Patent ID: 8545726

Claim:
A burner for the gasification of a solid fuel, comprising a burner front having an opening for discharging a solid fuel, the burner comprising an outlet at or upstream of the burner front based upon the direction of fluid flow for discharging an oxygen containing gas, wherein the opening for discharging the solid fuel is fluidly connected to a central passage way and wherein the outlet for discharging the oxygen containing gas is fluidly connected to an annular passage way for passage of oxygen and wherein the central passage way has a downstream part wherein the diameter of the passage way increases over a first length and subsequently decreases over a second length terminating at the burner front and wherein inside the downstream part of the central passage way a hollow member is positioned which is closed at one end and has an opening at or upstream of the burner front based upon the direction of fluid flow, the hollow member having an increasing diameter and decreasing diameter aligned with the increasing and decreasing diameter of the central passage way to form an annular passage for the solid fuel terminating at the burner front in an inwardly directed annular opening for discharging the solid fuel and wherein the hollow member is fluidly connected with the annular passage way for the oxygen containing gas by means of one or more connecting conduits, wherein the outlet is not a single central opening at the burner front.