US 12,441,942 B2
Treating and steam cracking a combination of plastic-derived oil and used lubricating oils to produce high-value chemicals
Nicolas Goyheneix, Riemst (BE); and Lara Galan-Sanchez, Eindhoven (NL)
Assigned to SABIC Global Technologies B.V., Bergen op Zoom (NL)
Appl. No. 17/593,976
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL)
PCT Filed May 6, 2020, PCT No. PCT/IB2020/054293
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/234679, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/851,520, filed on May 22, 2019.
Prior Publication US 2022/0177785 A1, Jun. 9, 2022
Int. Cl. C10G 69/06 (2006.01); C10G 7/06 (2006.01); C10G 9/36 (2006.01); C10G 21/20 (2006.01); C10G 21/22 (2006.01); C10G 55/04 (2006.01)
CPC C10G 9/36 (2013.01) [C10G 7/06 (2013.01); C10G 21/20 (2013.01); C10G 21/22 (2013.01); C10G 55/04 (2013.01); C10G 69/06 (2013.01); C10G 2300/1007 (2013.01); C10G 2300/1062 (2013.01); C10G 2400/20 (2013.01); C10G 2400/30 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of producing one or more olefins, the method comprising:
pyrolyzing a plastic material in a pyrolysis unit to form a plastic derived oil;
blending the plastic derived oil with a used lubricating oil to form a blended hydrocarbon feed;
separating the blended hydrocarbon feed to form (1) a light-end stream comprising primarily C1 to C8 hydrocarbons and (2) a heavy hydrocarbon feed;
hydroprocessing the light-end stream to produce a hydroprocessed light-end stream;
flowing the hydroprocessed light-end stream to a steam cracking unit;
processing the heavy hydrocarbon feed to produce a steam cracking feedstock; and
cracking (1) hydrocarbons of the steam cracking feedstock and (2) hydrocarbons of the light-end stream to produce one or more olefins;
wherein the processing of the heavy hydrocarbon feed comprises:
distilling the heavy hydrocarbon feed via vacuum distillation to produce a vacuum distillation residue and a vacuum distilled hydrocarbon stream;
processing the vacuum distilled hydrocarbon stream via liquid-liquid extraction to produce a poly-aromatics stream comprising primarily poly-aromatics and an intermediate stream comprising paraffinic, aromatic, and naphthenic hydrocarbons;
hydroprocessing the intermediate stream to produce the steam cracking feedstock; and
recycling the poly-aromatics stream and/or the vacuum distillation residue to the pyrolysis unit;
wherein a used lubricating oil is lubricating oil that has partially or completely lost its capability of reducing the friction, heat, and wear between mechanical components after a period of usage or that has accumulated contaminants after a period of usage;
wherein the hydroprocessing of the intermediate stream is performed at a pressure of 70 to 200 barg and at an increased pressure and/or increased temperature compared to the hydroprocessing of the light-end stream; and
wherein the pyrolizing is carried out at a temperature in a range of 100 to 500° C.