DE3533272A1 - Arrangement of ducts or pipes for waste-gas recirculation in furnaces - Google Patents
Arrangement of ducts or pipes for waste-gas recirculation in furnacesInfo
- Publication number
- DE3533272A1 DE3533272A1 DE19853533272 DE3533272A DE3533272A1 DE 3533272 A1 DE3533272 A1 DE 3533272A1 DE 19853533272 DE19853533272 DE 19853533272 DE 3533272 A DE3533272 A DE 3533272A DE 3533272 A1 DE3533272 A1 DE 3533272A1
- Authority
- DE
- Germany
- Prior art keywords
- arrangement
- pipes
- gas recirculation
- furnaces
- ducts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002912 waste gas Substances 0.000 title 1
- 239000007789 gas Substances 0.000 claims description 15
- 239000000969 carrier Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
- F24H1/285—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
Abstract
Description
Die Erfindung betrifft eine Abgas-Rückführung in die Feuerung für Brennstoffe zum Zwecke der Stickoxydminderung.The invention relates to an exhaust gas recirculation in the furnace for Fuels for the purpose of nitrogen oxide reduction.
Bekannt ist, die Rauchgasrückführung in einem vom Wärmeerzeuger getrennt verlaufenden Kanal vorzunehmen. Dies hat den Nachteil, daß einmal umständliche und teure Kanäle erstellt werden müssen und der rück geführte Abgasstrom in seiner Temperatur nicht abgesenkt werden kann, obwohl eine verminderte Temperatur dieser rückgeführten Abgase ebenfalls zur Reduzierung des NO X -Gehaltes der Verbrennungsgase beitragen würde.It is known to carry out the flue gas recirculation in a duct running separately from the heat generator. This has the disadvantage that once cumbersome and expensive channels have to be created and the temperature of the recirculated exhaust gas stream cannot be reduced, although a reduced temperature of these recirculated exhaust gases would also contribute to reducing the NO x content of the combustion gases.
Um diesen Nachteil zu beseitigen, wird erfindungsgemäß vorgeschlagen, den Abgaskanal zur Rückführung der Abgase so anzuordnen, daß dieser innerhalb des Wärmeerzeugers oder entlang seiner Wandung auf kurzem Weg zur Feuerung und so verläuft, daß Wärme der Abgase an den Wärmeträger - vornehmlich Wasser - abgegeben und damit die Temperatur der Abgase vor Eintritt in die Feuerung abgesenkt wird.In order to eliminate this disadvantage, the invention proposes arrange the exhaust duct for the return of the exhaust gases so that this within the heat generator or along a short distance along its wall for firing and runs so that heat of the exhaust gases to the heat transfer medium - primarily water - and thus the temperature of the exhaust gases is lowered before entering the furnace.
In Fig. 1 und Fig. 2 wird ein Beispiel einer derartigen Anordnung dargestellt.In Fig. 1 and Fig. 2 shows an example of such an arrangement is illustrated.
Die Verbrennungsgase, herrührend von der Feuerung 1, gelangen über das Flammrohr 2, die innere Wendekammer 3, den ersten Rohrzug 4, die vordere Wendekammer 5, den zweiten Rohrzug 6 in den Abgaskasten 7. Ein Teilstrom der Abgase wird über das Rohr 8, welches innerhalb des Wasserraumes angeordnet ist, zur Feuerung mittels des Kanales 9 zur Feuerung 1 zurückgeführt.The combustion gases originating from the furnace 1 pass into the exhaust gas box 7 via the flame tube 2 , the inner turning chamber 3 , the first pipe train 4 , the front turning chamber 5 , the second pipe train 6 . A partial flow of the exhaust gases is returned to the furnace 1 via the pipe 8 , which is arranged within the water space, for firing by means of the channel 9 .
Die Abgase kühlen im Rohr 8 ab. Der Weg vom Abgaskasten zurück zur Feuerung ist in einfacher Weise zu realisieren.The exhaust gases cool down in tube 8 . The way from the flue gas box back to the furnace is easy to implement.
Als weiteres Beispiel wird in Fig. 3 und Fig. 4 gezeigt, wie die Abgas rückführung aus dem Abgaskasten 7 über einen am Außenmantel 10 des Wärmeerzeugers entlang geführten Kanal 11 erfolgt, der ebenfalls diese erfindungsgemäße Aufgabe erfüllt.As another example 4 is shown in Fig. 3 and Fig., As the exhaust gas recirculation takes place via a on the outer casing 10 of the heat generator guided along channel 11, which also fulfills this task according to the invention from the exhaust box 7.
Gezeichnet ist zur Verdeutlichung in Fig. 2 für die Abgasrückführung nur ein einziges Rohr Pos. 8. Selbstverständlich können auch mehrere Rohre angeordnet werden. In gleicher Weise läßt sich auch der in Fig. 4 dargestellte Kanal 11 in mehrteiliger Ausführung herstellen. Auch die Lage des Flammrohres 1, der Rauchrohrzüge 4 und 6, deren Anzahl und schließlich auch des Rohres 8 und des Kanales 11 sind beispielhaft gewählt.For clarification, only a single pipe item 8 is drawn for the exhaust gas recirculation in FIG. 2. Of course, several pipes can also be arranged. In the same way, the duct 11 shown in FIG. 4 can also be produced in a multi-part design. The position of the flame tube 1 , the flue pipes 4 and 6 , their number and finally also the tube 8 and the channel 11 are chosen as examples.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853533272 DE3533272A1 (en) | 1985-09-18 | 1985-09-18 | Arrangement of ducts or pipes for waste-gas recirculation in furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853533272 DE3533272A1 (en) | 1985-09-18 | 1985-09-18 | Arrangement of ducts or pipes for waste-gas recirculation in furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3533272A1 true DE3533272A1 (en) | 1987-03-19 |
Family
ID=6281288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853533272 Withdrawn DE3533272A1 (en) | 1985-09-18 | 1985-09-18 | Arrangement of ducts or pipes for waste-gas recirculation in furnaces |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3533272A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8707499U1 (en) * | 1987-05-25 | 1988-09-29 | Viessmann, Hans, Dr., 3559 Battenberg, De | |
| DE3738622C1 (en) * | 1987-11-11 | 1989-02-02 | Wolf Klimatechnik Gmbh | Heating furnace with equipment for recirculating flue gas |
| EP0347797A1 (en) * | 1988-06-24 | 1989-12-27 | Ygnis Holding Ag | Process for reducing NOx in exhaust gases from furnaces, and furnace with means for reducing the NOx content in exhaust gases |
| WO1993007794A1 (en) * | 1991-10-16 | 1993-04-29 | Koppens Machinefabriek B.V. | Oven with smoke gas bypass |
| AT397712B (en) * | 1988-08-05 | 1994-06-27 | Vaillant Gmbh | METHOD AND DEVICES FOR RETURNING AN EXHAUST PART INTO A FLAME AREA |
| DE19654732A1 (en) * | 1996-12-30 | 1998-07-02 | Vorwaermer Und Kesselbau Koeth | Large water boiler with flue gas recycling |
| US6247917B1 (en) * | 1998-08-21 | 2001-06-19 | Texaco Inc. | Flue gas recirculation system |
| DE10016007A1 (en) * | 2000-03-31 | 2001-12-13 | Udo Hellwig | Twin-flue heat exchanger has first flue formed with furnace chamber and second flue disposed with parallel structured heat exchanger pipes |
-
1985
- 1985-09-18 DE DE19853533272 patent/DE3533272A1/en not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| Druckschrift der Babcock AG: "Entwickung eines NO¶x¶-armen Öl-/Gas-Brenners", P-Nr. 1858-5/84 * |
| JP 55-1 34 210 (A), In: Patents Abstr. of Japan, Sect. M, Vol. 4, (1980), Nr. 187, (M-48) * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8707499U1 (en) * | 1987-05-25 | 1988-09-29 | Viessmann, Hans, Dr., 3559 Battenberg, De | |
| DE3738622C1 (en) * | 1987-11-11 | 1989-02-02 | Wolf Klimatechnik Gmbh | Heating furnace with equipment for recirculating flue gas |
| EP0347797A1 (en) * | 1988-06-24 | 1989-12-27 | Ygnis Holding Ag | Process for reducing NOx in exhaust gases from furnaces, and furnace with means for reducing the NOx content in exhaust gases |
| CH677139A5 (en) * | 1988-06-24 | 1991-04-15 | Ygnis Sa | |
| AT397712B (en) * | 1988-08-05 | 1994-06-27 | Vaillant Gmbh | METHOD AND DEVICES FOR RETURNING AN EXHAUST PART INTO A FLAME AREA |
| WO1993007794A1 (en) * | 1991-10-16 | 1993-04-29 | Koppens Machinefabriek B.V. | Oven with smoke gas bypass |
| US5476034A (en) * | 1991-10-16 | 1995-12-19 | Koppens Machinefabriek B.V. | Oven with smoke gas bypass |
| DE19654732A1 (en) * | 1996-12-30 | 1998-07-02 | Vorwaermer Und Kesselbau Koeth | Large water boiler with flue gas recycling |
| DE19654732C2 (en) * | 1996-12-30 | 2000-10-05 | Vorwaermer Und Kesselbau Koeth | Shell boiler with exhaust gas recirculation |
| US6247917B1 (en) * | 1998-08-21 | 2001-06-19 | Texaco Inc. | Flue gas recirculation system |
| DE10016007A1 (en) * | 2000-03-31 | 2001-12-13 | Udo Hellwig | Twin-flue heat exchanger has first flue formed with furnace chamber and second flue disposed with parallel structured heat exchanger pipes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8130 | Withdrawal |