# [1]郝英立,许忠林,刘升.多喷嘴对置式煤气化炉内气固两相流动及壁面沉积[J].东南大学学报(自然科学版),2008,38(3):461-467.[doi:10.3969/j.issn.1001-0505.2008.03.019] 　Hao Yingli,Xu Zhonglin,Liu Sheng.Gas-solid two-phase flows and particle deposition on internal wall in coal gasifier with multi opposed injectors[J].Journal of Southeast University (Natural Science Edition),2008,38(3):461-467.[doi:10.3969/j.issn.1001-0505.2008.03.019] 点击复制 多喷嘴对置式煤气化炉内气固两相流动及壁面沉积() 分享到： var jiathis_config = { data_track_clickback: true };

38

2008年第3期

461-467

2008-05-20

## 文章信息/Info

Title:
Gas-solid two-phase flows and particle deposition on internal wall in coal gasifier with multi opposed injectors

Author(s):
School of Energy and Environment, Southeast University, Nanjing 210096, China

Keywords:

O359
DOI:
10.3969/j.issn.1001-0505.2008.03.019

Abstract:
The numerical simulation of gas-solid two-phase flows in a coal gasifier with multi opposed injectors of domestic intellectual property was carried out. A model based on Eulerian-Lagrangian approach for the gas-solid two-phase flows in the gasifier was proposed after reasonable simplifications and hypotheses. The realizable k-ε model was used to simulate the complex turbulent gas flow while the coal particle trajectories were calculated by Lagrangian method. The velocity vectors of gas and solid phases, the distribution of volume fraction of particle, and the trajectories of particle in the gasifier were obtained. The distribution of deposition flux of particle on the internal wall was also obtained. The characteristics of gas-solid two-phase flows in the entrained-flow coal gasifier were revealed. The effects of the inlet velocity and the height of section above the injectors on the gas-solid flows and the particle deposition on the internal wall were numerically analyzed. The results indicate that the opposed impinging flow remarkably affects the turbulence of gas-solid flows and enhances the interactions between gas and solid phases causing the particles to disperse which benefits the chemical reactions. It is also shown that the deposition flux is bigger in the walls nearby the nozzles and at the top.

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