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DKL Engineering, Inc.
Handbook of Sulphuric Acid Manufacturing
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Contact Section -
Catalysts
- SMART CATALYST
January 18, 2021
Introduction Catalyst Types SC38 SC48 SC69 Dust Protection |
Associated Links |
SC69
SC69 is designed specifically for the final pass(es) of double absorption plants. In the lean SO2 gas environment after the inter-pass absorption tower, the unique SC69 formulation offers unmatched high activity throughout the entire operating temperature range. This affords existing plants the opportunity to greatly reduce SO2 emissions and/or increase production rates. For new or revamped plants, SO2 emissions of under 50 ppm are possible. Using cesium as a promoter, SC69’s extremely low ignition or “strike” temperature will significantly reduce pre-heat time and improve start-up performance. SC69 is manufactured in a unique 9 mm Daisy-shape. The high surface area contributes to the high activity in this gas environment and the high void-fraction ensures a low pressure drop and good dust tolerance.Dust Protection
25 mm Daisy – dust protection catalyst for
catalyst beds suffering from rapid pressure drop increase due to dust in
the feed gas, a top layer of Smart Catalyst 25 mm Daisy-shape catalyst
can provide a cost effective remedy. The extra void fraction and a lower
specific surface area allow a significantly higher capacity for dust,
distributing it throughout a larger volume of the catalyst bed. The
result is a lower rate of pressure drop increase providing improved
energy efficiency and longer intervals between catalyst screenings.
Benefits
- 30-50% longer on-stream time compared to existing ring shaped dust
protection catalysts
- 100% longer on-stream time compared to 12 mm Daisy
- maintenance cost savings due to less frequent catalyst screening
- energy cost savings due to lower plant pressure drop
- production increase due to longer time at maximum rate before pressure
drop forces production delay