US 12,359,135 B2
Circular economy for plastic waste to polypropylene and base oil via refinery hydrocracking unit
Hye-Kyung C. Timken, Albany, CA (US)
Assigned to Chevron U.S.A. Inc., San Ramon, CA (US)
Filed by Chevron U.S.A. Inc., San Ramon, CA (US)
Filed on Mar. 30, 2023, as Appl. No. 18/128,366.
Claims priority of provisional application 63/326,707, filed on Apr. 1, 2022.
Prior Publication US 2023/0313052 A1, Oct. 5, 2023
Int. Cl. C10G 1/00 (2006.01); C08F 10/06 (2006.01); C10G 45/72 (2006.01); C10G 47/34 (2006.01)
CPC C10G 47/34 (2013.01) [C08F 10/06 (2013.01); C10G 1/002 (2013.01); C10G 45/72 (2013.01); C10G 2300/1003 (2013.01); C10G 2300/4081 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01); C10G 2400/08 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A process for converting waste plastic into chemicals useful in preparing polypropylene, comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) preparing a liquid blend of petroleum and the selected plastic, with the blend comprising less than 20 wt. % of the selected plastic; and
(c) passing the blend to a hydrocracking unit in a refinery.