循环悬浮式烟气半干法脱硫技术的实验研究

建立了烟气处理量1500Nm^3／h的中试试验台，对循环悬浮式半干法烟气脱硫工艺进行了实验研究。研究了运行参数（包括烟气在吸收塔内的停留时间，Ca／S，绝热饱和温距，浆滴粒径，入口二氧化硫浓度，入口烟温等），脱硫灰再循环等因素对脱硫塔内和整个系统脱硫效率的影响。研究结果表明运行参数中绝热饱和温距、钙硫比以及浆滴粒径的变化对系统脱硫效率的影响明显，循环灰的增加有利于提高脱硫效率。图18表2参9

Experimental Study of Semi-dry Flue Gas Desulfurization in Circulating Suspension Fluidized Bed

An experimental pilot installation for dealing with 1500Nm3/h flue gas has been erected and studies on semi-dry desulfurization technology of flue gas in circulating suspended fluidized beds conducted.The influence of operational parameters(including lingering time of the flue gas in the absorption tower,Ca/S ratio,remoteness from the adiabatic saturation temperature,size of the slurry drops,SO_2 concentration at entrance,flue gas temperature at entrance,etc.) and factors like recirculation of desulfurized ash,on the desulfurization efficiency of the desulfurization tower and that of the whole system,have been investigated.Study results show that among operation parameters,changes in remoteness from the adiabatic saturation temperature,the Ca/S ratio and the slurry drop size all have a noticeable effect on the system's desulfurization efficiency. An increase of recirculating ash is also advantageous for boosting desulfurization efficiency.Figs 18,tables 2 and refs 9.