Method and apparatus for removing sulfur dioxide from gas stream

Details Method and apparatus for removing sulfur dioxide from gas stream Method and apparatus for removing sulfur dioxide from gas stream

1994-08-15

1995-07-18

McMahon, Timothy M.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

2611191, 261126, 366102, 366245, 366292, 366295, 422176, B01D 5318

Patent

active

054339251

ABSTRACT:
A process and apparatus for removing SO.sub.2 from low-volume gas streams containing high concentrations of SO.sub.2 includes a tank scrubber containing an aqueous SO.sub.2 absorbent and an impeller. The tank scrubber has an unpartitioned vessel. The impeller includes a vertical rotating shaft having an upper and lower impeller. The lower impeller serves to agitate the SO.sub.2 absorbent. The upper impeller includes a shroud thereby directing the absorbent and gas outwardly toward the wall of the scrubber. The gas is injected into the absorbent at a point below the shrouded impeller. The shroud prevents gas bypass and thereby promotes gas-liquid mixing and, consequently, markedly improves SO.sub.2 removal efficiency.

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