TY - GEN
T1 - Experimental research on the corner secondary air injection of square circulating fluidized bed
AU - Wang, Zhengyang
AU - Sun, Shaozeng
AU - Chen, Hao
AU - Wu, Shaohua
AU - Tan, Yufei
PY - 2010
Y1 - 2010
N2 - Corner secondary air injection which four nozzles respectively located on four corners of square circulating fluidized bed (CFB) was investigated in this study. The cold CFB model has a square cross-section of 0.25m×0.25m and a height of 6.07m. The axial pressure drop profile along the riser has been got by differential pressure measurement to evaluate the axial solids concentration distribution in different operating conditions. Solids concentration increases significantly below the secondary air injection ports especially when high secondary air rate is adopted. Using CO 2 as tracer, the dispersion of corner secondary air jet was investigated. It is found that if the solids concentration near nozzles' outlet is lean, the secondary air injection with high velocity will make a swirling flow in the riser. However, higher solids concentration distribution especially in the corner region will limit the penetration of secondary air injection and no apparent swirling flow was found in these conditions.
AB - Corner secondary air injection which four nozzles respectively located on four corners of square circulating fluidized bed (CFB) was investigated in this study. The cold CFB model has a square cross-section of 0.25m×0.25m and a height of 6.07m. The axial pressure drop profile along the riser has been got by differential pressure measurement to evaluate the axial solids concentration distribution in different operating conditions. Solids concentration increases significantly below the secondary air injection ports especially when high secondary air rate is adopted. Using CO 2 as tracer, the dispersion of corner secondary air jet was investigated. It is found that if the solids concentration near nozzles' outlet is lean, the secondary air injection with high velocity will make a swirling flow in the riser. However, higher solids concentration distribution especially in the corner region will limit the penetration of secondary air injection and no apparent swirling flow was found in these conditions.
KW - Corner secondary air injection
KW - Dispersion of secondary air
KW - Solids concentration
KW - Square circulating fluidized bed
UR - https://www.scopus.com/pages/publications/84870029058
U2 - 10.1109/APPEEC.2010.5449088
DO - 10.1109/APPEEC.2010.5449088
M3 - 会议稿件
AN - SCOPUS:84870029058
SN - 9781424448135
T3 - Asia-Pacific Power and Energy Engineering Conference, APPEEC
BT - 2010 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2010 - Proceedings
T2 - Asia-Pacific Power and Energy Engineering Conference, APPEEC 2010
Y2 - 28 March 2010 through 31 March 2010
ER -