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Carbon monoxide hydrogenation over cobalt catalyst in a tube‐wall reactor: Part II. Modelling studies
Author(s) -
Dalai A. K.,
Esmai M. N.,
Bakhshi N. N.
Publication year - 1992
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.5450700210
Subject(s) - methanation , carbon monoxide , cobalt , water gas shift reaction , catalysis , hydrogen , carbon dioxide , fischer–tropsch process , water gas , chemistry , syngas , carbon fibers , hydrogen production , materials science , chemical engineering , thermodynamics , inorganic chemistry , organic chemistry , composite material , physics , engineering , composite number , selectivity
A mathematical model was developed to predict the performance of Fischer‐Tropsch Synthesis over cobalt catalyst in a tube‐wall reactor. Comparison was made between model predictions and previous experimental results (part 1 of this paper) for pressures 0.35‐1.03 MPa, temperatures 250−275°C, and exposure velocities 139‐722 μ/s. The agreement was good. The model predicts an increase in methanation activity with temperature. Carbon monoxide and hydrogen conversions, and water and carbon dioxide concentrations increase along the reactor axis. With an increase in exposure velocity, hydrocarbons and carbon dioxide production increase, but water production decreases. However, the water‐gas shift activity increases continuously along the reactor axis. The model is based on two‐dimensional transport equations, and employs the orthogonal collocation method in its numerical predictions.