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Catalytic upgrading of liquid hydrocarbons derived from coprocessing of heavy oil and coal
Author(s) -
George Zacheria Mathew
Publication year - 1990
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.5450680326
Subject(s) - hydrodesulfurization , hydrodenitrogenation , space velocity , catalysis , api gravity , coker unit , chemistry , coal , fuel oil , slurry , hydrogen , flue gas desulfurization , oil sands , fraction (chemistry) , sulfur , coal liquefaction , distillation , nitrogen , refining (metallurgy) , chemical engineering , petroleum , waste management , organic chemistry , materials science , coke , asphalt , engineering , composite material , selectivity
Coprocessing of heavy oil and coal under elevated temperature, hydrogen pressure and low space velocity resulted in a product slurry from which the fraction distilling below 430° C was catalytically upgraded over a commercial NiMo/Al 2 O 3 catalyst in a flow reactor. At 400° C, 13.3 MPa (H 2 ) and LHSV of 1.0 h −1 over 90% of sulfur and nitrogen could be removed, aromaticity reduced to 16% from 26% and the API gravity increased to 36.9 from 23.8. Hydrogen consumption under these conditions was considerably lower than that obtained for upgrading the oil sands coker gas oil. Activation energies for hydrodesulfurization and hydrodenitrogenation reactions were determined to be 59.5 and 120.4 kJ/mol, respectively.