Influence of Voltage and Duration of Plasma Pyrolysis of 1,1,2,2-Tetrachloroethane in the Liquid Phase by the Action of Low-Voltage Discharges

Plasma pyrolysis of 1,1,2,2-tetrachloroethane was carried out in a liquid phase at a dc source voltage of 100–300 V and a process time of 1–5 h. An increase in the dc voltage from 100 to 300 V led to an increase in the conversion of 1,1,2,2-tetrachloroethane from 21.6 to 71.7 wt % for 1 h with an increase in energy consumption for the transformation of 1,1,2,2-tetrachloroethane from 0.20 to 0.28 kW h/mol. As the process time was increased from 1 to 5 h, the conversion of 1,1,2,2-tetrachloroethane increased from 21.6 to 68.9 wt %, and energy consumption increased from 0.20 to 0.33 kW h/mol. Regardless of the conditions of pyrolysis, an increase in the conversion of tetrachloroethane led to a decrease in the yield of tetrachloroethylene and trichloroethylene by a factor of 2–3 due to their conversion into perchlorinated hydrocarbons.