Patent ID: 8367005

Claim:
A gas processing apparatus using plasma; the gas processing apparatus comprising: a plasma equipment series having a plurality of units of plasma equipment arranged in series on a gas flow channel; and a controller that controls the plurality of controlling the operation of each of the units of plasma equipment of the plasma equipment series; wherein each of the plurality of units of plasma equipment has a plasma generator for generating plasma within a reaction chamber communicated with the gas flow channel; and an electromagnetic wave radiator for radiating electromagnetic waves to the plasma generated by the plasma generator; wherein the controller selects the number of the plurality of units of plasma equipment to operate according to a component of the introduced gas, wherein the reaction chamber is communicated with the gas flow channel via a bundled plurality of pipes made of an electrical conductor wherein the bundled plurality of pipes is supported by a support panel, and the bundled plurality of pipes on said support panel form a cavity in the reaction chamber, and wherein the inside diameter of each of the bundled plurality of pipes is less than about ¼ th the wavelength of the electromagnetic waves, and the length of each of the bundled plurality of pipes is about ¼ th or more of the wavelength, for preventing the electromagnetic waves from escaping from said cavity.