Across sulfur burning, metallurgical, spent-acid, and wet-gas sulfuric acid plants, catalyst performance remains central to achieving low SO2 emissions, regulatory compliance, high production rates, and on-stream time. Plant operators monitor SO2 emissions and, as the catalyst degrades, adjust converter temperatures to maintain SO2 emissions within compliance limits. When temperature adjustments no longer work, plant capacity must be reduced. Thermal cycling is one of the operational factors that has a long-term impact on catalyst health and performance. The impact of thermal cycling is persistently underestimated.

Download