CPC C10G 65/08 (2013.01) [C10G 45/68 (2013.01); C10G 69/123 (2013.01); C10G 45/40 (2013.01); C10G 45/54 (2013.01); C10G 45/64 (2013.01); C10G 2300/1044 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/30 (2013.01)] | 20 Claims |
1. A method for producing aromatic compounds from pyrolysis gasoline comprising C5-C6 non-aromatic hydrocarbons, the method comprising:
aromatizing the pyrolysis gasoline in an aromatization unit, thereby converting the C5-C6 non-aromatic 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, wherein the first stream comprising BTX is sent directly from a reactor of the aromatization unit to the selective hydrotreatment unit;
hydrodealkylating and transalkylating the de-olefinated stream comprising BTX in a hydrodealkylation-transalkylation unit comprising hydrogen, 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 an aromatics recovery complex, thereby producing the aromatic compounds from the pyrolysis gasoline, the aromatic compounds comprising benzene, toluene, and xylenes.
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