KC-401 catalyst is defined as a sulfur recovery catalyst for the Claus reaction with the carrier of Al₂O₃. It is featured for its uniform-size particles, superior abrasion resistance, high activity and great stability. KC-401 is one of the best sulfur recovery catalyst based upon its overall performances and technical indicators.

Technical Features:

  - High mechanical strength and strength stability.

  - High catalytic activity.

  - Excellent selectivity and active stability.

  - High operating flexibility, with the adaptive capacity for high airspeed.

  - Long working life.

Physical and Chemical Properties:

Direction for Use: 

KC-401 catalyst can be loaded into any Claus reactor to be used either on its own or along with other catalysts. A few rules should be followed during the operation:

1)     The optimum H₂S/SO₂ ratio should be controlled to be 2:1; this is the key to achieve the highest sulfur recovery rate.

2)     The temperature of any point of the entire bed cannot be lower than the dew point of sulfur. Therefore, the minimum operating temperature required for the first reactor is 220℃ and 210℃ for the second reactor.

3)     The maximum operating temperature of the entire bed is 450℃.