PROCESS AND APPARATUS FOR HYDROPROCESSING WITH TWO PRODUCT FRACTIONATORS

摘要

A process and apparatus are disclosed for recovering hydroprocessing effluent from a hydroprocessing unit utilizing a hot stripping column and a cold stripping column. A light fractionation column fractionates naphtha from kerosene predominantly from a cold stripped stream. A heavy fraction column fractionates diesel from unconverted oil predominantly present in a hot stripped stream. Only the hot hydroprocessing effluent is heated in a fired heater prior to entering the heavy fractionation column, resulting in substantial operating and capital savings.

主权项

1. A hydroprocessing process comprising:
hydroprocessing a hydrocarbon feed in a hydroprocessing reactor to provide a hydroprocessing effluent stream; stripping a hot hydroprocessing effluent stream in a hot stripping column to provide a hot stripped stream; stripping a cold hydroprocessing effluent stream in a cold stripping column to provide a cold stripped stream; fractionating said cold stripped stream in a light fractionation column; and fractionating said hot stripped stream in a heavy fractionation column.