Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1993-11-01
1995-08-08
Jones, W. Gary
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
162 29, 162239, 422185, 423551, D21C 1104
Patent
active
054395569
ABSTRACT:
A method of producing oxidized white liquor from white liquor in which sodium sulfide is oxidized to sodium sulfate. In accordance with the method, an oxygen containing gas is contacted with the white liquor at a temperature of at least 110.degree. C. and such that the total pressure of oxygen and water vapor is no less than 9.2 atmospheres during the contacting.
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Kirschner Mark J.
Potthoff Richard W.
Sethna Rustam H.
Cassett Larry R.
Jones W. Gary
Nguyen Dean Tan
Rosenblum David M.
The BOC Group Inc.
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