C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
48/8
C10J 3/48 (2006.01) C10J 3/54 (2006.01) C10J 3/56 (2006.01)
Patent
CA 1221543
ABSTRACT A solid fuel gasifying unit is used to convert coal and other combustible organic solids to gaseous end products. Solid feed enters the vertical preheat zone of S-shaped gasifying unit and is mixed with a hot recycle reagent such as clay. The solid material fills the preheating zone of the unit to an elevation sufficient to create a gravitational particle flow which forces the solid particles in the lower end of the zone into the bottom of a vertical gasifying zone and through the remaining sections of the unit. In the gasifying zone, a fluidizing gaseous stream such as carbon dioxide or steam is injected to enhance the flow of the solid particles. Also disclosed is a gas fractionating unit and a relatively high pressure solid fuel gasifying unit which contain a reagent powder having a significant weight difference in reduced form as compared with the weight of the powder in oxidized form and which may be circulated through the unit under gravity flow during oxidation- reduction chemical processing. The gas fractionating unit may be used in combination with either gasifying unit, and each unit provides an efficient means to circulate solid particles.
468667
Leas Arnold M.
Smart & Biggar
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