Application: To convert heavy vacuum gasoil (VGO) and other low-cost cracked and extracted feedstocks into high-value, high-quality products, such as low-sulfur diesel, jet fuel, high-octane light gasoline and reformer feed via the Shell Hydrocracking Process. Unconverted or recycle oil are prime feeds for secondary processing in fluid catalytic cracking units (FCCUs), lube base oil plants and ethylene crackers.
Description: Heavy feed hydrocarbons are preheated with reactor effluent (1). Fresh hydrogen is combined with recycle gas from the cold highpressure separator, preheated with reactor effluent, and then heated in a single-phase furnace. Reactants pass via trickle flow through multi-bed reactor(s) containing proprietary pre-treat, cracking and post-treat catalysts (2). Interbed ultra-flat quench internals and high-dispersion nozzle trays combine excellent quench, mixing and liquid flow distribution at the top of each catalyst bed while helps maximize reactor volume utilization. After cooling by feed streams, reactor effluent enters a separator system. Hot effluent is routed to fractionation (3).
Two-stage, series flow and single-stage unit design configurations are available, capable of converting a wide range of heavy feedstocks, especially heavy coker gasoils and deasphalted oils directly into clean fuels. The catalyst systems are carefully tailored for maximum yield of the desired product slate at an optimum catalyst cycle length.
Supplier: Shell Global Solutions International B.V.