Scrubbing of Fly-Ash Laden SO2 in Modified Multistage Bubble Column Scrubber

Abstract

The emission of SO2 from various chemical industries is associated with particulate (fly-ash), mostly concentrations of particulate laden sulfur dioxide in and around these plants overshoot the danger point. Prediction of fly-ash laden SO2 removal efficiency is very important for the selection of pollution control equipment. Experimental investigations were conducted on the scrubbing of fly-ash laden SO2 in the modified multistage bubble column scrubber using water. Experimental results show that almost zero penetration (100% removal efficiency) of fly-ash laden SO2 can be achieved in this system. A correlation was developed for predicting the percentage collection efficiency of sulfur dioxide in the presence of fly-ash. Experimental results agreed excellently with the correlation. Enhancement of SO2 collection due to the presence of fly-ash was also quantified.