Spent pulping liquor recovery process

Details Spent pulping liquor recovery process Spent pulping liquor recovery process

1985-11-15

1988-01-12

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

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

162 301, 162 3011, 162 31, 162 47, 159 473, 423207, 423DIG3, D21C 1110, D21C 1112, D21C 1114

Patent

active

047189789

ABSTRACT:
A partially-oxidized spent pulping liquor is produced which is added to unoxidized strong spent pulping liquor prior, during, or subsequent to concentration to form a novel partially-oxidized, concentrated, high total solids spent pulping liquor. This novel, partially-oxidized, concentrated spent liquor is capable of being combusted in a spent liquor recovery furnace without the addition of auxiliary heating fuel with a resultant increase in the effective capacity of that furnace.

REFERENCES:
patent: 3714911 (1973-02-01), Pradt
patent: 3873414 (1975-03-01), Rocher et al.
patent: 4441959 (1984-04-01), Empie, Jr. et al.
Grace "The Impact of Black Liquor Oxidation on Total Energy"; vol. 60, No. 11, Nov. 1977 Tappl; pp. 132-135.
Grace "Increasing Recovery Boiler Throughput"; Tappl, vol. 67, No. 11, pp. 52-58.

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