Influences of NaOH on discharge characteristics of dielectric barrier discharge in aniline gas-liquid mixtures

Study the characteristic of gas-liquid two-phase dielectric barrier discharge (DBD), understanding its discharge mechanism deeply to promote its environmental and other industrial applications have great significance. In this paper, by diagnosing voltage-current waveforms, Lissajous graphics and other electrical characteristics and optical characteristics such as emission spectra and luminescence images, the affects of different liquid components to the discharge characteristic of gas-liquid two-phase DBD at atmosphere pressure were studied. The discharge characteristics of gas-liquid two-phase DBD in aniline and aniline with NaOH solutions were compared, the experimental results were used to calculate discharge power and transmission charge, combined with discharge theory, the discharge mechanism was analyzed. The results show that aniline solution with NaOH gas-liquid two-phase DBD, the discharge characteristic was significantly different from pure aniline, the strength of discharge current is about twice that of pure aniline solution at the same voltage, the luminous intensity stronger, discharge power and transmission charge larger, and 589nm wavelength of the spectral characteristic graph appears Na atomic line, the conductivity of the solution was increased when NaOH was added, promoting gas phase discharge intensity, so the discharge is more stronger.