为了降低煤炭燃烧产生SO2和NOx 对大气环境的影响，减少污染物排放，在4种不同的工况下，研究了添加不同含量催化氧化剂（ FeCl3/Al2 O3）的改性钙基吸收剂（ CaO、Ca（ OH）2混合剂）、相对湿度、氧气含量对燃煤燃烧释放的SO2和NOx 的吸收效果。结果表明：添加氧化剂后，脱硝率显著升高，但到达一定值后趋于稳定，综合脱硫脱硝效率，最佳氧化剂添加量为15%，其平均脱硫效率和脱硝效率分别为57.5%、51.4%。当SO2初始体积分数为360×10－6时，脱硫效率达到最大96%；相对湿度对脱硫的影响大于脱硝；当O2体积分数为6%时，脱硫、脱硝效率达到最大值且趋于稳定，最高脱硫脱硝效率分别为95.2%、76.4%。%In order to reduce the influence of SO2 and NOx from coal combustion on atmospheric environment,four experiment conditions were designed. The characteristics of calcium based absorbent which were the combination of CaO and Ca( OH)2 were modified by adding different amounts of FeCl3/Al2 O3 catalyst. The influence of absorbent characteristics,relative humidity,O2 content on the absorption of SO2 and NOx were investigated. The results showed that,the addition of catalyst significantly improved denitration rate which remained stable when reached a special value. In order to get the best desulfuration and denitration effects,the optimum catalyst addition was 15%. The av-erage desulfuration and denitration rate were 57. 5% and 51. 4%. When the initial concentration of SO2 was 3. 6×10-4 ,the maximum des-ulfuration rate could reach 96%. Compared with denitration effects,desulfuration effects was more susceptible to the relative humidity. When the O2 content reached 6%,the maximum desulfuration and denitration rate tended towards stability. The high desulfuration and de-nitration rate was 95. 2% and 76. 4%.
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