US 12,084,621 B1
Method and system for producing refined hydrocarbons from waste plastic pyrolysis oil
Yong Woon Kim, Daejeon (KR); Seo Yeong Kang, Daejeon (KR); Soo Kil Kang, Daejeon (KR); Min Gyoo Park, Daejeon (KR); Young Moo Park, Daejeon (KR); Min Woo Shin, Daejeon (KR); Jae Hwan Lee, Daejeon (KR); Jin Seong Jang, Daejeon (KR); and Sang Hwan Jo, 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. 31, 2024, as Appl. No. 18/427,821.
Claims priority of application No. 10-2023-0051637 (KR), filed on Apr. 19, 2023; and application No. 10-2023-0139370 (KR), filed on Oct. 18, 2023.
Int. Cl. C10G 67/14 (2006.01)
CPC C10G 67/14 (2013.01) [C10G 2300/202 (2013.01); C10G 2300/205 (2013.01); C10G 2300/4075 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing refined hydrocarbons from waste plastic pyrolysis oil, the method comprising:
a dehydration operation of applying a voltage to a first mixed solution obtained by mixing waste plastic pyrolysis oil, washing water, and a demulsifier to dehydrate the first mixed solution;
a hydrotreating operation of hydrotreating a second mixed solution obtained by mixing the first mixed solution dehydrated in the dehydration operation and a sulfur source to produce refined oil from which impurities are removed; and
a dewaxing operation of dewaxing the refined oil from which impurities are removed.