Investigation into fluctuating anisotropy for biomass gasification in bubbling fluidized bed gasifier

被引：8

作者：

Chen, Juhui ^{[1
,2
]}

Shi, Xiao ^{[1
]}

Wang, Shuai ^{[3
]}

Li, Jiahao ^{[1
]}

Hu, Ting ^{[2
]}

Lin, Feng ^{[2
]}

Liu, Minghao ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Mech Engn, Harbin 150080, Heilongjiang, Peoples R China

[2] China Shipbldg Ind Corp, Res Inst 703, Harbin 150001, Heilongjiang, Peoples R China

[3] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2018年 / 138卷

基金：

中国国家自然科学基金; 中国博士后科学基金; 黑龙江省自然科学基金;

关键词：

Fluctuating anisotropy; Second-order moment model; Turbulence; Biomass gasification; Bubbling fluidized bed; EDDY DISSIPATION CONCEPT; 2ND-ORDER MOMENT METHOD; GAS-PARTICLE FLOW; KINETIC-THEORY; SIMULATION; MODEL; RISER; PYROLYSIS; COAL; OPTIMIZATION;

D O I：

10.1016/j.applthermaleng.2018.01.014

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Based on the Kinetic Theory of Granular Flow (KTGF), the second-order moment (SOM) model is developed for particles phases considering the anisotropy of fluctuating velocity in biomass gasification process. Coupled with chemical kinetics method, the chemical reactions of biomass gasification are described and the fluctuating anisotropy of particles is analyzed in bubbling fluidized bed (BFB). The simulated molar fractions of gas species are in good agreement with experimental data, and the comparisons with KTGF model and SOM model are simulated. The instantaneous fluidization process in BFB is analyzed, and the SOM and fluctuating anisotropy for biomass gasification is investigated. The mean value of second-order moment is higher while the fluctuating anisotropy is lower for the particles with lager diameter in computational domain. (C) 2018 Published by Elsevier Ltd.

引用

页码：774 / 782

页数：9

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