Importance

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Abstract

An apparatus for wet process exhaust gas desulfurization including a spraying portion for spreading absorbent slurry including calcium compound, an absorbing tower for bringing the absorbent slurry sprayed from the spraying portion into contact with exhaust gas including sulfur oxides from opposite directions so as to absorb the sulfur oxides in the exhaust gas into the absorbent slurry, a slurry tank disposed below the absorbing tower for receiving the absorbent slurry from the absorbing tower, a plurality of stirrers for stirring each stirrer being an axial flow type agitator having a propeller, and circular system for circulating the absorbent slurry from the slurry tank to the spraying portion. The apparatus further includes a plurality of nozzles for feeding oxidizer gas including oxygen into the absorbent slurry from a backside of each propeller towards a periphery thereof uniformly with respect to a circumferential direction, thereby bubbling the oxidizer gas finely around each propeller.

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First Claim