EP0350512A1 - Purification process for waste air using thermal or catalytic combustion - Google Patents

Purification process for waste air using thermal or catalytic combustion Download PDF

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Publication number
EP0350512A1
EP0350512A1 EP88110989A EP88110989A EP0350512A1 EP 0350512 A1 EP0350512 A1 EP 0350512A1 EP 88110989 A EP88110989 A EP 88110989A EP 88110989 A EP88110989 A EP 88110989A EP 0350512 A1 EP0350512 A1 EP 0350512A1
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EP
European Patent Office
Prior art keywords
heat exchanger
combustion chamber
boundary wall
pipe
exhaust
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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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Application number
EP88110989A
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German (de)
French (fr)
Inventor
Gerhard Ing.Grad. Anton
Wolfgang W. Ing.grad. Früh
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Fruh Wolfgang W Inggrad
FRUH WOLFGANG W ING GRAD
Original Assignee
Fruh Wolfgang W Inggrad
FRUH WOLFGANG W ING GRAD
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Priority to EP88110989A priority Critical patent/EP0350512A1/en
Publication of EP0350512A1 publication Critical patent/EP0350512A1/en
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0229—Double end plates; Single end plates with hollow spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0236—Header boxes; End plates floating elements

Definitions

  • the invention relates to a method for exhaust air purification by thermal or catalytic combustion of the oxidizable substances in a carrier gas, such as u. is used in the painting technology of automobile construction, offset printing, the coating of metals, the production of mineral wool and textiles, wire painting etc. and essentially consists of a combustion chamber and a heat exchanger.
  • the operation in particular a thermal afterburning plant, is operated with a strongly fluctuating raw gas content and can be problematic, since with a low raw gas filling level a considerable temperature stratification forms within the combustion chamber or across its cross section.
  • the solution to this problem according to the invention provides that the combustion chamber is followed by a heat exchanger in any assignment, that the heat exchanger provides an approximately uniformly symmetrical tube grouping within a closed spatial shape, that any direction of heat flow can be provided between the tubes and the spatial shape formed, that the tubes within the heat exchanger, regardless of the levels of their boundary walls and their guide plates, are only fixed in one plane on the front, rear, center or anywhere between the end regions acting as boundary walls, while the opposite end region (s) ( e) form guides from walls arranged at a small distance, through which the pipes with a sliding fit lead, and that outside the boundary area of the double boundary wall, the gases arriving from the raw gas inlet are taken up by the clear pipe cross-sections and lead via the corresponding cross-sections in the boundary wall to the flame pipe, in order to pass via the afterburning chamber of the closed room shape through the exhaust pipe to be derived.
  • the heat exchanger has a practically uniform distribution of the heat exchanger surfaces in a closed spatial form, it being a criterion of this concept that the tubes used are fixed to a common end wall and in the opposite area by a double boundary wall Guide the formed chamber in the sliding seat.
  • sliding seat is only to be regarded as an adequate designation which, for example, does not correspond to an axial bearing of machine tools.
  • the gases after they have passed through the combustion chamber, are first passed through a defined annular gap and are only introduced into the heat exchanger after this postoxidation has been carried out.
  • An axially displaceable sealing of the bushing through the double boundary wall for example by means of high-quality steel pipes, can also be provided.
  • combustion chamber and heat exchanger can be assigned as desired, as already mentioned, it is also possible to provide that the combustion chamber and the heat exchanger form a unit arranged at an angle to one another or that the combustion chamber and the heat exchanger form a unit in which the heat exchanger essentially concentrically surrounds the combustion chamber.
  • a procedure suitable for this procedure provides that the exhaust gases formed from the oxidizable substances of the raw gas, together with the additional energy supplied via a burner, in the form of a further exhaust gas component, are directed in countercurrent into an annular gap which is arranged concentrically around the flame tube essentially forming the combustion chamber and is delimited by a temperature-resistant part of the casing and then guided in direct current over the room shape and an exhaust pipe, that between the cladding of a ring-shaped room shape and the outer jacket, guide plates are provided as supporting elements for essentially symmetrically distributed pipe groups, the respective clear pipe cross sections of which lead raw gases into the room shape, and that these Room shape is closed by a boundary wall and a double boundary wall.
  • This example provides for the concentric arrangement of a heat exchanger 1 around a combustion chamber 4 formed from the flame tube 4.1, the combustion chamber 4 for returning the gas stream with an annular gap 6 through which the burner 3 flows in counterflow to the flame direction, which is delimited by a temperature-resistant casing 5, is provided, and the gas stream, reduced from the essentially oxidizable substances, is composed of the raw gases and is subjected to a further post-oxidation, and, at the end of this route into one also flows through the outer casing 8 closed form 7 and leaves via the exhaust pipe 11.
  • the - defined somewhat more broadly - by the cladding 5, the outer jacket 8, the front boundary wall 12, the rear double boundary wall 13/14, the spatial shape 7 is crisscrossed by roughly uniformly symmetrical longitudinal tube groups 10 in a relatively dense arrangement.
  • the tubes 10.1 are firmly connected to the front boundary wall 12, while at the other end the tubes 10.1 are guided through the double boundary wall 13/14 forming a chamber in the sliding seat.
  • the tubes 10.1 are carried by radially directed guide plates 9, these plates being offset, alternately connected to the temperature-resistant casing 5 and to the outer jacket 8 in order to obtain a coiled heat-releasing guide within the spatial shape 7.
  • the exhaust gases are fed through the raw gas inlet 2, through the clear pipe cross sections 10.2 of the pipes 10.1 to the combustion chamber 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a purification process for waste air using thermal or catalytic combustion of the oxidisable substances of a carrier gas. A criterion of this invention is that the pipe groupings (10) are only connected to a limiting wall (12) while the pipes (10.1) are guided in the sliding seat through the double limiting wall (13/14), so that their longitudinal expansion is compensated free of stress. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur Abluft­reinigung durch thermische oder katalytische Ver­brennung der oxidierbaren Substanzen in einem Trägergas, wie es u.a. in der Lackiertechnik des Automobilbaues, des Offsetdruckes, der Beschich­tung von Metallen, der Herstellung von Mineral­wollen und Textilien, der Drahtlackierung usw. verwendet wird und im wesentlichen aus einer Brennkammer und einem Wärmeaustauscher besteht.The invention relates to a method for exhaust air purification by thermal or catalytic combustion of the oxidizable substances in a carrier gas, such as u. is used in the painting technology of automobile construction, offset printing, the coating of metals, the production of mineral wool and textiles, wire painting etc. and essentially consists of a combustion chamber and a heat exchanger.

Der Betrieb, insbesondere einer thermischen Nachverbrennungsanlage, wird mit stark schwanken­dem Rohgasanteil betrieben und kann problematisch werden, da bei niedrigem Rohgasfüllgrad sich eine beachtliche Temperaturschichtung innerhalb der Brennkammer bzw. über deren Querschnitt bildet.The operation, in particular a thermal afterburning plant, is operated with a strongly fluctuating raw gas content and can be problematic, since with a low raw gas filling level a considerable temperature stratification forms within the combustion chamber or across its cross section.

Die in diesem Zusammenhang durchgeführten Messungen haben ergeben, daß diese mehr als 200° C betragen können, so daß die entstehenden Unterschiede in der Längenausdehnung über den Brennkammerquerschnitt zur erheblichen Belastung der Gesamtkonstruktion führen können, die sich letztlich im Bruch von Verbindungsstellen zwischen den Festpunkten einer Stirnwand und den Rohren niederschlägt.The measurements carried out in this context have shown that these can be more than 200 ° C, so that the resulting differences in the length across the combustion chamber cross section can lead to considerable stress on the overall construction, which ultimately results in the breakage of connection points between the fixed points of an end wall and knocking down the pipes.

Es ist deshalb aus diesen Lösungen die Lehre zu ziehen,
daß eine einfache Kompensation der unterschied­lichen Differenzlängen der Rohrleitungen zum Ge­häuse für schwankende Volumen nicht geeignet ist.The lesson to be learned from these solutions is
that a simple compensation of the different lengths of the pipes to the housing is not suitable for fluctuating volumes.

Diese Sachlage berücksichtigend ist es Aufgabe dieser Erfindung, ein Verfahren nach der eingangs beschriebenen Art zu nennen, das auch einen schwankenden Volumendurchsatz und die hieraus re­sultierenden Spannungen, bei unterschiedlichen Längendifferenzen, kompensiert.Taking this situation into account, it is the object of this invention to name a method according to the type described at the outset, which also compensates for a fluctuating volume throughput and the resulting stresses, with different length differences.

Die erfindungsgemäße Lösung dieser Aufgabe sieht vor,
daß der Brennkammer in beliebiger Zuordnung ein Wärmeaustauscher nachgeschaltet ist,
daß der Wärmeaustauscher eine etwa gleichmäßig symmetrische Rohrgruppierung innerhalb einer ge­schlossen ausgebildeten Raumform vorsieht,
daß zwischen den Rohren und der gebildeten Raum­form eine beliebige Wärmeströmrichtung vorsehbar ist,
daß die Rohre innerhalb des Wärmeaustauscher, unabhängig von den Ebenen ihrer Begrenzungswände und ihrer Führungsbleche, lediglich in einer Ebene stirnseitig, rückseitig, mittig oder aber an be­liebiger Stelle zwischen den als Begrenzungswände wirksamen Endbereichen fixiert sind, während der oder die gegenüberliegende(n) Endbereich(e) Führungen aus mit geringem Abstand angeordneten Wandungen Kammern bilden, durch die die Rohre mit Schiebesitz führen, und daß außerhalb des Grenzbereiches der doppelten Begrenzungswand die vom Rohgasein­tritt ankommenden Gase durch die lichten Rohr­querschnitte aufgenommen werden und über die korrespondierenden Querschnitte in der Be­grenzungswand zum Flammrohr führen, um über die Nachbrennkammer der geschlossen ausge­bildeten Raumform durch den Abgasstutzen ab­geleitet zu werden.The solution to this problem according to the invention provides
that the combustion chamber is followed by a heat exchanger in any assignment,
that the heat exchanger provides an approximately uniformly symmetrical tube grouping within a closed spatial shape,
that any direction of heat flow can be provided between the tubes and the spatial shape formed,
that the tubes within the heat exchanger, regardless of the levels of their boundary walls and their guide plates, are only fixed in one plane on the front, rear, center or anywhere between the end regions acting as boundary walls, while the opposite end region (s) ( e) form guides from walls arranged at a small distance, through which the pipes with a sliding fit lead, and that outside the boundary area of the double boundary wall, the gases arriving from the raw gas inlet are taken up by the clear pipe cross-sections and lead via the corresponding cross-sections in the boundary wall to the flame pipe, in order to pass via the afterburning chamber of the closed room shape through the exhaust pipe to be derived.

Zusammenfassend muß diesen Hauptmerkmalen der Erfindung nochmals wiederholt werden, daß der Wärmeaustauscher der Brennkammer beliebig nach­schaltbar ist und auch eine beliebige Wärme­stromrichtung zuläßt.In summary, these main features of the invention have to be repeated again that the heat exchanger of the combustion chamber can be connected as desired and also allows any direction of heat flow.

Zu allgemeinen Ausbildung des Wärmeaustauschers wird bemerkt, daß dieser in einer geschlossen ausgebildeten Raumform eine praktisch gleich­mäßige Verteilung der Wärmeaustauscherflächen aufweist, wobei es Kriterium dieser Konzeption ist, daß die verwendeten Rohre an einer gemein­samen Stirnwand fixiert sind und in dem ge­genüberliegenden Bereich diese durch eine doppelte Begrenzungswand gebildete Kammer im Schiebesitz führen.Regarding the general design of the heat exchanger, it is noted that it has a practically uniform distribution of the heat exchanger surfaces in a closed spatial form, it being a criterion of this concept that the tubes used are fixed to a common end wall and in the opposite area by a double boundary wall Guide the formed chamber in the sliding seat.

Der Begriff "Schiebesitz" ist aufgrund der thermischen Beanspruchungen lediglich als eine adäquate Bezeichnung zu betrachten, die beispielsweise nicht mit einer Axiallagerung von Werkzeugmaschinen korrespondiert.Due to the thermal stresses, the term "sliding seat" is only to be regarded as an adequate designation which, for example, does not correspond to an axial bearing of machine tools.

Es ist vorgesehen, daß die Gase nach ihrem Durchtritt durch die Brennkammer zunächst durch einen abgegrenzten Ringspalt geleitet werden und erst nach Vollzug dieser Nachoxidation in den Wärmeaustauscher eingeführt werden.It is envisaged that the gases, after they have passed through the combustion chamber, are first passed through a defined annular gap and are only introduced into the heat exchanger after this postoxidation has been carried out.

Weiterhin wird vorgeschlagen, daß entstehende Leckagen im Bereich der Rohrführung durch die doppelte Begrenzungswand entweder durch Absaugung des Leckage-Stromes und Rückführung desselben zum Rohgaseintritt oder durch Spülung des Zwischen­raumes mit einem Sperrmedium, z.B. Luft, beseitigt werden.It is also proposed that leaks in the area of the pipe routing through the double boundary wall either by suctioning off the leakage flow and returning it to the raw gas inlet or by flushing the intermediate space with a barrier medium, e.g. Air to be eliminated.

Auch eine axial verschiebbare Abdichtung der Durchführung durch die doppelte Begrenzungswand, beispielsweise mittels hochwertiger Stahlrohre, kann vorgesehen werden.An axially displaceable sealing of the bushing through the double boundary wall, for example by means of high-quality steel pipes, can also be provided.

Abgesehen davon, daß die Zuordnung von Brenn­kammer und Wärmeaustauscher, wie bereits erwähnt, beliebig erfolgen kann, ist auch vorsehbar, daß die Brennkammer und der Wärmeaustauscher eine winklig zueinander angeordnete Einheit bilden oder daß die Brennkammer und der Wärme­austauscher eine Einheit bilden, bei der der Wärmeaustauscher im wesentlichen konzentrisch die Brennkammer umfaßt.In addition to the fact that the combustion chamber and heat exchanger can be assigned as desired, as already mentioned, it is also possible to provide that the combustion chamber and the heat exchanger form a unit arranged at an angle to one another or that the combustion chamber and the heat exchanger form a unit in which the heat exchanger essentially concentrically surrounds the combustion chamber.

Eine für diese Verfahrensweise geeignete Durch­führung sieht vor,
daß die aus den oxidierbaren Substanzen des Rohgases entstehenden Abgase gemeinsam mit der über einen Brenner zugeführten Zusatzenergie, in Form eines weiteren Abgasanteiles, in eine konzentrisch um das im wesentlichen die Brenn­kammer bildende Flammrohr angeordnete, durch einen temperaturfesten Teil der Umkleidung ab­gegrenzten Ringspalt im Gegenstrom geleitet werden und dann im Gleichstrom über die Raum­form und einen Abgasstutzen geführt werden, daß zwischen der Umkleidung einer ringförmig ausgebildeten Raumform und dem Außenmantel Führungsbleche als Tragelemente für im wesent­lichen symmetrisch verteilte Rohrgruppierungen vorgesehen sind, deren jeweils lichte Rohrquer­schnitte din Rohgase in die Raumform führen, und daß diese Raumform durch eine Begrenzungswand und eine doppelte Begrenzungswand geschlossen ist.A procedure suitable for this procedure provides
that the exhaust gases formed from the oxidizable substances of the raw gas, together with the additional energy supplied via a burner, in the form of a further exhaust gas component, are directed in countercurrent into an annular gap which is arranged concentrically around the flame tube essentially forming the combustion chamber and is delimited by a temperature-resistant part of the casing and then guided in direct current over the room shape and an exhaust pipe, that between the cladding of a ring-shaped room shape and the outer jacket, guide plates are provided as supporting elements for essentially symmetrically distributed pipe groups, the respective clear pipe cross sections of which lead raw gases into the room shape, and that these Room shape is closed by a boundary wall and a double boundary wall.

Das erfindungsgemäße Verfahren zur Abluftreini­gung durch Verbrennung der oxidierbaren Substanzen eines Trägergases wird durch das beigefügte Schema beispielsweise näher erläutert.

  • Figur 1 zeigt die Zuführung der Rohgase über den Rohgaseintritt 2 zu den Rohr­gruppierungen 10, und zwar durch die doppelte Begrenzungswand 13/14.
  • Figur 2 zeigt dasselbe System, jedoch werden hier die Rohgase zunächst durch die abge­schlossene Raumform 7 und von dort zur Brennkammer 4 geführt, während die Rückführung über die vordere Begrenzungswand durch die doppelte Begrenzungwand 13/14 und über den Abgasstutzen 11 erfolgt.
The method according to the invention for exhaust air purification by burning the oxidizable substances of a carrier gas is explained in more detail, for example, by the attached scheme.
  • FIG. 1 shows the supply of the raw gases via the raw gas inlet 2 to the pipe groups 10, namely through the double boundary wall 13/14.
  • FIG. 2 shows the same system, but here the raw gases are first led through the closed spatial form 7 and from there to the combustion chamber 4, while the return takes place via the front boundary wall through the double boundary wall 13/14 and via the exhaust pipe 11.

Dieses Beispiel sieht die konzentrische Anord­nung eines Wärmeaustauschers 1 um eine aus dem Flammrohr 4.1 gebildeten Brennkammer 4 vor, wo­bei die Brennkammer 4 zur Rückführung des Gas­stromes mit einer im Gegenstrom zur Flammrich­tung des Brenners 3 durchströmten Ringspalt 6,
der durch eine temperaturfeste Umkleidung 5 abgegrenzt ist, versehen ist, und sich der Gasstrom, reduziert von den im wesentlichen oxidierbaren Substanzen, aus den Rohgasen zu­sammesetzt und einer weiteren Nachoxidation unter­zogen wird, und, am Ende dieser Strecke in eine ebenfalls durch Außenmantel 8 geschlossene Raumform 7 einströmt und diese über den Ab­gasstutzen 11 verläßt.This example provides for the concentric arrangement of a heat exchanger 1 around a combustion chamber 4 formed from the flame tube 4.1, the combustion chamber 4 for returning the gas stream with an annular gap 6 through which the burner 3 flows in counterflow to the flame direction,
which is delimited by a temperature-resistant casing 5, is provided, and the gas stream, reduced from the essentially oxidizable substances, is composed of the raw gases and is subjected to a further post-oxidation, and, at the end of this route into one also flows through the outer casing 8 closed form 7 and leaves via the exhaust pipe 11.

Die - etwas breiter definiert - durch die Um­kleidung 5 den Außenmantel 8, die vordere Begrenzungswand 12, die rückwärtige doppelte Begrenzungswand 13/14 abgeschlossene Raumform 7 ist durch etwa gleichmäßig symmetrisch in Längs­richtung verlaufende Rohrgruppierungen 10 in relativ dichter Anordnung durchzogen.The - defined somewhat more broadly - by the cladding 5, the outer jacket 8, the front boundary wall 12, the rear double boundary wall 13/14, the spatial shape 7 is crisscrossed by roughly uniformly symmetrical longitudinal tube groups 10 in a relatively dense arrangement.

Die Rohre 10.1 sind mit der vorderen Begrenzungs­wand 12 fest verbunden, während andernends die Rohre 10.1 durch die doppelte, eine Kammer bilden­de Begrenzungswand 13/14 im Schiebesitz geführt sind.The tubes 10.1 are firmly connected to the front boundary wall 12, while at the other end the tubes 10.1 are guided through the double boundary wall 13/14 forming a chamber in the sliding seat.

Die Rohre 10.1 werden durch radial gerichtete Führungsbleche 9 getragen, wobei diese Bleche versetzt, wechselnd mit der temperaturfesten Um­kleidung 5 und mit dem Außenmantel 8 verbunden sind, um eine gewendelte wärmeabgebende Führung innerhalb der Raumform 7 zu erhalten.The tubes 10.1 are carried by radially directed guide plates 9, these plates being offset, alternately connected to the temperature-resistant casing 5 and to the outer jacket 8 in order to obtain a coiled heat-releasing guide within the spatial shape 7.

Da die Temperaturschichtungen innerhalb der Brenn­kammer 4 bei niedrigem Volumen mehr als 200° C betragen können, besteht die Gefahr, daß sich stark unterschiedliche Längendehnungen der Rohre 10.1 einstellen und zur Zerstörung von Festverbindungen mit der doppelten Begrenzungswand 13/14 führen.Since the temperature stratifications within the combustion chamber 4 can be more than 200 ° C. at a low volume, there is a risk of that very different elongations of the pipes 10.1 occur and lead to the destruction of fixed connections with the double boundary wall 13/14.

Aus diesem Grunde wurde die Schiebesitzverbindung gewählt, die im Bereich der denkbaren Ausdehnungs­grenzen jede verschiedene Länge der Rohre 10.1 kompensiert.For this reason, the sliding seat connection was chosen, which compensates for every different length of the pipes 10.1 in the range of the possible expansion limits.

Die Beschickung der Abgase führt über den Rohgas­eintritt 2, über die lichten Rohrquerschnitte 10.2 der Rohre 10.1 zur Brennkammer 4.The exhaust gases are fed through the raw gas inlet 2, through the clear pipe cross sections 10.2 of the pipes 10.1 to the combustion chamber 4.

Die vorgenannte Beschreibung richtet sich im einzelnen nach Figur 1.The above description is based in detail on FIG. 1.

Claims (22)

1. Verfahren zur Abluftreinigung durch thermische oder katalytische Verbrennung der oxidierbaren. Substanzen in einem Trägergas, wie es u.a. in der Lackiertechnik des Automobilbaues, des Offset­druckes, der Beschichtung von Metallen, der Her­stellung von Mineralwollen und Textilien, der Drahtlackierung usw. verwendet wird und im wesent­lichen aus einer Brennkammer (4) und einem Wärme­austauscher (1) besteht, dadurch gekennzeichnet,
daß der Brennkammer (4) in beliebiger Zuord­nung ein Wärmeaustauscher (1) nachgeschaltet ist,
daB der Wärmeaustauscher (1) eine etwa gleich­mäßig symmetrische Rohrgruppierung (10) innerhalb einer geschlossen ausgebildeten Raumform (7) vor­sieht,
daß zwischen den Rohren (10.1) und der ge­bildeten Raumform (7) eine beliebige Wärmeström­richtung vorsehbar ist,
daß die Rohre (10.1) innerhalb des Wärme­austauschers (1), unabhängig von den Ebenen ihrer Begrenzungswände (12 bzw. 13/14) und ihrer Führungsbleche (9), lediglich in einer Ebene stirnseitig, rückseitig, mittig oder aber an beliebiger Stelle zwischen den als Begrenzungs­wände wirksamen Endbereichen (12 und 13/14) fixiert sind, während der oder die gegenüberlie­gende(n) Endbereich(e) Führungen aus mit ge­ringem Abstand angeordneten Wandungen Kammern bilden, durch die die Rohre (10.1) mit Schiebe­sitz führen, und
daßaußerhalb des Grenzbereiches der doppelten Begrenzungswand (13/14) die vom Rohgaseintritt (2) ankommenden Gase durch die lichten Rohrquer­schnitte (10.2) aufgenommen werden und über die korrespondierenden Querschnitte in der Begrenzungs­wand (12) zum Flammrohr (4.1) führen, um über den Ringspalt (6), der geschlossen ausgebildeten Raumform (7) durch den Abgasstutzen (11) abge­leitet zu werden.1. Process for exhaust air purification by thermal or catalytic combustion of the oxidizable. Substances in a carrier gas, such as those used in the painting technology of automobile construction, offset printing, the coating of metals, the production of mineral wool and textiles, wire painting, etc. and essentially consisting of a combustion chamber (4) and a heat exchanger (1) consists, characterized,
that the combustion chamber (4) is followed by a heat exchanger (1) in any assignment,
that the heat exchanger (1) provides an approximately uniformly symmetrical tube grouping (10) within a closed spatial shape (7),
that any direction of heat flow can be provided between the tubes (10.1) and the spatial shape (7) formed,
that the tubes (10.1) within the heat exchanger (1), regardless of the levels of their boundary walls (12 or 13/14) and their guide plates (9), only in one plane on the front, rear, center or at any point between the end regions (12 and 13/14) which act as boundary walls are fixed, while the opposite end region (s) form guides from walls which are arranged at a short distance and through which the pipes (10.1) lead with a sliding fit, and
that outside the border area of the double boundary wall (13/14) the gases arriving from the raw gas inlet (2) are taken up by the clear pipe cross sections (10.2) and lead via the corresponding cross sections in the boundary wall (12) to the flame pipe (4.1) in order to Annular gap (6), the closed spatial shape (7) to be derived through the exhaust pipe (11). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet,
daß entstehende Leckagen im Bereich der Rohr­führung durch die doppelte Begrenzungswand (13/14) entweder durch Absaugung des Leckage-Stromes und Rückführung desselben zum Rohgaseintritt (2) oder durch Spülung des Zwischenraumes mit einem Sperrmedium, z.B. Luft, beseitigt werden.2. The method according to claim 1, characterized in that
that leaks in the area of the pipe routing through the double boundary wall (13/14) either by sucking off the leakage current and returning it to the raw gas inlet (2) or by flushing the intermediate space with a barrier medium, for example air. 3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet,
daß die Brennkammer (4) und der Wärmeaus­tauscher (1) eine winklig zueinander angeord­nete Einheit bilden.3. The method according to claim 1, characterized in
that the combustion chamber (4) and the heat exchanger (1) form an angularly arranged unit. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet,
daß die Brennkammer (4) und der Wärmeaus­tauscher (1) eine Einheit bilden, bei der der Wärmeaustauscher (1) im wesentlichen konzentrisch die Brennkammer (4) umfaßt.4. The method according to claim 1, characterized in
that the combustion chamber (4) and the heat exchanger (1) form a unit in which the heat exchanger (1) comprises the combustion chamber (4) essentially concentrically. 5. Verfahren nach Anspruch 1,2 und 4, dadurch ge­kennzeichnet,
daß die aus den oxidierbaren Substanzen des Rohgases (2) entstehenden Abgase gemeinsam mit der über einen Brenner (3) zugeführten Zusatz­energie, in Form eines weiteren Abgasanteiles (2.1) in eine konzentrisch um das im wesent­lichen die Brennkammer (4) bildende Flammrohr (4.1) angeordnete, durch einen temperaturfesten Teil der Um­kleidung (5) abgegrenzten Ringspalt (6) im Gegenstrom geleitet werden und dann im Gleichstrom über die Raumform (7) und einen Abgasstutzen (8) geführt werden,
daß zwischen der Umkleidung (5) einer ring­förmig ausgebildeten Raumform (7) und dem Außenmantel (8), Führungsbleche (9) als Trag­elemente für im wesentlichen symmetrisch ver­teilte Rohrgruppierungen (10) vorgesehen sind, deren jeweils lichte Rohrquerschnitte (10.2) die Rohgase in die Raumform (7) führen, und
daß diese Raumform (7) durch eine Begrenzungs­wand (12) und eine doppelte Begrenzungswand (13/14) geschlossen ist.5. The method according to claim 1,2 and 4, characterized in
that the exhaust gases formed from the oxidizable substances of the raw gas (2) together with the additional energy supplied via a burner (3), in the form of a further exhaust gas portion (2.1), into a flame tube (4.1) concentrically around the combustion chamber (4) arranged, through a temperature-resistant part of the casing (5) delimited annular gap (6) in countercurrent and then passed in cocurrent over the room shape (7) and an exhaust pipe (8),
that between the cladding (5) of an annular spatial shape (7) and the outer jacket (8), guide plates (9) are provided as supporting elements for essentially symmetrically distributed pipe groups (10), the respective clear pipe cross sections (10.2) of the raw gases in the Lead spatial form (7), and
that this spatial shape (7) is closed by a boundary wall (12) and a double boundary wall (13/14). 1 Wärmeaustauscher1 heat exchanger 2 Rohgaseintritt2 Raw gas entry 2.1 Abgasanteil des Brenners2.1 Burner exhaust gas content 3 Brenner3 burners 4 Brennkammer4 combustion chamber 4.1 Flammrohr4.1 Flame tube 5 temperaturfeste Umkleidung5 temperature-resistant casing 6 Ringspalt6 annular gap 7 Raumform7 spatial form 8 Außenmantel8 outer jacket 9 Führungsbleche9 guide plates 10 Rohrgruppierungen10 tube groups 10.1 Rohr10.1 pipe 10.2 lichte Rohrquerschnitte10.2 clear pipe cross sections 11 Abgasstutzen11 Exhaust nozzle 12 Begrenzungswand12 boundary wall 13 und 14 doppelte Begrenzungswand13 and 14 double boundary wall
EP88110989A 1988-07-09 1988-07-09 Purification process for waste air using thermal or catalytic combustion Withdrawn EP0350512A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP88110989A EP0350512A1 (en) 1988-07-09 1988-07-09 Purification process for waste air using thermal or catalytic combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88110989A EP0350512A1 (en) 1988-07-09 1988-07-09 Purification process for waste air using thermal or catalytic combustion

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EP0350512A1 true EP0350512A1 (en) 1990-01-17

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446434A2 (en) * 1990-03-10 1991-09-18 H KRANTZ-TKT GmbH Combustion device
EP0560678A1 (en) * 1992-03-10 1993-09-15 Dumoutier Et Massetat Apparatus for purifying gaseous effluents
GB2397874A (en) * 2002-11-14 2004-08-04 Edwin Robinson Indirect heater with gas recirculation
DE102010012006A1 (en) * 2010-03-15 2011-09-15 Dürr Systems GmbH Heat exchanger for thermal exhaust air cleaning system, has heat exchanger pipe, whose inner space is flow-throughable by inner fluid medium, where wall of heat exchanger pipe has turbulence-generating structure at its inner side
DE102013203448A1 (en) * 2013-02-28 2014-08-28 Dürr Systems GmbH Plant and method for treating and / or utilizing gaseous medium
CN111998369A (en) * 2020-08-25 2020-11-27 绍兴众特机械制造有限公司 Integrated catalytic furnace with sufficient reaction
CN112344355A (en) * 2020-11-11 2021-02-09 山东天智信息科技有限公司 Catalytic combustion device for industrial waste gas treatment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021111A2 (en) * 1979-06-18 1981-01-07 KRW Energy Systems Inc. High temperature heat exchanger
DE3043286A1 (en) * 1980-04-14 1981-10-22 Katec, Katalytische Lufttechnik Betz Gmbh & Co, 6467 Hasselroth Waste gas noxious substances burner - has axially-adjustable ring baffle on burner-projection entering into mixing zone inlet
DE3107664A1 (en) * 1981-02-28 1982-09-16 Kraftanlagen Ag, 6900 Heidelberg Installation for post-combustion of organic constituents of process waste gases
GB2153985A (en) * 1984-02-03 1985-08-29 Flakt Limited Apparatus for burning pollutants carried by exhaust gases

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021111A2 (en) * 1979-06-18 1981-01-07 KRW Energy Systems Inc. High temperature heat exchanger
DE3043286A1 (en) * 1980-04-14 1981-10-22 Katec, Katalytische Lufttechnik Betz Gmbh & Co, 6467 Hasselroth Waste gas noxious substances burner - has axially-adjustable ring baffle on burner-projection entering into mixing zone inlet
DE3107664A1 (en) * 1981-02-28 1982-09-16 Kraftanlagen Ag, 6900 Heidelberg Installation for post-combustion of organic constituents of process waste gases
GB2153985A (en) * 1984-02-03 1985-08-29 Flakt Limited Apparatus for burning pollutants carried by exhaust gases

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446434A2 (en) * 1990-03-10 1991-09-18 H KRANTZ-TKT GmbH Combustion device
EP0446434A3 (en) * 1990-03-10 1992-03-11 H. Krantz Gmbh & Co. Combustion device
EP0560678A1 (en) * 1992-03-10 1993-09-15 Dumoutier Et Massetat Apparatus for purifying gaseous effluents
FR2688577A1 (en) * 1992-03-10 1993-09-17 Dumoutier Massetat Sa DEVICE FOR PURIFYING GASEOUS EFFLUENTS.
GB2397874A (en) * 2002-11-14 2004-08-04 Edwin Robinson Indirect heater with gas recirculation
GB2397874B (en) * 2002-11-14 2005-03-30 Edwin Robinson An indirect fired process heater
DE102010012006A1 (en) * 2010-03-15 2011-09-15 Dürr Systems GmbH Heat exchanger for thermal exhaust air cleaning system, has heat exchanger pipe, whose inner space is flow-throughable by inner fluid medium, where wall of heat exchanger pipe has turbulence-generating structure at its inner side
DE102013203448A1 (en) * 2013-02-28 2014-08-28 Dürr Systems GmbH Plant and method for treating and / or utilizing gaseous medium
US10151488B2 (en) 2013-02-28 2018-12-11 Dürr Systems GmbH Apparatus and methods for treating and/or utilizing a gaseous medium
CN111998369A (en) * 2020-08-25 2020-11-27 绍兴众特机械制造有限公司 Integrated catalytic furnace with sufficient reaction
CN112344355A (en) * 2020-11-11 2021-02-09 山东天智信息科技有限公司 Catalytic combustion device for industrial waste gas treatment

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