富氮金属有机骨架修饰生物炭捕集烟气中CO2协同SO2、NOx脱除机理研究

烟气中CO2、SO2、NOx减排是世界各国面临重要课题，富氮金属有机骨架（MOFs）修饰生物炭结合了富氮MOFs和多孔生物炭的优势，同时具有制备成本低廉、孔隙结构发达、表面化学活性高且易定向调控等特点，非常适宜成为优质的烟气净化剂。本项目创新性提出了一种富氮MOFs修饰生物炭捕集烟气中CO2协同SO2、NOx脱除的新工艺，旨在解析富氮MOFs修饰生物炭从制备到污染物脱除和再生全过程中其理化结构演变机理，探索富氮MOFs修饰生物炭捕集烟气污染物的微观反应规律，揭示富氮MOFs修饰生物炭捕集烟气中CO2联合脱除SO2、NOx的协同反应机制；在此基础上结合理论模型和实验优化，建立富氮MOFs修饰生物炭捕集烟气中CO2协同脱除SO2、NOx的理论和方法。本项目研究成果将有利于探索出一条大气污染物治理的新途径，为高效低成本碳基吸附剂开发和应用提供科学的指导。

The emission reduction of CO2, SO2 and NOx in the flue gas is an important issue in the world. The nitrogen-enriched metal organic frameworks (MOFs) modified biochar can combine the advantages of nitrogen-enriched MOFs and porous biochar: low cost of preparation, developed pore structure, high surface chemical activity and easy directional controllability, which is quite suitable for a high quality adsorbent of flue gas purification. This project presents a process of the preparation of the nitrogen-enriched MOFs modified biochar and its application in CO2 capture with the simultaneous removal of SO2 and NOx in flue gas. The evolution regulation of nitrogen rich MOFs modified biochar’s pore structure, surface groups of species composition and distribution of nitrogen from whole process of nitrogen enriched MOFs modified biochar of the preparation to gaseous pollutants removal to its regeneration will be explored in this project. The microcosmic reaction characteristics of nitrogen-enriched MOFs modified biochar during pollutants capture in flue gas will be also studied to reveal the formation mechanism of the physicochemical characteristics on nitrogen-enriched MOFs modified biochar and the synergistic reaction mechanism of CO2 capture with the simultaneous removal of SO2 and NOx in flue gas. On these basis, combining the theoretical model and experimental verification, the theory and method of CO2 capture with the simultaneous removal of SO2 and NOx in flue gas by the nitrogen-enriched MOFs modified biochar would be established to optimize the process parameters. The research results of this project will be helpful to explore a new way to control atmospheric pollutants, and also provide scientific guidance for the development and application of high efficient and low-cost carbon-based adsorbent.