SO₂-removal using ammonia solution in a packed column

Abstract

The effect of variables on efficiency of SO₂ removal from a simulated waste gas by use of ammonia solution was studied. The variables were gas, feed solution and recirculation flow rate, SO₂ concentration in the gas phase, NH₃ concentration in the ammonia solution, and pH in scrubber effluent solutions.

The scrubber was 3“ — OD methyl metacrylate column packed with 1 •4” — plastic Rasching rings in 90 cm packed height.

Solution analysis was performed by Palmrose method and pH meter. The following empirical equations were obtained by regression analysis; EFF = 33.52 G^0.0552 F^0.118 R^0.772 EFF = 64.10 S^0.143 N^0.0153 k_G = 3.51 x 10^-6 G^1.160 L_0.647