Premium
A novel dissolution‐precipitation method for high‐efficiency separation of oil‐wetted oil sands
Author(s) -
Hu Pengcheng,
Chai Ruimin,
Liu Quanyou,
Wang Junlin,
Zhou ShuFeng
Publication year - 2020
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23684
Subject(s) - dissolution , asphalt , precipitation , oil sands , methanol , chromatography , chemistry , materials science , chemical engineering , organic chemistry , composite material , physics , meteorology , engineering
Dissolution‐precipitation is a novel high‐efficiency method for separating oil‐wetted oil sands. Four dissolving agents and three precipitating agents were studied to select the optimal combination. Results showed that N,N ‐dimethylcyclohexylamine (DMCHA) and methanol were the optimal dissolving and precipitating agents, respectively. The chemical group compositions, element content, and H/C atom ratio of bitumen separated by DMCHA‐methanol were analyzed, and the optimal conditions for oil sands separation were determined, under which the bitumen recovery reached 96.4%. After six separation cycles with DMCHA‐methanol, the bitumen recovery remained above 93%.