METHOD AND DEVICE FOR PYROLYZING AND GASIFYING ORGANIC SUBSTANCES OR SUBSTANCE MIXTURES

• Main Authors: FUNK, GUNTER, KRUMM, WOLFGANG, HAMEL, STEFAN
• Format: Patent
• Language: English; French
• Published: 11.01.2001
• Edition: 7
• Subjects: AIR; BLASTING; CARBURETTING AIR OR OTHER GASES; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CONSUMING WASTE PRODUCTS BY COMBUSTION; CREMATION FURNACES; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; DISPOSAL OF SOLID WASTE; FUELS; HEATING; LIGHTING; LUBRICANTS; MECHANICAL ENGINEERING; METALLURGY; METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; RECLAMATION OF CONTAMINED SOIL SOIL; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING; WEAPONS

The invention relates to a method for pyrolyzing and gasifying organic substances or substance mixtures. The organic substances are introduced into a drying and pyrolysis reactor (1) in which they are brought into contact with the fluidized bed material (35) of the combustion fluidized bed (3) or in which they are brought into contact with the fluidized bed material (35) and the reactor wall of the combustion fluidized bed (3), whereby a drying and a pyrolysis occurs. The fluidized bed material and the solid residue which contains carbon are fed, optionally with portions of the water vapor and of the pyrolysis gases, back into the combustion fluidized bed (3) in which the residue of the organic substances which contains carbon is combusted, the fluidized bed material is heated and is fed once again into the pyrolysis reactor (1). The water vapor resulting from the drying, and the pyrolysis gases (13) are subsequently treated with condensable substances in another reaction zone (2) so that a product gas (23) having a high thermal value is produced. The drying and the pyrolysis are carried out in at least one or mo re pyrolysis reactors (1). The combustion fluidized bed (3) in which the pyrolysis residues are combusted is operated as a stationary fluidized bed. The pyrolysis gases (13) are led into an indirect heat exchanger. The firing waste gases (37) are, optionally with the fluidized bed material of the combustion fluidized bed (3), brought into contact with the indirect heat exchanger (2) in such a manner that the heat content thereof is used for reacting the pyrolysis gases (13) with the reaction agent (21).