2025/08/26 by P Pieterse, Diego González, Ammar Najam +3 · 1 voice
Materials Science · Medicine · Engineering · #Catalytic Processes in Materials Science #Plasma Applications and Diagnostics #High-Temperature Coating Behaviors
paper · pdf · doi:10.14311/ppt.2025.1.52
openalex publication_date 2025/08/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
A pre-study of free burning arcs between carbon electrodes for potential use in gasification processes is presented. Free-burning arcs offer the potential to be used without additional gas feed or significant changes to gas flows in established gasification systems as well as with minimal cooling requirements for improved energy efficiency. Direct current (DC) arcs with currents up to 200 A and power levels up to 40 kW have been operated in molecular gas mixtures of H2, CO and CO2. The electrical characteristics and dynamic behaviour of the arcs under various electrode configurations have been analysed, along with an assessment of electrode erosion. Finally, concepts for the power sources have been deduced and tested.