半干式电晕放电烟气脱硫脱硝技术研究

提出了一种新的半干式电晕放电烟气脱硫脱硝方法,将含有SO2和NOX的高温烟气引入喷雾干燥塔增湿降温,然后引入电晕放电烟气净化器,施加高电压,并加入氨气,氨与电晕放电协同作用,将SO2和NOX转化为铵盐颗粒,并从烟气中分离出来,收集在极板(管)上,用水冲洗极板上的产物。将产物溶液喷入喷雾干燥塔,雾滴蒸发干燥形成较大的铵盐颗粒,加以回收,同时使烟气增湿降温。

Semi-dry Desulfuration and Denitration Technique for Flue Gas by Corona Discharge

A semi-dry technique for flue gas DeSO2 and DeNOx by corona discharge was introduced. The high temperature flue gas contained SO2 and NOx is put into the spray drying tower for humidifying and cooling, and then put it into the flue gas cleaning reactor by corona discharge, energize the high voltage power and supply the ammonia on the reactor. SO2 and NOx are transformed into aerosol of ammonium slat by synergetic effect of ammonia and corona discharge. The aerosol of ammonium slat is detached from flue gas and catched at the pole plate, and rinse the byproduct on the pole plate with water. The solution of byproduct is put into the spray drying tower. By sprayed drying, the byproduct droplet is transformed into granule and recycled, while the flue gas is humidified and cooled.