Open AccessSimulation and optimization of NO generation characteristics of ultra supercritical compact boiler
Author(s) -
Wentai Dai,
Jianquan Liu,
Zhong Li
Publication year - 2021
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 - 10.1088/1755-1315/702/1/012025
Subject(s) - boiler (water heating) , supercritical fluid , combustor , combustion , process engineering , computer simulation , coal , nuclear engineering , pulverized coal fired boiler , mechanical engineering , environmental science , materials science , mechanics , engineering , waste management , simulation , thermodynamics , chemistry , physics , organic chemistry
Computational fluid dynamics numerical simulation method was used to numerically simulate the combustion process in 700 °C ultra-supercritical compact swirl opposed coal-fired boiler. The flow field distribution, composition distribution and NO distribution in the furnace were obtained through simulation. Simulating the NO generation in the boiler when the burner is put into different operation modes under different loads. The results show that the velocity and temperature fields in the ultra-supercritical compact boiler have the same characteristics as the typical swirl opposed coal-fired boiler. The O 2 concentration showed good consistency with the main gas products CO and CO 2 concentration. To a certain extent, NO generation and distribution characteristics are related with the temperature field. When the burner is put into operation in different ways, NO generation and distribution are different correspondingly. The simulation and test can provide theoretical basis for the technical implementation and structural optimization of the ultra-supercritical compact boiler at 700 °C.