| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electron-beam waste gas treating device enhanced in energy utilization efficiency of an electron beam, with the power required by a cooling air blower reduced and without its electron accelerator being broken. SOLUTION: This electron-beam waste gas treating device is provided with a reaction vessel 1 having an irradiation window, a waste gas inlet 11 and an ammonia inlet 12, an electron accelerator 2 emitting an electron beam, a metallic window foil 3 emitting electron beams to the irradiation window of the vessel 1, a cooling air header 4 having a port 5 for blowing cooling air 9 against the metallic window foil, a cooling air blower 6 for supplying air to the header and a cooling air duct 7. In this case, a means is provided to let the cooling air 9 from the cooling air blowing port contain moisture at a concn. above the critical humidity of ammonium sulfate, and a steam injection port 14 provided to the cooling air duct or cooling air header and jetting steam 13 or a gas-liq. contact device or a water spraying device is used as the means for producing the moisture-contg. air.</p> |
