Process and apparatus for drying and calcining sodium bicarbonat

Details Process and apparatus for drying and calcining sodium bicarbonat Process and apparatus for drying and calcining sodium bicarbonat

1992-12-23

1994-07-05

Gromada, Denise

Drying and gas or vapor contact with solids

Apparatus

With fluid current conveying of treated material

34 66, 34 82, 34 85, 34591, 16510416, 422142, 432 58, F26B 308

Patent

active

053256069

ABSTRACT:
Damp sodium bicarbonate filter cake is pre-dried and calcined to produce light soda as in a process comprising a carbon dioxide ebullated fluid bed pre-dryer working in connected series relationship with a plurality of carbon dioxide ebullated fluid bed/bag filter calcination systems such that bicarbonate decomposition during pre-drying is minimized and the thermal treatment of small particles during calcination is optimized.

REFERENCES:
patent: 3933977 (1976-01-01), Ilardi et al.
patent: 4974334 (1990-12-01), Roddewig
patent: 5034196 (1991-07-01), Zenz et al.
patent: 5184671 (1993-02-01), Alliston et al.

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