C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
C10J 3/80 (2006.01) B09B 3/00 (2006.01) C10J 3/54 (2006.01) F23G 5/027 (2006.01)
Patent
CA 2418700
According to a method for gasifying solid materials (waste materials, biomass (wood), coal containing sulphur) in a fluidized bed (5), water vapour and oxygen are blown into the fluidized bed as gasifying agents. Small energy losses are achieved by strongly superheating the water vapour with hot reaction gases, the superheater functioning with a low differential pressure load. The reaction gases that leave the fluidized bed (5) are post-gasified in the open area (9) above the fluidized bed (5) in the reactor (1), with a supply of additional oxygen. A molar ratio of water vapour supplied and carbon contained in the material to be gasified of at least 2.1 is established.
Dans un procédé de gazéification de matières solides (déchets, biomasse (bois), charbon soufré), on insuffle dans un lit fluidisé (5) de la vapeur d'eau et de l'oxygène comme agents de gazéification. Pour réduire les pertes d'énergie, on procède à une forte surchauffe de la vapeur d'eau par des gaz de réaction chauds. Le surchauffeur ne fonctionne qu'à faible charge de pression différentielle. Les gaz de réaction quittant le lit fluidisé (5) sont regazéifiés dans l'espace libre (9) situé au-dessus du lit fluidisé (5) dans le réacteur (1) avec apport d'oxygène supplémentaire. Ainsi on règle un rapport molaire Vapeur d'eau ajoutée/Carbone contenu dans la matière à gazéifier de 2,1 minimum.
Berger Bruno
Rudelstorfer Ernst
Berger Bruno
Borden Ladner Gervais Llp
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