OZONE GENERATION PROCESS AND APPARATUS Russian patent published in 2003 - IPC

FIELD: chemical engineering. SUBSTANCE: process and apparatus are designed for generation of ozone form oxygen-containing gas. The latter is affected by pulse volume corona discharge having following characteristics: 0,014≤i_m≤i_s, where i_m is current amplitude and i_s maximum amplitude of pulse corona discharge current; 5×10³B≤U_m<U_s, where U_m is voltage amplitude and U_s voltage amplitude of irreversible passage to spark discharge within discharge space with pulse corona discharge; t_i≤3×10^-4s, where t_i is pulse duration provided that shape and duration of voltage and current pulses in discharge space may differ; dU/dt≥10⁸W/s, where dU/dt is voltage growth rate; and 0,01s^-1f_i≤0,3/t_i, where f_i is pulse succession frequency. Apparatus comprises high-voltage pulse generator and working chamber connected thereto accommodating electrode system in the form of coaxial electrode couple consisting of external low-voltage tubular electrode and internal high-voltage rod-shaped electrode. On the rod of internal electrode, in planes perpendicular to its longitudinal axis, conducting plates are additionally fixed. Distance L from the border of each plate to internal surface of tubular electrode follows the relationship: U_s/E_a<L<3×U_s/E_a, where E_a is average voltage of electric field in discharge space at voltage amplitude U_s, distance d among adjoining plates follows the relationship d_min<d<2×L with d_min being shielding distance; transverse dimension of plate D follows the relationship: ≤2×D_r<D = (D_T-2×L), where D_r is rod width and D_T transverse dimension of external electrode; and bending radius of plate border r follows the relationship: r<L, r≤δ/2 wherein δ is plate thickness. EFFECT: increased ozone generation efficiency. 8 cl, 1 dwg