A
cyclone gasifying
combustion burner and its operation is described. An exemplary burner has an inner cylindrical wall with a contour chamber feeding
combustion air into the inner cylindrical wall, with an open end and a
solid fuel support end where a combustible material forms a fuel
bed. The inner cylindrical wall has a series of inclined air jet holes of substantially predetermined
diameter and disposed at substantially predetermined locations therein to create a unidirectional
cyclone within a
combustion zone defined within the inner cylindrical wall. The air jet holes are disposed at a tangential and
vertical angle whereby the combustion air is drawn into the inner cylindrical wall and creates a
cyclone flow to mix with the combustion gases released from the flaming
pyrolysis fuel
bed and causes the combustion gases to flow in a cyclone path within a
reaction zone to increase the residency, mixing and turbulence time of the combustion gases and simultaneously precipitate
suspended particles against an inner surface of the inner cylindrical wall whereby the particles are caused to gravitate to the fuel
bed where they are removed in a controlled manner during the operation of the burner.