A-988 TiO2-based sulfation resistant sulfur recove

A-988 is a newly developed sulfur recovery catalyst whose main active component is TiO2, and several patented agents are added into it to further richen its function. A-988 has reached the world advanced level in physic-chemical properties as well as catalytic activity; meantime, its average crushing strength and stability, heat stability, hydro-heat stability and abrasion are superior to those of the imported catalysts. The commercial test result has proved that the Claus activity and CS2 hydrolysis of A-988 are obviously superior to the imported catalysts. Therefore, A-988 has achieved SINOPEC 2nd Prize of Science and Technology Progress. The main advantages of A-988 are as follows: Owing to high activity of COS and CS2 hydrolysis and Claus conversion almost reaching the thermodynamic equilibrium level, therefore A-988 is one of the best sulfur recovery catalysts. It is not sensitive to the trace O2 in acid gas and there is no sulfation poisoning to it. Because A-988 only needs 3s of contact time and can be used in the 1200h-1 GHSV, the reactor volume can be reduced and at the condition of same contact time, the acid gas loading can be improved greatly. A-988 is especially applicable to cope with lean acid gas and Claus tail gas. Based on above high properties of A-988, we recommend using A-988 in the 1st converter to promote COS and CS2 to be hydrolyzed completely, and to use it in the 2nd and 3rd converters to improve Claus conversion. the main technical index: Appearance Φ(3 5)×(5 25)mm white extrudate Specific surface area, m2/g >100 Average crushing strength, N/granule >120 Bulk density, g/ml 0.80 1.0 Pore volume, ml/g ≥0.20 abration,%(m/m) <1.0