DE102011106004A1 - Plate heat exchanger comprises fins and two groups of channels that are separated from each other by partition walls, where gas introducing unit is provided for supplying gas fraction at lower end of heat exchanger - Google Patents
Plate heat exchanger comprises fins and two groups of channels that are separated from each other by partition walls, where gas introducing unit is provided for supplying gas fraction at lower end of heat exchanger Download PDFInfo
- Publication number
- DE102011106004A1 DE102011106004A1 DE201110106004 DE102011106004A DE102011106004A1 DE 102011106004 A1 DE102011106004 A1 DE 102011106004A1 DE 201110106004 DE201110106004 DE 201110106004 DE 102011106004 A DE102011106004 A DE 102011106004A DE 102011106004 A1 DE102011106004 A1 DE 102011106004A1
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- DE
- Germany
- Prior art keywords
- channels
- heat exchanger
- gas
- groups
- plate heat
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
- F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
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- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/32—Details on header or distribution passages of heat exchangers, e.g. of reboiler-condenser or plate heat exchangers
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- 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
- F28D2021/0033—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cryogenic applications
-
- 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
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Die Erfindung betrifft einen Plattenwärmetauscher mit Zwei-Phasen-Zuspeisung am unteren Ende gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a plate heat exchanger with two-phase feed at the lower end according to the preamble of patent claim 1.
Ein derartiger Wärmetauscher ist aus
Derartige Plattenwärmetauscher werden üblicherweise zur Aufwärtsverdampfung eines Zwei-Phasen-Gemischs eingesetzt, zum Beispiel in Erdgasverflüssigungsanlagen und Ethylenanlagen.Such plate heat exchangers are commonly used for the upward evaporation of a two-phase mixture, for example in natural gas liquefaction plants and ethylene plants.
Begriffe wie ”oben”, ”unten”, ”oberhalb” und ”unterhalb” beziehen sich im Folgenden auf die Orientierung des Wärmetauschers im Betrieb.Terms such as "top", "bottom", "above" and "below" refer in the following to the orientation of the heat exchanger during operation.
Plattenwärmetauscher werden insbesondere aus Aluminium mittels Lötverfahren hergestellt. Sie bestehen aus undurchlässigen Trennwänden, zwischen denen gewellte Bleche (”Fins”) angeordnet sind. Die dadurch gebildeten Kanäle (Passagen) werden durch Dichtleisten (”Sidebars”) abgedichtet. Zur Zu- und Abführung von Fluiden dienen Header. Bei der Zufuhr eines Zwei-Phasen-Gemischs ist es in vielen Fällen günstig, die Gas- und die Flüssigphase am unteren Ende des Durchströmungsweges des Wärmetauschers getrennt in benachbarte Kanäle einzuführen, wie es bereits aus
Die Fins sind in den Wärmeaustauschabschnitten in aller Regel längs eingebaut, das heißt die Hauptkanäle der Wellung verlaufen in der Strömungsrichtung der Fluide. Innerhalb von Verteilabschnitten sind sie regelmäßig schräg eingebaut. In kürzeren Abschnitten können auch quer eingebaute Fins (”Hardway-Fins”) vorkommen, die eine verbesserte Querverteilung auf Kosten eines erhöhten Druckverlusts bewirken.The fins are usually longitudinally installed in the heat exchange sections, that is, the main channels of the corrugation extend in the flow direction of the fluids. Within distribution sections, they are regularly installed at an angle. Shorter sections may also include transversely mounted fins ("hardway fins") that provide improved lateral distribution at the expense of increased pressure loss.
Der Erfindung liegt die Aufgabe zugrunde, die Stabilität des Betriebs eines Plattenwärmetauschers der eingangs genannten Art weiter zu erhöhen.The invention has the object to further increase the stability of the operation of a plate heat exchanger of the type mentioned.
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Anstelle der quer eingebauten Fins können auch Fins verwendet werden, die eine andere Orientierung aufweisen, aber einen höheren Strömungswiderstand als die in den übrigen Abschnitten der Kanäle eingesetzten Fins aufweisen.This object is solved by the characterizing features of claim 1. Instead of the transversely mounted fins, it is also possible to use fins which have a different orientation but have a higher flow resistance than the fins used in the remaining sections of the channels.
Stromaufwärts des Wärmetauschers wird das Zwei-Phasen-Gemisch vorzugsweise in einem Abscheider (Phasentrenner) in die Gas- und Flüssigfraktion aufgetrennt. Die Gaseinführungsmittel sind mit dem Gasraum des Abscheiders verbunden, die Flüssigkeitszuführungsmittel mit seinem Flüssigkeitsraum.Upstream of the heat exchanger, the two-phase mixture is preferably separated in a separator (phase separator) in the gas and liquid fraction. The gas introduction means are connected to the gas space of the separator, the liquid supply means with its liquid space.
Es hat sich herausgestellt, dass mit dieser Anordnung ein besonders stabiler Betrieb des Wärmetauschers erreicht werden kann. Insbesondere kann garantiert werden, dass bei Wiederinbetriebnahme nach einem Ausfall das Gas gleichmäßig in alle Kanäle einströmt. Die eintretenden Gas und Flüssigkeitsmengen können in gewissem Rahmen unabhängig voneinander eingestellt werden, beispielsweise durch Regelventile oder die Zusammensetzung des Fluids.It has been found that with this arrangement a particularly stable operation of the heat exchanger can be achieved. In particular, it can be guaranteed that when restarting after a failure, the gas flows evenly into all channels. The incoming gas and liquid quantities can be adjusted independently to some extent, for example by control valves or the composition of the fluid.
Vorzugsweise sind die Kanäle der ersten und der zweiten Gruppe abwechselnd angeordnet, das heißt jeweils ein Kanal der ersten Gruppe ist beidseitig von Kanälen der zweiten Gruppe umgeben und umgekehrt. Dies bewirkt einen besonders effizienten Wärmeübergang.Preferably, the channels of the first and the second group are arranged alternately, that is, in each case one channel of the first group is surrounded on both sides by channels of the second group and vice versa. This causes a particularly efficient heat transfer.
Eine dritte Gruppe von Kanälen kommt bei dieser Ausführungsform der Erfindung nicht vor. Das Wärmeträger-Fluid, das in dem Wärmetauscher in indirekten Wärmeaustausch mit dem Zwei-Phasen-Gemisch aus Gasfraktion und Flüssigfraktion gebracht wird, strömt dabei durch den oberen Teil der ersten oder zweiten Gruppe von Kanälen, die nach unten oberhalb der Gas- und Flüssigkeitszuführungsmittel durch horizontale Dichtleisten abgedichtet sind. Insbesondere weisen die Kanäle der ersten Gruppe oberhalb der Gaseintrittsmittel Dichtleisten auf und die Kanäle der ersten Gruppe werden oberhalb dieser Dichtleisten von dem Wärmeträger-Fluid durchströmt. Die Gasfraktion strömt von dem Gaseintritts aus nach unten und tritt über die Durchbrüche in die Kanäle der zweiten Gruppe über und wird dort mit der Flüssigkeit aus den Flüssigkeitseinführungsmitteln vermischt. Das (rück-)vermischte Zwei-Phasen-Gemisch strömt dann gemeinsam in den Kanälen der zweiten Gruppe aufwärts und tritt in indirekten Wärmeaustausch mit dem Wärmeträger-Fluid.A third group of channels does not occur in this embodiment of the invention. The heat transfer fluid, which is brought in the heat exchanger in indirect heat exchange with the two-phase mixture of gas fraction and liquid fraction, thereby flows through the upper part of the first or second group of channels which passes down above the gas and liquid supply means horizontal sealing strips are sealed. In particular, the channels of the first group above the gas inlet means on sealing strips and the channels of the first group are flowed through above these sealing strips of the heat transfer fluid. The gas fraction flows from the gas inlet down and passes through the openings in the channels of the second group and is mixed there with the liquid from the liquid introduction means. The (re-) mixed two-phase mixture then flows together in the channels of the second group upwards and enters into indirect heat exchange with the heat transfer fluid.
Es ist außerdem günstig, wenn die Durchbrüche mindestens teilweise durch gegenüber der Horizontalen geneigte Schlitze gebildet sind. Dies ist insbesondere bei seitlicher Einspeisung des Gases vorteilhaft.It is also advantageous if the openings are formed at least partially by inclined relative to the horizontal slots. This is particularly advantageous in the case of lateral feed of the gas.
Die Abschnitte der quer eingebauten Fins in beiden Gruppen von Kanälen sind vorzugsweise stromaufwärts der Vermischung von Gas- und Flüssigfraktion angeordnet.The sections of transversely mounted fins in both groups of channels are preferably located upstream of the mixing of gas and liquid fractions.
Die Erfindung sowie weitere Einzelheiten der Erfindung werden im Folgenden anhand eines in den Zeichnungen schematisch dargestellten Ausführungsbeispiels näher erläutert. Hierbei zeigen: The invention and further details of the invention are explained in more detail below with reference to an embodiment schematically illustrated in the drawings. Hereby show:
Die in
In
Oberhalb des Gaseintritts ist die Passage durch eine Dichtleiste
In
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- US 4330308 [0002, 0005] US 4330308 [0002, 0005]
Zitierte Nicht-PatentliteraturCited non-patent literature
- THE STANDARDS OF THE BRAZED ALUMINIUM PLATE-FIN HEAT EXCHANGER MANUFACTURERS' ASSOCIATION, ALPEMA, Second Edition, 2000 [0005] THE STANDARD OF THE BRAZED ALUMINUM PLATE-FIN HEAT EXCHANGER MANUFACTURERS 'ASSOCIATION, ALPEMA, Second Edition, 2000 [0005]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110106004 DE102011106004A1 (en) | 2010-08-06 | 2011-06-30 | Plate heat exchanger comprises fins and two groups of channels that are separated from each other by partition walls, where gas introducing unit is provided for supplying gas fraction at lower end of heat exchanger |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010033634.3 | 2010-08-06 | ||
DE102010033634 | 2010-08-06 | ||
DE201110106004 DE102011106004A1 (en) | 2010-08-06 | 2011-06-30 | Plate heat exchanger comprises fins and two groups of channels that are separated from each other by partition walls, where gas introducing unit is provided for supplying gas fraction at lower end of heat exchanger |
Publications (1)
Publication Number | Publication Date |
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DE102011106004A1 true DE102011106004A1 (en) | 2012-02-09 |
Family
ID=45495174
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Application Number | Title | Priority Date | Filing Date |
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DE201110106004 Withdrawn DE102011106004A1 (en) | 2010-08-06 | 2011-06-30 | Plate heat exchanger comprises fins and two groups of channels that are separated from each other by partition walls, where gas introducing unit is provided for supplying gas fraction at lower end of heat exchanger |
Country Status (1)
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DE (1) | DE102011106004A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105486106A (en) * | 2015-12-29 | 2016-04-13 | 无锡佳龙换热器股份有限公司 | Gas-liquid uniform-distribution heat exchange device for natural gas |
EP3034978A1 (en) * | 2014-12-15 | 2016-06-22 | Korea Institute of Energy Research | Plate type heat exchanger with cutted plate |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330308A (en) | 1979-05-18 | 1982-05-18 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Plate-type heat exchangers |
-
2011
- 2011-06-30 DE DE201110106004 patent/DE102011106004A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330308A (en) | 1979-05-18 | 1982-05-18 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Plate-type heat exchangers |
Non-Patent Citations (1)
Title |
---|
THE STANDARDS OF THE BRAZED ALUMINIUM PLATE-FIN HEAT EXCHANGER MANUFACTURERS' ASSOCIATION, ALPEMA, Second Edition, 2000 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3034978A1 (en) * | 2014-12-15 | 2016-06-22 | Korea Institute of Energy Research | Plate type heat exchanger with cutted plate |
CN105486106A (en) * | 2015-12-29 | 2016-04-13 | 无锡佳龙换热器股份有限公司 | Gas-liquid uniform-distribution heat exchange device for natural gas |
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Legal Events
Date | Code | Title | Description |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140101 |