摘要
利用固定床连续流动反应器研究了BaO/γ-Al2O3同时吸附模拟烟气中NO和SO2的工艺条件和再生循环使用性能,对BaO/γ-Al2O3进行了比表面积和程序升温表面反应(TPSR)等表征分析.结果表明,BaO/γ-Al2O3的适宜工艺条件是SO2与NO体积比为2.9～8.4、原料气中O2体积分数大于4.5%、吸附温度448～523 K.BaO/γ-Al2O3在循环使用过程中吸附能力下降.与NOXSO吸附催化剂Na2CO3/γ-Al2O3相比,BaO/γ-Al2O3同时吸附SO2和NO的能力大、再生循环使用性能好、适宜的SO2与NO体积比范围宽、热稳定性好.将BaO/γ-Al2O3应用于NOXSO工艺可望提高该工艺的脱硫、脱氮效率.
The process conditions of simultaneous adsorption of NO and SO2 from simulated flue gas on BaO/ γ- Al2O3 and the regeneration performance of BaO/γ - Al2O3 were investigated by means of experiments in a fixed bed continuous flow reactor. The characters of BaO/γ - Al2O3 were analyzed by specific surface area analysis and TPSR （Temperature Programmed Surface Reaction ）. The suitable process conditions are： volume ratio of SO2 to NO 2.9-8.4 ,volume fraction of oxygen in the charge gas more than 4.5% and the adsorption temperature 448-523 K. The adsorptive capacity of BaO/γ - Al2O3 is declined during its recycle use. BaO/γ -Al2O3 is better than Na2CO3/γ - Al2O3, which is a catalyst/adsorbent in NOXSO process, in the respects of capacities of simultaneous adsorption of SO2 and NO, regeneration performance, suitable volume ratio of SO2 to NO, and thermal stability. The efficiencies of desulfurization and denitrification are expected to be improved if BaO/γ -Al2O3 is used in NOXSO process.
出处
《化工环保》
CAS
CSCD
北大核心
2005年第5期390-394,共5页
Environmental Protection of Chemical Industry
基金
国家自然科学基金资助项目(20476032)
广东省自然科学基金资助项目(030951)
广东省科技计划资助项目(2004B33301002)
