| 초록 |
Decomposition of carbon dioxide (CO2) by gliding arc plasma was examined. The gas entered through a nozzle tube from the upstream cylinder reactor and exited at a downstream of the reactor. Some additional gases, such as N2, O2, air, and H2O, have been used to study the effect on CO2 conversion. A simple kinetic reaction model was made to investigate the pathway of plasma reaction. Experiment results indicate the conversion of pure CO2 injection reached 18% at the total gas flow rate of 0.85 L/min and produced CO and O2 as the final products. Proved by the similarity between experimental and simulation result, the conversion reaction was initiated by electron. The existence of excited N2 level gave a positive effect while O2 and air produced an opposite effect which might be caused by reverse reaction C and CO to CO2. The conversion of CO2 reached 35% at N2 concentration 95%, higher that pure CO2 injection conversion which was only 15-18%. Existing water in the plasma reaction decreased the CO2 conversion and the selectivity of H2 from water was less than 6%. |
