25 dieses Trichters durchdringt den Boden 26 des Druckgefässes 1. Der Zwischenraum zwischen den zwei Wänden dieses Trichters 23 ist mit Wasser gefüllt, das durch Löcher 30 austritt und im Trichter ein Niveau 32 bildet.The tubes of the shirt 5, together with the webs, form a dense wall extending to the distributor 14. However, about half of the pipes are bent out of this wall in the lowest area. They open, as usual, offset in relation to the wall-forming tubes in the distributor 14, in order not to weaken it inadmissibly. At the bottom of the distributor 14 there is a ring 20 to which a bellows 21 is attached, which creates a tight connection to a flange 22 of a double-walled funnel 23. The neck 25 of this funnel penetrates the bottom 26 of the pressure vessel 1. The space between the two Walls of this funnel 23 are filled with water, which exits through holes 30 and forms a level 32 in the funnel.

An seinem oberen Ende ist der Hals 7 über ein nicht gezeichnetes nachgiebiges Element mit einem nach innen vorspringenden Rand 30 eines Rohres 31 verbunden, das mit Isoliersteinen 32 ausgekleidet ist und den Austritt eines nicht gezeichneten Reqktionsgefässes darstellt. Das Rohr Druckgefäss 1 befestigten; 31 ist von einem Stützen 34 mit Flansch 35 umgeben. Dieser Flansch 35 wird mit dem genannten Reaktionsgefäss druckdicht verbunden.At its upper end, the neck 7 is connected over a non-signed resilient member with an inwardly projecting edge 30 of a pipe 31, which is lined with I soliersteinen 32 and represents the exit of a not shown Reqktionsgefässes. Fasten the pressure vessel 1; 31 is surrounded by a support 34 with a flange 35. This flange 35 is connected to the reaction vessel mentioned in a pressure-tight manner.

Am Hemd 5 ist eine Oeffnung 40 vorgesehen, in deren Bereich ein Teil der Rohre aus der Hemdflächenebene ausgebogen ist und dichtende Verbindungsrippen zwischen den Rohren fehlen. An der Aussenseite des Hemdes ist der Rand der Oeffnung 40 durch einen Balg 42 mit einer Austrittsleitung 43 verbunden, die den Druckbehälter 1 durch eine nachgiebige Hülse 44 verlässt.An opening 40 is provided on the shirt 5, in the area of which part of the tubes is bent out of the plane of the shirt surface and there are no sealing connecting ribs between the tubes. On the outside of the shirt, the edge of the opening 40 is connected by a bellows 42 to an outlet line 43, which leaves the pressure vessel 1 through a flexible sleeve 44.

Die zwischen dem Verteiler 14 und dem Sammler 12 parallel geschalteten Rohre 6 bilden mit Verteiler 14 und Sammler 12 zusammen den wärmeaufnehmenden Teil eines Dampferzeugers. Verteiler 14 und Sammler 12 sind zu diesem Zweck über nicht gezeichnete, den Druckbehälter 1 durchdringende Rohre mit den übrigen Anlageteilen des Dampferzeugers verbunden.The pipes 6 connected in parallel between the distributor 14 and the collector 12 together with the distributor 14 and collector 12 form the heat-absorbing part of a steam generator. For this purpose, distributors 14 and collectors 12 are connected to the other parts of the steam generator system via pipes (not shown) which penetrate the pressure vessel 1.

Im Betrieb der Anlage strömen aus dem erwähnten, nicht gezeichneten Reaktor Gase von etwa 1 400°C, die Russ und Schlacketeilchen enthalten, durch das gefütterte Rohr 31 und den Hals 7 in den Einsatz 3, in welchem vorallem durch Gasstrahlung an die gekühlte Wand des Einsatzes, eine Abkühlung auf rund 1 000°C stattfindet. Im Bereich des unteren Endes des Einsatzes biegt die Gasströmung nach oben um, während.der weitaus grösste Teil der Russ- und Schlacketeilchen in den Trichter 23 fällt und aus diesem mit dem laufend einströmenden Wasser abgeführt wird. Die im Ringraum 11 wischen Einsatz 3 und Hemd 5 nach oben strömenden Gase werden weiter abgekühlt auf etwa 400°C, worauf sie den Ringraum über das Rohr 43 verlassen. Die weitere, problemlosere Abkühlung geschieht in nachgeschalteten Wärmeübertragern, die sekundärseitig vorzugsweise ebenfalls Bestandteile der Dampferzeugeranlage bilden.During operation of the plant, gases from about 1,400 ° C., which contain soot and slag particles, flow from the aforementioned reactor, not shown, through the lined tube 31 and the neck 7 into the insert 3, in which gas radiation, in particular, reaches the cooled wall of the Use, cooling to around 1,000 ° C takes place. In the area of the lower end of the insert, the gas flow bends upwards, while the vast majority of the soot and slag particles fall into the funnel 23 and are discharged from it with the continuously flowing water. The gases flowing upwards in the annular space 11 between the insert 3 and the shirt 5 are further cooled to about 400 ° C., whereupon they leave the annular space via the pipe 43. The further, easier cooling ge happens in downstream heat exchangers, which preferably also form components of the steam generator system on the secondary side.

Einsatz 3 und Hemd 5 sind im Ausführungsbeispiel über Zugbänder 16 bzw. 17 aufgehängt, die zweckmässig von den Stegblechen zwischen den Rohren 6 ausgehen. Dabei können die Zugbänder 16 im Bereich der oberen Aussenkante des Einsatzes 3 bis zu den etwa horizontal verlaufenden, dicht miteinander verbundenen Rohren 6 des Hemdes 5 gasdicht miteinander verbunden sein, sodass die Räume 10 und 11 vollständig vom Raum ausserhalb des Hemdes 5 ge- trennt sind. Es kann auch zweckmässig sein, insbesondere im oberen Bereich des Ringraums 11 zwischen Einsatz 3 und Hemd 5, eine Verbindungsöffnung zum äusseren Raum vorzusehen, sodass stets ein gewisser Druckausgleich über die Wand des Hemdes entsteht und dieses nicht durch grössere Druckkräfte belastet werden kann.Insert 3 and shirt 5 are suspended in the exemplary embodiment via drawstrings 16 and 17, which expediently start from the web plates between the tubes 6. The drawstrings 16 can be connected gas-tight in the region of the upper outer edge of the insert 3 up to the approximately horizontal, tightly connected tubes 6 of the shirt 5, so that the rooms 10 and 11 are completely separated from the room outside the shirt 5 . It may also be expedient, particularly in the upper region of the annular space 11 between the insert 3 and the shirt 5, to provide a connection opening to the outer space, so that there is always a certain pressure equalization over the wall of the shirt and this cannot be subjected to greater pressure forces.

Die Ecken 50 des Einsatzes 3 und die Ecken 51 des Hemdes 5 sind im Ausführungsbeispiel, wie Figur 2 zeigt, um einen Winkel γ =

Figure imgb0001
= 30° gegeneinander versetzt. Es entstehen dadurch im Raum 11 sechs über den Umfang verteilte Erweiterungen 52, die die Wartung der den Einsatz und das Hemd bildenden Rohrwände wesentlich erleichtern. Aehnliche Erweiterungen 53 ergeben sich zwischen Hemd 5 und der kreiszylindrischen Wand des Druckbehälters 2. Diese Erweiterungen 52, 53 sind über nicht dargestellte Mannlöcher im Druckgefäss 2 und Hemd 5 und/oder über die vorhandenen Druckgefässanschlüsse 34, 35 und 43 erreichbar.The corners 50 of the insert 3 and the corners 51 of the shirt 5 are in the exemplary embodiment, as shown in FIG. 2, by an angle γ =
Figure imgb0001
 = Offset by 30 °. This creates six extensions 52 distributed over the circumference in space 11, which considerably facilitate the maintenance of the tube walls forming the insert and the shirt. A similar extensions 53 result between shirt 5 and the circular cylindrical wall of pressure vessel 2. These extensions 52, 53 can be reached via manholes (not shown) in pressure vessel 2 and shirt 5 and / or via the existing pressure vessel connections 34, 35 and 43.

Bei Heissgaskühlern für Kohlevergasungsanlagen ist es besonders wichtig, dass die Wärmeübertragerflächen gedrungen sind, weil die abzukühlenden Heissgase unter verhältnismässig hohem Ueberdruck von beispielsweise 4 MPa(= rund 40 atü) stehen,was ein verhältnismässiq dickwandiges Druckgefäss bedingt.In hot gas coolers for coal gasification plants, it is particularly important that the heat transfer surfaces are compact because the hot gases to be cooled are under a relatively high overpressure of, for example, 4 MPa (= around 40 atm), which requires a relatively thick-walled pressure vessel.

Claims (4)

1. Heissgaskühler zu einer Kohlevergasungsanlage, bestehend aus einem vertikal angeordneten, im wesentlichen zylinrischen Druckgefäss mit einem koaxial im Druckgefäss angeordneten, einen Fallraum bildenden, über den Umfang geschlossenen Einsatz aus dicht zusammengeschweissten Rohren, wobei diese Rohre Teil des beheizten Drucksystems eines Dampferzeugers sind und wobei der vom Einsatz umschlossene Raum oben über einen das Druckgefäss durchdringenden Gaszufuhrkanal mit einer Reaktionskammer und unten über einen Austrittskanal mit einer Schlackenabführvorrichtung verbunden ist,
dadurch gekennzeichnet, dass der Einsatz von einem ebenfalls aus dicht verschweissten Rohren bestehenden Hemd umgeben ist, sodass ein den Einsatz umgebender,gegenüber dem Druckgefässmantel abgeschlossener Ringraum gebildet ist, der in seinem unteren Bereich mit dem Innenraum des Einsatzes kommuniziert, und dass im oberen Teil des Ringraumes mindestens ein vorzugsweise kühlbarer, am Hemd angeschlossener Gasaustrittkanal (vorgesehen ist, der die Wand des Druckgefässes durchdringt.1.Hot gas cooler to a coal gasification plant, consisting of a vertically arranged, essentially cylindrical pressure vessel with a coaxially arranged in the pressure vessel, forming a falling space, forming a circumferentially closed insert made of tightly welded tubes, these tubes being part of the heated pressure system of a steam generator, and where the space enclosed by the insert is connected at the top to a reaction chamber via a gas supply channel penetrating the pressure vessel and at the bottom via a discharge channel to a slag removal device,
characterized in that the insert is surrounded by a shirt also made of tightly welded pipes, so that an annular space surrounding the insert is formed, which is closed off from the pressure vessel jacket and communicates in its lower region with the interior of the insert, and that in the upper part of the insert Annular space is provided at least one preferably coolable gas outlet channel (connected to the shirt) which penetrates the wall of the pressure vessel. 2. Heissgaskühler nach Anspruch 1, dadurch gekennzeichnet, dass der Einsatz im wesentlichen ein langgestrecktes Prisma mit Polygonquerschnitt, vorzugsweise einem regulären n-Eck-Querschnitt, bildet.2. Hot g askühler according to claim 1, characterized in that the insert essentially forms an elongated prism with a polygonal cross section, preferably a regular n-corner cross section. 3. Heissaaskühler nach Anspruch 2, dadurch gekennzeichnet, dass auch das Hemd im wesentlichen ein langqestrecktes Prisma mit Polygonquerschnitt, vorzugsweise einem regulären n-Eck-Querschnitt,bildet.3. Hot water cooler according to claim 2, characterized in that the shirt also essentially forms an elongated prism with a polygonal cross section, preferably a regular n-corner cross section. 4. Heissgaskühler nach Anspruch 3, wobei Einsatz wie auch Hemd je ein n-eckiges reguläres Prisma bilden, dadurch gekennzeichnet, dass die beiden n-eckigen Prismen bezüglich ihrerLängsachse um den Winkel 3600/2n gegeneinander verdreht sind.4. The hot gas cooler according to claim 3, wherein the insert and the shirt each form an n-square regular prism, characterized in that the two n-square prisms are rotated with respect to one another with respect to their longitudinal axis by the angle 360 0 / 2n.
EP81105939A 1980-09-19 1981-07-28 Hot-gas cooler for a coal gasification plant Expired EP0048326B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7051/80 1980-09-19
CH7051/80A CH653360A5 (en) 1980-09-19 1980-09-19 HEISSGASKUEHLER AT A coal gasification plant.

Publications (4)

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EP0048326A2 true EP0048326A2 (en) 1982-03-31
EP0048326A3 EP0048326A3 (en) 1982-05-26
EP0048326B1 EP0048326B1 (en) 1984-03-21
EP0048326B2 EP0048326B2 (en) 1989-02-01

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EP81105939A Expired EP0048326B2 (en) 1980-09-19 1981-07-28 Hot-gas cooler for a coal gasification plant

Country Status (6)

Country Link
US (1) US4395268A (en)
EP (1) EP0048326B2 (en)
JP (1) JPS5787587A (en)
CH (1) CH653360A5 (en)
DE (2) DE3043855C2 (en)
ZA (1) ZA815916B (en)

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WO1984000411A1 (en) * 1982-07-12 1984-02-02 Stork Ketels Mij Tot Expl Van Vertical radiation tank
EP0131099A2 (en) * 1983-07-07 1985-01-16 GebràœDer Sulzer Aktiengesellschaft Gas heat exchanger, in particular a synthesis gas cooler
EP0199251A1 (en) * 1985-04-26 1986-10-29 Siemens Aktiengesellschaft Waste heat steam generator
EP0251005A1 (en) * 1986-07-02 1988-01-07 GebràœDer Sulzer Aktiengesellschaft Synthesis gas cooler
DE3713912C1 (en) * 1987-04-25 1988-07-21 Babcock Werke Ag Cooler for gases generated by gasification
EP0763589A1 (en) * 1995-09-13 1997-03-19 MAN Gutehoffnungshütte Aktiengesellschaft Refractory lining in the transition between a gasifier and a waste heat boiler
WO2009042274A1 (en) * 2007-09-26 2009-04-02 General Electric Company Radiant coolers and methods for assembling same

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DE3137576C2 (en) * 1981-09-22 1985-02-28 L. & C. Steinmüller GmbH, 5270 Gummersbach Device for cooling process gas originating from a gasification process
CH661054A5 (en) * 1981-10-23 1987-06-30 Sulzer Ag GAS COOLER TO SYNTHESIS GAS GENERATOR.
DE3248096C2 (en) * 1982-12-24 1985-01-31 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Standing device for cooling gases under high pressure with a high proportion of dust
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US5482537A (en) * 1994-05-18 1996-01-09 A. Ahlstrom Corporation Gas filtering apparatus
JP2008056808A (en) * 2006-08-31 2008-03-13 Babcock & Wilcox Co:The Steam generator for containing and cooling synthesis gas
US7670574B2 (en) * 2007-01-19 2010-03-02 General Electric Company Methods and apparatus to facilitate cooling syngas in a gasifier
DE102007045321B4 (en) * 2007-09-21 2009-07-02 Siemens Ag Air flow gasifier with cooling screen and corrugated tube compensator
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FR2530796A1 (en) * 1982-07-21 1984-01-27 Creusot Loire THERMAL CONVERSION AND RECOVERY DEVICE
EP0099833A1 (en) * 1982-07-21 1984-02-01 Creusot-Loire Device for the conversion and recovery of thermal energy
EP0131099A2 (en) * 1983-07-07 1985-01-16 GebràœDer Sulzer Aktiengesellschaft Gas heat exchanger, in particular a synthesis gas cooler
EP0131099A3 (en) * 1983-07-07 1985-05-22 Gebruder Sulzer Aktiengesellschaft Gas heat exchanger, in particular a synthesis gas cooler
EP0199251A1 (en) * 1985-04-26 1986-10-29 Siemens Aktiengesellschaft Waste heat steam generator
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EP0251005A1 (en) * 1986-07-02 1988-01-07 GebràœDer Sulzer Aktiengesellschaft Synthesis gas cooler
DE3713912C1 (en) * 1987-04-25 1988-07-21 Babcock Werke Ag Cooler for gases generated by gasification
EP0763589A1 (en) * 1995-09-13 1997-03-19 MAN Gutehoffnungshütte Aktiengesellschaft Refractory lining in the transition between a gasifier and a waste heat boiler
WO1997010315A2 (en) * 1995-09-13 1997-03-20 MAN Gutehoffnungshütte Aktiengesellschaft Fireproof cladding in the transfer line of a gasifier to the heat recovery boiler
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WO2009042274A1 (en) * 2007-09-26 2009-04-02 General Electric Company Radiant coolers and methods for assembling same
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Also Published As

Publication number Publication date
CH653360A5 (en) 1985-12-31
EP0048326A3 (en) 1982-05-26
ZA815916B (en) 1982-08-25
EP0048326B1 (en) 1984-03-21
US4395268A (en) 1983-07-26
DE3162802D1 (en) 1984-04-26
JPH0253713B2 (en) 1990-11-19
DE3043855C2 (en) 1983-05-19
EP0048326B2 (en) 1989-02-01
JPS5787587A (en) 1982-06-01
DE3043855A1 (en) 1982-04-08

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