Processes for upgrading alkanes and alkyl aromatic hydrocarbons

A process for upgrading a hydrocarbon, comprising:

• (I) contacting a hydrocarbon-containing feed with fluidized catalyst particles comprising a Group 8-10 element disposed on a support within a conversion zone to effect one or more of dehydrogenation, dehydroaromatization, and dehydrocyclization of at least a portion of the hydrocarbon-containing teed to produce a conversion effluent comprising fluidized coked catalyst particles, one or more upgraded hydrocarbons, and molecular hydrogen, wherein:
• the hydrocarbon-containing feed comprises one or more of C2-C16 linear or branched alkanes, one or more of C4-C16 cyclic alkanes, one or more of C8-C16 alkyl aromatic hydrocarbons, or a mixture thereof;
• the hydrocarbon-containing feed and the fluidized catalyst particles are contacted at a temperature in a range from 300° C. to 900° C., for a time period in a range from 0.1 seconds to 2 minutes, under a hydrocarbon partial pressure of at least 20 kPa-absolute, wherein the hydrocarbon partial pressure is the total partial pressure of any C2-C16 linear or branched alkanes, any C4-C16 cyclic alkanes, and any C8-C16 alkyl aromatic hydrocarbons in the hydrocarbon-containing feed;
• the hydrocarbon-containing feed and the fluidized catalyst particles are contacted with one another in a presence of steam at an amount in a range from 0.1 vol % to 50 vol %, based on a total volume of any C2-C16 linear or branched alkanes, any C4-C16 cyclic alkanes, and any C8-C16 alkyl aromatic hydrocarbons in the hydrocarbon-containing feed;
• the fluidized catalyst particles comprise >0.025 wt % to 6 wt % of the Group 8-10 element based on the weight of the support;
• and;
• the one or more upgraded hydrocarbons comprise a dehydrogenated hydrocarbon, a dehydroaromatized hydrocarbon, a dehydrocylized hydrocarbon, or a mixture thereof;
• (II) obtaining from the conversion effluent a first gaseous stream rich in the one or more upgraded hydrocarbons and the molecular hydrogen and a first particle stream rich in the fluidized coked catalyst particles;
• (III) contacting at least a portion of the fluidized coked catalyst particles in the first particle stream with an oxidant in a combustion zone to effect combustion of at least a portion of the coke to produce a combustion effluent comprising fluidized regenerated catalyst particles lean in coke and a combustion gas;
• (IV) obtaining from the combustion effluent a second gaseous stream rich in the combustion gas and a second particle stream rich in the fluidized regenerated catalyst particles;
• (IVa) contacting at least a portion of the fluidized, regenerated catalyst particles with a reducing gas for a time period of at least 1 second to produce fluidized regenerated and reduced catalyst particles;
• and
• (V) contacting an additional quantity of the hydrocarbon-containing feed with the fluidized regenerated and reduced catalyst particles to produce additional conversion effluent comprising fluidized re-coked catalyst particles, additional one or more upgraded hydrocarbons, and additional molecular hydrogen, wherein a cycle time from the contacting the hydrocarbon-containing feed with the fluidized catalyst particles in step (I) to the contacting the additional quantity of the hydrocarbon-containing feed with the fluidized regenerated and reduced catalyst particles in step (V) is <30 minutes.