Method for treating organic waste gas by using plasma fluidized bed

The invention relates to a method for treating an organic waste gas by using a plasma fluidized bed. The method comprises the following steps: introducing the organic waste gas to be treated into a plasma device comprising the plasma fluidized bed and a high-voltage power supply; starting the high-voltage power supply; forming an athermal arc plasma from a cutter-shaped stainless steel electrode under the action of high voltage so as to convert air in the organic waste gas into an active gas with a great amount of active substances; degrading and mineralizing toxic substances in the organic waste gas; driving granular activated carbon inside a stainless steel net through undegraded toxic substances and degradation products to fluidize so as to form the plasma fluidized bed; enabling the granular activated carbon to adsorb toxic substances which are not degraded by the plasma, and degradation products so as to form a toxic substance accumulation area; on the other hand, enabling the active gases to activate the surface of the granular activated carbon and at the same time degrade and mineralize the toxic substances accumulated on the surface of the activated carbon, thereby completing modification and regeneration of the activated carbon. Due to double actions of plasma and the activated carbon, the purpose of purifying organic gases is achieved.