Open AccessOptimizing coal burning caused by coal breaking in recirculating vulcanization bed unit based on fuel control strategy
Author(s) -
Fang Zhang,
Zhang Li
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 - 10.1088/1755-1315/558/2/022008
Subject(s) - coal , waste management , anthracite , pulverized coal fired boiler , fluidized bed combustion , combustion , boiler (water heating) , coal combustion products , bituminous coal , coke , clean coal technology , environmental science , flue gas desulfurization , engineering , chemistry , organic chemistry
Recirculating fluidized bed has high efficiency, low pollution and good coal adaptability. It can burn all kinds of quality fuels, such as peat, bituminous coal (including high sulfur coal), anthracite, gangue, coke, industrial waste, municipal waste, etc. Direct addition of desulfurizer such as limestone in the bed results in small investment and high desulfurization efficiency. International and domestic circulating vulcanization bed has entered the stage of large-scale and commercial production. Recirculating fluidized bed combustion is a new technology. The burning mode of special coal in boiler structure is essentially different from that of pulverized coal furnace. There is a certain gap in domestic installation technology compared with pulverized coal furnace. It is easy to cause coal cut-off in operation of circulating fluidized bed forming unit. The occurrence of coal cut-off is easy to cause bias burning and unbalanced combustion of boiler. In serious cases, MFT action of boiler will be triggered. Therefore, it is necessary to optimize the existing fuel control strategy to prevent coal burning caused by coal breaking in the circulating vulcanization bed unit.