| 摘要 |
<p>PURPOSE:To improve a regeneration effect considerably and to prolong the life of a catalyst in spite of repeated use by washing the catalyst for contact reduction and denitration of ammonia of which the performance is decreased by treatment of the waste combustion gas in an ultrasonic atmosphere. CONSTITUTION:A catalyst for contact reduction and denitration of ammonia of which the catalyst performance is decreased by the treatment of the waste combustion gas such as waste gas of a boiler is wsahed in an ultrasonic atmosphere to regenerate the activity of the catalyst. The waste combustion gas contg. dust contains SOx usually, and if resistance to SOx is considered, TiO2, ZrO2, etc. are more preferable than Al2O3 for the catalyst carrier to be used for said waste gas. An ultrasonic wave is used in this method; therefore, not only the water soluble alkaline component but also the fine dust clogged in the fine holes of the catalyst are removed by the cavitation effect thereof.</p> |
