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Study on Hydrodynamic Characterisitics of Gas-Liquid-Solid BubbleColumn in the Context of Binary Mixture of Particles(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2017年04期
Page:
59-
Research Field:
能源与机械工程
Publishing date:

Info

Title:
Study on Hydrodynamic Characterisitics of Gas-Liquid-Solid BubbleColumn in the Context of Binary Mixture of Particles
Author(s):
Li Weiling1; 2
(1. School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China)(2.School of Energy and Environment,Southeast University,Nanjing 210096,China)
Keywords:
particle mixture; gas-liquid-solid bubble column; gas-liquid-solid flow; numerical simulation
PACS:
O359
DOI:
10.3969/j.issn.1672-1292.2017.04.010
Abstract:
A mathematical model is built to describe the flow behaviors of the gas,liquid,solid of 2 particles. Numerical computations are conducted to investigate the effects of a binary mixture of particles having the same densities but different sizes,and a binary mixture of particles having the same sizes but different densities on the hydrodynamics of bubble column. Results indicate that the particles are fluidized easier at the bottom of the bed when adding larger size particles,and the particles with smaller sizes are also fluidized easier. The fluidization of the particles is promoted when adding the lighter particles. The particle density has a large influence on the gas holdup in the lower section of the bed,where the gas holdup decreases when the particle density becomes greater.

References:

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Last Update: 2017-12-30