Date:

2025-04-30

Title of Paper:

Minimum fluidization velocities for supercritical water fluidized bed within the range of 633-693K and 23-27MPa

Journal:

Int J Multiphase Flow

Summary:

Supercritical water fluidized bed is a new reactor concept for biomass gasification. In this paper, an experimental
study on the hydrodynamics of a supercritical water fluidized bed was conducted. The frictional pressure drops of a fixed bed and a fluidized bed were measured for a temperature ranging from 633 to 693 K and pressure ranging from 23 to 27 MPa. The results show that the Ergun formula for calculating the frictional pressure drop of a fixed bed can still be applied in supercritical water conditions. The average deviation between Ergun formula and experiment results is 13.3%. A predicting correlation for the minimum fluidization velocity in a supercritical water fluidized bed was obtained based on the experimental results of a fixed bed and the fluidized bed pressure drop. The average error between the correlation and experiment results was about 3.1%. The results in this paper are useful for the design of SCW fluidized bed.

Co-author:

Y. J. Lu, L. Zhao, Q. Han, L. P. Wei

Volume:

49

Page Number:

78-82

Translation or Not:

No

Date of Publication:

2012-10-18