Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1979-04-24
1981-06-16
Spitzer, Robert H.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
55262, 55390, 55459R, 55474, 422176, 422233, 55 79, B01D 5308
Patent
active
042737508
ABSTRACT:
A method of desulfurizing boiler flue gas by intimate contact thereof with dry particles of a reactant or absorbent, such as hydrated lime, preferably with recirculation of the flue gas and entrained reactant or absorbent particles. An apparatus suitable for carrying out the method comprises an upstanding conduit defining a vertical gas flow path in communication with a source of SO.sub.2 --and particulate-laden flue gas, a conveyor for introducing a dry reactant or absorbent into the gas flow path, and a rotatable slinger mounted within the gas flow path for uniformly distributing the reactant or absorbent thereacross. In its preferred form, the apparatus includes recirculation means, preferably an eductor, mounted above the slinger for recirculation of gas and entrained reactant or absorbent within the gas flow path to enhance gas-solid contact time, a tangential gas inlet for creating vortical gas flow within the conduit, a gas expansion section at the conduit's discharge end and means for reversing the gas flow direction to enhance separation of particulates.
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Flick Francis S.
Hollett, Jr. Grant T.
Energy and Pollution Controls, Inc.
Spitzer Robert H.
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