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Media type:
E-Article
Title:
Reduction of CO2 Emission from Off‐Gases of Steel Industry by Dry Reforming of Methane
Contributor:
Angeli, Sofia D.;
Gossler, Sabrina;
Lichtenberg, Sven;
Kass, Gilles;
Agrawal, Anand Kumar;
Valerius, Miriam;
Kinzel, Klaus Peter;
Deutschmann, Olaf
imprint:
Wiley, 2021
Published in:Angewandte Chemie International Edition
Language:
English
DOI:
10.1002/anie.202100577
ISSN:
1433-7851;
1521-3773
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title><jats:p>In a novel process, CO<jats:sub>2</jats:sub> and CH<jats:sub>4</jats:sub> from the off‐gases of the coke oven and blast furnace are used in homogeneous reforming of those greenhouse gases to valuable syngas, a mixture of H<jats:sub>2</jats:sub> and CO. Synthetic mixtures of the off‐gases from those large apparatuses of steel industry are fed to a high‐temperature, high‐pressure flow reactor at varying temperature, pressure, residence time, and mixing ratio of coke oven gas (COG) to blast furnace gas (BFG). In this study, a maximal reduction of 78.5 % CO<jats:sub>2</jats:sub> and a CH<jats:sub>4</jats:sub> conversion of 95 % could be achieved at 1350 °C, 5.5 bar, and a COG/BFG ratio of 0.6. Significant carbonaceous deposits were formed but did not block the reactor tube in the operational time window allowing cyclic operation of the process. These measurements were based on prior thermodynamic analysis and kinetic predictions using an elementary‐step reaction mechanism.</jats:p>