Calcination of fluid coke utilizing shot

Claim 1

A PROCESS FOR THE CALCINATION OF COKE PARTICLES WHICH COMPRISES THE STEPS OF COUNTERCURRENTLY CONTACTING HEATED SEPARATE INERT, HEAT ABSORBING PARTICLES HAVING A HIGHER GAS SETTLING RATE THAN THE COKE PARTICLES WITH FLUIDIZED HOT COKE PARTICLES AT A LOWER TEMPERATURE IN A FIRST ZONE SO AS TO HEAT THE COKE PARTICLES TO A CALCINATION TEMPERATURE IN THE RANGE OF 1800* TO 3000* F. AND LOWER THE TEMPERATURE OF THE INERT HEATED PARTICLES, SEPARATING BY ELUTRIATION THE THUS HEATED COKE PARTICLES FROM THE INERT PARTICLES; PASSING THE ELUTRIATED COKE PARTICLES AT THE CALCINATION TEMPERATURE TO A CALCINATION ZONE; CALCINING THE COKE PARTICLES; COUNTERCURRENTLY CONTACTING THE INERT PARTICLES SEPARATED FROM THE FIRST ZONE IN A SECOND ZONE WITH FLUIDIZED CALCINED COKE PARTICLES WITHDRAWN AT A HIGHER TEMPERATURE FROM THE CALCINING ZONE SO AS TO COOL THE COKE AND RAISE THE TEMPERATURE OF THE INERT PARTICLES, ADDITIONALLY HEATING THE INERT PARTICLES BY COMBUSTION OF AN EXTRANEOUS FUEL WITH AN OXYGEN-CONTAINING GAS AND RETURNING THE THUS HEATED INERT PARTICLES TO THE FIRST ZONE TO HEAT THE COKE TO THE CALCINING TEMPERATURE.