Patent ID: 6089170
Filing Date: 2000-07-18
Classification: F23C,F23D,Y02E

Abstract:
A combustor, comprising:an air injection mechanism to create a combustion air path;a flame stabilizing mechanism to create an aerodynamic flow pattern having an internal recirculation zone; anda set of arc-shaped gas injector arrays, each arc-shaped gas injector array comprising a cluster of gas injection orifices radially spaced at a first distance from one another about a central burner axis of said combustor, where said arc-shaped gas injector arrays are radially spaced at a second distance from one another about said central burner axis, where said second distance is substantially greater than said first distance, each arc-shaped injector array injecting an arc-shaped stream of gas that intersects with said combustion air path at the boundary of said internal recirculation zone to produce a fuel rich flame segment that is separated from an adjacent fuel rich flame segment, created by an adjacent arc-shaped gas injector arrays by an air rich zone, an interaction between said fuel rich flame segment and said air rich zone resulting in low NOx combustion of said gas.