TY - JOUR
T1 - Simulations of water vaporization in novel internal-intensified spouted beds
T2 - Multiphase-flow, heat and mass transfer
AU - Che, Xinxin
AU - Guo, Rong
AU - Wu, Feng
AU - Ren, Haibo
AU - Zhou, Wenjing
N1 - Publisher Copyright:
© 2022 The Korean Society of Industrial and Engineering Chemistry
PY - 2022/12/25
Y1 - 2022/12/25
N2 - Novel internal-intensified spouted beds (SBs) with swirl-nozzle anticlockwise-axial-swirler (SNAAS) and swirl-nozzle clockwise-axial-swirler (SNCAS) were proposed to improve the shortcomings of conventional SBs. The water vaporization in novel internal-intensified, conventional and swirl-nozzle SBs was simulated and the multiphase flow behavior and interphase heat and mass transfer in process were analyzed. Simulation results show the co-swirling action of novel combined internal-intensified makes gas drive particles move helically upward around the axial-swirler. Therefore, compared with conventional and swirler-nozzle SBs, the radial slip velocity of gas–solid and gas–liquid in two novel SBs are larger, and the contact between gas–liquid-solid phases is more sufficient. The gas–liquid-solid three-phase temperature, water vaporization rate, and gas moisture content of two novel internal-intensified all reached the highest, indicating that novel combined internal-intensified structures are beneficial to promoting the interphase heat and mass transfer during the water vaporization process. The mass transfer enhancement factors of SNAAS and SNCAS structures are 1.91 and 1.36 times that of conventional SB, respectively.
AB - Novel internal-intensified spouted beds (SBs) with swirl-nozzle anticlockwise-axial-swirler (SNAAS) and swirl-nozzle clockwise-axial-swirler (SNCAS) were proposed to improve the shortcomings of conventional SBs. The water vaporization in novel internal-intensified, conventional and swirl-nozzle SBs was simulated and the multiphase flow behavior and interphase heat and mass transfer in process were analyzed. Simulation results show the co-swirling action of novel combined internal-intensified makes gas drive particles move helically upward around the axial-swirler. Therefore, compared with conventional and swirler-nozzle SBs, the radial slip velocity of gas–solid and gas–liquid in two novel SBs are larger, and the contact between gas–liquid-solid phases is more sufficient. The gas–liquid-solid three-phase temperature, water vaporization rate, and gas moisture content of two novel internal-intensified all reached the highest, indicating that novel combined internal-intensified structures are beneficial to promoting the interphase heat and mass transfer during the water vaporization process. The mass transfer enhancement factors of SNAAS and SNCAS structures are 1.91 and 1.36 times that of conventional SB, respectively.
KW - Heat and mass transfer
KW - Multiphase flow
KW - Novel internal-intensified structures
KW - Swirl-nozzle axial-swirler SBs
KW - Water vaporization
UR - https://www.scopus.com/pages/publications/85139341453
U2 - 10.1016/j.jiec.2022.09.032
DO - 10.1016/j.jiec.2022.09.032
M3 - 文章
AN - SCOPUS:85139341453
SN - 1226-086X
VL - 116
SP - 411
EP - 427
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -