US 11,807,815 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 Feb. 16, 2022, as Appl. No. 17/672,981.
Prior Publication US 2023/0257661 A1, Aug. 17, 2023
Int. Cl. C10G 1/10 (2006.01); C10G 1/00 (2006.01); C10G 67/02 (2006.01); B01J 19/24 (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)] 16 Claims
OG exemplary drawing
 
1. A method of producing pyrolysis products from a mixed plastics stream, the method comprising:
(a) conducting pyrolysis of a plastic feedstock to produce a stream of plastic pyrolysis oil;
(b) feeding the plastic pyrolysis oil to a first fractionator 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.;
(c) feeding the first distillate fraction to an aromatization unit comprising an aromatization reactor with an aromatization catalyst disposed therein to generate an aromatics rich stream; and
(d) passing the aromatics rich stream to an aromatics recovery complex 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.