WO1996041989A1 - Dispositif pour bruleurs utile pour reduire la formation d'oxyde d'azote dans le foyer de fours industriels - Google Patents
Dispositif pour bruleurs utile pour reduire la formation d'oxyde d'azote dans le foyer de fours industriels Download PDFInfo
- Publication number
- WO1996041989A1 WO1996041989A1 PCT/EP1996/002433 EP9602433W WO9641989A1 WO 1996041989 A1 WO1996041989 A1 WO 1996041989A1 EP 9602433 W EP9602433 W EP 9602433W WO 9641989 A1 WO9641989 A1 WO 9641989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- burner
- burner nozzle
- diffuser
- nitrogen oxide
- nozzle
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
- F23M5/025—Casings; Linings; Walls characterised by the shape of the bricks or blocks used specially adapted for burner openings
Definitions
- the invention relates to a so-called primary measure for reducing nitrogen oxide formation in industrial furnace firing in the form of a device for introducing fuel gas into the furnace, consisting of the components of the burner nozzle, burner nozzle block and an intermediate nozzle plate and characterized in that their stringing together is a positively guided, common one Axis of the gas jet chamber has that this gas jet chamber has a closed surface line and is designed in the form of a diffuser with an opening angle of approximately 19 degrees.
- the state of the art of primary NOx reduction in high-temperature furnaces which is particularly relevant here, is characterized, on the one hand, by the holding of air during combustion, which is replaced by the purest possible oxygen (oxy-fuel process), and, on the other hand, by close - or substoichiometric air supply for combustion, which may also be carried out in stages (among other things, air grading method).
- burners have become known which enable the locally increased temperatures of the flame to be reduced by manipulating the burner with regard to the atomizer characteristics and thus the e Permit the operator to determine favorable setting parameters in a pyrical manner, the furnace-technological repercussions to be compensated for or otherwise included.
- the burner nozzle block which is usually designed as a diffuser with a disadvantageous opening angle significantly larger than 20 °, adjoins the mostly disadvantageously cylindrical 105 nozzles of the burner lance head and nozzle block adapter plate.
- the transition from the cylindrical shape to that of the supercritical diffuser on the nozzle block also overlaps, 110 increasing the flow turbulence and thus with an NO-increasing result, the effects of burner lance angles, so that this negative aspect was not previously explicitly apparent.
- a continuous diffuser is formed, which has an opening angle of about 17 degrees at the burner mouth and that the jacket of the diffuser, including the burner nozzle adapter plate, forms a closed curve that the
- outlet opening of the diffuser on the burner nozzle block has an opening angle of 20 degrees and that the outer positive connections between the three components are cylindrical, so that an angle to one another is not permitted.
- the advantage of the invention consists in a drastic reduction in both the cross-mixing impulses and the injector effect, on the one hand, with respect to the air in the furnace interior near the flame root and, on the other hand, with respect to the ambient air. High flame temperatures at this location are suppressed at the same time
- nozzle (1) of the so-called gas atomizer in the form of a diffuser with an opening angle of 17 °, which is immediately followed by a nozzle stone plate (2), which avoids a tear-off edge and with a continuous surface line of the diffuser the same diffuser opening angle
- this section also opening into a diffuser, which is now formed by the nozzle block (3).
- this has an opening angle that continuously widens from 17 ° and reaches 21 ° at the end of the nozzle block.
- the outer guide of the nozzle stone facing plate and burner nozzle stone is designed as a cylindrical receiving guide (4).
- the connection of the burner nozzle and the nozzle stone plate is also designed.
- the 165 other primary mitigation measures introduced and known per se including the arrangement of a facing plate which previously determined the level, brought about a reduction in the thermal NO to about half the previously achievable level according to the prior art of primary NOx reduction .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Le dispositif décrit pour brûleurs sert à réduire la formation primaire de NOx dans des fours à haute température et comprend l'amenée directe de gaz dans le four au moyen d'un gicleur de forme fermée avec un angle d'ouverture de 19°. Le dispositif est constitué des trois éléments connus en soi que sont le bec du brûleur, l'obturateur (2) de la pierre d'orifice et la pierre d'orifice (3). L'invention se caractérise essentiellement par la ligne enveloppante fermée du gicleur constitué de ces trois éléments et par leur axe commun. Afin d'obtenir cette caractéristique, le dispositif comprend uniquement des guides cylindriques (4) qui ne permettent pas des déviations entre les composants. L'effet combiné de la suppression des rentrées d'air et de l'atténuation de la réaction initiale permet dans un exemple de réduire le NO thermique de 50 % par rapport à l'état antérieur de la technique.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19520650.9 | 1995-06-09 | ||
| DE1995120650 DE19520650A1 (de) | 1995-06-09 | 1995-06-09 | Brennertechnische Vorrichtung zur Minderung der Stickoxidbildung bei Industrieofenbefeuerungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996041989A1 true WO1996041989A1 (fr) | 1996-12-27 |
Family
ID=7763750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1996/002433 WO1996041989A1 (fr) | 1995-06-09 | 1996-06-04 | Dispositif pour bruleurs utile pour reduire la formation d'oxyde d'azote dans le foyer de fours industriels |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE19520650A1 (fr) |
| WO (1) | WO1996041989A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080131827A1 (en) | 2004-03-23 | 2008-06-05 | Andreas Birle | Gas Injector |
| DE102018125872A1 (de) | 2018-10-18 | 2020-04-23 | Flammatec, Spol. S R.O. | Brenngasinjektor, System aus keramischem Wandungselement mit einer keramischen Injektoreinsatzöffnung zum Einsatz eines Brenngasinjektors und Industrieofens |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0091344A1 (fr) * | 1982-04-02 | 1983-10-12 | Societe Europeenne Des Produits Refractaires | Fours à brûleurs transversaux à récupérateur |
| DE3218392A1 (de) * | 1982-05-15 | 1983-11-17 | Sorg-GmbH & Co KG, 8770 Lohr | Brennerhalterung fuer glasschmelzoefen |
| WO1994007804A1 (fr) * | 1992-10-01 | 1994-04-14 | Oberland Glas Ag | Systeme de bruleur pour chauffer des cuves de fusion de verre |
-
1995
- 1995-06-09 DE DE1995120650 patent/DE19520650A1/de not_active Ceased
-
1996
- 1996-06-04 WO PCT/EP1996/002433 patent/WO1996041989A1/fr active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0091344A1 (fr) * | 1982-04-02 | 1983-10-12 | Societe Europeenne Des Produits Refractaires | Fours à brûleurs transversaux à récupérateur |
| DE3218392A1 (de) * | 1982-05-15 | 1983-11-17 | Sorg-GmbH & Co KG, 8770 Lohr | Brennerhalterung fuer glasschmelzoefen |
| WO1994007804A1 (fr) * | 1992-10-01 | 1994-04-14 | Oberland Glas Ag | Systeme de bruleur pour chauffer des cuves de fusion de verre |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19520650A1 (de) | 1996-12-12 |
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