Solid fuel burner

摘要

Burner for conveyor gas propelled particulate solid fuel, said burner comprising a burner block (100) and an injector assembly (200), the injector assembly being at least partially surrounded by an injector passage (130) of the burner block, the injector assembly comprising an inner oxygen supply pipe (210) surrounded by a fuel injector (220), which in turn is surrounded by an oxygen injector (230), each having a downstream end (211,221,231) on the side of the passage outlet (132), the inner oxygen supply pipe having a lateral surface onto which are mounted a set of lateral primary oxygen nozzles (212) for the injection of lateral jets of primary oxygen into the fuel injector with an injection orientation which follows a same sense of rotation around the longitudinal direction and which is directed towards the downstream end of the fuel injector, said lateral primary oxygen nozzles being positioned at a number of different distances from the downstream end of the fuel injector.