文献类型：期刊文献

英文题名：Numerical and experimental investigations on gas-particle flow behaviors of the Opposed Multi-Burner Gasifier

作者：Ni, Jianjun[1];Liang, Qinfeng[1];Zhou, Zhijie[1];Dai, Zhenghua[1];Yu, Guangsuo[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat, Shanghai 200237, Peoples R China

年份：2009

卷号：50

期号：12

起止页码：3035

外文期刊名：ENERGY CONVERSION AND MANAGEMENT

收录：;EI(收录号：20094012361583);WOS:【SCI-EXPANDED(收录号:WOS:000271178600020)】；

基金：Funding for this work is partly supported by National Key State Basic Research Development Program of China (973 Program, 2004CB217703), Shanghai Shuguang Training Program for the Talents (06SG34), Program for New Century Excellent Talents in University (NCET-06-0416), Program for Changiiang Scholars and Innovative Research Team in University (IRT 0620) and National Nature Science Foundation of China (20876048).

语种：英文

外文关键词：Opposed Multi-Burner Gasifier; Multiphase flow; Eulerian-Lagrangian model; Inter-particle collision; Particle dispersion; Computational fluid dynamic

摘要：Numerical and experimental study on the gas-particle flow field has been carried out in the large Opposed Multi-Burner (OMB) Gasifier (I.D. 1.0 m) at high temperature and pressure. A 3D numerical model based on the Eulerian-Lagrangian model is used to simulate the gas-particle flow behaviors. The gas phase is treated as continuous phase with an Eulerian method while the Lagrangian method is applied to trace of the particles, and the interaction between gas and particles is considered. The behavior of slag/ash particle collision and its effects on particle dispersion are presented. The simulations are validated by available experimental data. The results showed that material residence time increased with the straight section height above the burner, and the deposition flux increased with the inlet velocity. The axis profiles of particle concentrations at high temperature and pressure have the similar characteristic shapes to those at ambient pressure and temperature. And the highest turbulence intensity and collision flame are converged around the centre of impingement zone. Though the inter-particle collision led to the phenomenon of particle agglomeration, the holistic distribution of particle concentration was reasonable. Finally, the effect of operating pressure and particles Stokes number were studied. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.