鼓泡塔中钢渣湿法烧结烟气脱硫过程及机理

Mechanism and Process of Sintering Flue Gas Desulfurization by Steel Slag in Bubbling Tower

在自制有机玻璃鼓泡脱硫反应器中(直径为80mm,高为300mm),考察了钢渣湿式烧结烟气脱硫过程中钢渣粒径、钢渣吸收浆液浓度、进口二氧化硫浓度、浆液p H值及烟气流量等因素对脱硫率的影响以及钢渣烧结烟气脱硫机理.结果表明,当温度为常温,钢渣粒径小于75μm(200目),浆液浓度大于4%,进口二氧化硫浓度低于2 000mg/m3,烟气流量小于0.06m3/h,初始p H值大于7时,SO2去除率可达到80%以上,能够实现"以废治废".通过对钢渣脱硫前后的XRD,XRF分析,探索了钢渣湿法烧结烟气脱硫机理.

The mechanism and process of sintering flue gas desulfurization by steel slag were investigated in bubbling tower made up organic glass with a diameter of 80mm and a height of 300mm,which is a kind of simplified good gas-liquid mass transfer equipment. The effects of various operating parameters, i. e. , steel slag particle size, slurry concentration, import sulfur dioxide concentration, pH value and flue gas flow were systematically investigated in the experiments. The most optimal experimental conditions for sintering flue gas desulfurization was found that when the temperature is normal temperature, steel slag particle size is greater than 200 mesh size, slurry concentration is greater than 4%, imports SO2 concentration is less than 2 000mg/m3 ,flue gas flow is less than 0. 06m3/h, initial pH value is more than 7, the SO2 removal efficiency could achieve 80% above. The mechanism of sintering flue gas desulfurization by steel slag was explored by comparative analysis of XRD and XRF date of steel slag before and after desulfurization. Steel slag as desulfurization agent and treating wastes with wastes can be achieved, the industrial waste can be changed in to resource and the costs can be reduced.