CAJ | 학술논문

采用钙基吸收剂的烟气脱硫技术拥有95%以上的市场份额，基于钙基烟气脱硫工艺协同乃至同时脱除NOx是最现实可行的技术方向。本文阐明了钙基脱硫工艺协同脱硝的可行性，并根据硫氮协同脱除反应所处的温度区段，将钙基吸收剂硫氮协同脱除技术分为炉内联合脱除、中温同时脱除和低温段协同脱除三类，针对每类技术的基本原理、研究现状和存在的问题进行了分析和总结，指出将NO氧化为NO2在低温段实现SO2和NOx协同乃至同时脱除是最现实可行的技术方向，并针对该技术存在的 NO2在低温脱硫工艺中吸收效率低和钙基吸收剂利用率低的问题提出了研究方向。最后，对钙基脱硫工艺协同脱硝技术的发展进行了展望，指出了实施超净排放后基于低温脱硫工艺协同脱硝技术应具有广阔的工业应用前景。
채용개기흡수제적연기탈류기술옹유95%이상적시장빈액，기우개기연기탈류공예협동내지동시탈제NOx시최현실가행적기술방향。본문천명료개기탈류공예협동탈초적가행성，병근거류담협동탈제반응소처적온도구단，장개기흡수제류담협동탈제기술분위로내연합탈제、중온동시탈제화저온단협동탈제삼류，침대매류기술적기본원리、연구현상화존재적문제진행료분석화총결，지출장NO양화위NO2재저온단실현SO2화NOx협동내지동시탈제시최현실가행적기술방향，병침대해기술존재적 NO2재저온탈류공예중흡수효솔저화개기흡수제이용솔저적문제제출료연구방향。최후，대개기탈류공예협동탈초기술적발전진행료전망，지출료실시초정배방후기우저온탈류공예협동탈초기술응구유엄활적공업응용전경。
Due to wide use and low price,Ca-based absorbents have become the mainstream sorbents used to remove SO2 in coal-fired power plants. It is plausible to develop SO2 and NOx synergistic removal based on the calcium-based desulfurization technology. The feasibility of developing SO2 and NOx synergistic removal by calcium based absorbents is illustrated in this paper. According to reaction temperature of SO2 and NOx synergistic removal,SO2 and NOx synergistic removal technologies are divided into SO2 and NOx combined removal in furnace,SO2 and NOx simultaneous removal at medium temperature and SO2 and NOx synergistic removal at low temperature. The basic principles, research status and problems of each type of technology are analyzed. NOx can be removed at low temperature in the Ca-based FGD process by using the oxidation method to convert NO to NO2,but NO2 absorption efficiency and absorbent utilization are two key issues which restrict the technology progress. The development of SO2 and NOx synergistic removal by calcium-based desulfurization is prospected. SO2 and NOx synergistic removal at low temperature will have broad industrial application and development prospect as ultra-low emission is achieved in the coal-fired power plants.