Abstract:
This invention relates to a novel integrated hydroconversion process for converting heavy atmospheric or vacuum residue feeds and also converting and reducing impurities in the vacuum gas oil liquid product. This is accomplished by utilizing two residue hydroconversion reaction stages, two vapor-liquid separators, and at least two additional distillate ebullated-bed hydrocracking/hydrotreating reaction stages to provide a high conversion rate of the residue feedstocks.
Abstract:
This invention teaches an improved ebullated-bed reactor hydrotreating/hydrocracking process for treating heavy vacuum gas oil (HVGO) and deasphalted oil (DAO) feeds. The reactor is designed to operate at minimum catalyst bed expansion so as to maximize reactor kinetics and approach plug flow reactor process performance. Further, the invention allows for the production of a uniform product quality and production output that does not substantially vary with time.
Abstract:
A process for catalytic multi-stage hydrogenation of heavy carbonaceous feedstocks using catalytic ebullated bed reactors is operated at selected flow and operating conditions so as to provide improved reactor operations and produce increased yield of lower boiling hydrocarbon liquid and gas products. The disclosed process advantageously takes advantage of an external gas/liquid separation unit associated with the first stage reactor to allow for a more efficient and effective catalytic hydrocracking process. The more efficient process is primarily a result of the increased catalyst loading and lower gas hold-up in the ebullated reactors.