Computational Fluid Dynamics Modeling of Inter- Circulating Fluidized Bed

Computational fluid dynamics modeling

of inter- circulating fluidized bed

WANG Qiang ^1,2, MA Peisheng ¹, JIA Qingzhu ^1,2

1. College of Chemical Engineering, Tianjin University, Tianjin, 300074, China

2. College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China, wang_q@tust.edu.cn

Abstract

Fluidized beds are found in many plant operations in chemical, pharmaceutical, environmental protection and mineral industries. Despite their widespread applications, much of the development and design of fluidized bed reactors have been empirical as the complex flow behaviors of gas-liquid flow in these systems makes flow modeling a challenging task. The work in our group has been focused on inter-circulating fluidized bed (ICFB). The advantage of ICFB is highly efficient in mass transfer and reaction rate compare with CFB.

A new computational fluid dynamics modeling of ICFB has been proposed based on the theory of mass transfer and energy transfer as well as momentum transfer conservative rules. It is

Numerical solution of the model is obtained,

The simulated results are consistent with experiments.

Reference

1. N. Ngampradit, P. Piumsomboon, Simulation of a Circulating Fluidized Bed Combustor with Shrinking Core and Emission Models, ScienceAsia 30 (2004): 365-374

2. Gilbertson, M.A. and Yates, J.G., "The Motion of Particles Near a Bubble in a Gas-Fluidized Bed", J. Fluid. Mech., 323, 377-385 (1996).