North American reGen ® Gas Burners
Bulletin 4630
4630 reGen Burners are made up of line burner sections to fire low temperature applications where heat must be distributed uniformly over a large area.
FEATURES
DIRECT FIRED AIR HEATING APPLICATIONS:
If blower supplies sufficient air through burners for complete combustion, reGen Burners operate dependably in an inert at- mosphere. Burners have machined ends, permitting assembly of various configurations without gaskets. Burner sections are made from cast iron. The flame retention strips, which give the burner its stability in high velocity air streams, are made from 304 stainless steel. They are designed to prevent combustion between the strip and casting, resulting in lower strip and casting temperatures to prolong burner life.
— Drying paints, textiles, metal parts, ink, etc. — Recirculating core ovens. — Cooking, evaporating, heating, etc. in the food industry. — Heating kettles — Preheating metal bars, castings, etc.; — Glass lehrs and fire polishing. reGen Burners are stable with up to 12"w.c. (30 mbar) mixture pressure in air stream velocities as high as 33 ft/s (10.1 m/s). They can operate in ambient temperatures up to 400 °F (204 °C). Assemblies can fire in any direction, including down. Flames are short and sharp at correct air/gas ratio, longer and yellow-tipped with rich mixtures. An assembly lights reliably from a single pilot. See Page 2 and 3 for 4630 selection information.
PREMIX SUPPLY
6430 reGen burners require air/fuel mixers to supply the proper amount of combustible premix to the assemblies. Inspirators can be used (with natural gas) but 3065 aspirator mixers are preferred for good turndown and air/fuel ratio control. Burners can be operated at mixture pressures from 0.35 to 12"w.c., (0.9 to 30 mbar) giving almost 6:1 turndown. A cross-connected atmospheric 7218 regulator should be used to modulate the gas flow. Natural gas and propane are the preferred fuels, but mixed and coke oven gas may work with a reduced stability range. In general to avoid flashback the mixture pressure may need to be higher than 0.35"w.c. (0.9 mbar) when using fuels with Hydrogen. The mixture pressure may need to be reduced for fuel with a lower calorific value than natural gas.
A typical large reGen Burner assembly, with sections selected and arranged to fit a specific duct cross section with "J" flame rod adapter on pilot seciton Note that this assembly uses legacy burner sections no longer generally available.
A small reGen Burner assembly two straight sections with a single end feed premix inlet.
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