Patent ID: 11879103
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 14:
15. A method for producing aromatic compounds from pyrolysis gasoline comprising olefinic hydrocarbons, paraffinic hydrocarbons, and aromatic hydrocarbons, the method comprising:
processing the pyrolysis gasoline in an aromatics recovery complex, thereby producing a stream comprising the paraffinic hydrocarbons, and one or more streams comprising benzene, toluene, and xylenes;
aromatizing the stream comprising the paraffinic hydrocarbons in an aromatization unit, thereby converting the stream comprising the paraffinic hydrocarbons to a first stream comprising benzene-toluene-xylenes (BTX);
hydrotreating the first stream comprising BTX in a selective hydrotreatment unit, thereby producing a de-olefinated stream comprising BTX;
processing the de-olefinated stream comprising BTX in the aromatics recovery complex,
thereby producing the aromatic compounds from the pyrolysis gasoline, the aromatic compounds comprising benzene, toluene, xylenes, and C9-C10 aromatic compounds;
sending the toluene and the C9-C10 aromatic compounds to a hydrodealkylation-transalkylation unit, thereby producing a second stream comprising BTX, the second stream comprising BTX having a greater amount of benzene and xylenes than the first stream comprising BTX; and
processing the second stream comprising BTX in the aromatics recovery complex, thereby producing one or more product streams, each of the one or more product streams comprising one or more of benzene, toluene, xylenes, and C9-C10 aromatic compounds.