Open AccessStudy on ultra-low NOX emission technology of 660 MW ultra-supercritical circulating fluidized bed boiler
Author(s) -
Shengwei Xin,
Yingping Li,
Peng Zhang,
Changhua Hu,
Hu Wang
Publication year - 2020
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 - 10.1088/1755-1315/467/1/012172
Subject(s) - supercritical fluid , fluidized bed combustion , boiler (water heating) , combustion , materials science , nuclear engineering , waste management , fluidized bed , environmental science , chemical engineering , process engineering , chemistry , engineering , organic chemistry
For the first 660MW ultra-supercritical circulating fluidized bed boiler in China, the original NO X emission concentration would be controlled and maintained below 50mg/Nm 3 , by improving the uniformity of bed temperature and bed pressure, strengthening the secondary air fractional combustion, optimizing the combustion temperature and operating oxygen and so on. Meanwhile, selective non-catalytic reduction (SNCR) technology with urea as reducing agent is selected as the auxiliary method to ensure the boiler achieves ultra-low NO X emission under full load conditions.