The Formation of SO2 and Emission Reduction Solutions in the Preparation of a Hydrogenation Catalyst Support

The key reason for SO2formation during the production of a residue hydrogenation catalyst support was identi?ed and subsequent emission reduction solutions were then investigated and veri?ed systematically.The results demonstrated that carbon-containing organic materials,including sesbania powder and cellulose,did not completely decompose over the temperature range of 350-600℃during the heating stage of the calcination process,but rather underwent a condensation reaction within the same temperature range to form carbon-containing species with a lower ratio of hydrogen to carbon and a higher condensation degree,which promoted the decomposition of sulfate to form SO2.Systematic experimental work revealed that three different measures,i.e.,applying the staged calcination method,reducing the heating rate,and increasing the air?ow rate,during the calcination process could all achieve the effect of reducing SO2emissions.