Black liquor recovery

Details Black liquor recovery Black liquor recovery

D - Textiles, Paper

21

C

9/37, 9/36.6

D21C 11/10 (2006.01)

Patent

CA 1104764

ABSTRACT OF THE DISCLOSURE Method and apparatus for oxidation of black liquor form an alkaline process for pulping cellulosic material in A fluid bed furnace wherein indirect heat exchange means are provided within the fluid bed in the furnace, means are provided to sense the temperature in the bed and to control the flow of fluid through the heat exchanger in accordance with the temperature sense thereby to maintain the tempera- ture in the bed substantially constant at a preselected value to form pellets of the inorganic chemical to be recovered and to recover heat from the bed.

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