BR-108A sulfur recovery catalyst is a highly active Claus and O2-removal protective bifunctional catalyst. The catalyst is mainly composed of a modified activated alumina carrier loaded with an appropriate amount of active metal salts. When there is O2-removal in the gas flow, O2 can be catalytically converted into SO2 (the conversion mechanism is as follows):
MSO4+2H2S→MS2+SO2+2H2O
MS2+O2→MSO4+SO2
Reduce the trace amount of O2 remaining in the Claus process gas to less than 10ppm to avoid or protect the Al2O3-based catalyst from sulfation poisoning.
| Item | Indicators |
| Specifications | Φ4-6 |
| Appearance | Reddish-brown spheres |
| AL2O3（wt%） | 88% |
| Active ingredient（Fe2O3） | 4-6% |
| Bulk density （g/ cm3） | 0.70-0.80 |
| Strength （N/grain ≥） | 200 |
| wear and tear （%≤） | 0.1 |
| Specific surface area（㎡/g） | ≥280 |
| Pore （cm3/g） | 0.40-0.45 |
