Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1974-12-19
1977-01-25
Vertiz, Oscar R.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
423242, D21C 1112, D21C 1114, C01B 1700
Patent
active
040049663
ABSTRACT:
A method of absorbing SO.sub.2 by use of an absorbing medium containing ammonia compounds is described. In a process wherein sulfur bearing constituents are combusted, SO.sub.2 bearing flue gases are generated. Having been cooled, the flue gases are contacted in a multi-stage absorption system by aqueous absorbents comprised of ammonium compounds which are maintained so that SO.sub.2 is removed from the flue gas and the formation of the ammonium sulfite fume is inhibited.
REFERENCES:
patent: 2161055 (1939-06-01), Johnstone et al.
patent: 2233841 (1941-03-01), Lepsoe
patent: 2676090 (1954-04-01), Johnstone
patent: 3773472 (1973-11-01), Hausberg et al.
patent: 3843789 (1974-10-01), Spector et al.
Pulp & Paper Magazine of Canada, 1952 pp. 105-112.
Matty Robert E.
Strom Stephen S.
Fazzari Vincent M.
Heller Gregory A.
Maguire Joseph M.
The Babcock & Wilcox Company
Vertiz Oscar R.
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