same amount of the ambient oxygen can be used to cool the catalyst and dry the catalyst while the flow of reheated ambient oxygen is lowered this would be desirable if for example there is low coke amount on the catalyst yet the same temperature in the chlorination zone 208 is desired it is also contemplated to measure the temperature of the chlorination zone 208 and control at least one operating parameter of the oxygen reheating zone 226 based upon the temperature such a parameter may be flow operating temperature both or another parameter additional zones may also be present in the regeneration zone 202 including one or more zones discussed elsewhere herein the catalyst may be recycled back to the reaction zone 200 and re used in the process again it is also contemplated that this aspect of the invention is combined with at least one additional aspect of the present invention described herein turning to fig3 as shown in this aspect of the present invention a process is also directed to the regeneration of catalyst used in a reaction zone 300 the catalyst is once again passed via traditional transportation devices and means to a regeneration zone 302 which may include one or more regeneration towers 304 the regeneration zone 302 includes at least a burn zone 306 a catalyst heating zone 308 and chlorination zone 310 again in the burn zone 306 coke present on the catalyst is removed via combustion while this temperature is sufficiently high to burn most of the catalyst off it is possible that some heavily coked catalyst may pass from the burn zone 306 to the catalyst heating zone 308 in the catalyst heating zone 308 the catalyst typically reaches a temperature so that it may.