Particulate waste product gasification system and method

C - Chemistry – Metallurgy – 10 – J

Patent

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C10J 3/54 (2006.01) C10J 3/56 (2006.01) C10J 3/72 (2006.01)

Patent

CA 2628251

Embodiments include a gasification process where the carbon content of the residue from gasification of agricultural waste products and the fly ash content of the gaseous exhaust is controlled by regulated inflow of gasification-supporting air in a plurality of flow stream at different velocities to enhance fluidization of particulate feed in a bed being raked by a rotating sweep arm inducing radially outward movement of gasification residue into a collecting zone from which the residue enters a discharge duct. The particulate feed is dropped at a location in the gasification chamber above the bed in alignment with the inflow stream of maximum velocity.

L'invention concerne un processus de gazéification où la teneur en carbone du résidu de la gazéification de déchets agricoles et la teneur en cendres volantes de l'effluent gazeux sont maîtrisées par une admission régulée d'air soutenant la gazéification dans une pluralité de flux d'écoulement à des vitesses différentes afin de renforcer la fluidisation de la charge particulaire dans un lit ratissé par un bras de balayage rotatif provoquant un mouvement radial vers l'extérieur du résidu de gazéification dans une zone de collecte à partir de laquelle le résidu entre dans un conduit d'évacuation. La charge particulaire est lâchée à un emplacement dans la chambre de gazéification situé au-dessus du lit et aligné avec le flux d'admission de vitesse maximale.

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