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Direct coking of athabasca tar sand
Author(s) -
Filby J. E.,
Flynn P. C.,
Goldman J. M.
Publication year - 1980
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.5450580112
Subject(s) - oil sands , coke , residence time (fluid dynamics) , asphalt , tar (computing) , slurry , char , waste management , yield (engineering) , environmental science , petroleum coke , delayed coker , pulp and paper industry , chemistry , coal , metallurgy , environmental engineering , materials science , geology , geotechnical engineering , engineering , composite material , computer science , programming language
Yield patterns and product quality have been determined for the direct coking of Athabasca tar sand. Temperature and vapor residence time are the key variables affecting yield; tar sand residence time has a minor impact in yield provided that a minimum contact time is achieved. Yields are not sensitive to the composition of tar sand feed. Yields from direct coking are similar to those from commercial bitumen coking processes; previously reported variations in direct coking yields can be reconciled when liquid product endpoint and coking severity are considered. Coke deposited on the sand is readily burned, producing a flue gas high in SO 2 and particulates, and a free‐flowing sand. The sand settles readily from a slurry and disposal presents no obvious environmental concerns.