Spherical, promoted catalyst used as a guard layer in Claus catalyst reactors to reduce the oxygen content of the reactor inlet process gas. Reducing the oxygen content of the reactor inlet process gas will decrease sulfate formation on the activated alumina Claus catalyst thereby preserving the catalytic activity of the activated alumina Claus catalyst. Maxcel 740 is typically installed as a top layer in the second and third Claus catalyst reactors, especially in units with direct/fired reheaters.
Typical Applications
Claus sulfur recovery units