Patent ID: 9416965
Filing Date: 2016-08-16
CPC Classification: F23C,F23D,Y02E

Claim Text:
1. A burner for combusting fuel and oxidizing agent in a long furnace, comprising: a first feed adapted and configured to inject a jet of fuel into a combustion space of a long furnace; a second feed leading to at least one secondary outlet adapted and configured to inject oxidizing agent as at least one secondary jet around the fuel jet; and a third feed leading to at least one enveloping outlet adapted and configured to inject oxidizing agent as at least one enveloping jet, wherein: said at least one secondary jet being equal in number to that of said at least one enveloping jet; each of said at least one secondary jet is enveloped by a corresponding one of said at least one enveloping jet; each of said second and third feeds is supplied with oxidizing agent by a same oxidizing feed line via a manifold; the number of said at least one secondary outlet, a cross-section of each of said at least one secondary outlet, and a position of each of said at least one secondary outlet are adapted and configured to inject the at least one secondary jet at a secondary velocity (v the number of said at least one enveloping outlet, a cross-section of each of said at least one enveloping outlet, and a position of each of said at least one enveloping outlet are adapted and configured to inject the at least one secondary jet at a enveloping velocity (v the at least one secondary outlet comprises a plurality of secondary outlets, the at least one secondary jet comprises a plurality of jets, and said plurality of secondary outlets are radially distributed around the first feed; and v