EP0135188B2 - Glass tube heat exchanger - Google Patents
Glass tube heat exchangerInfo
- Publication number
- EP0135188B2 EP0135188B2 EP84110858A EP84110858A EP0135188B2 EP 0135188 B2 EP0135188 B2 EP 0135188B2 EP 84110858 A EP84110858 A EP 84110858A EP 84110858 A EP84110858 A EP 84110858A EP 0135188 B2 EP0135188 B2 EP 0135188B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- gas
- glass tube
- tube heat
- clean gas
- 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
Links
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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
- F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
- F28D21/0008—Air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- 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
-
- 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
- F28F21/006—Constructions of heat-exchange apparatus characterised by the selection of particular materials of glass
Definitions
- the invention relates to a glass tube heat exchanger for Warming the washed clean gas stream of an exhaust gas purifier system with hot raw gas, in which the hot raw gas through glass pipes and the cleaned clean gas through one heat exchanger interior limited by inner walls flows to the hot raw gas and the inner walls through heated outside heat transfer medium flowing past will.
- Such a heat exchanger is from DE-A-31 42 485 known.
- Pure gas with the warmth of the hot raw gas are in such gas cleaning plants
- Glass tube heat exchanger used because itself the material glass as special resistant to aggressive components has proven that in raw gas and _ albeit in less quantity _ are present in the clean gas.
- Those parts of the glass tube heat exchanger that cannot be made of glass consist of corrosion-resistant metallic Material, e.g. Chromium nickel steel with extreme high nickel content.
- the present invention is based on the object Glass tube heat exchanger of the type mentioned initially to improve that dew point corrosion step on the outer walls is reliably avoided.
- the heat transfer medium medium consists of heated fresh air from a Fan is kept moving and warming the Fresh air with heating elements takes place as well as parallel to Wall plane of the inner wall arranged an intermediate wall is so that between the inner wall and the intermediate wall an internal cavity is formed as well as on the an external cavity on the other side of the partition, in which the heating elements run, as well as the inside and the outer cavity connected to each other are that the circulating air is initially outside the cavity containing the heating elements and then the internal cavity flows.
- Circulated in the glass tube heat exchanger according to the invention therefore only heated in the cavities of the outer walls Fresh air, causing corrosion from these cavities is excluded.
- the glass tube heat exchanger according to the invention has the advantage that limit the cavities of the outer wall to the outside Wall parts can be made from normal sheet steel, since these wall parts do not come into contact with any corrosive gas come. It is due to the configuration according to the invention possible, the heat in the cavities optimal and the loading to distribute needs accordingly.
- the invention provides make sure that the circulating air flow initially in is heated up in its entirety and then with the warming wall parts is brought into intensive contact.
- Heating elements of hot raw gas flow through glass tubes use.
- the glass tubes serving as heating elements are in parallel lel to the glass tubes of the heat exchanger and in the same tube sheets are stored as this. This will automatically a partial flow of the hot raw gas before the first tube sheet for heating the as glass tubes branches formed and merges in Gas collecting space behind the second tube sheet again this.
- the heated air flow expediently runs in the interior cavity in the same Direction like that flowing through the housing Clean gas flow.
- the internal cavity additionally separate heating element must be assigned.
- This Heating element is switched on if e.g. when starting the plant the raw gas flow still is not sufficiently hot or during current operating periods occur in which the raw gas temperature drops, or if due to upstream system components Raw gas temperature is too low and due to pure Heat recovery from the raw gas one Wall temperature above the Dew point temperature of the clean gas not too to achieve.
- connection flange of the clean gas channel one channel be formed through which a partial flow the heated fresh air is guided. This Characteristic is to be applied in particular if the temperature problems listed above occur.
- the guided through this channel heated fresh air can then vary depending on If necessary, the raw gas or the clean gas be fed or into the atmosphere be derived.
- the glass tube shown in the drawing Heat exchanger has a cuboid Housing 1, in which two tube sheets 2 and 3 have moved in, in which glass tubes 4 are stored are. Is in front of the first tube sheet 2 a raw gas distribution room 5, in which not shown raw gas channel opens. Behind the there is a second tube sheet 3 Raw gas collecting space 6, to which the not Connected raw gas discharge duct connects.
- the clean gas flows through the glass tube Heat exchanger perpendicular to the glass tubes 4. i.e. in Fig. 1 perpendicular to the Fbenc of the drawing.
- the clean gas supply channel and not shown the also not shown Clean gas discharge channels are at each other opposite sides of the cuboid Housing 1 connected.
- Outer walls of the housing 1 are double-walled trained and have one in an outer Wall 7a and an inner wall 7b divided wall 7 on.
- the one from the outer wall 7a and the inner wall 7b is enclosed cavity 8 divided by an intermediate wall 7c outer cavity 8a and an inner Cavity 8b.
- At the two cavities 8a and 8b are the pressure port and the suction port one Fan 9 connected such that the of air delivered to the fan first outer cavity 8a and then the inner Flow through cavity 8b in the circuit.
- hot Glass tubes 10 In the outer cavity 8a is a series of Built-in heating elements that are called hot Glass tubes 10 through which raw gas flows are formed are.
- the glass tubes 10 run parallel to the Glass tubes 4 of the glass tube heat exchanger and are like this in its tube sheets 2 and 3 are used by the Raw gas distribution room 5 ago with hot raw gas supplies and flow into the raw gas collecting space 6 a.
- the heated by the glass tubes 10 Fresh air flows through the inner cavity 8b in the same direction as the clean gas Flows through housing 1 so that the inner wall 7b is heated the most where that still cool and saturated clean gas in contact with it is coming.
- additional heating elements e.g. in the form of Flame tubes 11 may be arranged in the Trap for additional heating to care.
- the raw gas distribution space 5 be formed on the opposite side.
- embodiment is on the Inflow side of the clean gas through a welded sheet 13 along the Connection flange 14 extending channel 15 formed by which a partial flow of heated fresh air is guided.
- the one at this Small type of flange heating occurring Fresh air loss is on the suction side of the Fan 9 added.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Die Erfindung betrifft einen Glasrohrwärmetauscher zur Erwärmung des gewaschenen Reingasstromes einer Abgas-Reini gungsanlage mit heißem Rohgas, bei welchem das heiße Rohgas durch Glasrohre und das gewaschene Reingas durch einen durch innere Wände begrenzten Wärmetauscherinnenraum quer zum heißen Rohgas strömt und die inneren Wände durch ein an ihrer Außenseite vorbeiströmendes Wärmeträgermedium erwärmt werden. The invention relates to a glass tube heat exchanger for Warming the washed clean gas stream of an exhaust gas purifier system with hot raw gas, in which the hot raw gas through glass pipes and the cleaned clean gas through one heat exchanger interior limited by inner walls flows to the hot raw gas and the inner walls through heated outside heat transfer medium flowing past will.
Ein derartiger Wärmetauscher ist aus der DE-A-31 42 485 bekannt. Such a heat exchanger is from DE-A-31 42 485 known.
Glasrohr-Wärmetauscher der genannten Art werden beispielsweise in der Abgasreinigung von Müllverbrennungsanlagen verwendet, die bekanntlich besonders viele Schadstoffe enthalten und ungereinigt nicht emittiert werden dürfen. Für das Erwärmen des gewaschenen Reingases mit der Wärme des heißen Rohgases werden in derartigen Gasreinigungsanlagen Glasrohr-Wärmetauscher verwendet, weil sich das Material Glas als besonders widerstandsfähig gegen agressive Bestandteile erwiesen hat, die im Rohgas und _ wenn auch in geringerer Menge _ im Reingas vorhanden sind. Diejenigen Teile des Glasrohr-Wärmetauschers, die nicht aus Glas gefertige werden können, bestehen aus korrosionsfestem metallischem Werkstoff, z.B. Chromnickelstahl mit extrem hohen Nickelanteilen. Glass tube heat exchanger of the type mentioned for example in exhaust gas cleaning used by waste incinerators as is well known, especially many pollutants contained and not emitted uncleaned allowed to. For heating the washed Pure gas with the warmth of the hot raw gas are in such gas cleaning plants Glass tube heat exchanger used because itself the material glass as special resistant to aggressive components has proven that in raw gas and _ albeit in less quantity _ are present in the clean gas. Those parts of the glass tube heat exchanger that cannot be made of glass, consist of corrosion-resistant metallic Material, e.g. Chromium nickel steel with extreme high nickel content.
Trotz Verwendung solcher korrosionsbeständiger Legierungen, die sehr teuer sind, kommt es bei den nach dem Stande der Technik bekannten Wärmetauschern oft zu einer Lochfraß- sowie Spannungsrißkorrosion und Schwefelsäurekorrosion an den mit dem Rohgas oder dem Reingas in Verbindung kommenden Außenwand-teilen und Anschlußflanschen des Wärmetauschers, und zwar überall dort, wo der Taupunkt unterschritten wird. Bei einem nach dem Stande der Technik (DE-OS 31 42 485) bekannten Wärmetauscher der genannten Art ist zwar bereits versucht worden, die Taupunktunterschreitungen im Bereich der Außenwände des Wärmetauschers auf der Reingasseite dadurch zu vermeiden, daß die Außenwände doppelwandig ausgeführt sind und durch die Hohlräume der Außenwände heißes Rohgas geleitet wird. Despite using such corrosion-resistant alloys that are very are expensive, according to the state heat exchangers known to technology often pitting and stress corrosion cracking and sulfuric acid corrosion on those with the Raw gas or the clean gas in connection upcoming exterior wall parts and Connection flanges of the heat exchanger, and wherever the dew point is fallen below becomes. In a state of the art (DE-OS 31 42 485) known heat exchanger the type mentioned has already been tried the drop below the dew point in the range of External walls of the heat exchanger on the To avoid clean gas side that the External walls are double-walled and hot through the cavities of the outer walls Raw gas is passed.
Es steht jedoch zu erwarten, daß auch bei dieser Bauweise die oben angeführten Korrosionsarten an den genannten Gehäuseteilen nicht zuverlässig vermieden werden können, weil hier das heiße Rohgas, das die Schadstoffe in wesentlich höheren Konzentrationen enthält, mit von dem einströmenden kalten und gesättigten Reingas gekühlten Wandteilen in Berührung kommt, so daß Taupunktunterschreitungen auf der mit dem Rohgas in Berührung kommenden Seite der Wand auftreten können und der Lochfraß sowie die Schwefelsäurekorrosion von dieser Seite der Wand her einsetzen. Die zuletzt genannte Gefahr ist insofern besonders groß, als das durch die Hohlräume der Außenwände strömende heiße Rohgas über seinen Strömungsweg Wärme verliert und auch dort noch mit den von dem einströmenden Reingas gekühlten Wandteilen in Berührung kommt, wo es schon den größten Teil seines Wärmeinhaltes verloren hat. Weiterhin besteht die Gefahr, daß die sich aus dem heißen Rohgas abscheidenden Feststoffe und Sublimationsprodukte in den Hohlräumen der Außenwände festsetzen und sich von dort _ im Gegensatz zu den Glasrohren - nur schwer wieder entfernen lassen. Ein weiterer Nachteil besteht darin, daß die hohl ausgebildeten Außenwände, die als Plattenwärmetauscher zu sehen sind und das Rohgas abkühlen, aufgrund der mit sinkender Temperatur des Rohgases zunehmenden Korrosionsgefahr auch außen aus den erwähnten hochkorrosionsfesten und teuren Speziallegierungen bestehen müssen. Durch unterschreiten der Taupunkttemperatur des Rohgases kann es auch an der nach außen weisenden Wand rohgasseitig zu Schwefelsäurekorrosion kommen. Somit wird das Korrosionsproblem lediglich von der Reingas- auf die Rohgasseite verlagert. However, it is expected that this construction the above Types of corrosion on the housing parts mentioned cannot be reliably avoided because here the hot raw gas that the pollutants in contains much higher concentrations with of the incoming cold and saturated Clean gas cooled wall parts in contact comes, so that dew point falls below who comes into contact with the raw gas Side of the wall can occur and the Pitting and sulfuric acid corrosion from this side of the wall. The last one mentioned danger is particularly great in that through the cavities of the outer walls flowing hot raw gas over his Flow path loses heat and there too still with the incoming clean gas cooled wall parts comes into contact where it already has most of its heat content has lost. There is also a risk that that separate from the hot raw gas Solids and sublimation products in the Establish cavities in the outer walls and from there _ in contrast to the glass tubes - difficult to remove. Another Disadvantage is that the hollow trained outer walls, which as Plate heat exchangers can be seen and that Cool down raw gas due to decreasing Temperature of the raw gas increasing There is also a risk of corrosion from the outside highly corrosion-resistant and expensive Special alloys must exist. By fall below the dew point temperature of the Raw gas can also reach the outside facing wall on the raw gas side Sulfuric acid corrosion. Thus the corrosion problem only from the Clean gas - shifted to the raw gas side.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den Glasrohrwärmetauscher der eingangs genannten Art dahinge hend zu verbessern, daß Korrosion durch Taupunktunter schreitung an den Außenwänden zuverlässig vermieden wird. The present invention is based on the object Glass tube heat exchanger of the type mentioned initially to improve that dew point corrosion step on the outer walls is reliably avoided.
Diese Aufgabe wird dadurch gelöst, daß das Wärmeträger medium aus erwärmter Frischluft besteht, die von einem Ventilator in Bewegung gehalten wird und die Erwärmung der Frischluft mit Heizelementen erfolgt sowie parallel zur Wandebene der inneren Wand eine Zwischenwand angeordnet ist, so daß zwischen der inneren Wand und der Zwischenwand ein innenliegender Hohlraum gebildet wird sowie auf der anderen Seite der Zwischenwand ein außenliegender Hohlraum, in dem die Heizelemente verlaufen, sowie der innenliegende und der außenliegende Hohlraum so miteinander verbunden sind, daß die zirkulierende Luft zunächst den außenliegen den, die Heizelemente aufweisenden Hohlraum und dann den innenliegenden Hohlraum durchströmt. This object is achieved in that the heat transfer medium medium consists of heated fresh air from a Fan is kept moving and warming the Fresh air with heating elements takes place as well as parallel to Wall plane of the inner wall arranged an intermediate wall is so that between the inner wall and the intermediate wall an internal cavity is formed as well as on the an external cavity on the other side of the partition, in which the heating elements run, as well as the inside and the outer cavity connected to each other are that the circulating air is initially outside the cavity containing the heating elements and then the internal cavity flows.
Beim Glasrohr-Wärmetauscher gemäß der Erfindung zirkuliert demnach in den Hohlräumen der Außenwände lediglich erwärmte Frischluft, so daß eine Korrosion von diesen Hohlräumen her ausgeschlossen ist. Durch eine entsprechende Erwärmung dieser Luft ist es ohne weiteres möglich, die mit dem kalten und gesättigten Reingas in Berührung kommenden Wandteile ausreichend warm zu halten, so daß sich dort keine korrosiven Niederschläge bilden können. Weiterhin hat der erfindungsgemäße Glasrohr-Wärmetauscher den Vorteil, daß die die Hohlräume der Außenwand nach außen begrenzenden Wandteile aus normalem Stahlblech gefertigt werden können, da diese Wandteile mit keinem korrosiven Gas in Berührung kommen. Durch die erfindungsgemäße Ausgestaltung ist es möglich, die Wärme in den Hohlräumen optimal und den Be dürfnissen entsprechend zu verteilen. Die Erfindung stellt dabei sicher, daß der zirkulierende Luftstrom zunächst in seiner Gesamtheit stark erwärmt wird und dann mit den zu erwärmenden Wandteilen intensiv in Kontakt gebracht wird. Circulated in the glass tube heat exchanger according to the invention therefore only heated in the cavities of the outer walls Fresh air, causing corrosion from these cavities is excluded. By appropriate heating this air it is easily possible with the cold and saturated clean gas coming into contact Keep wall parts warm enough so that they are there cannot form corrosive precipitation. Furthermore has the glass tube heat exchanger according to the invention has the advantage that limit the cavities of the outer wall to the outside Wall parts can be made from normal sheet steel, since these wall parts do not come into contact with any corrosive gas come. It is due to the configuration according to the invention possible, the heat in the cavities optimal and the loading to distribute needs accordingly. The invention provides make sure that the circulating air flow initially in is heated up in its entirety and then with the warming wall parts is brought into intensive contact.
Aus Gründen der Energieersparnis empfiehlt es sich, als Heizelemente von heißem Rohgas durchströmte Glasrohre zu verwenden. Dabei ergeben sich besondere konstruktive Vor teile, wenn die als Heizelemente dienenden Glasrohre paral lel zu den Glasrohren des Wärmetauschers verlaufen und in denselben Rohrböden gelagert sind wie diese. Hierdurch wird automatisch ein Teilstrom des heißen Rohgases vor dem ersten Rohrboden für die Beheizung der als Glasrohre aus gebildeten Heizelemente abgezweigt und vereinigt sich im Gassammelraum hinter dem zweiten Rohrboden wieder mit diesem. For reasons of energy saving, it is recommended to use Heating elements of hot raw gas flow through glass tubes use. There are special constructive advantages parts if the glass tubes serving as heating elements are in parallel lel to the glass tubes of the heat exchanger and in the same tube sheets are stored as this. This will automatically a partial flow of the hot raw gas before the first tube sheet for heating the as glass tubes branches formed and merges in Gas collecting space behind the second tube sheet again this.
Zweckmäßig verläuft der aufgeheizte Luftstrom in dem innen liegenden Hohlraum in der gleichen Richtung wie der das Gehäuse durchströmende Reingasstrom. Durch diese Maßnahme werden die mit dem einströmenden, noch nicht erwärmten Reingas in Kontakt kommenden Wandteile besonders stark erwärmt, weil die den innen liegenden Hohlraum durchströmende Luft natürlich im Einströmungsbereich noch am wärmsten ist. Hierdurch werden Taupunktunterschreitungen gerade in diesem kritischen Bereich zuverlässig vermieden. The heated air flow expediently runs in the interior cavity in the same Direction like that flowing through the housing Clean gas flow. Through this measure the one with the inflowing, not yet heated clean gas coming into contact Wall parts are particularly hot because the air flowing through the interior cavity of course still in the inflow area is warmest. This will Below this dew point just below critical area reliably avoided.
Zum gleichen Zweck kann gegebenenfalls dem innen liegenden Hohlraum zusätzlich ein separates Zuheizelement zugeordnet sein. Dieses Zuheizelement wird eingeschaltet, wenn z.B. beim Anfahren der Anlage der Rohgasstrom noch nicht ausreichend heiß ist oder während des laufenden Betriebes Zeiträume eintreten, in denen die Rohgastemperatur absinkt, oder wenn durch vorgeschaltete Anlagenteile bedingt die Rohgastemperatur zu niedrig ist und durch reine Wärmerückgewinnung aus dem Rohgas eine Wandtemperatur oberhalb der Taupunkttemperatur des Reingases nicht zu erreichen ist. For the same purpose, the internal cavity additionally separate heating element must be assigned. This Heating element is switched on if e.g. when starting the plant the raw gas flow still is not sufficiently hot or during current operating periods occur in which the raw gas temperature drops, or if due to upstream system components Raw gas temperature is too low and due to pure Heat recovery from the raw gas one Wall temperature above the Dew point temperature of the clean gas not too to achieve.
Um Taupunktunterschreitungen auch im Bereich der Anschlußflansche des Reingaskanales zu vermeiden, ist schließlich vorgesehen, daß der Rohrgasverteilerraum vor dem einen Rohrboden und der Rohgassammelraum hinter dem anderen Rohrboden unmittelbar bis an den Anschluß flansch des Reingaskanales reichen. Hierdurch wird dieser Flansch derart beheizt, daß auch dort Taupunktunterschreitungen ausgeschlossen sind. To fall below the dew point also in Area of the connecting flanges of the Avoiding clean gas channels is after all provided that the tubular gas distribution room in front the one tube plate and the one Raw gas collection room behind the other Pipe base directly up to the connection flange of the clean gas channel. Hereby this flange is heated in such a way that there too Below the dew point are excluded.
Zum gleichen Zweck kann auch im Anschlußflansch des Reingaskanales ein Kanal ausgebildet sein, durch welchen ein Teilstrom der erwärmten Frischluft geführt ist. Dieses Merkmal ist insbesondere dann anzuwenden, wenn die oben angeführten Temperaturprobleme auftreten. Die durch diesen Kanal geführte erwärmte Frischluft kann anschließend je nach Bedarfsfall dem Rohgas oder dem Reingas zugeführt werden oder in die Atmosphäre abgeleitet werden. For the same purpose can also in Connection flange of the clean gas channel one channel be formed through which a partial flow the heated fresh air is guided. This Characteristic is to be applied in particular if the temperature problems listed above occur. The guided through this channel heated fresh air can then vary depending on If necessary, the raw gas or the clean gas be fed or into the atmosphere be derived.
Ein Ausführungsbeispiel der Erfindung wird im
folgenden an Hand der Zeichnung näher
erläutert. Es zeigen:
Der in der Zeichnung dargestellte Glasrohr- Wärmetauscher weist ein quaderförmiges Gehäuse 1 auf, in welches zwei Rohrböden 2 und 3 eingezogen sind, in denen Glasrohre 4 gelagert sind. Vor dem ersten Rohrboden 2 befindet sich ein Rohgasverteilerraum 5, in den der nicht dargestellte Rohgaskanal einmündet. Hinter dem zweiten Rohrboden 3 befindet sich ein Rohgassammelraum 6, an den sich der nicht dargestellte Rohgasabführungskanal anschließt. Das Reingas durchströmt den Glasrohr- Wärmetauscher senkrecht zu den Glasrohren 4. d.h. in Fig. 1 senkrecht zur Fbenc der Zeichnung. Der nicht dargestellte Reingaszufuhrkanal und der ebenfalls nicht dargestellte Reingasabführungskanal sind an einander gegenüberliegenden Seiten des quaderförmigen Gehäuses 1 angeschlossen. Die freibleibenden Außenwände des Gehäuses 1 sind doppelwandig ausgebildet und weisen eine in eine äußere Wand 7a und eine innere Wand 7b geteilte Wand 7 auf. Der von der äußeren Wand 7a und der inneren Wand 7b umschlossene Hohlraum 8 ist von einer Zwischenwand 7c unterteilt in einen äußeren Hohlraum 8a und einen inneren Hohlraum 8b. An die beiden Hohlräume 8a und 8b sind der Druckstutzen und der Saugstutzen eines Ventilators 9 derart angeschlossen, daß die von dem Ventilator geförderte Luft zunächst den äußeren Hohlraum 8a und danach den inneren Hohlraum 8b im Kreislauf durchströmt. The glass tube shown in the drawing Heat exchanger has a cuboid Housing 1, in which two tube sheets 2 and 3 have moved in, in which glass tubes 4 are stored are. Is in front of the first tube sheet 2 a raw gas distribution room 5, in which not shown raw gas channel opens. Behind the there is a second tube sheet 3 Raw gas collecting space 6, to which the not Connected raw gas discharge duct connects. The clean gas flows through the glass tube Heat exchanger perpendicular to the glass tubes 4. i.e. in Fig. 1 perpendicular to the Fbenc of the drawing. The clean gas supply channel and not shown the also not shown Clean gas discharge channels are at each other opposite sides of the cuboid Housing 1 connected. The subject to change Outer walls of the housing 1 are double-walled trained and have one in an outer Wall 7a and an inner wall 7b divided wall 7 on. The one from the outer wall 7a and the inner wall 7b is enclosed cavity 8 divided by an intermediate wall 7c outer cavity 8a and an inner Cavity 8b. At the two cavities 8a and 8b are the pressure port and the suction port one Fan 9 connected such that the of air delivered to the fan first outer cavity 8a and then the inner Flow through cavity 8b in the circuit.
In dem äußeren Hohlraum 8a ist eine Reihe von Heizelementen eingebaut, die als vom heißen Rohgas durchströmte Glasrohre 10 ausgebildet sind. Die Glasrohre 10 verlaufen parallel zu den Glasrohren 4 des Glasrohr-Wärmetauschers und sind wie diese in dessen Rohrböden 2 und 3 eingesetzt, werden also vom Rohgasverteilerraum 5 her mit heißem Rohgas versorgt und münden in den Rohgassammelraum 6 ein. Die von den Glasrohren 10 erwärmte Frischluft durchströmt den inneren Hohlraum 8b in der gleichen Richtung, wie das Reingas das Gehäuse 1 durchströmt, so daß die innere Wand 7b dort am stärksten erwärmt wird, wo das noch kühle und gesättigte Reingas mit ihr in Berührung kommt. Im Einströmungsbereich des inneren Hohlraumes 8b können gegebenenfalls zusätzliche Zuheizelemente, z.B. in Form von Flammrohren 11 angeordnet sein, die im Bedarfsfalle für eine zusätzliche Erwärmung sorgen. In the outer cavity 8a is a series of Built-in heating elements that are called hot Glass tubes 10 through which raw gas flows are formed are. The glass tubes 10 run parallel to the Glass tubes 4 of the glass tube heat exchanger and are like this in its tube sheets 2 and 3 are used by the Raw gas distribution room 5 ago with hot raw gas supplies and flow into the raw gas collecting space 6 a. The heated by the glass tubes 10 Fresh air flows through the inner cavity 8b in the same direction as the clean gas Flows through housing 1 so that the inner wall 7b is heated the most where that still cool and saturated clean gas in contact with it is coming. In the inflow area of the inner Cavity 8b can optionally additional heating elements, e.g. in the form of Flame tubes 11 may be arranged in the Trap for additional heating to care.
Wie aus Fig. 3 ersichtlich ist, reicht der Rohgassammelraum 6 hinter dem Rohrboden 3 bis unmittelbar an den Anschlußflansch 12 des Reingaskanales, so daß auch in diesem kritischen Bereich eine ausreichende Erwärmung gewährleistet ist. In gleicher Weise könnte gegebenenfalls der Rohgasverteilerraum 5 auf der gegenüberliegenden Seite ausgebildet sein. As can be seen from Fig. 3, the Raw gas collecting space 6 behind the tube sheet 3 until immediately to the connecting flange 12 of the Clean gas channel, so that even in this critical Area sufficient heating is guaranteed. In the same way could if necessary, the raw gas distribution space 5 be formed on the opposite side.
Beim in Fig. 3 dargestellten Ausführungsbeispiel ist jedoch auf der Einströmseite des Reingases durch ein aufgeschweißtes Blech 13 ein entlang dem Anschlußflansch 14 verlaufender Kanal 15 gebildet, durch welchen ein Teilstrom der erwärmten Frischluft geführt ist. Der bei dieser Art der Flanschbeheizung auftretende geringe Frischluftverlust wird an der Saugseite des Ventilators 9 ergänzt. The shown in Fig. 3 However, embodiment is on the Inflow side of the clean gas through a welded sheet 13 along the Connection flange 14 extending channel 15 formed by which a partial flow of heated fresh air is guided. The one at this Small type of flange heating occurring Fresh air loss is on the suction side of the Fan 9 added.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84110858T ATE26885T1 (en) | 1983-09-14 | 1984-09-12 | GLASS TUBE HEAT EXCHANGER. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3333057 | 1983-09-14 | ||
DE3333057A DE3333057C1 (en) | 1983-09-14 | 1983-09-14 | Glass tube heat exchanger |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0135188A2 EP0135188A2 (en) | 1985-03-27 |
EP0135188A3 EP0135188A3 (en) | 1985-11-27 |
EP0135188B1 EP0135188B1 (en) | 1987-04-29 |
EP0135188B2 true EP0135188B2 (en) | 1991-03-06 |
Family
ID=6208976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84110858A Expired - Lifetime EP0135188B2 (en) | 1983-09-14 | 1984-09-12 | Glass tube heat exchanger |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0135188B2 (en) |
AT (1) | ATE26885T1 (en) |
DE (1) | DE3333057C1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3534822A1 (en) * | 1985-09-30 | 1987-04-16 | Langbein & Engelbrecht | Glass tube heat exchanger |
DE3905140A1 (en) * | 1989-02-20 | 1990-08-23 | Dieter Dipl Ing Wallstein | HEAT EXCHANGER |
DE3909929C1 (en) * | 1989-03-25 | 1990-05-31 | Langbein & Engelbracht Gmbh & Co Kg, 4630 Bochum, De | Glass tube heat exchanger |
EP2085732B1 (en) | 2008-02-04 | 2014-04-09 | ATEC GmbH & Co. KG | Glass heat exchanger with plastic tube plate |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3142485A1 (en) † | 1981-10-27 | 1983-05-11 | Langbein & Engelbracht GmbH & Co KG, 4630 Bochum | GLASS PIPE HEAT EXCHANGER |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1145912A (en) * | 1956-03-21 | 1957-10-30 | Chausson Usines Sa | Method for manufacturing heat exchangers and exchanger device implementing this method |
JPS5237662U (en) * | 1975-09-10 | 1977-03-17 | ||
CH628134A5 (en) * | 1978-03-28 | 1982-02-15 | Ygnis Sa | FLUE GAS FLOWED HEAT EXCHANGER. |
-
1983
- 1983-09-14 DE DE3333057A patent/DE3333057C1/en not_active Expired
-
1984
- 1984-09-12 EP EP84110858A patent/EP0135188B2/en not_active Expired - Lifetime
- 1984-09-12 AT AT84110858T patent/ATE26885T1/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3142485A1 (en) † | 1981-10-27 | 1983-05-11 | Langbein & Engelbracht GmbH & Co KG, 4630 Bochum | GLASS PIPE HEAT EXCHANGER |
Also Published As
Publication number | Publication date |
---|---|
EP0135188B1 (en) | 1987-04-29 |
EP0135188A3 (en) | 1985-11-27 |
ATE26885T1 (en) | 1987-05-15 |
EP0135188A2 (en) | 1985-03-27 |
DE3333057C1 (en) | 1985-04-18 |
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