Catalytic partial oxidation of methane to syngas in a fixed-bed reactor with an O2-distributor:The axial temperature profile and species profile study

摘要

Catalytic partial oxidation of methane(CPOM)to syngas has been investigated in a fixed-bed reactor with an O2-distributor(FR-OD).The axial temperature profile and species profile along the Ni or Rh-based catalyst bed have been measured at different conditions.As the O2 was distributed radially into the catalyst bed through several rows of holes arranged at the special zone of the OD,a microenvironment maintaining a low O2/CH4 ratio(0.10-0.22)was provided in the catalyst bed.The hotspot phenomena appeared at the entrance of the catalyst bed have been effectively controlled.A more uniform temperature profile along the catalyst bed has been given,which is beneficial to the stability of catalyst and the safety of reactor operation.