| 摘要 |
<p>PURPOSE:To burn waste in an incinerator at high temperature, to bring the burnt waste into contact with a heat resistant oxidizing catalyst and further to highly effectively remove toxic materials in the burnt exhaust gas of waste by a wet toxic gas remover or a dry toxic gas remover. CONSTITUTION:Waste is burnt in an incinerator 1 at high temperature (preferably, at 850 deg.C or higher) and a burnt exhaust gas generated at that time is guided to a catalyst reactor 2. Then, in the catalyst reactor 2. the burnt exhaust gas is brought into direct contact with a heat resistant oxidizing catalyst having a hexaaluminate structure designated by MOxnAl2O3 (n represents 5.5 to 6, M represents Ba, Sr, Ca, Mg, Zr, K or La and x indicates 0.5 to 3.0) in which a part of M is displaced by one or more metals selected from a group of metals consisting of Mn, Cu, Co, Fe and Cr as catalyst components (preferably, Cu) under the high temperature, so that toxic materials in the exhaust gas are removed. Thus, CO, dioxines, hydrocarbons or the like which are toxic materials can be reduced and the exhaust gas can be discharged with non-pollution.</p> |
