US 12,152,200 B2
Method and system for producing refined hydrocarbons from waste plastics
Sang Hwan Jo, Daejeon (KR); Soo Kil Kang, Daejeon (KR); Yong Woon Kim, Daejeon (KR); Min Gyoo Park, Daejeon (KR); Min Woo Shin, Daejeon (KR); and Jin Seong Jang, Daejeon (KR)
Assigned to SK INNOVATION CO., LTD., Seoul (KR); and SK GEO CENTRIC CO., LTD., Seoul (KR)
Filed by SK INNOVATION CO., LTD., Seoul (KR); and SK GEO CENTRIC CO., LTD., Seoul (KR)
Filed on Jan. 15, 2024, as Appl. No. 18/412,599.
Claims priority of application No. 10-2023-0051631 (KR), filed on Apr. 19, 2023; and application No. 10-2023-0126307 (KR), filed on Sep. 21, 2023.
Prior Publication US 2024/0352324 A1, Oct. 24, 2024
Int. Cl. C10G 1/10 (2006.01); C10G 7/00 (2006.01)
CPC C10G 1/10 (2013.01) [C10G 7/00 (2013.01); C10G 2300/1003 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for producing refined hydrocarbons from waste plastics, the method comprising:
a pretreatment process of pretreating waste plastics;
a pyrolysis process of producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor;
a lightening process of producing pyrolysis oil by introducing the pyrolysis gas into a hot filter; and
a distillation process of distilling the pyrolysis oil to obtain refined hydrocarbons,
wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor.