C - Chemistry – Metallurgy – 05 – B
Patent
C - Chemistry, Metallurgy
05
B
23/415, 71/55
C05B 7/00 (2006.01) B01J 8/10 (2006.01)
Patent
CA 1218517
ABSTRACT OF THE DISCLOSURE This invention relates to a rotary drum chemical reactor and processes carried out therein and in particular to a reactor for contacting particulate solid material passing through the drum with different reactants in series. More particularly the drum reactor is constructed to have an acidifying chamber in which acid is introduced into the material and an ammoniation chamber in which ammonia is introduced into the material. The specification discloses an apparatus and process comprising passing the particulate material into a first longitudinal portion of a rotating drum which is arranged so as to move the material from said first portion to a second drum portion upon rotation of the drum; creating in said first drum portion a downwardly falling stream of the particulate material by means of lifting flights provided in said first drum portion; spraying a first fluid reactant onto the free-falling stream; creating in said second drum portion a tumbling bed of the particulate material which has passed from said first drum portion into said second drum portion, said bed being in contact with the drum wall and having an upper end and a lower end; and introducing a second fluid reactant into said bed from at least one injection orifice located so as to be continuously embedded in said bed.
448048
Agro-Systems Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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