UREA-BASED MIXING PROCESS FOR INCREASING COMBUSTION EFFICIENCY AND REDUCTION OF NITROGEN OXIDES (NOX)

摘要

A method for increasing combustion process and furnace efficiency and for reducing NOx formation, including the steps of: providing a furnace with a plurality of secondary air injection ducts, asymmetrically positioned in an opposing manner; injecting fuel with primary air through a first stage prior to injection of a second air; injecting secondary air through the plurality of reagent injection ducts; providing a staged combustion system including a furnace with asymmetrical injection ports introducing at least one reagent to the reactor by asymmetrical injection at predetermined, spaced apart locations; controlling the asymmetrical injection to produce a high velocity mass flow and a turbulence resulting in dispersion of the at least one reagent into the reaction system, wherein one of the at least one reagents is an NH3-producing compound; thereby providing increased reaction efficiency and reduced NOx formation in the combustion process.