F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
F23B10/00—Combustion apparatus characterised by the combination of two or more combustion chambers
C—CHEMISTRY; METALLURGY
C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone