| 摘要 |
PURPOSE:To efficiently remove nitrogen oxides and dioxins in a waste gas with one kind of a catalyst at the same time by cooling the waste gas to a specific temp. and after collecting dust, heating again up to a specific temp. and bringing the gas into contact with a specific catalyst with a reducing agent for denitration. CONSTITUTION:The waste gas containing nitrogen oxide and toxic chlorine compounds such as dioxins is cooled to 100-180 deg.C. The cooled waste gas is, after introduced into a bag filter to capture dust containing solid dioxins, heated again to 200-249 deg.C. Next, the waste gas is brought into contact with the honeycomb shaped catalyst, which is composed of 70-95wt.% at least one kind of oxides of Ti and Si and 1-20wt.% at least one kind of oxides of W and V and 3-7mm in aperture equivalent diameter, with the reducing agent for denitration such as ammonia. |
