Development of a gliding arc plasma reactor for CO2 destruction

Abstract

A gliding arc plasma reactor was designed to destruct carbon dioxide (CO2), which is a major greenhouse gas. To increase the CO2 destruction rate with a high processing gas volume, an orifice baffle for gathering the gas flow at the centre of the electrodes was installed in the gliding arc plasma reactor. The CO2 inflows with methane (CH4) and steam (H2O) improve the CO2 destruction. The parametric studies have been made of the change of CH4 addition, gas injection velocity of the centre nozzle, change of CO2 gas flow rate, and orifice baffle configuration. The produced gases were measured, and the data analysis has been achieved in determining the CO2 destruction rate, CH4 conversion rate, destruction energy efficiency, and selectivity for CO2 and H2. The highest CO2 destruction rate for each parameter has been shown as follows: the CH4/CO2 ratio is 1 as 40%, and the injection gas velocity is 69.5 m/s as 35.7%, the CO2 flow rate is 5 L/min as 42.6%, and the orifice baffle is Type 1, which had the smallest internal area, as 35.7%.