纳米级二氧化钛脱硫及再生性能的试验研究

EXPERIMENTAL RESEARCH ON DESULFURIZATION AND REGENERATION FOR NANOMETER TITANIUM DIOXIDE SORBENT

以纳米级二氧化钛粉末为基料 ,采用溶胶 -凝胶法 (sol -gel)制备了四种实验样品 ,在低温下进行动态吸附试验 ,结果表明二氧化钛用于烟气脱硫的机理主要是物理吸附 ,再生后重复使用是可行的。低温烧结的纳米级TiO2 的脱硫性能良好 ,具有工程应用前景。在4 40℃和 5 40℃下烧结的TiO2 脱硫剂对SO2 的吸附性能最佳。TiO2 脱硫剂的晶态是影响脱硫性能的重要因素之一。

Four test samples of superfine TiO 2 were prepared by solgel method,which are tested for dynamic adsorption under low temperature in a fixed bed.The results show that it is practicable for titanium dioxide applied in gas flue desulfurization (GFD).Titanium dioxide which sintered at low temperature has well desulfurization charater and pretty good prospect in engineering application.Specially ranging from 440 to 540℃,it has the best adsorption property.The crystal state of sorbent is an important factor for desulfurization.