Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1973-03-12
1978-12-26
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
162 33, 162 65, D21C 1104
Patent
active
041315081
ABSTRACT:
A method is provided for recovery of white liquor and sodium hydroxide following the oxygen bleaching of pulp. A green liquor recovery system concentrates the spent black liquor, including spent liquor from the oxygen bleaching and spent black liquor, and then burns the spent liquor to form a smelt. This smelt is then dissolved in water to form the green liquor. The green liquor is divided into a first portion which is fed to a sodium hydroxide recovery system for recycling to the oxygen bleaching reactor and a second portion which is fed to a white liquor recovery system for recycling to the digester. A lime cycle is also provided to convert the resulting calcium carbonate (lime mud) to calcium oxide for recycling into the sodium hydroxide and white liquor recovery systems.
REFERENCES:
patent: 1742218 (1930-01-01), Richter
patent: 2862887 (1958-12-01), Boyer
patent: 3210235 (1965-10-01), Ferrigan, Jr. et al.
patent: 3258391 (1966-06-01), Cornell et al.
patent: 3269941 (1966-08-01), Compte et al.
patent: 3347739 (1967-10-01), Tomunson
patent: 3366534 (1968-01-01), Rapson
patent: 3617434 (1971-11-01), Nakafuri
patent: 3654070 (1972-04-01), Pradt et al.
patent: 3830688 (1974-08-01), Mannbro
Bashore S. Leon
Kamyr Inc.
Smith William F.
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