| 简介 |
PROBLEM TO BE SOLVED : To provide a gaseous waste treatment system for improving recombination performance of an off-gas recombiner without providing any dedicated blowers on an off-gas recirculation line.
SOLUTION : The gaseous waste treatment system includes, in an off-gas channel from a steam capacitor, an air ejector, the off-gas recombiner, an off-gas steam capacitor, a rare gas holdup device, and a stack. The gaseous waste treatment system also includes an off-gas recirculation line branched from an exit side of the off-gas steam capacitor and disposed to return one portion of off-gas through the off-gas steam capacitor to the off-gas channel between the steam capacitor and the air ejector, a flow regulating valve installed in the off-gas recirculation line, a hydrogen concentration detector for detecting hydrogen concentration of off-gas flowing in the off-gas channel at a downstream side of the off-gas steam capacitor, and a control unit for regulating the flow regulating valve based on the hydrogen concentration of the off-gas detected by the hydrogen concentration detector, thus circulating the off-gas to the off-gas recombiner through the off-gas recirculation line with the air ejector as a drive source.
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