EP0096823A2 - Method for the recuperation of heat from flue gases - Google Patents
Method for the recuperation of heat from flue gases Download PDFInfo
- Publication number
- EP0096823A2 EP0096823A2 EP83105567A EP83105567A EP0096823A2 EP 0096823 A2 EP0096823 A2 EP 0096823A2 EP 83105567 A EP83105567 A EP 83105567A EP 83105567 A EP83105567 A EP 83105567A EP 0096823 A2 EP0096823 A2 EP 0096823A2
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- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- heat
- flue gases
- heat transfer
- condensate
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- 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
- 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
- F28D21/0007—Water heaters
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
Definitions
- the invention relates to a method for recovering heat from flue gases, in which the flue gases are brought into contact with a coolant in a heat exchanger via heat transfer surfaces, thereby partially condensing the components of the flue gas and draining off the condensate.
- This object is achieved according to the invention in a method of the type described at the outset by passing the flue gases essentially vertically from bottom to top along at least one continuous heat transfer surface through the heat exchanger by choosing the length of the heat exchanger and / or the temperature of the coolant in such a way that the condensation occurs in the upper area of the heat exchanger and that the resulting condensate is completely drained off at the bottom of the heat exchanger.
- the hot flue gas is therefore introduced from below into flue gas heat exchanger channels arranged vertically between the heat transfer surfaces and is led upwards with cooling. From a certain height, the wall temperature takes on a value which is below the boiling temperature of the water-acid mixture, so that from this point onwards a liquid film forms, because water and acid increasingly condense. This produces an acid of very weak concentration (approx. 750 mg of acid re on 1 1 water). Due to the vertical arrangement of the heat exchanger surfaces and the vertical guidance of the flue gas, the condensate flows away from the flue gas flow and also wets the heat exchanger walls below, which would normally remain dry due to the still high flue gas temperatures.
- the weakly concentrated condensate flowing down the heat exchanger surface prevents deposits and incrustations from forming in the area of the dew point limit. These usually occur in the dew point range in that the boiling points of water on the one hand and sulfurous acid or sulfuric acid on the other are different (water 373 K, sulfuric acid 611 K). For this reason, the sulfuric acid normally condenses at a lower point than the water, so that highly concentrated liquid acid initially forms in the transition area. However, the condensate generated above this critical area flows downward in the opposite direction to the flue gas flow and rinses off and dilutes the condensed sulfuric acid and the condensed sulfuric acid in this critical area. This rinsing effect effectively prevents deposits and incrustation in this area.
- the overheated flue gas in the lower part of the heat exchanger evaporates part of the falling film and carries it along with its upward flow. This will make the flue gas because of the ent absorption of heat of vaporization and the supply of water vapor cooled faster to the thaw temperature. Mixing with the water vapor promotes heat transfer to the heat transfer surfaces via mass transfer. The condensate is finally cooled well by the long path along the wall before it is completely drained off at the bottom of the heat exchanger.
- the gases emerging from the heat exchanger are further cooled in the evaporator of a heat pump and the condensate which is produced is allowed to flow from top to bottom over the heat exchanger to flush the heat transfer surfaces.
- This additional flushing with the condensate recovered reinforces the advantageous effects explained above, which occur when the condensate trickles down on the heat transfer surfaces.
- the residual gas heat exchanger shown in the drawing has an outer wall 1 which surrounds the actual heat exchanger on all sides and which can be made of ceramic, metal, plastic or another material.
- the space available to the flue gases is delimited by heat transfer surfaces 8 which extend essentially vertically in the area between the annular space 4 and the annular collecting space 6 and continuously pass from bottom to top without having any projections or recesses.
- the heat exchanger is filled with a coolant 9, which can be introduced into the heat exchanger via a feed line 10 arranged on the top side and can be removed again via a discharge line 11 arranged on the bottom side.
- a coolant 9 is in direct thermal contact with the heat transfer surfaces 8.
- a condensate drain 12 is provided on the underside of the annular space 4, which condensate completely drains off from the heat exchanger on the underside of the annular space 4.
- the flue gas having a high temperature comes out of the burner 3 via a boiler system in the lower annular space 4 and flows vertically upwards from it. through the .transmission channels to the annular plenum 6, from which it leaves the heat exchanger via the discharge line 7 again.
- the flue gas flows from bottom to top, it is cooled, the heat extracted from the flue gas being supplied to the coolant via the heat transfer surfaces.
- the length of the heat transfer channels and / or the temperature of the coolant are chosen so that the flue gas is cooled below the dew point in the upper part of the heat exchanger, so that condensation occurs.
- the resulting condensate runs down the inside of the heat transfer channels on the heat transfer surfaces and rinses them in the manner described above, whereby on the one hand a build-up of concentrated acid on the heat transfer surfaces is avoided, while on the other hand the effectiveness of the heat transfer through the condensate is increased.
- the condensate flowing down rinses the heat transfer surfaces of the heat transfer channels over their entire length and finally collects on the underside of the lower annular space 4, where it is completely removed from the heat exchanger via the condensate drain 12.
- the condensate obtained in this way can also be used for flushing the heat transfer surfaces; it is then introduced into the heat transfer channels in a manner which is not apparent from the drawing, so that this additional condensate also trickled down on the heat transfer surfaces.
- the flue gas is enclosed on all sides by the heat transfer surfaces flushed with the coolant, at least in the part where its temperature is too high for condensate formation. Otherwise Wür de in this area the formation of highly concentrated sulfuric acid with the destructive consequences of corrosion occur, which have already been explained above. Due to the heat transfer surfaces extending over the entire length of the flue gas path, however, rinsing by means of the condensate occurs over the entire heat transfer surface up to an area in which no condensate formation can normally be observed, so that the heat transfer surfaces are cleaned over their entire length and protected against the undesired deposition of concentrated acid.
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Rückgewinnung von Wärme aus Rauchgasen, bei welchem man die Rauchgase in einem Wärmetauscher mit einem Kühlmittel über Wärmeübertragungsflächen in Kontakt bringt, dadurch die Bestandteile des Rauchgases teilweise kondensiert und das Kondensat ableitet.The invention relates to a method for recovering heat from flue gases, in which the flue gases are brought into contact with a coolant in a heat exchanger via heat transfer surfaces, thereby partially condensing the components of the flue gas and draining off the condensate.
Ein solches Verfahren zur Rückgewinnung von Wärme aus Rauchgasen ist beispielsweise aus der deutschen Offenlegungsschrift 28 20 826 bekannt.Such a method for recovering heat from flue gases is known, for example, from German Offenlegungsschrift 28 20 826.
Probleme ergeben sich bei solchen Verfahren dadurch, daß die beim Abkühlen der Rauchgase unter den Taupunkt entstehenden Kondensate neben Wasser auch einen Schwefeloxidanteil enthalten, der zusammen mit dem Wasser zur Bildung von schwefliger Säure und Schwefelsäure führt. Auch Stickoxide und Kohlendioxid werden in dem Wasser gelöst und bilden Säuren. Diese Säuren, insbesondere die schweflige Säure und die Schwefelsäure, wirken stark korrodierend und führen bei bisher bekannten Verfahren häufig zur Zerstörung des Wärmetauschers und dabei insbesondere der Wärmeübertragungsflächen.Problems with such processes result from the fact that the condensates which form when the flue gases cool down below the dew point also contain a sulfur oxide content which together with the water leads to the formation of sulfurous acid and sulfuric acid. Nitrogen oxides and carbon dioxide are also dissolved and bil in the water the acids. These acids, in particular the sulphurous acid and the sulfuric acid, have a strongly corrosive effect and frequently lead to destruction of the heat exchanger and, in particular, of the heat transfer surfaces in the case of previously known processes.
Es ist Aufgabe der Erfindung, ein Verfahren zur Rückgewinnung von Wärme aus Rauchgasen derart zu verbessern, daß trotz der Kondensatbildung eine Korrosion des Wärmetauschers zuverlässig vermieden wird.It is an object of the invention to improve a method for recovering heat from flue gases in such a way that corrosion of the heat exchanger is reliably avoided despite the formation of condensate.
Diese Aufgabe wird bei einem Verfahren der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß man die Rauchgase im wesentlichen senkrecht von unten nach oben längs mindenstens einer durchgehenden Wärmeübertragungsfläche durch den Wärmetauscher leitet, daß man die Länge des Wärmetauschers und/oder die Temperatur des Kühlmittels derart wählt, daß die Kondensation im oberen Bereich des Wärmetauschers eintritt, und daß man das entstehende Kondensat an der Unterseite des Wärmetauschers vollständig ableitet.This object is achieved according to the invention in a method of the type described at the outset by passing the flue gases essentially vertically from bottom to top along at least one continuous heat transfer surface through the heat exchanger by choosing the length of the heat exchanger and / or the temperature of the coolant in such a way that the condensation occurs in the upper area of the heat exchanger and that the resulting condensate is completely drained off at the bottom of the heat exchanger.
Bei dem erfindungsgemäßen Verfahren wird also das heiße Rauchgas von unten in senkrecht zwischen den Wärmeübertragungsflächen angeordnete Rauchgas-Wärmetauscherkanäle eingeleitet und unter Abkühlung nach oben geführt. Die Wandtemperatur nimmt ab einer bestimmten Höhe einen Wert an, der unterhalb der Siedetemperatur des Wasser-Säuregemisches liegt, so daß sich von diesem Punkt an aufwärts ein Flüssigkeitsfilm bildet, weil in zunehmendem Maße Wasser und Säure kondensieren. Es entsteht dabei eine Säure sehr schwacher Konzentration (ca. 750 mg Säure auf 1 1 Wasser). Durch die senkrechte Anordung der Wärmetauscherflächen und die senkrechte Führung des Rauchgases fließt das Kondensat dem Rauchgasstrom entgegengesetzt ab und benetzt auch die unten liegenden Wärmetauscherwandungen mit einem Flüssigkeitsfilm, die wegen der noch hohen Rauchgastemperaturen normalerweise trocken bleiben würden.In the method according to the invention, the hot flue gas is therefore introduced from below into flue gas heat exchanger channels arranged vertically between the heat transfer surfaces and is led upwards with cooling. From a certain height, the wall temperature takes on a value which is below the boiling temperature of the water-acid mixture, so that from this point onwards a liquid film forms, because water and acid increasingly condense. This produces an acid of very weak concentration (approx. 750 mg of acid re on 1 1 water). Due to the vertical arrangement of the heat exchanger surfaces and the vertical guidance of the flue gas, the condensate flows away from the flue gas flow and also wets the heat exchanger walls below, which would normally remain dry due to the still high flue gas temperatures.
Durch das an der Wärmetauscherfläche herunterfließende, schwach konzentrierte Kondensat wird vermieden, daß sich im Bereich der Taupunktsgrenze Ablagerungen und Verkrustungen ergeben können. Diese treten normalerweise gerade im Taupunktsbereich dadurch ein, daß die Siedepunkte von Wasser einerseits und schwefliger Säure bzw. Schwefelsäure andererseits verschieden sind (Wasser 373 K, Schwefelsäure 611 K). Aus diesem Grunde kondensiert die Schwefelsäure normalerweise bereits an einem tieferen Punkt als das Wasser, so daß in dem übergangsbereich zunächst hochkonzentrierte flüssige Säure entsteht. Das oberhalb dieses kritischen Bereiches erzeugte Kondensat fließt jedoch entgegen der Richtung des Rauchgasstromes nach unten und spült gerade in diesem kritischen Bereich die kondensierte Schwefelsäure und die kondensierte schweflige Säure ab und verdünnt diese dabei. Dieser Spüleffekt verhindert somit wirkungsvoll eine Ablagerung und Verkrustung in diesem Bereich.The weakly concentrated condensate flowing down the heat exchanger surface prevents deposits and incrustations from forming in the area of the dew point limit. These usually occur in the dew point range in that the boiling points of water on the one hand and sulfurous acid or sulfuric acid on the other are different (water 373 K, sulfuric acid 611 K). For this reason, the sulfuric acid normally condenses at a lower point than the water, so that highly concentrated liquid acid initially forms in the transition area. However, the condensate generated above this critical area flows downward in the opposite direction to the flue gas flow and rinses off and dilutes the condensed sulfuric acid and the condensed sulfuric acid in this critical area. This rinsing effect effectively prevents deposits and incrustation in this area.
Vorteilhaft ist es weiterhin, daß das überhitzte Rauchgas im unteren Teil des Wärmetauschers einen Teil des herabrieselnden Films wieder verdampft und bei seiner Aufwärtsströmung mitschleppt. Dadurch wird das Rauchgas wegen der Entnahme von Verdampfungswärme und der Wasserdampfzufuhr schneller auf die Tautemperatur abgekühlt. Die Durchmischung mit dem Wasserdampf.fördert über Stoffaustausch den Wärmetransport an die Wärmeübertragungsflächen. Das Kondensat wird schließlich durch den langen Weg an der Wand entlang gut ausgekühlt, ehe es an der Unterseite des Wärmetauschers vollständig abgeleitet wird.It is also advantageous that the overheated flue gas in the lower part of the heat exchanger evaporates part of the falling film and carries it along with its upward flow. This will make the flue gas because of the ent absorption of heat of vaporization and the supply of water vapor cooled faster to the thaw temperature. Mixing with the water vapor promotes heat transfer to the heat transfer surfaces via mass transfer. The condensate is finally cooled well by the long path along the wall before it is completely drained off at the bottom of the heat exchanger.
Bei einer vorteilhaften Weiterbildung kann vorgesehen sein, daß man die aus dem Wärmetauscher austretenden Gase im Verdampfer einer Wärmepumpe weiter abkühlt und das entstehende Kondensat zur Spülung der Wärmeübertragungsflächen des Wärmetauschers von oben nach unten über diese fließen läßt. Diese zusätzliche Spülung mit dem weitergewonnenen Kondensat verstärkt die oben erläuterten vorteilhaften Effekte, die beim Herabrieseln des Kondensats an den Wärmeübertragungsflächen eintreten.In an advantageous further development it can be provided that the gases emerging from the heat exchanger are further cooled in the evaporator of a heat pump and the condensate which is produced is allowed to flow from top to bottom over the heat exchanger to flush the heat transfer surfaces. This additional flushing with the condensate recovered reinforces the advantageous effects explained above, which occur when the condensate trickles down on the heat transfer surfaces.
Die nachfolgende Beschreibung eines zur Durchführung des erfindungsgemäßen Verfahrens geeigneten Restwärmetauschers dient im Zusammenhang mit der Zeichnung, die einen im Schnitt widergegebenen Restwärmetauscher darstellt, der näheren Erläuterung.The following description of a residual heat exchanger suitable for carrying out the method according to the invention serves in connection with the drawing, which represents a residual heat exchanger shown in section, for a more detailed explanation.
Der in der Zeichnung dargestellte Restgaswärmetauscher weist eine den eigentlichen Wärmetauscher allseits umgebende Außenwand 1 auf, die aus Keramik, Metall, Kunststoff oder einem anderen Material bestehen kann.The residual gas heat exchanger shown in the drawing has an outer wall 1 which surrounds the actual heat exchanger on all sides and which can be made of ceramic, metal, plastic or another material.
Die Rauchgasableitung 2 eines in der Zeichnung nur schematisch dargestellten Brenners 3 führt im unteren Teil des Wärmetauschers horizontal in einen Ringraum 4, der über senkrechte, parallele Wärmeübertragungskanäle 5 mit einem oberen Ringsammelraum in Verbindung steht. Aus diesem Ringsammelraum 6 werden die Rauchgase über eine Ableitung 7 aus dem Wärmetauscher herausgeführt.The flue
Der den Rauchgasen zur Verfügung stehende Raum wird durch Wärmeübertragungsflächen 8 begrenzt, die sich im Bereich zwischen dem Ringraum 4 und dem Ringsammelraum 6 im wesentlichen senkrecht erstrecken und von unten nach oben kontinuierlich durchgehen, ohne irgendwelche Vor- oder Rücksprünge aufzuweisen. Außerhalb des dem Rauchgas zur Verfügung stehenden Volumens ist der Wärmetauscher mit einem Kühlmittel 9 gefüllt, welches über eine an der Oberseite angeordnete Zuleitung 10 in den Wärmetauscher eingeleitet und über eine an der Unterseite angeordnete Ableitung 11 aus diesem wieder entnommen werden kann. Es kann sich beispielsweise um das rücklaufende Heizwasser einer Heizungsanlage handeln. Das Kühlmittel 9 steht in unmittelbarem Wärmekontakt mit den Wärmeübertragungsflächen 8.The space available to the flue gases is delimited by
An der Unterseite des Ringraumes 4 ist eine Kondensatableitung 12 vorgesehen, die an der Unterseite des Ringraumes 4 gesammeltes Kondensat vollständig aus dem Wärmetauscher ableitet.A
Im Betrieb des beschriebenen Wärmetauschers gelangt das eine hohe Temperatur aufweisende Rauchgas aus dem Brenner 3 über eine Kesselanlage in den unteren Ringraum 4 und strömt von diesem senkrecht nach oben. durch die .Übertragungskanäle bis zum Ringsammelraum 6, aus dem es den Wärmetauscher über die Ableitung 7 wieder verläßt. Bei dem von unten nach oben gerichteten Strom des Rauchgases wird dieses abgekühlt, wobei die dem Rauchgas entzogene Wärme über die Wärmeübertragungsflächen dem Kühlmittel zugeführt wird. Die Länge der Wärmeübertragungskanäle und/oder die Temperatur des Kühlmittels werden dabei so gewählt, daß im oberen Teil des Wärmetauschers das Rauchgas unter den Taupunkt abgekühlt wird, so daß Kondensatbildung eintritt. Das entstehende Kondensat rinnt auf der Innenseite der Wärmeübertragungskanäle an den Wärmeübertragungsflächen nach unten und spült diese in der oben beschriebenen Weise, wobei einerseits eine Ablagerung konzentrierter Säure an den Wärmeübertragungsflächen vermieden wird, während andererseits die Effektivität der Wärmeübertragung durch das Kondensat erhöht wird. Das herabrinnende Kondensat spült die Wärmeübertragungsflächen der Wärmeübertragungskanäle über deren gesamte Länge und sammelt sich schließlich an der Unterseite des unteren Ringraumes 4, wo es über die Kondensatableitung 12 vollständig aus dem Wärmetauscher entfernt wird.During the operation of the heat exchanger described, the flue gas having a high temperature comes out of the
Falls das aus dem oberen Ringsammelraum 6 austretende Rauchgas noch weiter abgekühlt wird, kann das dabei gewonnene Kondensat ebenfalls zur Spülung der Wärmeübertragungsflächen eingesetzt werden, es wird dann in aus der Zeichnung nicht ersichtlicher Weise in die Wärmeübertragungskanäle eingeleitet, so daß dieses zusätzliche Kondensat ebenfalls an den Wärmeübertragungsflächen herabrieselt.If the flue gas emerging from the upper
Für die konstruktive Ausgestaltung des Wärmetauschers ist es wesentlich, daß an keiner Stelle Räume entstehen, in denen sich ein herabrieselndes Kondensat sammeln kann. Es dürfen also keine Vertiefungen entstehen, sondern auch im Bereich der Übergangsstellen von senkrechten in waagerechten Flächen muß dafür Sorge getragen werden, daß immer ein vollständiger Abfluß des Kondensats gewährleistet ist. Andernfalls besteht bei einer Ansammlung von Kondensat an irgendeiner Stelle die Gefahr, daß sich an einer solchen Stelle das Kondensat konzentriert. Eine solche Konzentration kann dadurch eintreten, daß das Wasser infolge seines gegenüber den Säuren niedrigeren Siedepunktes unter dem Einfluß der vorbeiströmenden Rauchgase oder bei Stillstand der Anlage eher verdampft als die Säuren. Die in solchen Vertiefungen zurückbleibenden, konzentrierten Säuren würden stark korrodierend wirken und an diesen Stellen eine Zerstörung des Wärmetauschers einleiten. Es ist also auch bei Schweißnähten etc. darauf zu achten, daß derartige Ansammlungen von Kondensat nicht auftreten können. Günstig ist es in diesem Zusammenhang auch, wenn die Bodenfläche des unteren Ringraums in Richtung auf die Kondensatableitung 12 ein wenig geneigt ist; geneigt werden vorzugsweise auch andere im wesentlichen horizontale Grenzflächen, wie dies aus der Zeichnung ersichtlich ist.For the structural design of the heat exchanger, it is essential that there are no spaces in which a condensate can collect. So there must not be any depressions, but also in the area of the transition points from vertical to horizontal surfaces care must be taken to ensure that a complete drainage of the condensate is always guaranteed. Otherwise, there is a risk of condensate concentrating at such a point that the condensate is concentrated at such a point. Such a concentration can occur in that the water, due to its lower boiling point than the acids, under the influence of the flue gases flowing past or when the system is at a standstill, evaporates more than the acids. The concentrated acids remaining in such depressions would have a highly corrosive effect and would destroy the heat exchanger at these points. It should therefore also be ensured that such accumulations of condensate cannot occur with weld seams etc. In this context, it is also favorable if the bottom surface of the lower annular space is slightly inclined towards the
Wesentlich ist weiterhin, daß das Rauchgas zumindest in dem Teil, wo seine Temperatur zu einer Kondensatbildung zu hoch ist, allseits von den mit dem Kühlmittel bespülten Wärmeübertragungsflächen umschlossen ist. Andernfalls würde in diesem Bereich die Bildung von hochkonzentrierter Schwefelsäure mit den zerstörenden Korrosionsfolgen eintreten, die bereits oben erläutert worden sind. Durch die sich über die gesamte Länge des Rauchgasweges erstreckenden Wärmeübertragungsflächen wird jedoch erreicht, daß eine Spülung mittels des Kondensates über die gesamte Wärmeübertragungsfläche bis zu einem Bereich eintritt, in dem normalerweise keine Kondensatbildung zu beobachten ist, so daß die Wärmeübertragungsflächen über ihre gesamte Länge gereinigt und gegen die unerwünschte Ablagerung konzentrierter Säure geschützt werden.It is also important that the flue gas is enclosed on all sides by the heat transfer surfaces flushed with the coolant, at least in the part where its temperature is too high for condensate formation. Otherwise Wür de in this area the formation of highly concentrated sulfuric acid with the destructive consequences of corrosion occur, which have already been explained above. Due to the heat transfer surfaces extending over the entire length of the flue gas path, however, rinsing by means of the condensate occurs over the entire heat transfer surface up to an area in which no condensate formation can normally be observed, so that the heat transfer surfaces are cleaned over their entire length and protected against the undesired deposition of concentrated acid.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83105567T ATE12543T1 (en) | 1982-06-11 | 1983-06-07 | METHOD OF HEAT RECOVERY FROM FLUE GASES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823222069 DE3222069A1 (en) | 1982-06-11 | 1982-06-11 | METHOD FOR RECOVERING HEAT FROM SMOKE GASES |
| DE3222069 | 1982-06-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0096823A2 true EP0096823A2 (en) | 1983-12-28 |
| EP0096823A3 EP0096823A3 (en) | 1984-02-15 |
| EP0096823B1 EP0096823B1 (en) | 1985-04-03 |
Family
ID=6165873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83105567A Expired EP0096823B1 (en) | 1982-06-11 | 1983-06-07 | Method for the recuperation of heat from flue gases |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0096823B1 (en) |
| AT (1) | ATE12543T1 (en) |
| DE (2) | DE3222069A1 (en) |
| DK (1) | DK153182C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0164098A2 (en) * | 1984-06-06 | 1985-12-11 | Willy Ufer | Heat exchanger |
| EP0179161A1 (en) * | 1983-10-05 | 1986-04-30 | Richard Vetter | Channel for removing flue gases of a boiler device |
| GB2172098A (en) * | 1985-03-06 | 1986-09-10 | Sigri Gmbh | Process for the dissolution of salt deposits in a heat exchanger |
| GB2186958A (en) * | 1986-01-14 | 1987-08-26 | Sogea | Heat recuperators |
| EP0262274A1 (en) * | 1986-09-22 | 1988-04-06 | Emile Percevaut | Recuperator of heat from flue gases from different furnaces capable of cleaning these gases |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726353A (en) * | 1985-08-01 | 1988-02-23 | Raytheon Company | High condensing recuperative furnace |
| DE102012104979A1 (en) | 2012-06-10 | 2013-12-12 | Christian Gierl | Method for recovering heat from flue gases, involves supplying condensate in latter of two heat exchangers through gravitational influence before entering flue gas stream, where heat transfer medium temperature or -flow rate is regulated |
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|---|---|---|---|---|
| DE2720397A1 (en) * | 1977-05-06 | 1978-11-09 | Helmut Ing Grad Junkers | Gas fired central heating boiler - uses flue gas socket with connected cooler to collect gas condensate |
| US4227647A (en) * | 1977-05-25 | 1980-10-14 | Leif Eriksson | Device for cooling chimney gases |
-
1982
- 1982-06-11 DE DE19823222069 patent/DE3222069A1/en not_active Ceased
-
1983
- 1983-06-07 AT AT83105567T patent/ATE12543T1/en not_active IP Right Cessation
- 1983-06-07 DE DE8383105567T patent/DE3360088D1/en not_active Expired
- 1983-06-07 EP EP83105567A patent/EP0096823B1/en not_active Expired
- 1983-06-10 DK DK266483A patent/DK153182C/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2342476A1 (en) * | 1976-02-26 | 1977-09-23 | Telliez Raymond | Recovering heat from combustion gases - using intermediate heat transfer fluid, eliminating corrosion risk and reducing operating costs |
| US4031862A (en) * | 1976-03-10 | 1977-06-28 | Smith Frank J | Economizer |
| DE2803909A1 (en) * | 1977-02-02 | 1978-08-03 | Johannes Hendricus Wedzinga | Room air heater and humidifier - has condenser with twin turbine fans for flue gases and room air, also condensate collector |
| DE2912986A1 (en) * | 1978-04-07 | 1979-10-11 | Rupert Ing Krispler | Furnace exhaust heat recovery system - uses double wall jacket with condensate removal channels forming heat transfer flow passage |
| DE2820826A1 (en) * | 1978-05-12 | 1979-11-15 | Schneider Kg Ask A | Furnace fire heat recovery system - has pipes passing across heat exchanger housing which tapers towards fume outlet |
| FR2483065A1 (en) * | 1980-05-23 | 1981-11-27 | Meca Const | Recovery of heat from mixt. of waste steam and air - which is drawn by suction fan through condenser to obtain hot water usable in mfg. processes or for heating |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0179161A1 (en) * | 1983-10-05 | 1986-04-30 | Richard Vetter | Channel for removing flue gases of a boiler device |
| EP0164098A2 (en) * | 1984-06-06 | 1985-12-11 | Willy Ufer | Heat exchanger |
| EP0164098A3 (en) * | 1984-06-06 | 1986-12-03 | Willy Ufer | Heat exchanger |
| GB2172098A (en) * | 1985-03-06 | 1986-09-10 | Sigri Gmbh | Process for the dissolution of salt deposits in a heat exchanger |
| GB2186958A (en) * | 1986-01-14 | 1987-08-26 | Sogea | Heat recuperators |
| EP0262274A1 (en) * | 1986-09-22 | 1988-04-06 | Emile Percevaut | Recuperator of heat from flue gases from different furnaces capable of cleaning these gases |
Also Published As
| Publication number | Publication date |
|---|---|
| DK153182C (en) | 1988-11-14 |
| DK153182B (en) | 1988-06-20 |
| EP0096823A3 (en) | 1984-02-15 |
| ATE12543T1 (en) | 1985-04-15 |
| DE3360088D1 (en) | 1985-05-09 |
| DK266483A (en) | 1983-12-12 |
| EP0096823B1 (en) | 1985-04-03 |
| DE3222069A1 (en) | 1983-12-15 |
| DK266483D0 (en) | 1983-06-10 |
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