燃煤电厂深度调峰下宽负荷脱硝技术研究进展
A review on wide-load denitrification technology under deep peak shaving in coal-fired power plants
综述了宽负荷脱销技术2个主要研究方向的进展,在催化剂改性方面探讨了宽温钒基和宽温锰基催化剂的研究进展;在结构改造技术方面,对比了6种结构改造技术的经济性、烟温提升能力及对锅炉效率的影响程度。研究发现,金属氧化物的掺杂可以有效改善催化剂的低温特性,并有效抑制硫酸氢铵的沉积;对机组采用烟气旁路技术进行改造后,烟气温度提升显著,对锅炉效率影响较小,更适合工业化应用。未来对催化剂的研发主要集中在继续拓宽适用温度范围、不同载体对适用温度的影响方面;结合具体实际条件,通过模拟与实验结合,开发灵活性高、成本低的改造技术,为燃煤电厂深度调峰后烟气处理问题提供参考依据。
The research progress in two main directions of wide-load denitrification technology is reviewed.As for catalyst modification,the research progress in wide-temperature vanadium-based catalyst and wide-temperature manganese-based catalyst is expounded.Six kinds of structural modification technology are compared in their economics,their ability in enhancing flue gas temperature,and their impact degree on boiler efficiency.It is found that the doping of metal oxides can effectively improve the low-temperature characteristics of the catalyst and effectively inhibit the deposition of ammonium bisulfate.After the plant unit is modified with the flue gas bypass technology,the temperature of flue gas increases significantly,and the boiler efficiency receives less impact,which is more suitable for industrialized application.In the future,the R&D of catalysts will mainly focus on continuing to broaden the applicable temperature range and studying the influence of different carriers on the applicable temperature;According to specific actual conditions,it is suggested to develop the modification technologies with high flexibility and low cost through combining simulation with experiment,providing a certain reference for solving the problems in flue gas treatment after the wide promotion of deep peak shaving technology in coal-fired plants in the future.
深度调峰 / 烟气温度 / 宽负荷脱硝 / SCR / 燃煤电厂
deep peak shaving / flue gas temperature / wide-load denitrification / SCR / coal-fired power plant
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中央引导地方科技发展资金项目(2023ZY0006)
内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司自筹科技项目(2024-ZC-2-04)
内蒙古工业大学自然基金项目(ZZ202110)
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