Open AccessStudy on the Validity of NOX Uniformity Thermal State Optimization Adjustment Strategy for SCR Denitration Unit of Coal-fired Power Plant
Author(s) -
Hao Yu,
Zhi Wang,
Chao Li,
Fan He,
Liangdong Qu,
Dexin Wang,
Xiaohui Qi,
Jia Du
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/295/5/052049
Subject(s) - thermal power station , nox , thermal , power station , unit (ring theory) , coal , power (physics) , coal fired , process engineering , inlet , engineering , environmental science , waste management , chemistry , mechanical engineering , electrical engineering , mathematics , thermodynamics , physics , mathematics education , organic chemistry , combustion
In order to make the NO x 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 NO x 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 NO x concentration field were tested to analyze the existing problems and formulate an optimization plan. The thermal state optimization adjustment, the NO x uniformity of the denitration unit outlet is significantly improved, the standard deviation of the NO x 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 NO x uniformity of the SCR denitration unit, and the unit can operate safely and economically.