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Sulfur Dioxide: Its Chemistry as Related to Methods for Removing It from Waste Gases.

Authors
Haas-LA
Source
NTIS: PB 221 899 :19 pages
Link
NIOSHTIC No.
10009469
Abstract
The chemistry of current or potential so2 removal processes can be placed into four categories: (1) reduction, (2) liquefaction, (3) direct dissolution, and (4) oxidation. Methods that involve reducing so2 to elemental sulfur appear promising since this product can be easily handled, shipped, and stockpiled. Unfortunately, so2 cannot always be reduced directly when other oxidizing agents are present. Thermodynamic data indicate that some oxidizing reagents will also consume reductant at the reduction temperature. A two- stage process can be applied to waste gases that contain excessive quantities of oxygen, nitrogen oxides, and water vapor. The best sorbent for the first stage appears to be a nonalkali or nonalkaline earth medium since this medium more readily releases the so2 for reduction in the second stage.
Publication Date
19730101
Document Type
IH; Information Circular;
Fiscal Year
1973
NTIS Accession No.
PB-221899
NTIS Price
A03
Identifying No.
IC 8608
NIOSH Division
TCRC;
Source Name
NTIS: PB 221 899
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