Process and apparatus for producing dry black liquor solids

Details Process and apparatus for producing dry black liquor solids Process and apparatus for producing dry black liquor solids

1989-11-30

1991-01-29

Lacey, David L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With regeneration, reclamation, reuse, recycling or...

162 301, 162 31, 162 29, 162239, D21C 1112

Patent

active

049884077

ABSTRACT:
This invention relates to the production of dry black liquor solids and more particularly to a process and apparatus for producing such solids having a moisture content below five percent water by weight. The process includes supplying a first stream of black liquor having a solids content in a range such that the first stream flows as a viscous liquid, supplying a second stream of black liquor solids having a solids content in a range such that the second stream flows as a friable granular dry solid, and mixing the first and second streams of black liquor solids and producing an output stream having a solids content such that the output stream flows as a dry solid.

REFERENCES:
patent: 2586818 (1952-02-01), Harms
patent: 4363698 (1982-12-01), Nelson et al.
patent: 4377439 (1983-03-01), Lien
patent: 4619732 (1986-10-01), Clay et al.
patent: 4726908 (1988-02-01), Kruse et al.
patent: 4775457 (1988-10-01), Beer et al.
patent: 4865750 (1989-09-01), Ciriachs et al.
Harrison, R. E. et al., Ultra-High-Solids Evaporation of Black Liquor, Tappi Journal, Feb. 1988, pp. 61-66.
Hyoty, P. A. et al., High-Solids Black Liquor Combustion, Tappi Journal, Jan. 1988, pp. 108-111.

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