A novel discharge reactor was designed, utilizing the transient passage of liquid droplets between the electrode pairs to trigger a gas discharge. The reactor was employed to investigate the degradation of carbon disulfide (CS2) exhaust gas , and the study examined the effects of various parameters including input energy, droplet dropping frequency, gas flow rate , oxygen concentration, and solution composition on the degradation process. The results demonstrated the effective removal and degradation of CS2 gas from the gas stream using the droplet-triggered gas discharge reactor. During the gas discharges , the droplets absorbed the gas-phase reaction products , thereby promoting the degradation of CS2. Optimal CS2 removal was achieved with a droplet dropping frequency of 0.5~1 drop/s. The removal rate decreased with slower frequencies , while higher frequencies led to increased energy consumption. Among the same conditions , the lowest CS2 removal rate was observed when deionized water was used as the absorbent droplet, followed by a 5% aqueous sodium sulfate solution. The highest removal rate was achieved with a 5% sodium hydroxide solution. The gas-phase products of the CS2 degradation reaction mainly consisted of SO2, CO2, and a small amount of intermediate product COS, while the liquid-phase products were sulfate ions. Furthermore , the degradation mechanism was analyzed.
Close-JIN Linyi,YUAN Jiale,XU Xin,CAO Yujie,HUANG Liwei,SONG Chengzhi.Removal of carbon disulfide by droplet-triggered gas discharge reaction[J/OL].Energy Environmental Protection:1-7[2023-10-16].https://doi.org/10.20078/j.eep.20231007.