Process for providing aromatics from coal tar

摘要

A process for providing aromatics from a coal tar stream. A coal tar stream is provided, and the coal tar stream is fractionated into at least a naphtha range stream. The naphtha range stream is hydrotreated, and the hydrotreated naphtha range stream is separated to provide at least a naphthene rich stream. The naphthene rich stream is reformed or dehydrogenated to convert the naphthene. The dehydrogenated naphthene rich stream may be combined with a portion of a reformed crude oil hydrocarbon stream.

主权项

1. A process comprising:
providing a coal tar stream; fractionating the coal tar stream into at least a naphtha range stream containing hydrocarbons in the C5-C13 and aromatics; hydrotreating the naphtha range stream in the presence of a catalyst containing molybdenum, cobalt and nickel to remove contaminants including sulfur, nitrogen, mercury, metals, or oxygenates and to saturate aromatics to produce a hydrotreated stream rich in naphthenes; separating the hydrotreated naphtha stream to provide at least a naphthene rich stream in the C6-C10 range; and a light hydrocarbon stream comprising C5-hydrocarbons; provide a crude oil hydrocarbon stream containing naphthenes and paraffins from a crude oil feed; hydrotreating the crude oil hydrocarbon stream in the presence of catalyst containing at least one group VIII metal and at least one group VI metal under a condition less severe than the condition of hydrotreating of the naphtha range stream to produce a hydrotreated crude oil hydrocarbon stream; combining the naphthene rich stream with the hydrotreated crude oil hydrocarbon stream to form a combined stream; and reforming the combined stream to convert the naphthenes to aromatics and provide an aromatic stream.