The present invention provides a process for making an olefin product from
an oxygenate-containing feedstock comprising:a) contacting the feedstock
in a reaction zone with catalyst particles comprising a molecular sieve
containing acid sites and having an average coke loading of 1 to 10
carbon atoms per acid site of said molecular sieve, under conditions
effective to convert the feedstock into an olefin product stream and to
provide unregenerated catalyst particles,b) removing a portion of said
catalyst particles from said reaction zone and contacting said portion
with a regeneration medium in a regeneration zone under conditions
effective to obtain regenerated catalyst particles which have an average
coke loading of no greater than 10 carbon atoms per acid site of said
molecular sieve, andc) introducing said regenerated catalyst particles
into said reaction zone to provide a catalyst mixture of unregenerated
catalyst particles and regenerated catalyst particles, in an amount
sufficient to provide an average coke loading on said catalyst mixture in
an amount ranging from 1 to 10 carbon atoms per acid site of said
molecular sieve.