US 12,065,617 B2
Method of producing plastic pyrolysis products from a mixed plastics stream
Omer Refa Koseoglu, Dhahran (SA); and Yaming Jin, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Oct. 3, 2023, as Appl. No. 18/480,002.
Application 18/480,002 is a division of application No. 17/672,981, filed on Feb. 16, 2022, granted, now 11,807,815.
Prior Publication US 2024/0043751 A1, Feb. 8, 2024
Int. Cl. C10G 1/10 (2006.01); B01J 19/24 (2006.01); C10G 1/00 (2006.01); C10G 67/02 (2006.01)
CPC C10G 1/10 (2013.01) [B01J 19/245 (2013.01); C10G 1/002 (2013.01); C10G 67/02 (2013.01); B01J 2219/0004 (2013.01); C10G 2300/1003 (2013.01); C10G 2300/202 (2013.01); C10G 2300/205 (2013.01); C10G 2300/301 (2013.01); C10G 2300/308 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/30 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for processing mixed plastics into plastic pyrolysis products, the system comprising:
an inlet stream comprising mixed plastics;
a plastic pyrolysis unit, the plastic pyrolysis unit in fluid communication with the inlet stream, and operable to generate a stream of plastic pyrolysis oil from the inlet stream;
a first fractionator, the first fractionator in fluid communication with the stream of plastic pyrolysis oil to separate the plastic pyrolysis oil into a first distillate fraction comprising hydrocarbons boiling in the range of 36 to 370° C. and a residual heavy fraction comprising hydrocarbons boiling above 370° C.;
an aromatization unit in fluid communication with the first distillate fraction, the aromatization unit comprising an aromatization reactor with an aromatization catalyst disposed therein operable to generate an aromatic rich stream; and
an aromatic recovery complex in fluid communication with the aromatics rich stream, the aromatics recovery complex operable to separate the aromatics rich stream into a BTX fraction, a gasoline blending fraction, a gas fraction comprising hydrogen and C1-C4 hydrocarbons, and an aromatic bottoms fraction comprising hydrocarbons boiling above 180° C., where the BTX fraction consists of benzene, toluene and mixed xylenes and the gasoline blending fraction comprises aliphatic hydrocarbons with a boiling range from C5 hydrocarbon up to the aromatic bottoms fraction.