EP1498678B1 - Heat exchanger with a bypass tube - Google Patents

Heat exchanger with a bypass tube Download PDF

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Publication number
EP1498678B1
EP1498678B1 EP03015944A EP03015944A EP1498678B1 EP 1498678 B1 EP1498678 B1 EP 1498678B1 EP 03015944 A EP03015944 A EP 03015944A EP 03015944 A EP03015944 A EP 03015944A EP 1498678 B1 EP1498678 B1 EP 1498678B1
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EP
European Patent Office
Prior art keywords
heat exchanger
piston
bypass tube
tube
outlet
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
EP03015944A
Other languages
German (de)
French (fr)
Other versions
EP1498678A1 (en
Inventor
Michael Fix
Konrad Nassauer
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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 EP03015944A priority Critical patent/EP1498678B1/en
Priority to AT03015944T priority patent/ATE338931T1/en
Priority to DE50304958T priority patent/DE50304958D1/en
Priority to DK03015944T priority patent/DK1498678T3/en
Priority to ES03015944T priority patent/ES2271434T3/en
Publication of EP1498678A1 publication Critical patent/EP1498678A1/en
Application granted granted Critical
Publication of EP1498678B1 publication Critical patent/EP1498678B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Definitions

  • the invention relates to a heat exchanger with a bypass tube for cooling hot gases from petrochemical plants by evaporating water with the features of the preamble of claim 1.
  • a heat exchanger for cooling hot gases from petrochemical plants, such as ammonia, hydrogen or methanol production plants or coal gasification plants, with the aid of evaporating water is known.
  • a bypass tube is arranged parallel to the heat exchanger tubes, in which engages a closure member.
  • the closure member of the known heat exchanger consists either of a control plate which is either pivotable or axially displaceable over an outwardly guided rod. Due to the nature of the process gases, the control plate lying in the gas flow is subject to corrosion such as carburizing, decarburization or other removal processes.
  • the invention has for its object to make the closure member and arrange in the heat exchanger that corrosion on the closure member does not occur.
  • the serving as a closure member piston is cooled in the manner indicated. This ensures that the metal temperature of the piston is outside the temperature range in which a process gas-related corrosion such as by carburizing, decarburization or other corrosive removal processes can occur.
  • the illustrated heat exchanger serves to cool hot gases from a petrochemical plant.
  • the heat exchanger contains within an outer shell 1, a tube bundle of straight heat exchanger tubes 2, the ends of which are held in a respective tube plate 3, 4.
  • connection 9 for the supply and with a connection 10 for removal a heat exchange medium provided.
  • a heat exchange medium evaporating water is used.
  • bypass tube 11 is guided through the heat exchanger.
  • the bypass pipe 11 penetrates the tube sheets 3, 4 and connects the inlet chamber 5 with the outlet chamber 6.
  • the bypass tube 11 has a larger cross section than the heat exchanger tubes 2.
  • the outlet-side end of the bypass tube 11 protrudes into the outlet chamber 6 and is connected there to a cylindrical guide tube 12, which runs perpendicular to the longitudinal axis of the bypass tube 11.
  • the guide tube 12 is arranged coaxially with the outlet nozzle 8, wherein between the outlet end of the guide tube 12 and the inlet end of the outlet nozzle 8, an axial distance is present.
  • a piston 13 is arranged axially displaceable, which serves as a closure member for the bypass tube 11.
  • a rear actuating rod 14 is fixed, which is guided through the wall of the outlet chamber 6 to the outside of the heat exchanger and provided there with an actuator, not shown.
  • the piston 13 is designed as a double-walled hollow cylinder, in the interior of which a core 16 made of a ceramic refractory material is arranged. Through the double wall 15 of the piston 13 meandering cooling channels 23 are passed, which are traversed by a coolant.
  • the cooling channels 23 are connected to a supply line 24, which is arranged in the actuating rod 14 and outside of the outlet chamber 6 is provided with a cooling medium inlet 25.
  • the cooling channels terminate in a cooling medium outlet 26, which opens into the outlet chamber 6.
  • a cylindrical slider 17 is connected via a cantilever 18 with the actuating rod 14.
  • the inner diameter of the cylindrical slide 17 is so much larger than the outer diameter of the outlet nozzle 8, that the cylindrical slide can just slide over the outlet nozzle.
  • the cylindrical slide 17 is arranged within the outlet chamber 6 so that it can engage over the outlet nozzle 8.
  • the guide tube 12 is smaller than that of the outlet nozzle 8
  • - as shown in the drawing - the guide tube 12 surrounded by an annular, radially to the guide tube 12 aligned plate 19 whose outer diameter is approximately equal to the inner diameter of the cylindrical slide 17, so that the cylindrical slider 17 can slide over the plate 19.
  • the height of the cylindrical slide 17 is slightly larger than the distance of the annular plate 19 from the upper edge of the outlet nozzle 8, but smaller than the projecting into the outlet chamber 6 height of the outlet nozzle. 8
  • the entering through the inlet nozzle 7 in the inlet chamber 5 stream 20 of the hot process gas is divided into two partial streams 21, 22.
  • the first partial flow 21 flows through the heat exchanger tubes 2 and is thereby cooled.
  • the partial flow 21 passes after flowing through the heat exchanger tubes 2 in the outlet chamber 6.
  • the second partial flow 22 flows through the bypass tube 11, wherein the second partial flow 22 due to the comparatively large diameter of the bypass tube 11 undergoes no cooling.
  • both partial flows 21, 22 enter the outlet connection 8 and are mixed together there. According to the proportions of the partial flows 21, 22, which result from the position of the piston 13, the escaping gas assumes the required end temperature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • External Artificial Organs (AREA)

Abstract

A heat exchanger has a by-pass pipe (2) to cool hot gases emanating from a petrochemical plant by application of water to the pipe. The pipe has an inlet chamber (5) and an outlet chamber (6) and a by-pass pipe that is roughly parallel to and passes through the centre of the heat exchanger. The by-pass pipe has a throttle coupled to a pushrod (14). The by-pass pipe is co-located with a pipe (12) with a twin-walled (15) sliding piston (13) valve. The valve twin walls have cooling channels.

Description

Die Erfindung betrifft einen Wärmetauscher mit einem Bypassrohr zur Kühlung von heißen Gasen aus petrochemischen Anlagen durch verdampfendes Wasser mit den Merkmalen des Obergriffes des Anspruches 1.The invention relates to a heat exchanger with a bypass tube for cooling hot gases from petrochemical plants by evaporating water with the features of the preamble of claim 1.

Aus der EP-B-0 356 648 ist ein Wärmetauscher zur Kühlung heißer Gase aus petrochemischen Anlagen, wie Ammoniak-, Wasserstoffoder Methanolerzeugungsanlagen oder Kohlevergasungsanlagen, mit Hilfe von verdampfendem Wasser bekannt. Um bei einem solchen Wärmetauscher die Gasaustrittstemperatur am Gasaustrittsstutzen konstant zu halten, ist parallel zu den Wärmetauscherrohren ein Bypassrohr angeordnet, in das ein Verschlussorgan eingreift. Je nach der Stellung des Verschlussorgans gelangt eine bestimmte Teilmenge des zu kühlenden Gases ungekühlt durch das Bypassrohr in die Gasaustrittskammer und vermischt sich dort innerhalb eines Mischrohres mit dem gekühlten Gas. Das Verschlussorgan des bekannten Wärmetauschers besteht entweder aus einer Steuerplatte, die entweder schwenkbar oder über eine nach außen geführte Stange axial verschiebbar ist. Die in dem Gasstrom liegende Steuerplatte unterliegt - bedingt durch die Art der Prozessgase - einer Korrosion wie durch Aufkohlung, Entkohlung oder andere Abtragungsprozesse.From EP-B-0 356 648 a heat exchanger for cooling hot gases from petrochemical plants, such as ammonia, hydrogen or methanol production plants or coal gasification plants, with the aid of evaporating water is known. In order to keep the gas outlet temperature at the gas outlet nozzle constant in such a heat exchanger, a bypass tube is arranged parallel to the heat exchanger tubes, in which engages a closure member. Depending on the position of the closure member enters a certain subset of the gas to be cooled uncooled through the bypass pipe in the gas outlet chamber and mixed there within a mixing tube with the cooled gas. The closure member of the known heat exchanger consists either of a control plate which is either pivotable or axially displaceable over an outwardly guided rod. Due to the nature of the process gases, the control plate lying in the gas flow is subject to corrosion such as carburizing, decarburization or other removal processes.

Der Erfindung liegt die Aufgabe zugrunde, das Verschlussorgan so zu gestalten und in dem Wärmetauscher anzuordnen, dass eine Korrosion an dem Verschlussorgan nicht auftritt.The invention has for its object to make the closure member and arrange in the heat exchanger that corrosion on the closure member does not occur.

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

Der als Verschlussorgan dienende Kolben ist in der angegebenen Weise gekühlt. Dadurch wird erreicht, dass die Metalltemperatur des Kolbens außerhalb des Temperaturbereiches liegt, in dem eine prozessgasbedingte Korrosion wie durch Aufkohlung, Entkohlung oder andere korrosive Abtragungsprozesse auftreten können.The serving as a closure member piston is cooled in the manner indicated. This ensures that the metal temperature of the piston is outside the temperature range in which a process gas-related corrosion such as by carburizing, decarburization or other corrosive removal processes can occur.

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

Fig. 1
einen Längsschnitt durch einen Wärmetauscher mit einem Verschlussorgan in halb geöffneter Stellung,
Fig. 2
die Austrittskammer des Wärmetauschers mit einem Verschlussorgan in geschlossener Stellung
Fig. 3
die Austrittskammer des Wärmetauschers mit einem Verschlussorgan in geöffneter Stellung und
Fig. 4
den Längsschnitt durch das Verschlussorgan des Wärmetauschers.
An embodiment of the invention is illustrated in the drawing and will be explained in more detail below. Show it:
Fig. 1
a longitudinal section through a heat exchanger with a closure member in the half-open position,
Fig. 2
the outlet chamber of the heat exchanger with a closure member in the closed position
Fig. 3
the outlet chamber of the heat exchanger with a closure member in the open position and
Fig. 4
the longitudinal section through the closure member of the heat exchanger.

Der dargestellte Wärmetauscher dient zur Kühlung von heißen Gasen aus einer petrochemischen Anlage. Der Wärmetauscher enthält innerhalb eines äußeren Mantels 1 ein Rohrbündel aus geraden Wärmetauscherrohren 2, deren Enden in je einem Rohrboden 3, 4 gehalten sind. Zu beiden Enden des Rohrbündels schließen sich an die Rohrböden 3, 4 eine Eintrittskammer 5 und eine Austrittskammer 6 an, die mit einem Eintrittsstutzen 7 oder einem Austrittsstutzen 8 für die Zuführung des zu kühlenden Gases oder die Abführung des gekühlten Gases versehen sind.The illustrated heat exchanger serves to cool hot gases from a petrochemical plant. The heat exchanger contains within an outer shell 1, a tube bundle of straight heat exchanger tubes 2, the ends of which are held in a respective tube plate 3, 4. At both ends of the tube bundle close to the tube sheets 3, 4 an inlet chamber 5 and an outlet chamber 6, which are provided with an inlet nozzle 7 or an outlet nozzle 8 for the supply of the gas to be cooled or the discharge of the cooled gas.

Der von den Rohrböden 3, 4 und dem Mantel 1 umschlossene Raum ist mit einem Stutzen 9 zur Zuführung und mit einem Stutzen 10 zur Abführung eines Wärmeaustauschmediums versehen. Als Wärmeaustauschmedium wird verdampfendes Wasser verwendet.The space enclosed by the tube plates 3, 4 and the jacket 1 is provided with a connection 9 for the supply and with a connection 10 for removal a heat exchange medium provided. As the heat exchange medium, evaporating water is used.

Etwa mittig und parallel zu den Wärmetauscherrohren 2 ist durch den Wärmetauscher ein Bypassrohr 11 geführt. Das Bypassrohr 11 durchdringt die Rohrböden 3, 4 und verbindet die Eintrittskammer 5 mit der Austrittskammer 6. Das Bypassrohr 11 hat einen größeren Querschnitt als die Wärmetauscherrohre 2.Approximately in the middle and parallel to the heat exchanger tubes 2, a bypass tube 11 is guided through the heat exchanger. The bypass pipe 11 penetrates the tube sheets 3, 4 and connects the inlet chamber 5 with the outlet chamber 6. The bypass tube 11 has a larger cross section than the heat exchanger tubes 2.

Das austrittsseitige Ende des Bypassrohres 11 ragt in die Austrittskammer 6 hinein und ist dort mit einem zylindrischen Führungsrohr 12 verbunden, das senkrecht zur Längsachse des Bypassrohres 11 verläuft. Das Führungsrohr 12 ist koaxial zu dem Austrittsstutzen 8 angeordnet, wobei zwischen dem Austrittsende des Führungsrohres 12 und dem Eintrittsende des Austrittsstutzens 8 ein axialer Abstand vorhanden ist.The outlet-side end of the bypass tube 11 protrudes into the outlet chamber 6 and is connected there to a cylindrical guide tube 12, which runs perpendicular to the longitudinal axis of the bypass tube 11. The guide tube 12 is arranged coaxially with the outlet nozzle 8, wherein between the outlet end of the guide tube 12 and the inlet end of the outlet nozzle 8, an axial distance is present.

Innerhalb des senkrecht zur Längsachse des Bypassrohres 11 verlaufenden Führungsrohres 12 ist ein Kolben 13 axial verschiebbar angeordnet, der als Verschlussorgan für das Bypassrohr 11 dient. An dem Kolben 13 ist eine rückwärtige Betätigungsstange 14 befestigt, die durch die Wand der Austrittskammer 6 nach außerhalb des Wärmetauschers geführt und dort mit einem nicht gezeigten Stellantrieb versehen ist.Within the guide tube 12 extending perpendicular to the longitudinal axis of the bypass tube 11, a piston 13 is arranged axially displaceable, which serves as a closure member for the bypass tube 11. On the piston 13, a rear actuating rod 14 is fixed, which is guided through the wall of the outlet chamber 6 to the outside of the heat exchanger and provided there with an actuator, not shown.

Der Kolben 13 ist als doppelwandiger Hohlzylinder ausgebildet, in dessen Innenraum ein Kern 16 aus einer keramischen feuerfesten Masse angeordnet ist. Durch die Doppelwand 15 des Kolbens 13 sind mäanderförmig Kühlkanäle 23 hindurchgeführt, die von einem Kühlmittel durchflossen sind. Die Kühlkanäle 23 sind an eine Zuführungsleitung 24 angeschlossen, die in der Betätigungsstange 14 angeordnet und außerhalb der Austrittskammer 6 mit einem Kühlmediumeintritt 25 versehen ist.The piston 13 is designed as a double-walled hollow cylinder, in the interior of which a core 16 made of a ceramic refractory material is arranged. Through the double wall 15 of the piston 13 meandering cooling channels 23 are passed, which are traversed by a coolant. The cooling channels 23 are connected to a supply line 24, which is arranged in the actuating rod 14 and outside of the outlet chamber 6 is provided with a cooling medium inlet 25.

Die Kühlkanäle enden in einem Kühlmediumaustritt 26, der in die Austrittskammer 6 mündet.The cooling channels terminate in a cooling medium outlet 26, which opens into the outlet chamber 6.

Ein zylindrischer Schieber 17 ist über einen Kragarm 18 mit der Betätigungsstange 14 verbunden. Der Innendurchmesser des zylindrischen Schiebers 17 ist um so viel größer als der Außendurchmesser des Austrittsstutzens 8, dass der zylindrische Schieber gerade über den Austrittsstutzen gleiten kann. Der zylindrische Schieber 17 ist innerhalb der Austrittskammer 6 so angeordnet, dass er den Austrittsstutzen 8 übergreifen kann.A cylindrical slider 17 is connected via a cantilever 18 with the actuating rod 14. The inner diameter of the cylindrical slide 17 is so much larger than the outer diameter of the outlet nozzle 8, that the cylindrical slide can just slide over the outlet nozzle. The cylindrical slide 17 is arranged within the outlet chamber 6 so that it can engage over the outlet nozzle 8.

Ist der Außendurchmesser des Führungsrohres 12 kleiner als der des Austrittstutzens 8, so ist - wie in der Zeichnung dargestellt - das Führungsrohr 12 von einer ringförmigen, radial zum Führungsrohr 12 ausgerichteten Platte 19 umgeben, deren Außendurchmesser etwa gleich dem Innendurchmesser des zylindrischen Schiebers 17 ist, so dass der zylindrische Schieber 17 über die Platte 19 gleiten kann. Die Höhe des zylindrischen Schiebers 17 ist etwas größer als der Abstand der ringförmigen Platte 19 von der Oberkante des Austrittsstutzens 8, aber kleiner als die in die Austrittskammer 6 hineinragende Höhe des Austrittsstutzen 8.If the outer diameter of the guide tube 12 is smaller than that of the outlet nozzle 8, then - as shown in the drawing - the guide tube 12 surrounded by an annular, radially to the guide tube 12 aligned plate 19 whose outer diameter is approximately equal to the inner diameter of the cylindrical slide 17, so that the cylindrical slider 17 can slide over the plate 19. The height of the cylindrical slide 17 is slightly larger than the distance of the annular plate 19 from the upper edge of the outlet nozzle 8, but smaller than the projecting into the outlet chamber 6 height of the outlet nozzle. 8

Der durch den Eintrittsstutzen 7 in die Eintrittskammer 5 eintretende Strom 20 des heißen Prozessgases teilt sich in zwei Teilströme 21, 22. Der erste Teilstrom 21 durchströmt die Wärmetauscherrohre 2 und wird dabei gekühlt. Der Teilstrom 21 gelangt nach dem Durchströmen der Wärmetauscherrohre 2 in die Austrittskammer 6. Der zweite Teilstrom 22 durchströmt das Bypassrohr 11, wobei der zweite Teilstrom 22 aufgrund des vergleichsweise großen Durchmessers des Bypassrohres 11 keine Kühlung erfährt.The entering through the inlet nozzle 7 in the inlet chamber 5 stream 20 of the hot process gas is divided into two partial streams 21, 22. The first partial flow 21 flows through the heat exchanger tubes 2 and is thereby cooled. The partial flow 21 passes after flowing through the heat exchanger tubes 2 in the outlet chamber 6. The second partial flow 22 flows through the bypass tube 11, wherein the second partial flow 22 due to the comparatively large diameter of the bypass tube 11 undergoes no cooling.

Befindet sich der Kolben 13 in der das Bypassrohr 11 verschließenden Stellung (Fig. 2), durchströmt das gesamte über den Eintrittsstutzen 7 zugeführte Gas die Wärmetauscherrohre 2, tritt in die Austrittskammer 6 ein und wird über den Austrittsstutzen 8 abgeführt.If the piston 13 is in the position closing the bypass tube 11 (FIG. 2), the entire gas supplied via the inlet connection 7 flows through the heat exchanger tubes 2, enters the outlet chamber 6 and is discharged via the outlet connection 8.

Ist der Kolben 13 voll geöffnet, ist der Durchgang durch das Bypassrohr 11 freigegeben (Fig. 3). Das zugeführte Gas strömt nun ausschließlich durch das Bypassrohr 11 und das geöffnete Führungsrohr 12 in den Austrittsstutzen 8. In der Offenstellung des Kolbens 13 übergreift gleichzeitig der zylindrische Schieber 17 den Austrittsstutzen 8 und die ringförmige, das Führungsrohr 12 umgebende Platte 19 in einer Weise, dass das Bypassrohr 11 und der Austrittsstutzen 8 von der Austrittskammer 6 abgetrennt sind. Ein eventueller Zutritt des die Wärmetauscherrohre 2 durchströmenden ersten Teilstromes 21 in den Austrittsstutzen 8 wird dadurch verhindert.When the piston 13 is fully opened, the passage through the bypass tube 11 is released (FIG. 3). The supplied gas now flows exclusively through the bypass tube 11 and the open guide tube 12 in the outlet nozzle 8. In the open position of the piston 13 simultaneously engages over the cylindrical slide 17, the outlet nozzle 8 and the annular, the guide tube 12 surrounding plate 19 in such a way the bypass pipe 11 and the outlet nozzle 8 are separated from the outlet chamber 6. A possible access of the heat exchanger tubes 2 by flowing first partial flow 21 into the outlet nozzle 8 is prevented.

In der teilweise geöffneten oder geschlossenen Stellung des Kolbens 13 (Fig. 1) treten beide Teilströme 21, 22 in den Austrittsstutzen 8 ein und werden dort miteinander vermischt. Entsprechend den Anteilen der Teilströme 21, 22, die sich aus der Stellung des Kolbens 13 ergeben, nimmt das austretende Gas die geforderte Endtemperatur ein.In the partially open or closed position of the piston 13 (FIG. 1), both partial flows 21, 22 enter the outlet connection 8 and are mixed together there. According to the proportions of the partial flows 21, 22, which result from the position of the piston 13, the escaping gas assumes the required end temperature.

Claims (6)

  1. Heat exchanger for cooling hot gases from petrochemical plants by vaporised water, consisting of heat exchange tubes (2), a respective inlet chamber (5) and outlet chamber (6) into which the heat exchange tubes (2) open, and a bypass tube (11) which penetrates the heat exchanger approximately centrally and parallelly to the heat exchange tubes (2) and connects the inlet chamber (5) with the outlet chamber (6), wherein a closure element is arranged to be introducible to the cross-section of the bypass tube (11) and closes or frees the cross-section entirely or partly and wherein the closure element is provided with a rearward actuating rod (14) led outwardly, characterised in that the bypass tube (11) is tightly connected with a guide tube (12), that a piston (13) constructed as a closure element is arranged in the guide tube (12) to be axially displaceable, that the piston (13) is of double-wall construction and that coolant channels (23) flowed through by a coolant are formed in the double wall (15) of the piston (13).
  2. Heat exchanger according to claim 1, characterised in that a coolant feed duct (24) connected with the cooling channels (23) in the double wall (15) of the piston (13) is arranged through the actuable rod (14).
  3. Heat exchanger according to claim 1 or 2, characterised in that the piston (13) is formed as a hollow cylinder.
  4. Heat exchanger according to claim 3, characterised in that a core (16) of a ceramic mass is arranged in the hollow cylinder.
  5. Heat exchanger according to one of claims 1 to 4, characterised in that the guide tube (12) is arranged perpendicularly to the longitudinal axis of the bypass tube (11) and coaxially with the outlet stub pipe (8).
  6. Heat exchanger according to one of claims 1 to 5, characterised in that below the piston (13) a cylindrical slider (17) is connected by way of a projecting arm (18) with the actuating rod (14) and that the cylindrical slider (17) in the setting of the piston (13) closing the bypass tube (11) separates the bypass tube (11) and the outlet stub pipe (8) from the outlet chamber (6).
EP03015944A 2003-07-12 2003-07-12 Heat exchanger with a bypass tube Expired - Lifetime EP1498678B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03015944A EP1498678B1 (en) 2003-07-12 2003-07-12 Heat exchanger with a bypass tube
AT03015944T ATE338931T1 (en) 2003-07-12 2003-07-12 HEAT EXCHANGER WITH A BYPASS TUBE
DE50304958T DE50304958D1 (en) 2003-07-12 2003-07-12 Heat exchanger with a bypass tube
DK03015944T DK1498678T3 (en) 2003-07-12 2003-07-12 Heat exchanger with a bypass tube
ES03015944T ES2271434T3 (en) 2003-07-12 2003-07-12 HEAT EXCHANGER WITH A BYPAS TUBE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03015944A EP1498678B1 (en) 2003-07-12 2003-07-12 Heat exchanger with a bypass tube

Publications (2)

Publication Number Publication Date
EP1498678A1 EP1498678A1 (en) 2005-01-19
EP1498678B1 true EP1498678B1 (en) 2006-09-06

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Application Number Title Priority Date Filing Date
EP03015944A Expired - Lifetime EP1498678B1 (en) 2003-07-12 2003-07-12 Heat exchanger with a bypass tube

Country Status (5)

Country Link
EP (1) EP1498678B1 (en)
AT (1) ATE338931T1 (en)
DE (1) DE50304958D1 (en)
DK (1) DK1498678T3 (en)
ES (1) ES2271434T3 (en)

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DE102005057674B4 (en) 2005-12-01 2008-05-08 Alstom Technology Ltd. waste heat boiler
DE102008051268A1 (en) * 2008-10-10 2010-04-15 Mahle International Gmbh cooling device
EP2312252B1 (en) * 2009-10-07 2013-03-20 Lurgi GmbH Waste heat boiler and method for cooling synthesis gas
UA108669C2 (en) * 2010-09-30 2015-05-25 Хальдор Топсьое А/С boiler-utilizer of excess heat
EP2562506A1 (en) * 2011-08-23 2013-02-27 Yu Shen Machinery Co., Ltd. Shell-and-tube heat exchanger
US10190065B2 (en) 2013-03-15 2019-01-29 Mark E. Koenig Feed delivery system and method for gasifier
WO2014143169A1 (en) 2013-03-15 2014-09-18 Koenig Mark E System for processing material for a gasifier
GB2516122B (en) * 2013-03-15 2016-03-23 Mark Koenig Isolation Gate
CN103913078A (en) * 2014-04-16 2014-07-09 曾建 High-temperature waste gas heat recycling device
DE102015013517A1 (en) 2015-10-20 2017-04-20 Borsig Gmbh Heat exchanger
EP3407001A1 (en) 2017-05-26 2018-11-28 ALFA LAVAL OLMI S.p.A. Shell-and-tube equipment with bypass
EP4368933A1 (en) 2022-11-10 2024-05-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Control device for controlling the temperature of a process gas and heat exchanger with a control device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670933A (en) * 1950-02-24 1954-03-02 Thomas J Bay Engine cooling apparatus
DE2846455C2 (en) * 1978-10-23 1980-07-31 Borsig Gmbh, 1000 Berlin Shell and tube heat exchanger with a constant outlet temperature of one of the two media
DE3828034A1 (en) * 1988-08-18 1990-02-22 Borsig Gmbh HEAT EXCHANGER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3262363B1 (en) 2015-02-27 2020-04-29 Technip France Waste heat boiler system and method for cooling a process gas

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DK1498678T3 (en) 2007-01-22
ATE338931T1 (en) 2006-09-15
ES2271434T3 (en) 2007-04-16
EP1498678A1 (en) 2005-01-19
DE50304958D1 (en) 2006-10-19

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