Process for converting FCC naphtha into aromatics

摘要

A method and apparatus for processing hydrocarbons are described. The method includes fractionating a hydrocarbon stream to form at least two fractions. The first fraction is reformed to form a reformate stream, and the reformate stream is introduced into an aromatics processing zone to produce aromatic products. At least a portion of the second fraction is cracked in a fluid catalytic cracking unit. A selectively hydrogenated light naphtha stream is formed by separating the cracked hydrocarbon stream into at least two streams and selectively hydrogenating the light naphtha stream, or selectively hydrogenating the cracked hydrocarbon stream and separating the hydrogenated cracked hydrocarbon stream into at least two streams. Aromatics are extracted from the selectively hydrogenated light naphtha stream forming an extract stream and a raffinate stream. The extract stream is hydrotreated, sent to the aromatics processing zone to produce additional aromatic products.

主权项

1. A method for processing hydrocarbons comprising:
fractionating a hydrocarbon stream in a fractionation unit to form at least two fractions including a first fraction and a second fraction; reforming the first fraction in a reforming unit to form a reformate stream; introducing the reformate stream into an aromatics processing zone to produce select aromatic products; cracking at least a portion of the second fraction in a fluid catalytic cracking unit to form a cracked hydrocarbon stream; forming a selectively hydrogenated light naphtha stream by separating the cracked hydrocarbon stream into at least two streams including a light naphtha stream and a heavy naphtha stream and selectively hydrogenating the light naphtha stream, or selectively hydrogenating the cracked hydrocarbon stream and separating the hydrogenated cracked hydrocarbon stream into at least two streams including a light naphtha stream and a heavy naphtha stream; extracting aromatics from the selectively hydrogenated light naphtha stream in an aromatic extraction unit to form an extract stream and a raffinate stream containing olefins; and introducing the extract stream into the aromatics processing zone to produce additional aromatic products.