Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1984-02-16
1985-07-02
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423166, C01B 1700
Patent
active
045267642
ABSTRACT:
A scrubber is provided with a grate in its sump through which oxygen is introduced to separate the oxidation zone above this grate from a reaction zone below the grate, a calcium containing additive being introduced into this reaction zone. Flue gas to be desulfurized is passed through a washing zone above the sump and there contacted with normally circulating scrubbing liquid containing the additive to absorb sulfur dioxide and sulfur trioxide. The sulfur dioxide is oxidized to sulfur trioxide and the additive induces precipitation of calcium sulfate in the sump. After a prolonged standstill, settled solids in the sump are induced into movement by drawing a portion of the sump liquid from an upper part thereof and injecting it into a lower part of the sump.
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patent: 4047891 (1977-09-01), Schuetz
patent: 4102303 (1978-07-01), Cordier et al.
patent: 4366132 (1982-12-01), Holter et al.
patent: 4427553 (1984-01-01), Fore
patent: 4431608 (1984-02-01), Katagiri et al.
Dubno Herbert
Gottfried Bischoff Bau kompl. Gasreinigungs -und Wasserruckkuhla
Heller Gregory A.
Ross Karl F.
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