Black liquor oxidation apparatus

Details Black liquor oxidation apparatus Black liquor oxidation apparatus

1975-09-16

1976-12-14

Tayman, Jr., James H.

Chemistry: physical processes

Physical processes

Crystallization

23262, 23260, 23285, 261124, 261121R, 159 47WL, 423206R, 423514, 162 30K, D21C 1114, B01J 1000

Patent

active

039973000

ABSTRACT:
Gas-liquid contact reaction efficiency in a two stage heavy black liquor oxidation process is improved by co-current contact in the first stage and countercurrent contact in the second stage or vice versa. Such improved efficiency is sustained by preventing the obstruction of gas discharge nozzles. Gas discharge nozzle flow and distribution is sustained at design levels pursuant to distribution system parameters constructed substantially according to the relation ##STR1##

REFERENCES:
patent: 2486693 (1949-11-01), Spijker et al.
patent: 3081289 (1963-03-01), Cheney et al.
patent: 3849059 (1974-11-01), Filippov et al.

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