A furnace combustion method.

摘要

A method, comprising the provision of an air supply port (3) and a fuel supply port (4) respectively independently opened into a furnace (2) with a distance (l1) kept between them and with a distance (l2) kept between said air supply port and the surrouding furnace wall (5), wherein combustion air and a fuel are injected respectively from said air supply port and said fuel supply port into the furnace, for combustion with recirculation currents formed in the furnace.