化工学报2019，Vol.70Issue(8)：3167-3176,10.DOI:10.11949/0438-1157.20190192
双流化床生物质气化的三维全循环数值模拟
Three-dimensional full-loop simulation of biomass gasification in dual fluidized bed
孔大力 1罗坤 1林俊杰 1王帅 1胡陈枢 1李德波 2樊建人1
作者信息
- 1. 浙江大学能源清洁利用国家重点实验室,浙江杭州310027
- 2. 广东电科院能源技术有限责任公司,广东广州510080
- 折叠
摘要
Abstract
A three-dimensional full-loop simulation of biomass gasification in an industry-scale dual fluidized bed is conducted based on the MP-PIC (multi-phase particle-in-cell) method. In this method, the parcel motion is descript under Lagrangian framework while the gas turbulence is solved by large-eddy simulation (LES), meanwhile, the complex gas-solid interaction, pyrolysis, gasification and homogeneous/heterogeneous reactions are considered simultaneously. Firstly, the independence of grids and particles per parcel (PPP) is conducted, and the numerical results agree well with the experimental data. Secondly, the gas-solid flow characteristics and syngas distributions in dual fluidized bed are revealed and the effects of bed temperature, biomass particle number and drag force correlation on syngas production are analyzed. The results show that the temperature increases, the CO mole fraction at the outlet increases, and the remaining components decrease; the gasification effect of the smaller biomass particle size is better than the larger biomass particle size. The drag model has a negligible effect on the syngas production.关键词
MP-PIC/双流化床/生物质气化/数值模拟Key words
MP-PIC/ dual fluidized bed/ biomass gasification/ numerical simulation分类
能源科技引用本文复制引用
孔大力,罗坤,林俊杰,王帅,胡陈枢,李德波,樊建人..双流化床生物质气化的三维全循环数值模拟[J].化工学报,2019,70(8):3167-3176,10.
