PURPOSE: To enhance the treatment efficiency of exhaust gas and also to reduce power consumption by regulating the charge wave-form for plasma generation which is impressed between the electrodes of a plasma reactor to either a pulse charge wave-form or a triangular charge wave-form of high voltage instead of the conventional charge wave-form of a sine wave.
CONSTITUTION: Exhaust gas is introduced into a plasma reactor 5 via an exhaust pipe 4 from a cyclone collector 3. A variable power source 16 impresses optimum current, voltage, a charge interval, rising time and a triangular charge wave-form of maximum voltage between the electrodes of the plasma reactor 5 in accordance with a signal equivalent to the optimum degree of removal for the respective components (NOx, N2O, SOx) given from a program generator 10. In other words, this variable power source 16 controls the charge interval (t) of the triangular charge wave-form, the rising time τ and the maximum voltage Vp and sets the optimum value in the relation of power consumption and the degree of removal for NOx, N2O, SOx. The variable power source 16 impressed this optimum value between the electrodes of the plasma reactor 5.
KANEKO SHOZO
MURATA MASAYOSHI
NISHIDA SEIICHI
MURAKAMI NOBUAKI
IMAMOTO TOSHIHIKO
HASHIZAKI KATSUO
KONDOU TAKANOBU
MORII ATSUSHI
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