SFFG – Flat Flame Gas Burners Bulletin 1.6 August 2009
Fives North American Combustion UK, Ltd.
SFFG – Features 6:1 turndown
Max excess air – 250% Max excess gas – 10%
Burner Design The SFFG series of burners employs the rapidly rotating action of the burning gases to produce, in combination with the specially shaped tile, a flat flame with minimal axial velocity but a very high radial velocity. The spinning action is generated at the nozzle where the fuel and air mix – the result is a more efficient rotation and hence the flat flame characteristic of the burners are maintained throughout the turndown range. The SFFG can be mounted close to the load to achieve maximum heat transfer efficiency without load deterioration. The standard burner is supplied with either a rectangular or round refractory tile and employs direct spark ignition and ionisation electrodes for flame monitoring. Pilot ignition may be employed and flame monitoring by UV scanners on selected models – contact F ives . The SFFG burners are suitable for use with automated ignition and flame supervision systems and can accept pre-heated combustion air up to 350°C. Round or square refractory tiles Easy to fit in furnace roof or walls Pre-heated air up to 350°C Burns any clean industrial gas Excellent flame stability
The SFFG Flat Flame gas burner produces a wall hugging, circular pattern flame, giving extremely even heat distribution with minimal forward flame projection. The burner is ideally suited to any application where flame impingement is detrimental to product quality or where a very high radiation element is beneficial such as heat treatment furnaces or galvanising tanks etc. The burners are available in six capacities, from 58 to 730 kW. Typical Applications • Galvanising tanks
• Plate heating furnaces • Heat treatment furnaces • Billet heating furnaces
Capacities and Specifications
Model
Capacity Pressures @ 15°C (mbar)
Flame characteristics
No.
(kW)
Air*
Gas*
Approx dia**
Min tile to work distance*** (mm)
(mm)
SFFG1 SFFG2 SFFG3 SFFG4 SFFG5 SFFG6
58
35 35 35 35 35 35
10 10 10 10 10 10
350 400 450 550 750 900
200 200 200 250 280 330
116 203 290 438 730
* Minimum required at burners, based on a neutral combustion chamber pressure. ** The normal minimum burner to burner centre to centre is the same as the flame diameter. Burners may be positioned closer to each other but there will be some flame interference. *** Recommended minimum tile to work distance should be maintained to maximise temperature uniformity.
Fives North American Combustion UK, Ltd. Heath Mill Road, Wolverhampton WV5 8BD England Tel +44 (0) 1902 891200 Fax +44 (0) 1902 895552 email: fna.salesUK @fivesgroup.com www.fivesgroup.com
Made with FlippingBook flipbook maker