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Catalytic Hydrogenation of Carbon Dioxide to Methane in Wall‐Cooled Fixed‐Bed Reactors ‡
Author(s) -
Martinez Molina Marta,
Kern Christoph,
Jess Andreas
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500614
Subject(s) - methanation , methane , carbon dioxide , catalysis , substitute natural gas , chemistry , bar (unit) , syngas , carbon fibers , biogas , materials science , chemical engineering , thermodynamics , analytical chemistry (journal) , waste management , organic chemistry , composite material , physics , meteorology , composite number , engineering
The methanation of CO 2 was studied in a wall‐cooled single‐tube fixed‐bed reactor with a nickel‐based catalyst. Heat transfer and kinetic parameters were experimentally determined. Temperature profiles were recorded under different conditions: inlet gas mixtures with CO 2 diluted in H 2 or N 2 , tubes with diameters of 2 or 4 cm, and pressures of 1 or 4 bar at 160–200 °C. Modeling of CO 2 conversion and temperature profiles by a two‐dimensional reactor model was successfully achieved. The study is completed by modeling technical reactors for both upgrading of biogas and conversion of a CO 2 /H 2 feed gas free of CH 4 ; design data of reactors for a production of 450 m 3 of synthetic natural gas per hour are given.