Lo-NOx Countercurrent Regeneration

Air Grid and Spent Catalyst Distributor configuration Enlarge Photo

Air Grid and Spent Catalyst Distributor configuration

The FCC regenerator can be configured to promote low NOx emissions with KBR's Low NOx counter-current regeneration technology consisting of a patented self aerated spent catalyst distributor and a pipe air grid distributor. These counter-current regeneration features provide lower NOx emissions as well as uniform combustion in the catalyst bed, minimum flue gas afterburning, and less catalyst deactivation. Commercial data from over a dozen applications show that NOx emissions are 60-80% lower than in other types of FCC regenerator. Significant features of the counter current regeneration technology are:

  • Counter-current spent catalyst distributor
  • Pipe grid air distributor
REGENMAX™ Enlarge Photo

REGENMAX™: Lower particulate emissions, reduced cyclone wear

An additional improvement to FCC regenerator emissions can be achieved with KBR's REGENMAX™ technology, which further enhances air to spent catalyst contact to significantly reduce entrainment, thereby lowering particulate emissions and reduces cyclone wear. Catalyst back mixing is also minimized with REGENMAX™ thus allowing for clean catalyst burning under partial CO combustion conditions.

For more information on REGENMAX™ technology, please view the Lo-NOx brochure or visit our KBR FCC publications.