The regeneration of coked fixed-bed catalytic reactors has been
studied experimentally. Different
types of coke distribution have been artificially created in order to
study their influence upon
the temperatures reached during regeneration. The effect of the
oxygen concentration in the
reactor feed and the total gas feedrate have also been studied. In
addition, a study has been
carried out of different coke pretreatments with the aim of eliminating
part of the hydrogen-rich coke fractions prior to regeneration, thereby reducing temperature
increases during the
subsequent regeneration process. A new parameter, the
Thermal Aging Index, has been
proposed, as a means to quantify the impact that different regeneration
procedures may have
on a catalyst.
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