EP1258677B1 - Apparatus for cleaning exhaust gases from industrial processes - Google Patents
Apparatus for cleaning exhaust gases from industrial processes Download PDFInfo
- Publication number
- EP1258677B1 EP1258677B1 EP02009627A EP02009627A EP1258677B1 EP 1258677 B1 EP1258677 B1 EP 1258677B1 EP 02009627 A EP02009627 A EP 02009627A EP 02009627 A EP02009627 A EP 02009627A EP 1258677 B1 EP1258677 B1 EP 1258677B1
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- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- cleaned
- gas
- heat exchanger
- housing
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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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- 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
Definitions
- the invention relates to a device for cleaning Exhaust gases from industrial processes, in particular a thermal post-combustion device, with a combustion chamber, in which the exhaust gas to be cleaned is burned, and a heat exchanger in which the exhaust gas to be cleaned is preheated, the heat exchanger facilities for the helical guidance of the exhaust gas to be cleaned having the combustion chamber.
- Thermal afterburners are in one Variety of applications, for example in the extraction of exhaust gases from paint shops, used.
- Purification of the exhaust gas of pollutants contained therein the exhaust gas is passed through a combustion chamber and the contained pollutants are burned. It is also known that the exhaust gas supplied to the combustion preheat in a heat exchanger beforehand.
- Such Device is for example from DE 199 10 687 A1 known.
- a device of the aforementioned Art is known for example from US 3,311,456.
- a another device for purifying exhaust gases is in the DE 693 00 289 T2.
- the purified exhaust gas Bends helically around the combustion chamber via baffles guided around, so that the hot clean gas helical on the pipes running parallel to the combustion chamber meets.
- the invention is based on the object, a device to create the type mentioned in the Use is particularly economical.
- a device for Purification of exhaust gases from industrial processes with a combustion chamber and a heat exchanger in the heat exchanger Facilities for helical guidance of the cleaning exhaust gas are provided around the combustion chamber.
- the exhaust gas to be cleaned becomes special well distributed to all outer areas of the combustion chamber and has a particularly high length of stay in this area, so that the exhaust gas to be cleaned is particularly good can be preheated and heated and that way the cleaning process is done very well and economically.
- such a device is for spiral Leadership easy and inexpensive to produce.
- the heat exchanger is preferably designed so that the exhaust to be cleaned between the combustion chamber and a the combustion chamber enclosing housing is guided.
- both the combustion chamber and the housing surrounding the combustion chamber is cylindrical. That's the way to go To achieve flow conditions of the exhaust gases to be cleaned.
- a coil provided between the Combustion chamber and the combustion chamber enclosing housing is arranged and essentially of a strip of material, preferably of the same material as the remaining parts of the device, in particular of stainless steel, is formed.
- the device a device for recycling the hot clean gases on.
- the device for recycling the hot clean gas preferably has a Combustion chamber surrounding guide housing. The helix for helical guidance of the exhaust gases to be cleaned the combustion chamber is then preferred between this guide housing and the outer, the combustion chamber enclosing Housing arranged.
- the heat exchanger In the heat exchanger according to the invention is an additional Device for carrying out the hot clean gas provided by the exhaust gas to be cleaned. Especially is thereby returned by the guide housing hot clean gas then again through that too cleaning exhaust gas performed.
- This device is designed so spirally that they in opposite directions to the spiral leadership of the is aligned with cleaning exhaust gases. Opposite is here to understand in the sense of the direction of rotation, so that the again and again intersect, in particular at an angle of about 90 °.
- the device for carrying out the hot clean gas through the gas to be purified has in a preferred Embodiment a plurality of heat exchanger tubes or pipes, wherein in the coils to the heat exchanger hoses adapted passages are provided, so that the heat exchanger hoses also in the opposite direction to the Device for the spiral guidance of the to be cleaned Exhaust gases are feasible around the combustion chamber.
- a flow rectifier intended in the exit region of the combustion chamber. This will make a uniform Distribution of emerging from the combustion chamber guaranteed hot gases.
- a bypass opening is additionally provided, which is conveniently controllable, so that in Case of overpressure or too high a temperature from the combustion chamber coming hot gas can be derived to the outside is.
- a catalyst is provided in the exit region of the combustion chamber.
- the catalyst is preferably from a multiplicity of individual catalysts formed, through which the hot gas must flow.
- the plurality of catalysts in the inlet region the device for the return of the hot Clean gas arranged.
- Fig. 1 is a device 1 for the purification of exhaust gases represented by industrial processes.
- the device 1 has an outer cylindrical housing 14 in which a combustion chamber 7 is centrally arranged, which is also cylindrical.
- the combustion chamber 7 has a burner 4 in the left end region, wherein 6 supplied fuel through a central supply line becomes.
- an inlet nozzle 21 is arranged, through which Raw gas can enter and then in the outer area of the Device along the trained as a helix 15 Device for helical guidance several times around the Combustion chamber 7 is guided around, then in the area of Burner 4 enters the combustion chamber 7 and there is burned.
- In the right end of the combustion chamber. 7 are arranged flow rectifier 8, through which the flow through burned gases.
- Behind is one Bypass flap 13 is arranged, which is usually in the operating state closed is. Furthermore, behind the Flow rectifier 8 a catalyst 9 and a Plurality of catalysts 9 in the entrance area to a arranged the combustion chamber 7 enclosing annular gap 10, through which the hot combustion air passes.
- a guide housing 16 Around the combustion chamber 7 is arranged a guide housing 16, being between this guide housing 16 and the Combustion chamber 7 of said annular gap 10 is located through the hot air along the combustion chamber 7 in the direction of the burner 4 is passed, there at the end of the annular gap 10 directed into a front reversible collection chamber 11 is and from there in the heat exchanger tubes 17 trained device to carry out the hot Clean gas is passed through the exhaust gas to be cleaned.
- heat exchanger tubes 17 are also spiral passed around the combustion chamber, these being opposite led to the helix 15 around the combustion chamber 7 are.
- total 36 heat exchanger tubes 17 are provided, which are parallel to each other.
- the heat exchanger tubes 17 are to the outlet shown on the right in Figure 1 12 led, where the generated clean gas ultimately exit.
- Fig. 2 is a cross-sectional view taken along the line A-A shown in Fig. 1. This is from outside to inside Housing 14 and then to recognize the guide housing 16. Between the housing 14 and guide housing 16 is through led the inlet nozzle 21 supplied exhaust. Within of the guide housing 16, the combustion chamber 7 is positioned, being between the combustion chamber 7 and guide housing 16, the annular gap 10 is formed by the the hot clean gas is returned. In the entrance area of the annular gap 10, a total of 12 openings are provided, in which catalysts 9 are arranged through which flow through the coming from the combustion chamber 7 hot gas got to. Central is in the cross-sectional view also to recognize the bypass flap 13, in the end the combustion chamber 7 is arranged.
- Fig. 3 is a side view of the invention Device 1 with a transparent housing shown 14 is shown. Inside the housing 14 is the Detecting guide housing 16 to the device for the helical guidance of the exhaust gas to be cleaned the combustion chamber is designed in the form of a helix 15, so that the exhaust gas or raw gas to be cleaned in the direction the arrows 20 parallel to the helix 15 in a spiral around the combustion chamber 7 to the entrance of the combustion chamber 7 is guided in the region of the burner 4. Furthermore is of the plurality of heat exchanger tubes by way of example a heat exchanger tube 17 is shown. These are lost also spirally around the combustion chamber or to the Guide housing 16 and meet again on the Coil 15, wherein in the coil 15 to the heat exchanger hoses 17 adapted passages 18 are provided are. The exiting clean gas flows in the direction of Arrows 22.
- FIG. 4 is a perspective view of the coil 15th illustrated in which the plurality of passages 18 for the plurality of heat exchanger tubes 17 are provided is.
- the exhaust gas or raw gas to be purified occurs through the inlet port 21 in the device 1 a.
- the exhaust gas to be cleaned is then distributed in the front Distribution chamber 2 and then flows through the heat exchanger 3, in particular along the spiral around the Combustion chamber 7 leading coil 15.
- Due to the forced operation of Spiral 15 remains the incoming raw gas or exhaust gas comparatively long in the heat exchanger 3 and has there to travel a long way. The way depends on the Number of turns of the helix.
- the exhaust gas is circulated around the combustion chamber three times led around.
- the preheated in this way Exhaust gas enters the combustion chamber 7 in the region 5 and serves as combustion air for the by the Feed 6 carried fuel and is there from Burned the burner 4.
- a temperature controller holds the Reaction temperature in the combustion chamber 7 by means of a Fuel quantity controller constant.
- the hot, on this Pre-purified gases flow in the combustion chamber 7 in Arrow direction through the flow straightener 8 and distribute evenly over the entire combustion chamber cross-section.
- the hot, pre-cleaned gases flow through then the catalyst 9, preferably as a platinum catalyst is formed with surrounding ceramic fibers, and react with the excess residual oxygen and the remaining pollutants.
- the gases thus purified flow through the annular gap 10 in the front turn collection chamber 11 and distributed in the heat exchanger tubes 17th
- the heat exchanger tubes 17 are helical or spiral with reversed sense of direction as the Spiral 15 performed around the combustion chamber 7 and lead the cleaned gas to the outlet nozzle 12.
- the at the end of Combustion chamber 7 arranged bypass flap 13 is normal closed and gives in an emergency, for example an inadmissibly high temperature, the purified gas directly in the outlet 12. This way is in the Emergency bypassed the heat exchanger 3, so that then the Temperature in the combustion chamber 7 drops and the overtemperature is lowered.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Incineration Of Waste (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Reinigung von Abgasen aus industriellen Prozessen, insbesondere eine thermische Nachverbrennungsvorrichtung, mit einer Brennkammer, in der das zu reinigende Abgas verbrannt wird, und einem Wärmetauscher, in dem das zu reinigende Abgas vorgewärmt wird, wobei der Wärmetauscher Einrichtungen zur spiralförmigen Führung des zu reinigenden Abgases um die Brennkammer aufweist.The invention relates to a device for cleaning Exhaust gases from industrial processes, in particular a thermal post-combustion device, with a combustion chamber, in which the exhaust gas to be cleaned is burned, and a heat exchanger in which the exhaust gas to be cleaned is preheated, the heat exchanger facilities for the helical guidance of the exhaust gas to be cleaned having the combustion chamber.
Thermische Nachverbrennungsvorrichtungen werden in einer Vielzahl von Anwendungen, beispielsweise bei der Absaugung von Abgasen von Lackieranlagen, eingesetzt. Zur Reinigung des Abgases von darin enthaltenen Schadstoffen wird das Abgas durch eine Brennkammer geführt und die darin enthaltenen Schadstoffe werden verbrannt. Dabei ist es auch bekannt, das der Verbrennung zugeführte Abgas vorher in einem Wärmetauscher vorzuerwärmen. Eine derartige Vorrichtung ist beispielsweise aus der DE 199 10 687 A1 bekannt. Eine Vorrichtung der eingangs genannten Art ist beispielsweise aus der US 3,311,456 bekannt. Eine andere Vorrichtung zur Reinigung von Abgasen wird in der DE 693 00 289 T2 beschrieben. Hier wird das zu reinigende Abgas durch parallel zur Brennkammer ausgerichtete Rohre an der Brennkammer entlang geführt. Das gereinigte Abgas wird über Ablenkplatten schraubenförmig um die Brennkammer herumgeführt, so daß das heiße Reingas schraubenförmig auf die parallel zur Brennkammer laufenden Rohre trifft.Thermal afterburners are in one Variety of applications, for example in the extraction of exhaust gases from paint shops, used. to Purification of the exhaust gas of pollutants contained therein the exhaust gas is passed through a combustion chamber and the contained pollutants are burned. It is It is also known that the exhaust gas supplied to the combustion preheat in a heat exchanger beforehand. Such Device is for example from DE 199 10 687 A1 known. A device of the aforementioned Art is known for example from US 3,311,456. A another device for purifying exhaust gases is in the DE 693 00 289 T2. Here is the to be cleaned Exhaust gas through pipes aligned parallel to the combustion chamber guided along the combustion chamber along. The purified exhaust gas Bends helically around the combustion chamber via baffles guided around, so that the hot clean gas helical on the pipes running parallel to the combustion chamber meets.
Der Erfindung liegt nun die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die im Einsatz besonders wirtschaftlich ist.The invention is based on the object, a device to create the type mentioned in the Use is particularly economical.
Die Lösung dieser Aufgabe erfolgt mit einer Vorrichtung mit den Merkmalen des Patentanspruchs 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.The solution of this task is done with a device with the features of claim 1. Advantageous Further developments of the invention are in the subclaims described.
Erfindungswesentlich ist, daß bei einer Vorrichtung zur Reinigung von Abgasen aus industriellen Prozessen mit einer Brennkammer und einem Wärmetauscher in dem Wärmetauscher Einrichtungen zur spiralförmigen Führung des zu reinigenden Abgases um die Brennkammer vorgesehen sind. Auf diese Weise wird das zu reinigende Abgas besonders gut auf alle äußeren Bereiche der Brennkammer verteilt und hat in diesem Bereich eine besonders hohe Verweildauer, so daß das zu reinigende Abgas besonders gut vorgewärmt und erhitzt werden kann und auf diese Weise der Reinigungsprozeß besonders gut und wirtschaftlich erfolgt. Zudem ist eine solche Einrichtung zur spiralförmigen Führung einfach und preisgünstig herstellbar.Is essential to the invention that in a device for Purification of exhaust gases from industrial processes with a combustion chamber and a heat exchanger in the heat exchanger Facilities for helical guidance of the cleaning exhaust gas are provided around the combustion chamber. In this way, the exhaust gas to be cleaned becomes special well distributed to all outer areas of the combustion chamber and has a particularly high length of stay in this area, so that the exhaust gas to be cleaned is particularly good can be preheated and heated and that way the cleaning process is done very well and economically. In addition, such a device is for spiral Leadership easy and inexpensive to produce.
Dabei ist der Wärmetauscher bevorzugt so ausgebildet, daß das zu reinigende Abgas zwischen der Brennkammer und einem die Brennkammer umschließenden Gehäuse geführt ist. Günstigerweise sind dabei sowohl die Brennkammer als auch das die Brennkammer umgebende Gehäuse zylinderförmig ausgebildet. Auf diese Weise lassen sich besonders gute Strömungsverhältnisse der zu reinigenden Abgase erreichen. Zur spiralförmigen Führung der zu reinigenden Abgase um die Brennkammer ist in einer bevorzugten Ausführungsform eine Wendel vorgesehen, die zwischen der Brennkammer und dem die Brennkammer umschließenden Gehäuse angeordnet ist und im wesentlichen von einem Materialstreifen, bevorzugt aus dem gleichen Material wie die übrigen Teile der Vorrichtung, insbesondere aus Edelstahl, gebildet ist.In this case, the heat exchanger is preferably designed so that the exhaust to be cleaned between the combustion chamber and a the combustion chamber enclosing housing is guided. Conveniently, both the combustion chamber and the housing surrounding the combustion chamber is cylindrical. That's the way to go To achieve flow conditions of the exhaust gases to be cleaned. For spiral guidance of the to be cleaned Exhaust gases around the combustion chamber is in a preferred embodiment a coil provided between the Combustion chamber and the combustion chamber enclosing housing is arranged and essentially of a strip of material, preferably of the same material as the remaining parts of the device, in particular of stainless steel, is formed.
In einer bevorzugten Ausführungsform weist die Vorrichtung eine Einrichtung zur Rückführung der heißen Reingase auf. Das bedeutet, daß die aus der Brennkammer austretenden heißen Reingase nicht sofort nach außen abgegeben werden, sondern durch die Vorrichtung zurückgeführt werden, um zusätzlich an der Erwärmung der zu reinigenden Abgase teilzunehmen. Dadurch läßt sich ein besonders hoher Wirkungsgrad erreichen. Die Einrichtung zur Rückführung der heißen Reingase weist bevorzugt ein die Brennkammer umgebendes Führungsgehäuse auf. Die Wendel zur spiralförmigen Führung der zu reinigenden Abgase um die Brennkammer ist dann bevorzugt zwischen diesem Führungsgehäuse und dem äußeren, die Brennkammer umschließenden Gehäuse angeordnet.In a preferred embodiment, the device a device for recycling the hot clean gases on. This means that emerging from the combustion chamber hot clean gases are not immediately released to the outside but are traced back through the device, in addition to the heating of the to be cleaned Exhaust gases participate. This is a special achieve high efficiency. The device for recycling the hot clean gas preferably has a Combustion chamber surrounding guide housing. The helix for helical guidance of the exhaust gases to be cleaned the combustion chamber is then preferred between this guide housing and the outer, the combustion chamber enclosing Housing arranged.
In dem Wärmetauscher ist erfindungsgemäß noch eine zusätzliche Einrichtung zur Durchführung des heißen Reingases durch das zu reinigende Abgas vorgesehen. Insbesondere wird dabei das durch das Führungsgehäuse rückgeführte heiße Reingas dann noch einmal durch das zu reinigende Abgas durchgeführt. Dabei ist die Einrichtung zur Durchführung der heißen Reingase durch das zu reinigende Abgas spiralförmig um die Brennkammer angeordnet. In the heat exchanger according to the invention is an additional Device for carrying out the hot clean gas provided by the exhaust gas to be cleaned. Especially is thereby returned by the guide housing hot clean gas then again through that too cleaning exhaust gas performed. Here is the device to carry out the hot clean gas through the to be cleaned Exhaust gas arranged spirally around the combustion chamber.
Diese Einrichtung ist derart spiralförmig ausgelegt, daß sie gegensinnig zu der spiralförmigen Führung der zu reinigenden Abgase ausgerichtet ist. Gegensinnig ist hier im Sinne der Drehrichtung zu verstehen, so daß sich die entsprechenden Einrichtungen immer wieder kreuzen, insbesondere unter einem Winkel von etwa 90°.This device is designed so spirally that they in opposite directions to the spiral leadership of the is aligned with cleaning exhaust gases. Opposite is here to understand in the sense of the direction of rotation, so that the again and again intersect, in particular at an angle of about 90 °.
Die Einrichtung zur Durchführung des heißen Reingases durch das zu reinigende Gas weist in einer bevorzugten Ausführungsform eine Vielzahl von Wärmetauscherschläuchen oder -rohren auf, wobei in den Wendeln an die Wärmetauscherschläuche angepaßte Durchlässe vorgesehen sind, so daß die Wärmetauscherschläuche auch gegensinnig zu der Einrichtung zur spiralförmigen Führung der zu reinigenden Abgase um die Brennkammer führbar sind.The device for carrying out the hot clean gas through the gas to be purified has in a preferred Embodiment a plurality of heat exchanger tubes or pipes, wherein in the coils to the heat exchanger hoses adapted passages are provided, so that the heat exchanger hoses also in the opposite direction to the Device for the spiral guidance of the to be cleaned Exhaust gases are feasible around the combustion chamber.
In einer anderen bevorzugten Weiterbildung der Erfindung ist im Ausgangsbereich der Brennkammer ein Strömungsgleichrichter vorgesehen. Durch diesen wird eine gleichmäßige Verteilung der aus der Brennkammer austretenden heißen Gase gewährleistet. Im Ausgangsbereich der Brennkammer ist ergänzend bevorzugt eine Bypassöffnung vorgesehen, die günstigerweise steuerbar ist, so daß im Falle eines Überdrucks oder einer zu hohen Temperatur das aus der Brennkammer kommende heiße Gas nach außen ableitbar ist.In another preferred embodiment of the invention is in the exit region of the combustion chamber, a flow rectifier intended. This will make a uniform Distribution of emerging from the combustion chamber guaranteed hot gases. In the exit area of the combustion chamber if a bypass opening is additionally provided, which is conveniently controllable, so that in Case of overpressure or too high a temperature from the combustion chamber coming hot gas can be derived to the outside is.
Weiterhin ist bevorzugt im Ausgangsbereich der Brennkammer ein Katalysator vorgesehen. Der Katalysator ist bevorzugt aus einer Vielzahl von einzelnen Katalysatoren ausgebildet, durch die das heiße Gas hindurchströmen muß. Bevorzugt ist die Mehrzahl von Katalysatoren im Eintrittsbereich der Einrichtung zur Rückführung des heißen Reingases angeordnet. Furthermore, it is preferred in the exit region of the combustion chamber a catalyst is provided. The catalyst is preferably from a multiplicity of individual catalysts formed, through which the hot gas must flow. Preferably, the plurality of catalysts in the inlet region the device for the return of the hot Clean gas arranged.
Nachfolgend wird die Erfindung anhand eines in der Zeichnung dargestellten bevorzugten Ausführungsbeispiels weiter erläutert. Im einzelnen zeigen die schematischen Darstellungen in:
- Fig. 1:
- eine geschnittene Seitenansicht einer erfindungsgemäßen Vorrichtung;
- Fig. 2:
- eine geschnittene Ansicht gemäß der Linie A-A in Fig. 1;
- Fig. 3:
- eine Seitenansicht der erfindungsgemäßen Vorrichtung mit transparent dargestelltem Gehäuse und
- Fig. 4:
- eine perspektivische Ansicht einer Wendel der Vorrichtung.
- Fig. 1:
- a sectional side view of a device according to the invention;
- Fig. 2:
- a sectional view along the line AA in Fig. 1;
- 3:
- a side view of the device according to the invention with transparently represented housing and
- 4:
- a perspective view of a coil of the device.
In Fig. 1 ist eine Vorrichtung 1 zur Reinigung von Abgasen
aus industriellen Prozessen dargestellt. Die Vorrichtung
1 weist ein äußeres zylinderförmiges Gehäuse 14
auf, in dem zentral eine Brennkammer 7 angeordnet ist,
die ebenfalls zylinderförmig ausgebildet ist. Die Brennkammer
7 hat im linken Endbereich einen Brenner 4, wobei
durch eine zentrale Zuleitung 6 Brennstoff zugeführt
wird. Im rechten Endbereich des Gehäuses 14 der Vorrichtung
1 ist ein Eingangsstutzen 21 angeordnet, durch den
Rohgas eintreten kann und dann im äußeren Bereich der
Vorrichtung entlang der als Wendel 15 ausgebildeten
Einrichtung zur spiralförmigen Führung mehrfach um die
Brennkammer 7 herumgeführt wird, dann im Bereich des
Brenners 4 in die Brennkammer 7 eintritt und dort
verbrannt wird. Im rechten Endbereich der Brennkammer 7
sind Strömungsgleichrichter 8 angeordnet, durch die die
verbrannten Gase hindurchströmen. Dahinter ist eine
Bypassklappe 13 angeordnet, die üblicherweise im Betriebszustand
geschlossen ist. Weiterhin sind hinter dem
Strömungsgleichrichter 8 ein Katalysator 9 bzw. eine
Mehrzahl von Katalysatoren 9 im Eingangsbereich zu einem
die Brennkammer 7 umschließenden Ringspalt 10 angeordnet,
durch die die heiße Verbrennungsluft hindurchtritt. Um
die Brennkammer 7 ist ein Führungsgehäuse 16 angeordnet,
wobei sich zwischen diesem Führungsgehäuse 16 und der
Brennkammer 7 der genannte Ringspalt 10 befindet, durch
den die heiße Luft entlang der Brennkammer 7 in Richtung
des Brenners 4 geleitet wird, dort am Ende des Ringspaltes
10 in eine vordere Wendesammelkammer 11 geleitet
wird und von dort in die als Wärmetauscherschläuche 17
ausgebildete Einrichtung zur Durchführung des heißen
Reingases durch das zu reinigende Abgas geleitet wird.
Diese Wärmetauscherschläuche 17 sind ebenfalls spiralförmig
um die Brennkammer geführt, wobei diese entgegengesetzt
zu der Wendel 15 um die Brennkammer 7 geführt
sind. In der dargestellten Ausführungsform sind insgesamt
36 Wärmetauscherschläuche 17 vorgesehen, die parallel
zueinander verlaufen. Die Wärmetauscherschläuche 17 sind
zu dem rechts in der Figur 1 dargestellten Ausgangsstutzen
12 geführt, an dem das erzeugte Reingas letztlich
austritt.In Fig. 1 is a device 1 for the purification of exhaust gases
represented by industrial processes. The device
1 has an outer
In Fig. 2 ist eine Querschnittansicht entlang der Linie
A-A in Fig. 1 dargestellt. Von außen nach innen ist das
Gehäuse 14 und dann das Führungsgehäuse 16 zu erkennen.
Zwischen Gehäuse 14 und Führungsgehäuse 16 wird das durch
den Eingangsstutzen 21 zugeführte Abgas geleitet. Innerhalb
des Führungsgehäuses 16 ist die Brennkammer 7 positioniert,
wobei zwischen Brennkammer 7 und Führungsgehäuse
16 der Ringspalt 10 ausgebildet ist, durch den
das heiße Reingas zurückgeführt wird. Im Eingangsbereich
des Ringspaltes 10 sind insgesamt 12 Öffnungen vorgesehen,
in denen Katalysatoren 9 angeordnet sind, durch
die das aus der Brennkammer 7 kommende heiße Gas hindurchströmen
muß. Zentral ist in der Querschnittsansicht
auch die Bypassklappe 13 zu erkennen, die im Endbereich
der Brennkammer 7 angeordnet ist.In Fig. 2 is a cross-sectional view taken along the line
A-A shown in Fig. 1. This is from outside to
In Fig. 3 ist eine Seitenansicht der erfindungsgemäßen
Vorrichtung 1 mit einem transparent dargestellten Gehäuse
14 dargestellt. Im Inneren des Gehäuses 14 ist das
Führungsgehäuse 16 zu erkennen, um das die Einrichtung
zur spiralförmigen Führung des zu reinigenden Abgases um
die Brennkammer in Form einer Wendel 15 ausgebildet ist,
so daß das zu reinigende Abgas oder Rohgas in Richtung
der Pfeile 20 parallel zu der Wendel 15 spiralförmig um
die Brennkammer 7 zu dem Eingangsbereich der Brennkammer
7 im Bereich des Brenners 4 geführt wird. Weiterhin ist
von der Vielzahl von Wärmetauscherschläuchen exemplarisch
ein Wärmetauscherschlauch 17 dargestellt. Diese verlaufen
ebenfalls spiralförmig um die Brennkammer bzw. um das
Führungsgehäuse 16 und treffen immer wieder auf die
Wendel 15, wobei in der Wendel 15 an die Wärmetauscherschläuche
17 angepaßte Durchlässe 18 vorgesehen
sind. Das austretende Reingas strömt in Richtung der
Pfeile 22.In Fig. 3 is a side view of the invention
Device 1 with a transparent housing shown
14 is shown. Inside the
In Fig. 4 ist eine perspektivische Ansicht der Wendel 15
dargestellt, in der die Vielzahl von Durchlässen 18 für
die Vielzahl von Wärmetauscherschläuchen 17 vorgesehen
ist.4 is a perspective view of the coil 15th
illustrated in which the plurality of
Im Betrieb tritt das zu reinigende Abgas oder Rohgas
durch den Eingangsstutzen 21 in die Vorrichtung 1 ein.
Das zu reinigende Abgas verteilt sich dann in der vorderen
Verteilkammer 2 und strömt dann durch den Wärmetauscher
3, insbesondere entlang der spiralförmig um die
Brennkammer 7 führenden Wendel 15. Dabei wird das Abgas
einerseits durch die von der Brennkammer 7 bzw. dem
Ringspalt 10 abgegebenen Wärme und andererseits von der
durch den Wärmetauscher 3 führenden Einrichtung zur Rückführung
des heißen Reingases, nämlich den Wärmetauscherschläuchen
17, erwärmt. Durch die Zwangsführung der
Wendel 15 verbleibt das eintretende Rohgas oder Abgas
vergleichsweise lange in dem Wärmetauscher 3 und hat dort
einen langen Weg zurückzulegen. Der Weg hängt ab von der
Anzahl der Windungen der Wendel. Im dargestellten Ausführungsbeispiel
wird das Abgas dreimal um die Brennkammer
herumgeführt. Das auf diese Weise vorgewärmte
Abgas tritt im Bereich 5 in die Brennkammer 7 ein und
dient gleichzeitig als Verbrennungsluft für den durch die
Zuleitung 6 durchgeführten Brennstoff und wird dort von
dem Brenner 4 verbrannt. In der Brennkammer 7 erfolgt die
eigentliche Reaktion der in dem Abgas enthaltenen Schadstoffe
aufgrund der hohen Temperatur und des hohen Verbrennungsluftüberschusses.
Ein Temperaturregler hält die
Reaktionstemperatur in der Brennkammer 7 mit Hilfe eines
Brennstoffmengenreglers konstant. Die heißen, auf diese
Weise vorgereinigten Gase strömen in der Brennkammer 7 in
Pfeilrichtung durch den Strömungsgleichrichter 8 und
verteilen sich gleichmäßig über den gesamten Brennkammerquerschnitt.
Die heißen, vorgereinigten Gase durchströmen
dann den Katalysator 9, der bevorzugt als Platinkatalysator
mit umgebenden Keramikfasern ausgebildet ist, und
reagieren mit dem überschüssigen Restsauerstoff und den
restlichen Schadstoffen. Die so gereinigten Gase strömen
durch den Ringspalt 10 in die vordere Wendesammelkammer
11 und verteilen sich in den Wärmetauscherschläuchen 17.
Die Wärmetauscherschläuche 17 sind wendelförmig oder spiralförmig
mit umgekehrtem Drehrichtungssinn wie die
Wendel 15 um die Brennkammer 7 geführt und führen das
gereinigte Gas zu dem Ausgangsstutzen 12. Die am Ende der
Brennkammer 7 angeordnete Bypassklappe 13 ist normalerweise
geschlossen und gibt im Notfall, zum Beispiel bei
einer unzulässig hohen Temperatur das gereinigte Gas direkt
in den Ausgangsstutzen 12. Auf diese Weise wird im
Notfall der Wärmetauscher 3 umgangen, so daß dann die
Temperatur in der Brennkammer 7 fällt und die Übertemperatur
gesenkt wird.During operation, the exhaust gas or raw gas to be purified occurs
through the
Claims (13)
- Device for cleaning waste gases from industrial processes, in particular, a thermal secondary combustion device, with a combustion chamber (7), in which the waste gas to be cleaned is burned, and a heat exchanger (3), in which the waste gas to be cleaned is pre-heated, whereby the heat exchanger (3) has devices for spiral-shaped guiding of the waste gas to be cleaned around the combustion chamber (7),
characterized in that,
the heat exchanger (3) has a device (17) for leading the hot pure gas through the waste gas to be cleaned around the combustion chamber (7), which is oriented in a spiral shaped counter to the spiral-shaped guiding of the waste gas to be cleaned. - Device of claim 1, characterized in that the waste gas to be cleaned is guided between the combustion chamber (7) and a housing (14) surrounding the combustion chamber (7).
- Device of one of claims 1 or 2, characterized in that the combustion chamber (7) and the housing (14) surrounding the combustion chamber are formed to be cylindrical.
- Device of one of the preceding claims, characterized in that the device for spiral-shaped guiding of the waste gas to be cleaned has a coil (15).
- Device of one of the preceding claims, characterized in that the device (1) has a device for returning the hot pure gas.
- Device of claim 5, characterized in that the device for returning the hot pure gas has a guide housing (16) surrounding the combustion chamber (7).
- Device of one of claims 4 through 6, characterized n that the coil (15) is arranged between the guide housing (16) and the housing (14).
- Device of one of the preceding claims, characterized in that the device (17) for guiding the hot pure gas through the gas to be cleaned has a plurality of heat exchanger tubes (17).
- Device of one of claims 4 through 11, characterized in that in the coil (15), filters (18) are provided that are adapted to the heat exchanger tubes (17).
- Device of one of the preceding claims, characterized in that in the outlet region of the combustion chamber (7), a straightening blade (8) is provided.
- Device of one of the preceding claims, characterized in that in the outlet region of the combustion chamber (7), a bypass opening (13) is provided.
- Device of one of the preceding claims, characterized in that in the outlet region of the combustion chamber (7), a catalyzer (9) is provided.
- Device of claim 15, characterized in that a plurality of catalyzers (9) is arranged in the inlet region of the device for returning the hot pure gas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10124495A DE10124495C2 (en) | 2001-05-19 | 2001-05-19 | Device for cleaning exhaust gases from industrial processes |
| DE10124495 | 2001-05-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1258677A2 EP1258677A2 (en) | 2002-11-20 |
| EP1258677A3 EP1258677A3 (en) | 2002-11-27 |
| EP1258677B1 true EP1258677B1 (en) | 2005-08-10 |
Family
ID=7685432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02009627A Expired - Lifetime EP1258677B1 (en) | 2001-05-19 | 2002-04-27 | Apparatus for cleaning exhaust gases from industrial processes |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1258677B1 (en) |
| AT (1) | ATE301804T1 (en) |
| DE (2) | DE10124495C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008052644A1 (en) * | 2008-10-22 | 2010-04-29 | Volkswagen Ag | Method for thermal subsequent treatment of exhaust air of drying chamber, involves supplying exhaust air to burner device and exhaust gas of burner device to recuperation device for keeping moderate temperature of drying chamber |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3311456A (en) * | 1963-03-21 | 1967-03-28 | Universal Oil Prod Co | Apparatus for incinerating a waste gas stream |
| DE2240071A1 (en) * | 1972-08-16 | 1974-02-28 | Otto Dipl Ing Brust | Incinerator for odorous vapours - with spiral recuperator for thermal econ-omy |
| FR2688577A1 (en) * | 1992-03-10 | 1993-09-17 | Dumoutier Massetat Sa | DEVICE FOR PURIFYING GASEOUS EFFLUENTS. |
| DE19910687C2 (en) * | 1999-03-10 | 2001-03-01 | Eisenmann Kg Maschbau | Device for cleaning contaminated exhaust gases from industrial processes, in particular thermal afterburning device |
-
2001
- 2001-05-19 DE DE10124495A patent/DE10124495C2/en not_active Expired - Fee Related
-
2002
- 2002-04-27 EP EP02009627A patent/EP1258677B1/en not_active Expired - Lifetime
- 2002-04-27 DE DE50203859T patent/DE50203859D1/en not_active Expired - Fee Related
- 2002-04-27 AT AT02009627T patent/ATE301804T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE50203859D1 (en) | 2005-09-15 |
| EP1258677A2 (en) | 2002-11-20 |
| EP1258677A3 (en) | 2002-11-27 |
| ATE301804T1 (en) | 2005-08-15 |
| DE10124495A1 (en) | 2002-11-28 |
| DE10124495C2 (en) | 2003-04-10 |
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