Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1989-06-06
1990-12-04
Heller, Gregory A.
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423242, C01B 1769, C01B 1700
Patent
active
049752642
ABSTRACT:
A process and system for purifying flue gases containing sulfur dioxide therein by scrubbing the flue gas with sulfuric acid and subsequently removing sulfur dioxide by moist activated carbon within a catalytic oxidation reactor. An improvement is achieved by the inclusion of a heat exchanger with tow flow paths; one connected to direct flow of clean gas saturated with water vapor from the catalytic oxidation reactor and the other flow path connected between the scrubber and the catalytic oxidation reactor permitting scrubbed flute gas to pass through. The scrubbed flue gas has a higher temperature than the clean gas, and the heat exchange results in the cooling of the scrubbed gas to the process temperature for the catalytic oxidation reaction and the warming of the clean gas above its dew point to facilitate rising of the clean gas in a chimney or like structure.
REFERENCES:
patent: 3294487 (1966-12-01), Pauling
patent: 3318662 (1967-05-01), Pauling
patent: 3950493 (1976-04-01), Dorr et al.
patent: 4842835 (1989-06-01), Dorr et al.
W/B Wasser, Luft Und Betrieb, 1/2/85, "Entschwefelung und Entstickung mit Liungstrom-Warmetauscher", pp. 48 and 50.
Staub, Reinhaltung der Luft, Band 47 (1987) Jul./Aug., p. IV.
Gesthuysen & von Rohr
Heller Gregory A.
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