METHOD AND APPARATUS FOR PRODUCING COMBUSTIBLE GASES FROM SOLID FUEL, METHOD AND APPARATUS FOR TREATING RAW PHOSPHATES Russian patent published in 1998 - IPC

FIELD: production of combustible gases. SUBSTANCE: method involves subjecting portion of solid fuel to pyrolysis in pyrolysis reactor 43 to produce combustible gases and carbon-bearing material; feeding carbon-bearing material from reactor 43 into furnace 45 to obtain combustion products containing glowing flue gases and ash particles; separating ashes from combustion products in separator 47 and directing large ash particles into pyrolysis reactor 43; feeding another portion of solid fuel through pipeline 42 and burning it in furnace together with carbon-bearing material fed from reactor 43; treating raw phosphates in similar way; separating portion of ashes from separator 47 for heating air supplied into furnace 45. Construction of apparatuses for accomplishing methods is described in Specification. Method allows low-quality fuels and phosphates with relatively low content of organic material to be used. EFFECT: increased efficiency and provision for complete extraction of organic substance from raw material. 15 cl, 10 dwg