US 11,939,538 B2
Integrated process for pygas upgrading to BTX
Noor Nasser Al-Mana, Dhahran (SA); Zhonglin Zhang, Dhahran (SA); Omer Refa Koseoglu, Dhahran (SA); and Sohel Shaikh, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Feb. 28, 2023, as Appl. No. 18/115,239.
Application 18/115,239 is a continuation of application No. 17/567,466, filed on Jan. 3, 2022.
Prior Publication US 2023/0212465 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 65/08 (2006.01); C10G 45/68 (2006.01); C10G 69/12 (2006.01); C10G 45/40 (2006.01); C10G 45/54 (2006.01); C10G 45/64 (2006.01)
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
OG exemplary drawing
 
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.