Paper Title:
Three-Dimensional Simulation of Gas-Solid Flow in the Biomass Circulating Fluidized Bed Gasifier’s Riser
  Abstract

Using the Gidaspow model as the momentum exchange coefficient to take a full-loop simulation of miniature circulating fluidized bed gasifier (CFBG) in the lab, and taking mutual influence of different parts in consideration, it focus on the gas-solid flow structure in the riser in this paper. The heterogeneous behavior in the CFBG riser and the radial profiles of solid volume fraction under different solid inventories in simulation are showed in this paper as a replenishment of certain data which are hard to measure in experiments. The results showed it can’t form an obvious core-annulus flow because of the riser’s high height-diameter ratio and the big refeed line diameter. There are clusters growing and dissipation in a short time. A turning point of pressure drop may be seem as a separation of dense area and dilute area.The three-dimensional (3D) simulation revealed the solid flux and the pressure drop agree with the experimental data.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 26: Modeling, Analysis, and Simulation of Manufacturing Processes III
Edited by
Wu Fan
Pages
6537-6542
DOI
10.4028/www.scientific.net/AMR.383-390.6537
Citation
W. Y. Chen, X. Liu, X. X. Fan, L. Z. Chu, Y. M. Yang, W. T. Liu, "Three-Dimensional Simulation of Gas-Solid Flow in the Biomass Circulating Fluidized Bed Gasifier’s Riser", Advanced Materials Research, Vols. 383-390, pp. 6537-6542, 2012
Online since
November 2011
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