Process and apparatus for recovery of spent pulping liquors

Details Process and apparatus for recovery of spent pulping liquors Process and apparatus for recovery of spent pulping liquors

D - Textiles, Paper

21

C

9/37, 9/36.2

D21C 11/04 (2006.01) D21C 11/00 (2006.01) D21C 11/12 (2006.01)

Patent

CA 1169607

I. P. 2487C PROCESS AND APPARATUS FOR RECOVERY OF SPENT PULPING LIQUORS Abstract of the Disclosure . An integrated system, process and apparatus are provided for the efficient and effective recovery of spent pulping liquors, particularly kraft black liquor, whereby in an initial stage concentrated spent liquor is subjected to combustion in a reactor equipped with a plurality of parti- culate materials, at least one of which is of finer particle size than the other, preferably subjecting a portion of said particulate materials to at least one further treatment in a fluidized bed unit, and treating the inorganic solid combus- tion products in a reducing atmosphere.

373421

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