Open AccessThe influence and optimization of air distribution method on the boiler burns high-sulfur coal
Author(s) -
Liu Hong-gang,
Shaobo Lu,
Zhiyu Song,
Xiu Liu,
Ning Wang,
Jiting Han,
Minghao Zhao,
Weiwei Jiang,
Shuai Guo
Publication year - 2022
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 - 10.1088/1755-1315/983/1/012067
Subject(s) - flue gas , boiler (water heating) , pulverized coal fired boiler , corrosion , combustion , combustor , high temperature corrosion , coal , volume fraction , metallurgy , water cooled , sulfur , waste management , materials science , environmental science , chemistry , water cooling , composite material , engineering , mechanical engineering , organic chemistry
A large amount of H2S will be generated during the operation of power plants mixed combustion with high-sulfur coal, causing high-temperature corrosion of the boiler water-cooled wa ll. In order to prevent it from pipes bursting due to high temperature corrosion during the operation of the unit, Air distribution was adjusted on a 350MW subcritical pulverized coal combustion boiler, especially for the opening of the secondary a ir valves of each layer of the burner, so as to reduce the volume fraction of H2S in the furnace and lower the corrosion of the water-cooled wall. The research results show that by adjusting the a ir distribution, the volume fraction of CO and O 2 in the flue gas of the furnace is changed, and at the same time, it also has an influences on the change of the flue ga s temperature in the furnace, a nd effectively inhibits the generation of H 2 S, a lleviating the high temperature corrosion of water wall.