湿化学法同步脱除烟气中气态污染物是燃烧源大气污染控制的重要方法之一，为探究采用不同氧化吸收策略同时脱除燃烧烟气中SO2，NOx和CO2的可行性，基于化学热力学原理，分析了9种联合氧化吸收策略的性能，具体的氧化吸收策略包括：H2O2-NH3·H2O，H2O2-MDEA，H2O2-NaOH，O3-NH3·H2O，O3-MDEA，O3-NaOH，NaClO2-NH3·H2O，NaClO2-MDEA和NaClO2-NaOH，并提出新的动态加权法对其性能进行综合评价。结果表明：上述所有策略均具有SO2，NOx和CO2捕获的可行性。O3-NaOH，NaClO2-MDEA和NaOH做吸收剂的氧化吸收溶液分别对单一脱硫、脱硝和脱碳效果最好。当综合考虑同步脱除SO2，NOx和CO2时，NaClO2-MDEA优于其他策略，其结果可为燃烧烟气中的气体污染物的联合脱除提供参考。%The simultaneous removal of gaseous pollutants from combustion flue gas by wet chemical methods is one of the most important ways for the air pollution control from combustion sources. To examine the feasibility of the simultaneous removal of SO2, NOx and CO2 by using varied oxidization-absorption methods, the performances of nine kinds of combined oxidization-absorption strategies were analyzed based on the principle of chemical thermodynamics, including H2O2-NH3·H2O, H2O2-MDEA, H2O2-NaOH, O3-NH3·H2O, O3-MDEA, O3-NaOH, NaClO2-NH3·H2O, NaClO2-MDEA and NaClO2-NaOH. Furthermore, a new dynamic-weighted method was proposed to comprehensively assess their performances. The results show that all the strategies have the removal feasibility: O3-NaOH, NaClO2-MDEA and NaOH perform best for the separate removal of SO2, NOx and CO2 respectively. NaClO2-MDEA is superior to other strategies when considering capturing SO2, NOx and CO2 simultaneously. The results may provide a reference to the combined removal of gaseous gas pollutants from combustion flue gas.
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