LOW NOX PREMIX BURNER APPARATUS AND METHODS

摘要

Low NO x axial premix burner apparatus and methods for burning fuel gas a re provided by the present invention. The methods of the invention are basicall y comprised of the steps of mixing a first portion of the fuel gas and all of the air to form a lean primary fuel gas-air mixture, discharging the lean primary fuel gas-air mixture into the furnace space whereby the mixture is burned in a primary combustion zone therein, discharging a second portion of the fuel gas into t he primary combustion zone to stabilize the flame produced therein and discharging the remaining portion of the fuel gas into a secondary combustion zone in the furnace space.