THREE-PHASE HYDROPROCESSING WITHOUT A RECYCLE GAS COMPRESSOR

摘要

In general, methods of hydroprocessing a hydrocarbonaceous feed stock (12) are provided that do not use a costly recycle gas compressor, but are still able to use the more efficient reaction systems provided in a substantially three-phase hydroprocessing zone (36). The method combines a substantially liquid-phase hydroprocessing zone (20) with the substantially three-phase hydroprocessing zone (36) in a manner so that the hydrogen requirements for both reaction zones (20, 36) can be provided from an external source thereto without the use of a hydrogen recycle or recycle gas compressor to the substantially three-phase reaction zone (36).