@misc{PoojitganontAntoshkivSinchaietal., author = {Poojitganont, Thanapol and Antoshkiv, Oleksiv and Sinchai, Jirathiwat and Watjatrakul, Boonchai and Berg, Heinz Peter}, title = {Numerical investigation of catalytic afterburner at various operational conditions}, series = {AIP Conference Proceedings}, volume = {3086}, journal = {AIP Conference Proceedings}, number = {1}, publisher = {AIP Publishing}, doi = {10.1063/5.0214515}, pages = {1 -- 10}, abstract = {The system of hydrogen catalytic oxidation is applied in various industrial applications; for example, afterburning of fuel cell exhaust gases, removing of hydrogen residues from electrolysis gas, catalytic drying processes. Since the reaction rate is directly proportional to the surface area of the coating material, a number of small lattice slots is augmented. However, the slots also cause the increment of pressure losses on the system. In this study, CFD simulation is applied to investigate the physical and chemical phenomena in catalytic burners. Multiple slotted afterburners are modeled with slot densities of 1xC to 4xC cells per square inch (cpsi). The air mass flow rates vary from 20 to 100 g/s. The outlet velocities are validated using the experimental data. In parallel, the alternative simulation method using the porous media model is also employed. In order to simulate both homogeneous and heterogeneous oxidation, the chemical kinetics of hydrogen and carbon dioxide in Chemkin format are implemented. The calculated results are compared with the correlated experimental data. Furthermore, the variations of inlet pressure and temperature are also discussed.}, language = {en} }