Performance From Fuel Rich To Xces Air With Low Nox Emissions
These sealed-in, nozzle-mix burners are stable over a wide range of air/gas ratios from large amounts of Xces air, to stoichiometric (chemically correct air/gas ratio), up to 50% Xces fuel (provided additional air for combustion is supplied to the furnace near the burners). Burners can be ignited at rich, lean, or correct air/gas ratio, then immediately turned to high fire. NOx emissions are low for all air/gas ratios. The most common ratio control system for 1422 Burners uses a cross-connected regulator. When appropriate for the application, fully metered flow systems and fuel only control are very satisfactory. Required gas pressures are low: 2”wg at burner for coke oven gas, less for natural gas.
When reassembling the burner, the pilot and flame detector notches in the tile and mounting must be in proper alignment with the pilot and flame detector connections on the burner body. Burner is complete with cast iron mounting plate and 9" long 1500oC castable burner tile which must be supported and sealed in a hard refractory furnace wall. (See page 2 for optional construction suitablefor fiber lined furnaces.) When the furnace wall is thicker than the tile length, the tunnel beyond the end of the burner tile should be flared at a 30° or greater included angle, starting at the OD of the tile.
|XCES AIR GAS BURNER - 1422|
|Burner Designation||Combustion Air Capacities, scfh (Standard Cubic Feet PerHour) Air pressure Drop Across the Burner in inches of WGP||Approx. Flame length in mm with 27” wg main air (in open furnace)||Maximum percent Xces air* (at inches of WGP & directs park)|
|Xces air rates are improved with constant pilotair.|