LONG-TERM IMPLEMENTATION METHOD OF A CONTINUOUSLY IMPLEMENTED PARTIAL HETEROGENEOUS CATALYTIC DEHYDROGENATION OF A TO-BE-DEHYDROGENATED HYDROCARBON

PROBLEM TO BE SOLVED: To provide a long-term implementation method of a continuously implemented partial heterogeneous catalytic dehydrogenation of a to-be-dehydrogenated hydrocarbon.SOLUTION: A reactive gas mixture flow including a to-be-dehydrogenated hydrocarbon of a starting molar quantity HC is transmitted through a total catalyst bed including a dehydrogenation catalyst at a total sum M, and in a case where the implementation period proliferates, the deactivation of the total catalyst bed is attenuated by decreasing the conversion contribution of the first of three zones of the dehydrogenation catalyst of the total sum M along the fluidizing direction thereof, by increasing the conversion contribution of the last of the three zones of the dehydrogenation catalyst of the total sum M along the fluidizing direction thereof, and by maximizing the conversion contribution of the second of the three zones of the dehydrogenation catalyst of the total sum M along the fluidizing direction thereof.