PROCESS AND APPARATUS FOR RECOVERING HYDROTREATED HYDROCARBONS WITH TWO STRIPPERS

摘要

A process and apparatus is disclosed for recovering hydrotreating effluent from a hydrotreating unit utilizing a hot stripper and a cold stripper. Only the hot hydrotreating effluent is heated in a fired heater prior to product fractionation, resulting in substantial operating and capital savings. The cold stripped stream from the cold stripper bottoms line may be passed directly to a diesel pool when VGO is hydrotreated in the hydrotreating reactor bypassing the product fractionation column.

主权项

1. A hydrotreating process comprising:
hydrotreating a hydrocarbon feed stream in a hydrotreating reactor to provide hydrotreating effluent stream; separating said hydrotreating effluent stream into a cold separator stream and a hot separator stream. stripping said cold separator stream in a cold stripper column to provide a cold stripped stream; stripping said hot separator stream in a hot stripper column to provide a hot stripped stream; fractionating said hot stripped stream in a product fractionation column; and bypassing said cold stripped stream around said product fractionation column.