【作者】 孙小军；

【导师】 赵毅； 马双忱；

【作者基本信息】 华北电力大学（河北） ， 环境工程， 2005， 硕士

【摘要】 本文以粉煤灰、石灰为原料制备了高活性吸收剂,通过在其中加入添加剂使之成为“富氧型”吸收剂,并对不同的添加剂使用了不同的分散方法。利用管道喷射试验装置筛选出脱硫脱氮性能最佳的吸收剂M,随后利用M 在烟气循环流化床上进行同时脱硫脱氮实验,研究了若干因素对脱硫脱氮效率的影响。在最佳实验条件下,脱硫效率和脱氮效率分别达到了94.5%和64.2%。本文利用扫描电镜和能谱仪对粉煤灰、高活性吸收剂以及反应后吸收剂的微区形貌和表面成份进行了分析,并利用化学分析方法对二氧化硫和氮氧化物的脱除产物进行了成分分析。结合试验结果,论文对高活性吸收剂在循环流化床上的脱硫脱氮机理进行了探讨。更多还原

【Abstract】 Each additive is added in a particular way to the highly reactive absorbent prepared from fly ash and lime to prepare “Oxygen-rich”absorbent. A duct injection system is employed to find the absorbent with best desulphurization and denitration performance, which is subsequently used to simultaneously remove SO2 and NO from flue gas on a circulating fluidized bed. The influences of several operating parameters are studied. Under the optimal operating conditions, the removal efficiencies of 94.5% and 64.2% are achieved for SO2 and NO, respectively. Scanning Electron Microscope and X-ray EDS are employed to study the micro-area characteristics of fly ash, highly reactive absorbent and the spent absorbent. The products of SO2 and NO in the spent absorbent are further analyzed with chemical analyzing methods. The mechanisms of simultaneous removal of SO2 and NO are investigated in this paper.更多还原