HIGH CAPACITY/LOW NOX RADIANT WALL BURNER

摘要

A method for operating a radiant wall burner to heat a radiant surface adjacent a combustion zone, said method comprising: providing a fuel lean combustible fuel-air mixture; causing the fuel-air mixture to flow outwardly from a main nozzle, into said combustion zone and generally accross said radiant surface in a circular pattern which essentially surronds said main nozzle in a radial direction; causing the fuel-air mixture to flow outwardly from said main nozzle at an initial velocoty which exceeds the flame speed o f the mixture, whereby a detached round flame is created; providing a secondar y fuel at a location in the furnace on an opposite side of said zone from said radiant surface, said secondary fuel constituting a substantial portion of t he total fuel provided to said combustion zone by said fuel-aire mixture supply system and said secondary fuel nozzle system.