EP1144914B1 - Regenerative post-combustion device - Google Patents

Regenerative post-combustion device Download PDF

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Publication number
EP1144914B1
EP1144914B1 EP00967761A EP00967761A EP1144914B1 EP 1144914 B1 EP1144914 B1 EP 1144914B1 EP 00967761 A EP00967761 A EP 00967761A EP 00967761 A EP00967761 A EP 00967761A EP 1144914 B1 EP1144914 B1 EP 1144914B1
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EP
European Patent Office
Prior art keywords
passage opening
rotary distributor
combustion device
post
gas passage
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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.)
Expired - Lifetime
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EP00967761A
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German (de)
French (fr)
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EP1144914A1 (en
Inventor
Joachim Voigt
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Eisenmann Anlagenbau GmbH and Co KG
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Eisenmann Anlagenbau GmbH and Co KG
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Priority to DK00967761T priority Critical patent/DK1144914T3/en
Publication of EP1144914A1 publication Critical patent/EP1144914A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means

Definitions

  • Regenerative post-combustion devices are e.g. in EP 0 719 984 A2 or EP 0 548 630 A1. They have a rotary distributor, whose upper passages all formed pie-shaped are and all have the same radial extent.
  • the Guiding the various, the rotary distributor interspersed Gases through the rotary distributor through it designed relatively difficult, being also a relative high axial dimension of the rotary distributor and this associated peripheral means for gas routing in Purchase must be taken.
  • the drive unit for the rotary distributor not directly to this but must be with this over an intermediate Drive shaft are connected.
  • the different ones Temperatures in the rotary distributor can also lead to its uneven expansion.
  • the rotary distributor is the subject of US 4,280,416 A is designed as a flat plate, with its underside at different, in different radial distance arranged gas inlet and outlet ports and with their Top on a stationary plate rests, the Distribution space limited downwards. It is very difficult especially given the prevailing temperatures, keep the rotary distributor level. It comes to leaks and jamming the rotary distributor.
  • Object of the present invention is to provide a regenerative Post-combustion device of the aforementioned To design a way so that the rotary distributor as possible simple design and especially against deformation is stable.
  • the rotary distributor according to the invention expands under the Uniform influence of different temperatures, is stable in itself and consists of very easy to manufacture Components that work well, e.g. by welding, can be connected to each other so the different flow paths for the different To form gases.
  • the embodiment may be in particular for this purpose, that the upper boundary plate of the rotary distributor a larger radius than a cylindrical partition the rotary distributor, which partially the flow space limited for cleaning exhaust gas, wherein the clean gas passage opening in the upper boundary plate itself in the radially over the partition projecting area located.
  • a flow-through room in the true sense for the clean gas is not in such a rotary distributor contain more, which further reduces the manufacturing costs.
  • the rotary distributor is a hollow Hub possesses whose interior near its lower End with the purge air connection and near her other end with a purge air flow space the rotary distributor communicates, in which the purge air passage opening on the upper boundary plate the rotary distributor opens.
  • the hollow hub of the rotary distributor saves space as a flow path used for the scavenging air.
  • the regenerative afterburner is in Figure 1 marked overall with the reference numeral 1.
  • Their basic structure and their fundamental Functioning are - unless otherwise stated below in EP 0 548 630 1 or EP 0 719 984 A2, to which express reference is made.
  • an inlet 3 for the exhaust air to be cleaned In the lower part of the post-combustion device 1, which is shown in Figure 1 exclusively is located an inlet 3 for the exhaust air to be cleaned, the via a substantially horizontally extending inlet conduit 4 is supplied.
  • the inlet pipe 4 is at her relative to the housing 2 of the post-combustion device closed radially inner end and has there an upward opening 50.
  • Above this opening 50 is an opening 52 of an annular connecting plate 51, so that both openings 50, 52 of the exhaust air can be flowed through at the top.
  • the outer edge of the Connection plate 51 is via a cylindrical housing wall 53 connected to a horizontally extending partition 44, which closes a distribution space 6 down,
  • a rotary distributor 5 In the surrounded by the housing wall 53, down through the connection plate 51 and up through the partition 44 enclosed space a rotary distributor 5 is housed, by means of a drive device 54 around the axis of the housing 2 continuously or stepwise is rotatable.
  • the rotary valve 5 has a lower annular boundary plate 55 and an upper, circular boundary plate 56 on, the latter has a larger diameter than the former.
  • From Outer edge of the lower boundary plate 55 performs a cylindrical wall 57 to the upper boundary plate 56 and limited in this way one inside the rotary distributor 5 lying space 58. This is radially inward through another conically tapered down annular Partition 59 and through a hollow hub 60 of the rotary distributor 5 limited.
  • the lower boundary plate 55 of the rotary distributor. 5 has generous openings 67 so that the space 58 within the rotary distributor 5 in all rotational positions via the opening 52 of the connection plate 51 with the inlet conduit 4 can communicate.
  • the outer edge of the lower boundary plate 55 of the Drehverteilers 5 is connected via a spring ring 68 with a rigid pressure ring 69 connected in the bottom one or more seals 70 are inserted. These Seals 70 are replaced by the spring ring 68 against the upper surface of the connection plate 51 is pressed.
  • the spring plate In this way 68 is concerned with the compensation of axial expansion differences, for those in known Afterburners a separate compensator is used.
  • annular space 72 is formed, the via a horizontal line 73 with an outlet 74 is connected for clean gas.
  • the clean gas is made from this Outlet 74 by means of a blower, not shown aspirated.
  • the upper restricting plate 56 is the rotary distributor 5 mentally in 11 pie-shaped Sectors are divided, each with an angle of about 32.7 °.
  • a first passage opening 75 introduced, the geometrically can be understood as a circular ring segment and, as will be seen later, the passage of purge air serves.
  • the sector containing the opening 75 following sector is free of passage openings.
  • the radially inner boundary line of Passage opening 76 has a larger radius as the radially outer boundary line of the passage opening 75th
  • the purge air passage opening 75 of the upper boundary plate 56 of the rotary distributor 5 communicates with the surrounded by the partition wall 59 of the rotary distributor 5 Room 61.
  • the passage opening 76 in the upper boundary plate 56 stands with the space 58 of the rotary distributor 5 in connection.
  • the clean gas passage opening 77 of the Upper boundary plate 56 finally lies in the one Area over the cylindrical wall 57 of the rotary distributor 5 projects radially and communicates with the annulus 72 between this wall 57 and the housing wall 53 and so that with the connection 74 for clean gas.
  • Passage opening 79 is radially inwardly through the pipe section 78 limited and has a radially outer circular arc-shaped Boundary line whose radius is equal to the radius of outer boundary line of the purge air passage opening 75 in the upper boundary plate 56 of the rotary distributor 5 is.
  • the radially outermost passage opening 81 in each sector of the partition wall 44 of the distribution space 6 finally covers the same in the radial direction Area such as the passage opening 77 in the upper Boundary plate 56 of the rotary distributor. 5
  • the thermal afterburning apparatus described above works as follows:
  • the exhaust gases then pass through the corresponding Segments of lying above the distribution chamber 6 heat exchanger space and are doing in a known manner until close to the ignition temperature of the exhaust gases heated impurities heated. The afterburning These contaminants will then be found in the combustion chamber instead of the heat exchanger room.
  • the hot, now freed of impurities combustion gases (here briefly called "clean gas”) are determined by certain Segments of the heat exchanger room headed down again, enter into heat exchange with the previously by ascending Exhaust gases heated heat exchanger material and cool off. You get out of the heat exchanger room into the corresponding segments of the distribution space 6. These segments are those their radially outer passage openings 81 with the passage opening 77 in the rotary distributor. 5 communicate. From there the pure gases flow into the Annular space 72 between the rotary distributor 5 and the housing wall 53 and from there via line 73 and the clean gas outlet 74 off.
  • the purge air flow is reversed: The purge air is then via the purge air connection 66th aspirated.
  • the closed sectors in the upper boundary plate 56 of the rotary distributor 5 ensure in a known manner for that none of the passage openings 79, 80, 81 in the lower partition 44 of the distribution chamber 6 at the same time with two openings 75, 76, 77 of the rotary distributor 5, which allows the cleaning function impairing gas bypass.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Valve Device For Special Equipments (AREA)
  • Air Supply (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention relates to a rotary distributor (5) that is provided with a through-opening (6) for waste gas and a through-opening (77) for clean gas on the upper side thereof. Said openings are offset against each other in an angle and are arranged at different radial distances from the axis of the post-combustion device (1). The lower partition wall (44) of the distribution chamber (6) is provided with a through-opening (80) for each segment and for the waste gas and a through-opening (81) for the clean gas. The through-opening (80) for waste gas is provided with the same radial distance from the axis of the post-combustion device (1) as the waste gas through-opening (76) of the rotary distributor (5). Accordingly, the through-opening (81) for clean gas is located in the lower partition wall (44) of the distribution chamber (6) at the same radial distance from the axis of the post-combustion device (1) as the clean gas through-opening (77) of the rotary distributor (5).

Description

Die Erfindung betrifft eine regenerative Nachverbrennungsvorrichtung, welche in einem Gehäuse von oben nach unten umfaßt:

  • a) eine Verbrennungskammer;
  • b) einen Wärmetauscherraum, der in mehrere mit Wärmetauschermaterial gefüllte Segmente unterteilt ist;
  • c) einen Verteilraum, der entsprechend dem Wärmetauscherraum in Segmente unterteilt ist, die jeweils mit einem Segment des Wärmetauscherraumes in Verbindung stehen;
  • d) einen Drehverteiler, der entsprechend seiner Drehstellung herstellt:
  • da) eine Verbindung zwischen einem Einlaß für zu reinigendes Abgas mit mindestens einem ersten Segment des Wärmetauscherraumes;
  • db) eine Verbindung zwischen mindestens einem zweiten Segment des Wärmetauscherraumes und einem Auslaß für Reingas,
    •    und der hierzu an seiner Oberseite mindestens eine Abgas-Durchtrittsöffnung und zu dieser winkelversetzt mindestens eine Reingas-Durchtrittsöffnung aufweist.
    wobei
  • e) die Abgas-Durchtrittsöffnung und die Reingas-Durchtrittsöffnung des Drehverteilers sich in unterschiedlichen Abständen von der vertikalen Achse der Nachverbrennungsvorrichtung befinden;
  • f) die untere Trennwand des Verteilraumes in jedem Segment aufweist:
  • fa) eine erste Durchtrittsöffnung für Abgase, die denselben radialen Abstand von der Achse der Nachverbrennungsvorrichtung besitzt wie die Abgas-Durchtrittsöffnung des Drehverteilers;
  • fb) eine zweite Durchtrittsöffnung für Reingas, die denselben radialen Abstand von der Achse der Nachverbrennungsvorrichtung besitzt wie die Reingas-Durchtrittsöffnung des Drehverteilers.
    • The invention relates to a regenerative afterburning apparatus comprising in a housing from top to bottom:
  • a) a combustion chamber;
  • b) a heat exchanger space which is divided into a plurality of segments filled with heat exchanger material;
  • c) a distribution space, which is divided according to the heat exchanger space into segments, which are each in communication with a segment of the heat exchanger space;
  • d) a rotary distributor, which produces according to its rotational position:
  • da) a connection between an inlet for exhaust gas to be cleaned with at least a first segment of the heat exchanger space;
  • db) a connection between at least a second segment of the heat exchanger chamber and an outlet for clean gas,
    • and for this purpose has on its upper side at least one exhaust gas passage opening and at an angle offset therefrom at least one clean gas passage opening.
    in which
  • e) the exhaust gas passage opening and the clean gas passage opening of the rotary distributor are at different distances from the vertical axis of the post-combustion device;
  • f) has the lower partition wall of the distribution space in each segment:
  • fa) a first passage opening for exhaust gases, which has the same radial distance from the axis of the post-combustion device as the exhaust gas passage opening of the rotary distributor;
  • fb) has a second passage opening for clean gas, which has the same radial distance from the axis of the post-combustion device as the clean gas passage opening of the rotary distributor.

    • Regenerative Nachverbrennungvorrichtungen sind z.B. in der EP 0 719 984 A2 oder der EP 0 548 630 A1 beschrieben. Sie weisen einen Drehverteiler auf, dessen obere Durchtrittsöffnungen sämtlich tortenstückförmig ausgebildet sind und alle dieselbe radiale Erstreckung aufweisen. Die Führung der verschiedenen, den Drehverteiler durchsetzenden Gase durch den Drehverteiler hindurch gestaltet sich dabei verhältnismäßig schwierig, wobei auch eine verhältnismäßig hohe axiale Abmessung des Drehverteilers und der diesem zugeordneten peripheren Einrichtungen zur Gasführung in Kauf genommen werden muß. Im allgemeinen kann die Antriebseinheit für den Drehverteiler nicht direkt an diesen angebaut werden sondern muß mit diesem über eine zwischengeschaltete Antriebswelle verbunden werden. Die unterschiedlichen Temperaturen im Drehverteiler können zudem zu dessen ungleichmäßiger Ausdehnung führen.Regenerative post-combustion devices are e.g. in EP 0 719 984 A2 or EP 0 548 630 A1. They have a rotary distributor, whose upper passages all formed pie-shaped are and all have the same radial extent. The Guiding the various, the rotary distributor interspersed Gases through the rotary distributor through it designed relatively difficult, being also a relative high axial dimension of the rotary distributor and this associated peripheral means for gas routing in Purchase must be taken. In general, the drive unit for the rotary distributor not directly to this but must be with this over an intermediate Drive shaft are connected. The different ones Temperatures in the rotary distributor can also lead to its uneven expansion.

    Diese Probleme werden bei einer regenerativen Nachverbrennungsvorrichtung der eingangs genannten Art, wie sie in der US 4 280 416 A beschrieben ist, weitgehend vermieden. Bei ihr unterscheiden sich die verschiedenen Durchtrittsöffnungen an der Oberseite des Drehverteilers nicht nur in ihrer Winkellage, sondern darüber hinaus im radialen Abstand von der Achse der Nachverbrennungsvorrichtung. Die Durchtrittsöffnungen des Drehverteilers kommunizieren nunmehr nicht mehr alle über die selbe Öffnung in der unteren Trennwand des Verteilraumes mit dem jeweiligen Segment des Verteilraumes, sondern über getrennte Durchtrittsöffnungen in dieser Trennwand, die auf Grund ihres radialen Abstands von der Achse der Nachverbrennungsvorrichtung einer speziellen Durchtrittsöffnung des Drehverteilers zugeordnet sind.These problems are with a regenerative afterburner of the type mentioned, as they in US 4,280,416 A is largely avoided. In her different the different openings at the top of the rotary distributor not only in their angular position, but beyond at the radial distance from the axis of the post-combustion device. The passages of the rotary distributor not all now communicate about the same opening in the lower partition of the distribution space with the respective segment of the distribution space, but via separate Passageways in this partition, based on its radial distance from the axis of the post-combustion device a special passage opening of the Rotary distributor are assigned.

    Der Drehverteiler ist beim Gegenstand der US 4 280 416 A als ebene Platte ausgebildet, die mit ihrer Unterseite an verschiedenen, in unterschiedlichem radialen Abstand angeordneten Gaseinlaß- und Auslaßkanälen und mit ihrer Oberseite an einer stationären Platte anliegt, die den Verteilraum nach unten begrenzt. Dabei ist es sehr schwierig, insbesondere angesichts der herrschenden Temperaturen, den Drehverteiler eben zu halten. Es kommt zu Undichtigkeiten und zu einem Verklemmen des Drehverteilers.The rotary distributor is the subject of US 4,280,416 A is designed as a flat plate, with its underside at different, in different radial distance arranged gas inlet and outlet ports and with their Top on a stationary plate rests, the Distribution space limited downwards. It is very difficult especially given the prevailing temperatures, keep the rotary distributor level. It comes to leaks and jamming the rotary distributor.

    Aufgabe der vorliegenden Erfindung ist es, eine regenerative Nachverbrennungsvorrichtung der eingangs genannten Art so auszugestalten, daß der Drehverteiler möglichst einfach aufgebaut und insbesondere gegen Verformungen stabil ist.Object of the present invention is to provide a regenerative Post-combustion device of the aforementioned To design a way so that the rotary distributor as possible simple design and especially against deformation is stable.

    Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß

  • g) der Drehverteiler eine obere Begrenzungsplatte, in welcher die Abgas-Durchtrittsöffnung und die Reingas-Durchtrittsöffnung und ggf. die Spülluft-Durchtrittsöffnung ausgebildet sind, eine untere Begrenzungsplatte, in welcher eine mit dem Einlaß für die zu reinigenden Abgase kommunizierende Öffnung vorgesehen ist, sowie eine Trennwand umfaßt, welche die beiden Begrenzungsplatten miteinander verbindet und in dem Drehverteiler zumindest teilweise einen Durchströmungsraum für zu reinigende Abgase begrenzt.
    • This object is achieved in that
  • g) the rotary distributor an upper boundary plate, in which the exhaust gas passage opening and the clean gas passage opening and possibly the purge air passage opening are formed, a lower boundary plate, in which a communicating with the inlet for the exhaust gases to be cleaned is provided, and comprises a partition which connects the two boundary plates with each other and at least partially limits in the rotary distributor a flow space for exhaust gases to be cleaned.

    • Der erfindungsgemäße Drehverteiler dehnt sich unter dem Einfluß unterschiedlicher Temperaturen gleichmäßig aus, ist in sich stabil und besteht aus sehr einfach herzustellenden Komponenten, die problemlos, z.B. durch Schweißen, miteinander verbunden werden können, um so die verschiedenen Durchströmungswege für die verschiedenen Gase zu bilden.The rotary distributor according to the invention expands under the Uniform influence of different temperatures, is stable in itself and consists of very easy to manufacture Components that work well, e.g. by welding, can be connected to each other so the different flow paths for the different To form gases.

    Bei fast allen regenerativen Nachverbrennungsvorrichtungen, so auch denjenigen, die in den oben genannten Druckschriften beschrieben sind, werden durch den Drehverteiler nicht nur zu reinigendes Abgas und Reingas, sondern darüber hinaus auch Spülluft hindurchgeleitet. Diese reinigt die Segmente, die zuvor von Abgas durchströmt worden waren, bevor sie zum Durchgang von Reingas genutzt werden. Die Drehverteiler dieser regenerativen Nachverbrennungsvorrichtungen können daher entsprechend ihrer Drehstellung auch eine Verbindung zwischen einem Anschluß für Spülluft und mindestens einem dritten Segment des Wärmetauscherraumes herstellen und besitzen hierzu an ihrer Oberseite mindestens eine Spülluft-Durchtrittsöffnung, die gegen die Abgas-Durchtrittsöffnung und gegen die Reingas-Durchtrittsöffnung winkelversetzt ist. Derartige regenerative Nachverbrennungsvorrichtungen lassen sich erfindungsgemäß besonders günstig dahingehend ausgestalten, daß

  • a) die Spülluft-Durchtrittsöffnung des Drehverteilers sich in einem radialen Abstand von der Achse der Nachverbrennungsvorrichtung befindet, der sich von demjenigen der Abgas-Durchtrittsöffnung und demjenigen der Reingas-Durchtrittsöffnung unterscheidet;
  • b) die untere Trennwand des Verteilraumes für jedes Segment eine Durchtrittsöffnung für Spülluft aufweist, die denselben radialen Abstand von der Achse der Nachverbrennungsvorrichtung besitzt wie die Spülluftdurchtrittsöffnung des Drehverteilers.
    • In almost all regenerative Nachverbrennungsvorrichtungen, including those described in the above publications, not only to be cleaned exhaust gas and clean gas, but also purge air are passed through the rotary distributor. This cleans the segments that had previously been flowed through by exhaust gas before they are used for the passage of clean gas. The rotary distributor of these regenerative Nachverbrennungsvorrichtungen can therefore produce according to their rotational position and a connection between a connection for scavenging air and at least a third segment of the heat exchanger chamber and have this on its upper side at least one purge air passage opening, against the exhaust gas passage opening and against the clean gas passage opening is angularly offset. Such regenerative Nachverbrennungsvorrichtungen can be configured according to the invention particularly favorable effect that
  • a) the purging air passage opening of the rotary distributor is located at a radial distance from the axis of the post-combustion device, which differs from that of the exhaust gas passage opening and that of the clean gas passage opening;
  • b) the lower partition of the distribution space for each segment has a passage opening for purging air, which has the same radial distance from the axis of the post-combustion device as the purging air passage opening of the rotary distributor.

    • Beim Durchleiten von drei verschiedenen Gasströmungen durch den Drehverteiler erweisen sich die Vorteile des Prinzips, die Durchtrittsöffnungen des Drehverteilers nicht nur durch ihre Winkelposition sondern auch durch ihren radialen Abstand von der Achse der Nachverbrennungsvorrichtung zu unterscheiden, besonders groß.When passing through three different gas flows through the rotary distributor, the benefits of the Principle, the passages of the rotary distributor not only by their angular position but also by its radial distance from the axis of the post-combustion device to distinguish, especially big.

    Aus Gründen der Bauhöhe ist es günstig, wenn die Reingas-Durchtrittsöffnung in der oberen Begrenzungsplatte des Drehverteilers über einen radial nach außen geöffneten Bereich des Drehverteilers mit einem Ringraum verbunden ist, der seinerseits mit dem Auslaß für Reingas in Verbindung steht. Dies bedeutet, daß das Reingas, welches über die Reingas-Durchtrittsöffnung in axialer Richtung von dem Verteilraum nach unten durchtritt, den Drehverteiler selbst nicht vollständig in axialer Richtung durchströmt sondern innerhalb des Drehverteilers radial nach außen umgelenkt wird. Für diesen Gasstrom werden also an der Unterseite des Drehverteilers keine Anschlußkomponenten mehr benötigt.For reasons of height, it is advantageous if the clean gas passage opening in the upper boundary plate of the Rotary distributor via a radially outwardly open Area of the rotary distributor connected to an annulus which, in turn, communicates with the outlet for clean gas stands. This means that the clean gas, which over the clean gas passage opening in the axial direction of down the distribution space, the rotary distributor itself does not flow completely through in the axial direction but within the rotary distributor radially outward is diverted. For this gas flow are so at the Bottom of the rotary distributor no connection components more needed.

    Die Ausgestaltung kann hierzu insbesondere so sein, daß die obere Begrenzungsplatte des Drehverteilers einen größeren Radius aufweist als eine zylindrische Trennwand des Drehverteilers, welche teilweise den Durchströmungsraum für zu reinigendes Abgas begrenzt, wobei die Reingas-Durchtrittsöffnung in der oberen Begrenzungsplatte sich in deren radial über die Trennwand überstehendem Bereich befindet. Ein Durchströmungsraum im eigentlichen Sinne für das Reingas ist in einem solchen Drehverteiler nicht mehr enthalten, was die Herstellungskosten weiter reduziert.The embodiment may be in particular for this purpose, that the upper boundary plate of the rotary distributor a larger radius than a cylindrical partition the rotary distributor, which partially the flow space limited for cleaning exhaust gas, wherein the clean gas passage opening in the upper boundary plate itself in the radially over the partition projecting area located. A flow-through room in the true sense for the clean gas is not in such a rotary distributor contain more, which further reduces the manufacturing costs.

    Für regenerative Nachverbrennungsvorrichtungen, die mit über den Drehverteiler geführter Spülluft arbeiten, empfiehlt sich schließlich diejenige Ausgestaltung der Erfindung, bei welcher der Drehverteiler eine hohle Nabe besitzt, deren Innenraum in der Nähe ihres unteren Endes mit dem Spülluft-Anschluß und in der Nähe ihres anderen Endes mit einem Spülluft-Durchströmungsraum des Drehverteilers kommuniziert, in welchen die Spülluft-Durchtrittsöffnung an der oberen Begrenzungsplatte des Drehverteilers mündet. Auf diese Weise wird die hohle Nabe des Drehverteilers platzsparend als Strömungsweg für die Spülluft genutzt.For regenerative afterburners, the work with scavenging air guided via the rotary distributor, Finally, we recommend the design of the Invention in which the rotary distributor is a hollow Hub possesses whose interior near its lower End with the purge air connection and near her other end with a purge air flow space the rotary distributor communicates, in which the purge air passage opening on the upper boundary plate the rotary distributor opens. In this way, the hollow hub of the rotary distributor saves space as a flow path used for the scavenging air.

    Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert; es zeigen

    Figur 1:
    einen vertikalen Axialschnitt durch den unteren Bereich einer regenerativen Nachverbrennungsvorrichtung;
    Figur 2:
    einen Schnitt gemäß Linie II-II von Figur 1;
    Figur 3:
    eine Draufsicht auf den Drehverteiler der Nachverbrennungsvorrichtung von Figur 1.
    An embodiment of the invention will be explained in more detail with reference to the drawing; show it
    FIG. 1:
    a vertical axial section through the lower portion of a regenerative Nachverbrennungsvorrichtung;
    FIG. 2:
    a section along line II-II of Figure 1;
    FIG. 3:
    a top view of the rotary distributor of the post-combustion device of Figure 1.

    Die regenerative Nachverbrennungsvorrichtung ist in Figur 1 insgesamt mit dem Bezugszeichen 1 gekennzeichnet. Ihr grundsätzlicher Aufbau und ihre grundsätzliche Funktionsweise sind - soweit nachfolgend nichts anderes gesagt ist - in der EP 0 548 630 1 oder der EP 0 719 984 A2 beschrieben, worauf ausdrücklich verwiesen wird.The regenerative afterburner is in Figure 1 marked overall with the reference numeral 1. Their basic structure and their fundamental Functioning are - unless otherwise stated below in EP 0 548 630 1 or EP 0 719 984 A2, to which express reference is made.

    Im unteren Bereich der Nachverbrennungsvorrichtung 1, der in Figur 1 ausschließlich gezeigt ist, befindet sich ein Einlaß 3 für die zu reinigende Abluft, die über eine im wesentlichen horizontal verlaufende Einlaßleitung 4 zugeführt wird. Die Einlaßleitung 4 ist an ihrem bezogen auf das Gehäuse 2 der Nachverbrennungsvorrichtung radial inneren Ende verschlossen und besitzt dort eine nach oben gerichtete Öffnung 50. Über dieser Öffnung 50 liegt eine Öffnung 52 einer ringförmigen Anschlußplatte 51, sodaß beide Öffnungen 50, 52 von der Abluft nach oben durchströmt werden können. Der äußere Rand der Anschlußplatte 51 ist über eine zylindrische Gehäusewand 53 mit einer horizontal verlaufenden Trennwand 44 verbunden, welche einen Verteilraum 6 nach unten abschließt,In the lower part of the post-combustion device 1, which is shown in Figure 1 exclusively is located an inlet 3 for the exhaust air to be cleaned, the via a substantially horizontally extending inlet conduit 4 is supplied. The inlet pipe 4 is at her relative to the housing 2 of the post-combustion device closed radially inner end and has there an upward opening 50. Above this opening 50 is an opening 52 of an annular connecting plate 51, so that both openings 50, 52 of the exhaust air can be flowed through at the top. The outer edge of the Connection plate 51 is via a cylindrical housing wall 53 connected to a horizontally extending partition 44, which closes a distribution space 6 down,

    In dem von der Gehäusewand 53 umgebenen, nach unten durch die Anschlußplatte 51 und nach oben durch die Trennwand 44 abgeschlossenen Raum ist ein Drehverteiler 5 untergebracht, der mit Hilfe einer Antriebseinrichtung 54 um die Achse des Gehäuses 2 kontinuierlich oder schrittweise verdrehbar ist. Der Drehschieber 5 weist eine untere, ringförmige Begrenzungsplatte 55 sowie eine obere, kreisrunde Begrenzungsplatte 56 auf, wobei letztere einen größeren Durchmesser als erstere aufweist. Vom Außenrand der unteren Begrenzungsplatte 55 führt eine zylindrische Wand 57 zur oberen Begrenzungsplatte 56 und begrenzt auf diese Weise einen innerhalb des Drehverteilers 5 liegenden Raum 58. Dieser wird radial nach innen durch eine weitere sich konisch nach unten verjüngende ringförmige Trennwand 59 und durch eine hohle Nabe 60 des Drehverteilers 5 begrenzt.In the surrounded by the housing wall 53, down through the connection plate 51 and up through the partition 44 enclosed space a rotary distributor 5 is housed, by means of a drive device 54 around the axis of the housing 2 continuously or stepwise is rotatable. The rotary valve 5 has a lower annular boundary plate 55 and an upper, circular boundary plate 56 on, the latter has a larger diameter than the former. from Outer edge of the lower boundary plate 55 performs a cylindrical wall 57 to the upper boundary plate 56 and limited in this way one inside the rotary distributor 5 lying space 58. This is radially inward through another conically tapered down annular Partition 59 and through a hollow hub 60 of the rotary distributor 5 limited.

    Der von der Trennwand 59 und der hohlen Nabe 60 umschlossene Raum 61 steht über Fenster 62 im oberen Bereich der Mantelfläche der Nabe 60 mit deren Innenraum in Verbindung. Dieser kommuniziert seinerseits wieder über ähnliche Fenster 63 im unteren Bereich der Nabe 60 mit einem Einlaßplenum 64, das seinerseits über eine horizontale Leitung 65 mit einem Spülluft-Anschluß 66 verbunden ist.The enclosed by the partition wall 59 and the hollow hub 60 Room 61 is above window 62 in the upper area the lateral surface of the hub 60 with the interior in Connection. This in turn communicates again similar window 63 in the lower region of the hub 60 with a Einlaßplenum 64, which in turn over a horizontal Line 65 is connected to a purge air connection 66 is.

    Die untere Begrenzungsplatte 55 des Drehverteilers 5 weist großzügige Öffnungen 67 auf, so daß der Raum 58 innerhalb des Drehverteilers 5 in allen Drehstellungen über die Öffnung 52 der Anschlußplatte 51 mit der Einlaßleitung 4 kommunizieren kann.The lower boundary plate 55 of the rotary distributor. 5 has generous openings 67 so that the space 58 within the rotary distributor 5 in all rotational positions via the opening 52 of the connection plate 51 with the inlet conduit 4 can communicate.

    Der äußere Rand der unteren Begrenzungsplatte 55 des Drehverteilers 5 ist über einen Federring 68 mit einem starren Druckring 69 verbunden, in dessen Unterseite eine oder mehrere Dichtungen 70 eingelegt sind. Diese Dichtungen 70 werden durch den Federring 68 gegen die obere Fläche der Anschlußplatte 51 angedrückt. Das Federblech 68 besorgt auf diese Weise die Kompensation von axialen Dehnungsunterschieden, für die bei bekannten Nachverbrennungsvorrichtungen ein gesonderter Kompensator verwendet wird.The outer edge of the lower boundary plate 55 of the Drehverteilers 5 is connected via a spring ring 68 with a rigid pressure ring 69 connected in the bottom one or more seals 70 are inserted. These Seals 70 are replaced by the spring ring 68 against the upper surface of the connection plate 51 is pressed. The spring plate In this way 68 is concerned with the compensation of axial expansion differences, for those in known Afterburners a separate compensator is used.

    Zwischen der Gehäusewand 53 und der zylindrischen Wand 57 des Drehschiebers 5 ist ein Ringraum 72 ausgebildet, der über eine horizontale Leitung 73 mit einem Auslaß 74 für Reingas verbunden ist. Das Reingas wird aus diesem Auslaß 74 mit Hilfe eines nicht dargestellten Gebläses abgesaugt.Between the housing wall 53 and the cylindrical wall 57 of the rotary valve 5, an annular space 72 is formed, the via a horizontal line 73 with an outlet 74 is connected for clean gas. The clean gas is made from this Outlet 74 by means of a blower, not shown aspirated.

    Wie Figur 3 zeigt, ist die obere Begrenzungsplatte 56 des Drehverteilers 5 gedanklich in 11 tortenstückförmige Sektoren eingeteilt, die jeweils einen Winkel von etwa 32,7° einschließen. In einem dieser Sektoren ist, verhältnismäßig nahe am Mittelpunkt der Begrenzungsplatte 56, eine erste Durchtrittsöffnung 75 eingebracht, die geometrisch als Kreisringsegment verstanden werden kann und, wie später deutlich wird, dem Durchlaß von Spülluft dient. Der auf den die Öffnung 75 enthaltenden Sektor folgende Sektor ist frei von Durchtrittsöffnungen. An diesen Sektor schließen sich jedoch drei Sektoren an, die eine zweite, kreisringsegmentförmige Durchtrittsöffnung 76 enthalten. Diese Öffnung 76 dient, wie später deutlich werden wird, dem Durchlaß von zu reinigendem Abgas. Die radial innenliegende Begrenzungslinie der Durchtrittsöffnung 76 weist einen größeren Radius auf als die radial außenliegende Begrenzungslinie der Durchtrittsöffnung 75.As shown in FIG. 3, the upper restricting plate 56 is the rotary distributor 5 mentally in 11 pie-shaped Sectors are divided, each with an angle of about 32.7 °. In one of these sectors is, relatively near the center of the boundary plate 56, a first passage opening 75 introduced, the geometrically can be understood as a circular ring segment and, as will be seen later, the passage of purge air serves. The sector containing the opening 75 following sector is free of passage openings. At However, this sector is followed by three sectors, a second, annular segment-shaped passage opening 76 included. This opening 76 serves as later will be clear, the passage of to be cleaned Exhaust. The radially inner boundary line of Passage opening 76 has a larger radius as the radially outer boundary line of the passage opening 75th

    An den die Durchtrittsöffnung 76 enthaltenden Sektor der oberen Begrenzungsplatte 56 des Drehverteilers 5 schließt sich erneut ein Sektor an, der frei von Durchtrittsöffnungen ist. Diesem Sektor folgen im Uhrzeigersinn vier Sektoren, durch welche sich eine dritte kreisringsegmentförmige Durchtrittsöffnung 77 hindurch erstreckt, die, wie ebenfalls später deutlich wird, der Durchleitung von Reinluft dient. Erneut verläuft die kreisbogenförmige innere Begrenzungslinie der Durchtrittsöffnung 77 in einem größeren Abstand vom Mittelpunkt der oberen Begrenzungsplatte 56 des Drehverteilers 5 als die radial äußere Begrenzungslinie der Durchtrittsöffnung 76. Zwischen dem im Uhrzeigersinn gesehen letzten Sektor, der die Durchtrittsöffnung 77 enthält, und dem die Spülluft-Durchtrittsöffnung 75 enthaltenden Sektor liegt wiederum ein von Durchtrittsöffnungen freier Sektor der oberen Begrenzungsplatte 56.At the passage opening 76 containing sector of upper boundary plate 56 of the rotary distributor 5 closes again a sector, the free of passage openings is. This sector is followed by four sectors in a clockwise direction, through which a third annular segment-shaped Passage opening 77 extends therethrough, which, as also later becomes clear, the passage of clean air serves. Again runs the circular arc-shaped inner Boundary line of the passage opening 77 in one greater distance from the center of the upper boundary plate 56 of the rotary distributor 5 as the radially outer Boundary line of the passage opening 76. Between the seen in the clockwise direction last sector of the passage opening Contains 77, and the scavenging air passage opening 75 sector is in turn one of Passages free sector of the upper boundary plate 56th

    Die Spülluft-Durchtrittsöffnung 75 der oberen Begrenzungsplatte 56 des Drehverteilers 5 kommuniziert mit dem von der Trennwand 59 des Drehverteilers 5 umgebenen Raum 61. Die Durchtrittsöffnung 76 in der oberen Begrenzungsplatte 56 steht mit dem Raum 58 des Drehverteilers 5 in Verbindung. Die Reingas-Durchtrittsöffnung 77 der oberen Begrenzungsplatte 56 schließlich liegt in demjenigen Bereich, der über die zylindrische Wand 57 des Drehverteilers 5 radial übersteht und kommuniziert mit dem Ringraum 72 zwischen dieser Wand 57 und der Gehäusewand 53 und damit mit dem Anschluß 74 für Reingas.The purge air passage opening 75 of the upper boundary plate 56 of the rotary distributor 5 communicates with the surrounded by the partition wall 59 of the rotary distributor 5 Room 61. The passage opening 76 in the upper boundary plate 56 stands with the space 58 of the rotary distributor 5 in connection. The clean gas passage opening 77 of the Upper boundary plate 56 finally lies in the one Area over the cylindrical wall 57 of the rotary distributor 5 projects radially and communicates with the annulus 72 between this wall 57 and the housing wall 53 and so that with the connection 74 for clean gas.

    Wie Figur 2 zeigt, ist der oberhalb des Drehverteilers 5 liegende Verteilraum 6 durch 11 Trennwände 49 in 11 Segmente unterteilt, die also ebenfalls einen Winkel von etwa 32,7° einschließen. Die Trennwände 49 verlaufen in radialer Richtung von einem inneren Rohrstück 78 zur Wand des Gehäuses 2. Die den Verteilraum 6 nach unten abschließende Trennwand 44 enthält in jedem der Sektoren, die einem Segment des Verteilraumes 6 zugeordnet sind, drei Durchtrittsöffnungen 79, 80, 81 in unterschiedlichen radialen Abständen:As Figure 2 shows, that is above the rotary distributor 5 lying distribution space 6 by 11 partitions 49 in 11 Divided segments, so also an angle of about 32.7 °. The partitions 49 extend in the radial direction of an inner pipe section 78 to the wall of the housing 2. The the distribution space 6 after bottom end partition 44 contains in each of Sectors associated with a segment of the distribution space 6 are, three passages 79, 80, 81 in different radial distances:

    Die dem Mittelpunkt der Trennwand 44 am nächsten kommende Durchtrittsöffnung 79 wird radial innen durch das Rohrstück 78 begrenzt und weist eine radial äußere kreisbogenförmige Begrenzungslinie auf, deren Radius gleich dem Radius der äußeren Begrenzungslinie der Spülluft-Durchtrittsöffnung 75 in der oberen Begrenzungsplatte 56 des Drehverteilers 5 ist.The closest to the center of the partition 44 Passage opening 79 is radially inwardly through the pipe section 78 limited and has a radially outer circular arc-shaped Boundary line whose radius is equal to the radius of outer boundary line of the purge air passage opening 75 in the upper boundary plate 56 of the rotary distributor 5 is.

    Die radial außerhalb dieser innersten Durchtrittsöffnung 79 der Trennwand 44 liegende weitere Öffnung 80 von jedem Sektor besitzt eine radial innere Begrenzungslinie, deren Radius mit demjenigen der radial inneren Begrenzungslinie der Durchtrittsöffnung 76 des Drehverteilers 5 und deren radial äußere Begrenzungslinie denselben Radius wie die radial äußere Begrenzungslinie dieser Durchtrittsöffnung 76 aufweist.The radially outside this innermost passage 79 of the partition 44 lying further opening 80 of each Sector has a radially inner boundary line whose Radius with that of the radially inner boundary line the passage opening 76 of the rotary distributor 5 and the radially outer boundary line the same radius as the radially outer boundary line of this passage opening 76 has.

    Die radial am weitesten außenliegende Durchtrittsöffnung 81 in jedem Sektor der Trennwand 44 des Verteilraumes 6 schließlich überdeckt in radialer Richtung denselben Bereich wie die Durchtrittsöffnung 77 in der oberen Begrenzungsplatte 56 des Drehverteilers 5.The radially outermost passage opening 81 in each sector of the partition wall 44 of the distribution space 6 finally covers the same in the radial direction Area such as the passage opening 77 in the upper Boundary plate 56 of the rotary distributor. 5

    In dem in Figur 1 nicht mehr dargestellten Bereich der Nachverbrennungsvorrichtung 1 oberhalb des Verteilraumes 6 befindet sich in bekannter Weise ein Wärmetauscherraum, der entsprechend dem Verteilerraum 6 in 11 Segmente unterteilt ist, die mit dem 11 Segmenten des Verteilraumes 6 über Durchtrittsöffnungen in einer zwischen Verteilraum und Wärmetauscherraum liegenden Trennwand kommunizieren. Oberhalb des Wärmetauscherraumes schließlich befindet sich eine Verbrennungskammer, in der im allgemeinen ein Brenner angeordnet ist.In the not shown in Figure 1 area of the Afterburning device 1 above the distribution space 6 is located in a known manner a heat exchanger room, the corresponding to the distribution space 6 in 11 Segments is divided with the 11 segments of the Verteilraumes 6 via openings in an intermediate Distribution room and heat exchanger room lying partition communicate. Finally, above the heat exchanger room there is a combustion chamber in which in general a burner is arranged.

    Die oben beschriebene thermische Nachverbrennungsvorrichtung arbeitet wie folgt:The thermal afterburning apparatus described above works as follows:

    Die zu reinigenden Abgase werden über den Einlaß 3 und die Einlaßleitung 4 sowie über die Öffnung 50 in der Einlaßleitung 4, die Öffnung 52 in der Anschlußplatte 51 und die unteren Öffnungen 67 im Drehverteiler 5 in den ringförmigen Raum 58 des Drehverteilers 5 gebracht. Von diesem treten die zu reinigenden Abgase über die Durchtrittsöffnung 76 in der oberen Begrenzungsplatte 56 des Drehverteilers 5 in bestimmte Segmente des Verteilraumes 6 ein, und zwar über die Durchtrittsöffnungen 80 in denjenigen Sektoren der Trennwand 44, die gerade mit der Durchtrittsöffnung 76 des Drehverteilers 5 kommunizieren. The exhaust gases to be cleaned through the inlet 3 and the inlet conduit 4 and via the opening 50 in the Inlet line 4, the opening 52 in the connection plate 51st and the lower openings 67 in the rotary distributor 5 in the annular space 58 of the rotary distributor 5 is brought. From this enter the exhaust gases to be cleaned through the passage opening 76 in the upper boundary plate 56 of the Rotary distributor 5 in certain segments of the distribution space 6, via the passage openings 80 in those sectors of the partition 44, which is currently with the Passage opening 76 of the rotary distributor 5 communicate.

    Die Abgase durchqueren daraufhin die entsprechenden Segmente des über dem Verteilraumes 6 liegenden Wärmetauscherraumes und werden dabei in bekannter Weise bis nahe an die Entzündungstemperatur der in den Abgasen enthaltenen Verunreinigungen erhitzt. Die Nachverbrennung dieser Verunreinigungen findet dann in der Verbrennungskammer über dem Wärmetauscherraum statt. Die heißen, nunmehr von Verunreinigungen befreiten Verbrennungsgase (hier kurz "Reingas" genannt) werden durch bestimmte Segmente des Wärmetauscherraumes wieder nach unten geleitet, treten dabei in Wärmeaustausch mit dem zuvor durch aufsteigende Abgase erhitzten Wärmetauschermaterial und kühlen sich dabei ab. Sie gelangen aus dem wärmetauscherraum in die entsprechenden Segmente des Verteilraumes 6. Bei diesen Segmenten handelt es sich um diejenigen, deren radial außenliegende Durchtrittsöffnungen 81 mit der Durchtrittsöffnung 77 im Drehverteiler 5 kommunizieren. Von dort strömen die Reingase in den Ringraum 72 zwischen dem Drehverteiler 5 und der Gehäusewand 53 und von dort über die Leitung 73 und den Reingas-Auslaß 74 aus.The exhaust gases then pass through the corresponding Segments of lying above the distribution chamber 6 heat exchanger space and are doing in a known manner until close to the ignition temperature of the exhaust gases heated impurities heated. The afterburning These contaminants will then be found in the combustion chamber instead of the heat exchanger room. The hot, now freed of impurities combustion gases (here briefly called "clean gas") are determined by certain Segments of the heat exchanger room headed down again, enter into heat exchange with the previously by ascending Exhaust gases heated heat exchanger material and cool off. You get out of the heat exchanger room into the corresponding segments of the distribution space 6. These segments are those their radially outer passage openings 81 with the passage opening 77 in the rotary distributor. 5 communicate. From there the pure gases flow into the Annular space 72 between the rotary distributor 5 and the housing wall 53 and from there via line 73 and the clean gas outlet 74 off.

    Gleichzeitig wird über den Spülluft-Anschluß 66 und die Leitung 65 reine Luft, bei der es sich um einen Teil der erzeugten Reinluft handeln kann, in das Einlaßplenum 64 eingeführt. Diese reine, zu Spülzwecken dienende Luft strömt weiter über die Fenster 63 in den Innenraum der hohlen Nabe 60 des Drehverteilers 5, über die Fenster 62 im oberen Bereich der Nabe 60 in den Durchströmungsraum 61 des Drehverteilers 5 und von dort über die Durchtrittsöffnung 75 in der oberen Begrenzungsplatte 56 des Drehverteilers 5 und die radial am weitesten innenliegende Durchtrittsöffnung 79 des hiermit kommunizierenden Segmentes des Verteilraumes 6 nach oben in ein Segment des Wärmetauscherraumes. Hier sorgt die Spülluft dafür, daß Reste von Abgas, die bei der vorausgegangenen Durchströmung mit Abgas in diesem Segment verblieben sind, in die Verbrennungskammer herausgespült und dort nachverbrannt werden.At the same time via the purge air connection 66 and the Pipe 65 clean air, which is a part the clean air produced can act in the inlet plenum 64 introduced. This pure, serving for flushing air continues to flow through the windows 63 in the interior of the hollow hub 60 of the rotary distributor 5, over the windows 62 in the upper region of the hub 60 in the flow space 61 of the rotary distributor 5 and from there via the passage opening 75 in the upper boundary plate 56 of the rotary distributor 5 and the radially innermost passage opening 79 of the hereby communicating segment of the distribution space 6 upwards into a segment of the heat exchanger space. Here, the scavenging air ensures that leftovers of exhaust gas, which in the previous flow with Exhaust gas remained in this segment, into the combustion chamber be rinsed out and burned there.

    Bei einem nicht näher dargestellten Ausführungsbeispiel erfolgt die Spülluft-Strömung in umgekehrter Richtung: Die spülluft wird dann über den Spülluft-Anschluß 66 abgesaugt.In an embodiment not shown the purge air flow is reversed: The purge air is then via the purge air connection 66th aspirated.

    Die geschlossenen Sektoren in der oberen Begrenzungsplatte 56 des Drehverteilers 5 sorgen in bekannter Weise dafür, daß keine der Durchtrittsöffnungen 79, 80, 81 in der unteren Trennwand 44 des Verteilraumes 6 gleichzeitig mit zwei Durchtrittsöffnungen 75, 76, 77 des Drehverteilers 5 kommunizieren können, wodurch ein die Reinigungsfunktion beeinträchtigender Gas-Bypass hergestellt würde.The closed sectors in the upper boundary plate 56 of the rotary distributor 5 ensure in a known manner for that none of the passage openings 79, 80, 81 in the lower partition 44 of the distribution chamber 6 at the same time with two openings 75, 76, 77 of the rotary distributor 5, which allows the cleaning function impairing gas bypass.

    Claims (5)

    1. A regenerative post-combustion device (1), which comprises from top to bottom in a housing (2):
      a) a combustion chamber;
      b) a heat exchange chamber, which is subdivided into a plurality of segments filled with heat exchanger material;
      c) a distribution chamber (6), which, in accordance with the heat exchange chamber, is subdivided into segments, which are each connected to a segment of the heat exchange chamber;
      d) a rotary distributor (5), which produces, in accordance with its rotary position:
      da) a connection between an inlet (3) for waste gas to be cleaned and at least a first segment of the heat exchange chamber;
      db) a connection between at least a second segment of the heat exchange chamber and an outlet (74) for cleaned gas,
         and which comprises at its top for this purpose at least one waste gas passage opening (76) and, offset angularly thereto, at least one clean gas passage opening (77),
      wherein
      e) the waste gas passage opening (76) and the clean gas passage opening (77) of the rotary distributor (5) are located at different radial distances from the vertical axis of the post-combustion device (1);
      f) the lower partition wall (44) of the distribution chamber (6) comprises in each segment:
      fa) a first passage opening (80) for waste gases, which exhibits the same radial distance from the axis of the post-combustion device (1) as the waste gas passage opening (76) of the rotary distributor (5);
      fb) a second passage opening (81) for clean gas, which exhibits the same radial distance from the axis of the post-combustion device (1) as the clean gas passage opening (77) of the rotary distributor (5),
      characterised in that
      g) the rotary distributor (5) comprises an upper delimiting plate (56), in which are provided the waste gas passage opening (76) and the clean gas passage opening (77) and optionally the purge air passage opening (75), a lower delimiting plate (55), in which there is provided an opening (67) communicating with the inlet (3) for the waste gases to be cleaned, and a partition wall (57), which connects the two delimiting plates (55, 56) together and at least partially defines in the rotary distributor (5) a through-flow chamber (58) for waste gases to be cleaned.
    2. A regenerative post-combustion device according to claim 1, in which, in accordance with its rotary position, the rotary distributor additionally effects connection between a connection for purge air and at least a third segment of the heat exchange chamber and to this end has at its top at least one purge air passage opening, which is angularly offset relative to the waste gas passage opening and relative to the clean gas passage opening,
      characterised in that
      a) the purge air passage opening (75) of the rotary distributor (5) is located at a radial distance from the axis of the post-combustion device (1) which differs from that of the waste gas passage opening (76) and that of the clean gas passage opening (77);
      b) the lower partition wall (44) of the distribution chamber (6) comprises for each segment a passage opening (79) for purge air which exhibits the same radial distance from the axis of the post-combustion device (1) as the purge air passage opening (75) of the rotary distributor (5).
    3. A regenerative post-combustion device according to claim 1 or claim 2, characterised in that the clean gas passage opening (77) is connected in the upper delimiting plate (56) of the rotary distributor (5) via a radially outwardly open area of the rotary distributor (5) to an annular chamber (72), which is in turn connected to the outlet (74) for cleaned gas.
    4. A regenerative post-combustion device according to claim 3, characterised in that the upper delimiting plate (56) of the rotary distributor (5) exhibits a larger radius than a cylindrical wall (57) of the rotary distributor (5), which partially delimits the through-flow chamber (58) for waste gas to be cleaned, and in that the clean gas passage opening (77) in the upper delimiting plate (56) is located in the area thereof which projects beyond the wall (57).
    5. A regenerative post-combustion device according to one of claims 2 to 4, characterised in that the rotary distributor (5) has a hollow hub (60), the inside of which communicates in the vicinity of its lower end with the purge air connection (66) and in the vicinity of its other end with a purge air through-flow chamber (61) of the rotary distributor (5), into which leads the purge air passage opening (75) of the upper delimiting plate (56) of the rotary distributor (5).
    EP00967761A 1999-10-22 2000-09-23 Regenerative post-combustion device Expired - Lifetime EP1144914B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    DK00967761T DK1144914T3 (en) 1999-10-22 2000-09-23 Regenerative post-combustion device

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19950891A DE19950891C2 (en) 1999-10-22 1999-10-22 Regenerative afterburning device
    DE19950891 1999-10-22
    PCT/EP2000/009313 WO2001031256A1 (en) 1999-10-22 2000-09-23 Regenerative post-combustion device

    Publications (2)

    Publication Number Publication Date
    EP1144914A1 EP1144914A1 (en) 2001-10-17
    EP1144914B1 true EP1144914B1 (en) 2005-03-02

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    EP (1) EP1144914B1 (en)
    JP (1) JP2003513221A (en)
    AT (1) ATE290189T1 (en)
    CZ (1) CZ20012238A3 (en)
    DE (2) DE19950891C2 (en)
    PL (1) PL193529B1 (en)
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    Publication number Priority date Publication date Assignee Title
    DE102012023257B4 (en) 2012-11-29 2014-10-09 C-Nox Gmbh & Co. Kg Method and device for thermal afterburning of hydrocarbons containing gases
    FR3037384B1 (en) * 2015-06-11 2017-06-23 Turbomeca TURBOMACHINE HVAC COMBUSTION CHAMBER MODULE COMPRISING A COMBUSTION CHAMBER
    DE102019105283A1 (en) 2019-03-01 2020-09-03 Eisenmann Se Regenerative post-combustion device, coating system and method for coating objects

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    US4126419A (en) * 1974-04-02 1978-11-21 Keichi Katabuchi Combustion device for burning waste gases containing combustible and noxious matters
    US4280416A (en) * 1980-01-17 1981-07-28 Philip Edgerton Rotary valve for a regenerative thermal reactor
    US5016547A (en) * 1990-05-04 1991-05-21 Salem Industries, Inc. Regenerative incinerator
    DE4142136C2 (en) * 1991-12-20 1994-07-21 Eisenmann Kg Maschbau Device for cleaning polluted exhaust air from industrial plants by regenerative post-combustion
    US5562442A (en) * 1994-12-27 1996-10-08 Eisenmann Corporation Regenerative thermal oxidizer
    US5871349A (en) * 1997-10-16 1999-02-16 Smith Engineering Company Rotary valve thermal oxidizer

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    DE19950891C2 (en) 2002-08-14
    PL193529B1 (en) 2007-02-28
    ATE290189T1 (en) 2005-03-15
    EP1144914A1 (en) 2001-10-17
    DE50009645D1 (en) 2005-04-07
    JP2003513221A (en) 2003-04-08
    CZ20012238A3 (en) 2002-03-13
    WO2001031256A1 (en) 2001-05-03
    PL348103A1 (en) 2002-05-06
    DE19950891A1 (en) 2001-04-26

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