期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：295
期号：5
页码：1-9
DOI：10.1088/1755-1315/295/5/052049
出版社：IOP Publishing
摘要：In order to make the NOx stable discharge standard after the ultra-low emission reform of coal-fired power plants, SCR denitration unit safe and economical operation. Taking a 600MW unit as the research object, the effectiveness of the NOx uniformity thermal state optimization adjustment strategy at the outlet of the denitration unit was studied, and the denitration unit inlet and outlet flow fields and NOx concentration field were tested to analyze the existing problems and formulate an optimization plan. The thermal state optimization adjustment, the NOx uniformity of the denitration unit outlet is significantly improved, the standard deviation of the NOx concentration at each outlet of the load section is reduced to below 15% and the ammonia escape concentration is reduced to below 3ppm. The research shows that the thermal optimization adjustment strategy is reliable and effective for improving the NOx uniformity of the SCR denitration unit, and the unit can operate safely and economically.
