Abstract: Biofuel compositions obtained by the simultaneous hydroprocessing of at least two distinct hydroprocessing feedstocks, either or both of which are derived from biomass, are disclosed. The co-processing of these feedstocks can result in an upgraded product having suitable characteristics, in terms of composition (e.g., quantities of compounds such as aromatic hydrocarbons, present in relatively large amounts) and in terms of quality (e.g., quantities of compounds such as oxygenates, present in relatively small amounts) for use as a hydroprocessed biofuel such as hydroprocessed aviation biofuel.

Abstract: A process for saturating benzene in a light paraffin isomerization process can accommodate varying quantities of benzene through the incorporation of progressive steps that control temperatures in the isomerization zone while performing a majority of the saturation within an immediately upstream benzene saturation zone. The process is suited for saturating benzene to very low levels while feedstream concentrations of benzenes may vary from 2 to 25 wt % throughout a given period of operation. The process can accommodate rapid swings in benzene concentration that may occur on a daily basis. The invention is particularly suited for the use of a sulfated zirconia catalyst that allows the utilization of existing reactor vessels in an isomerization process.

Abstract: Hydrocarbons are alkylated using slowly moving cylindrical beds of solid catalyst in a process featuring a cooling zone within the reaction zone and a moving bed catalyst regeneration zone. The catalyst passes downward through both zones, which may be stacked upon one another. The reaction zone is operated at liquid-phase conditions, and the catalyst is periodically subjected to a regeneration procedure employing a hydrogen-containing stream. Direct heat exchange within the reaction zone removes the heat of the reaction.

Abstract: The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from a crude oxygenate feedstock. The crude oxygenate feedstock comprises an alcohol, and water. The process comprises passing the crude oxygenate feedstock to catalyst to a distillation with reaction zone to convert the alcohol to an ether and produce an ether product having a reduced water relative to the crude oxygenate feedstock and a first water stream. The ether product is passed to an oxygenate conversion zone containing a metal aluminosilicate catalyst to produce a light olefin stream.

Abstract: A catalytic reforming process uses a riser reactor with multiple catalyst injection points to obtain high aromatics yields from a naphtha feedstock. Product from the riser reactor typically is discharged into a fluidized-reforming reactor, in which the reforming reaction is completed and catalyst is separated from hydrogen and hydrocarbons. Hydrocarbons from the reactor are separated to recover an aromatized product. Catalyst is regenerated to remove coke and reduced for reuse in the reforming process.

Abstract: A process for saturating benzene in a light paraffin isomerization process can accommodate varying quantities of benzene through the incorporation of progressive steps that control temperatures in the isomerization zone while performing a majority of the saturation within an immediately upstream benzene saturation zone. The process is suited for saturating benzene to very low levels while feedstream concentrations of benzenes may vary from 2 to 25 wt % throughout a given period of operation. The process can accommodate rapid swings in benzene concentration that may occur on a daily basis. The invention is particularly suited for the use of a sulfated zirconia catalyst that allows the utilization of existing reactor vessels in an isomerization process.

Abstract: Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins present in the process. Two separate modes of regeneration are performed simultaneously on different portions of the catalyst: a partial liquid-phase hydrogenative regeneration at reaction conditions and a high temperature (complete) liquid-phase hydrogenative regeneration.

Abstract: Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins present in the process. Two separate modes of regeneration are performed simultaneously: a mild liquid-phase washing and a vapor-phase hot hydrogen stripping operation.