System for drying and burning viscous aqueous liquors which cont

Details System for drying and burning viscous aqueous liquors which cont System for drying and burning viscous aqueous liquors which cont

1980-06-27

1982-08-31

Kratz, Peter F.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

For chemical recovery of chemicals from waste paper making...

110238, 162 302, D21C 1104

Patent

active

043472206

ABSTRACT:
Sawdust is mixed with partially concentrated black liquor from pulp manufacture. The sawdust, coated with the solids of the black liquor, is dried by heated air. The sawdust, coated with organic and inorganic black liquor solids, is fed to the hearth of a chemical recovery boiler. Combustion of the char formed on the boiler hearth produces heat which causes additional organic material to pyrolize. The inorganic material combines to form molten smelt. The moisture-laden, heated air from the dryer is introduced into the boiler with the secondary air and the smelt is tapped off into an aqueous solution to form green liquor.

REFERENCES:
patent: 3309262 (1967-03-01), Copeland
patent: 3366535 (1968-01-01), Cann
patent: 4011129 (1977-03-01), Tomlinson
patent: 4232614 (1980-11-01), Fitch et al.
New Fluidized Bed System Produces Saltcake from Spent NSSC Liquor, Paper Trade Journal, Jul. 26, 1965, vol. 43.

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