Patent ID: 6132204
Filing Date: 2000-10-17
Classification: C03B,F23D,Y02P

Abstract:
A nozzle assembly for separate injection of a wide oxidant layer and a wide fuel layer into a combustion zone comprising:(a) a first refractory nozzle comprising a central passage and a plurality of first orifices communicating with said passage, the nozzle having a minimum wall thickness measured from said central passage to the external surface of the nozzle in the direction of the minimum nozzle dimension of from about 0.25 to about 0.33 of the minimum nozzle dimension, the first orifices defining a first plane, wherein said minimum nozzle dimension is the vertical length of the assembly passing through one orifice, provided that said vertical length is shorter than the horizontal length of the assembly face along the orifice;(b) a second refractory nozzle comprising a central passage and a plurality of second orifices communicating with said passage, the nozzle having a minimum wall thickness measured from said central passage to the external surface of the nozzle in the direction of the minimum nozzle dimension of from about 0.25 to about 0.33 of the minimum nozzle dimension, the second orifices defining a second plane that is parallel to the first plane, wherein said minimum nozzle dimension is the vertical length of the assembly passing through one orifice, provided that said vertical length is shorter than the horizontal length of the assembly face along the orifice;(c) a first conduit means in fluid communication with each of the first orifices for passing oxidant from an oxidant source to the first orifices; and(d) a second conduit means in fluid communication with each of the second orifices for passing fuel from a fuel source to the second orifices; wherein each of the first orifices is vertically aligned with a corresponding second orifice.