Patent ID: 7493876

Claim:
A steam generating boiler, comprising: and a combustion furnace having an inlet end, an outlet end, and further defined by a baffle wall and a plurality of furnace walls, wherein each of the furnace walls comprises a plurality of steam tubes aligned with the vertical length of the furnace wall and in fluid connection with a steam drum located on the opposite side of the baffle wall and downstream of the outlet end of the combustion furnace, a oxidant inlet positioned near the inlet end of the combustion furnace for providing an oxidant, a fuel inlet positioned near the inlet end of the combustion furnace for providing a fuel, a matrix means consisting of metallic spheres for passively mixing the oxidant and the fuel located downstream of the oxidant and fuel inlets, wherein the outermost edges of the matrix means are free from contact with the furnace walls and the baffle plate.