TY - JOUR
T1 - Fluidization of Particles in Supercritical Water
T2 - A Comprehensive Study on Bubble Hydrodynamics
AU - Huang, Jikai
AU - Lu, Youjun
AU - Wang, Hao
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/2/6
Y1 - 2019/2/6
N2 - The supercritical water fluidized bed (SCWFB) is a new concept of reactor for coal and biomass gasification without releasing pollutants. In this paper, a special dual-capacitance probe measurement system is developed and a comprehensive study on bubble hydrodynamics in SCWFB is carried out. Four groups of particles with different mean diameters were fluidized by supercritical water with the pressure ranges from 20 to 27 MPa and temperature ranges from 410 to 570 °C. The effect of operating parameters on bubble size, frequency, and rising velocity is discussed in detail. Special rules of bubble hydrodynamics are observed, and the theoretical mechanisms are revealed. New predicting correlations of bubble diameter and bubble rising velocity are proposed. The results in this paper expand the research of fluidization under extreme operating conditions and also provide useful guidance for the optimization of the reactor.
AB - The supercritical water fluidized bed (SCWFB) is a new concept of reactor for coal and biomass gasification without releasing pollutants. In this paper, a special dual-capacitance probe measurement system is developed and a comprehensive study on bubble hydrodynamics in SCWFB is carried out. Four groups of particles with different mean diameters were fluidized by supercritical water with the pressure ranges from 20 to 27 MPa and temperature ranges from 410 to 570 °C. The effect of operating parameters on bubble size, frequency, and rising velocity is discussed in detail. Special rules of bubble hydrodynamics are observed, and the theoretical mechanisms are revealed. New predicting correlations of bubble diameter and bubble rising velocity are proposed. The results in this paper expand the research of fluidization under extreme operating conditions and also provide useful guidance for the optimization of the reactor.
UR - https://www.scopus.com/pages/publications/85061201727
U2 - 10.1021/acs.iecr.8b05103
DO - 10.1021/acs.iecr.8b05103
M3 - 文章
AN - SCOPUS:85061201727
SN - 0888-5885
VL - 58
SP - 2036
EP - 2051
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 5
ER -