Pulp mill residual liquor recovery process

Details Pulp mill residual liquor recovery process Pulp mill residual liquor recovery process

1982-01-13

1984-03-27

Kratz, Peter F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

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

423207, D21C 1104

Patent

active

044392729

ABSTRACT:
A method and apparatus for recovering chemical from residual liquor from a pulping operation, said residual liquor containing inorganic and organic components, pyrolyzing a portion of the organics in the liquor to produce a reducing gas and residual solids containing said inorganic component and the remainder of said organics, said reducing gas containing sulfur compounds, oxidizing the remainder of the organics and recombining the sulfur contained in said reducing gas with said inorganic components to produce suflur compounds and reducing said sulfur compounds with said reducing gas.

REFERENCES:
patent: 3309262 (1967-03-01), Copeland et al.
patent: 3323858 (1967-06-01), Guerrieri
patent: 3761568 (1973-09-01), Brink et al.
patent: 4135968 (1979-01-01), Dehaas
patent: 4303469 (1981-12-01), Di Novo et al.

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