US 11,746,299 B1
Methods and systems for upgrading mixed pyrolysis oil to light aromatics over mixed metal oxide catalysts
Miao Sun, Dhahran (SA); Sohel K Shaikh, Dhahran (SA); Wojciech Andrzej Supronowicz, Riyadh (SA); Chandrasekar Subramani, Al Jubail (SA); and Eman Z Albaher, Qatif (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA); and SABIC Global Technology B.V., PX Bergen op Zoom (NL)
Filed by Saudi Arabian Oil Company, Dhahran (SA); and SABIC Global Technologies B.V., PX Bergen op Zoom (NL)
Filed on Jul. 11, 2022, as Appl. No. 17/861,543.
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 47/04 (2006.01); B01J 19/24 (2006.01); B01J 23/00 (2006.01); B01J 23/83 (2006.01); C10G 69/06 (2006.01)
CPC C10G 47/04 (2013.01) [B01J 19/24 (2013.01); B01J 23/002 (2013.01); B01J 23/83 (2013.01); C10G 69/06 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/706 (2013.01); C10G 2400/30 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for upgrading mixed pyrolysis oil, the method comprising;
contacting the mixed pyrolysis oil with hydrogen in the presence of a mixed metal oxide catalyst at reaction conditions to produce a reaction effluent comprising light aromatic compounds, where:
the mixed metal oxide catalyst comprises:
from 60 wt. % to 95 wt. % iron oxide,
from 1 wt. % to 20 wt. % zirconium oxide,
from 0.1 wt. % to 10 wt. % cerium oxide, and
from 1 wt. % to 20 wt. % aluminum oxide,
 where the weight percentages are based on the total weight of the mixed metal oxide catalyst
the mixed pyrolysis oil is formed from light pyrolysis oil and heavy pyrolysis oil at a weight ratio of 10:90 to 40:60 with light pyrolysis oil representing a bottom stream of a gas steam cracker and heavy pyrolysis oil representing a bottom stream of a naphtha steam cracker;
the mixed pyrolysis oil comprises multi-ring aromatic compounds;
the mixed metal oxide catalyst comprises a plurality of catalyst particles and each of the plurality of catalyst particles comprises a plurality of metal oxides; and
contacting the mixed pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at the reaction conditions converts at least a portion of the multi-ring aromatic compounds in the mixed pyrolysis oil to the light aromatic compounds.