OXY-FUEL BURNER FOR LOW-CALORIFIC FUEL GAS AND USE THEREOF

摘要

The invention relates to a burner for combustion of a low-calorific fuel gas with an oxygen-rich oxidant, said burner including: a primary central fuel passage (1) provided with a bluff body (5), a primary oxidant passage (2) which surrounds the primary fuel gas passage (1), a refractory shell (6) which surrounds and extends beyond the two primary passages (1, 2), a secondary oxidant passage (3) which surrounds the refractory shell (6) and one or more secondary fuel gas passages (4) surrounding the refractory shell (6) and surrounded by the secondary oxidant passage and/or positioned inside the refractory shell (6) and positioned around the primary oxidant passage (2).