CFD simulation of mesoscale structures in mono and bidispersed fluidized bed pyrolysis reactors
文献类型：期刊论文
| 作者 | Shahzad, Saqib1; Nadeem, Muhammad1; Hamid, Adnan1; Fei, Li2; Ullah, Atta1 |
| 刊名 | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 162页码:9 |
| 关键词 | Pyrolysis reactor CFD Gas -solid Heterogeneity |
| ISSN号 | 0165-2370 |
| DOI | 10.1016/j.jaap.2022.105459 |
| 英文摘要 | Pyrolysis of biomass and organic matter in fluidized bed reactors have become popular in recent years due to the efficient conversion of biomass to bio-fuels. Among others, the presence of mesoscale structures produced by the transient nature of gas solid flow governs the performance of fluidized bed reactors. In the present study, monodispersed system with the particle size of 155 mu m and bidispersed system with particle sizes of 128 and 1500 mu m are simulated by the multi-fluid model with the kinetic theory of granular flow closure laws. The objective is to investigate the effect of size distribution and solid volume fraction on the hydrodynamics of gassolid flows. The ANSYS Fluent (R) software is used for the simulations and the slip velocity, heterogeneity index as well as mixing index are investigated. A two dimensional fully periodic domain is used to investigate the slip velocity at five different solid concentrations in dilute range. The slip velocity, which represents the interaction between solid particles and gas, calculated by simulation is higher than that calculated through RichardsonZaki's correlation. The mixing index is found to be minimum for a solid volume concentration of 5%. The heterogeneity index is significantly less than 1 for both cases with bidisperesed system having lower value as compared to monodispersed system. The image analysis of solid fraction contours exhibits that mesoscale structures are dense and non-uniform for solid fractions of 0.05 and are small and uniform of solid fractions of 0.025 and 0.075. |
| WOS关键词 | PARTICLE-SIZE ; MODEL ; BIOMASS ; FLOW ; GASIFICATION ; EQUATIONS ; LONG ; DEM |
| 资助项目 | Pakistan Science Foundation (PSF)[PSF-NSFC-IV/Eng/C-PIEAS (25)] ; National Natural Science Foundation of China[22161142006] ; Pakistan Institute of Engi-neering and Applied Sciences (PIEAS) |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000793153700004 |
| 出版者 | ELSEVIER |
| 资助机构 | Pakistan Science Foundation (PSF) ; National Natural Science Foundation of China ; Pakistan Institute of Engi-neering and Applied Sciences (PIEAS) |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53287]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Ullah, Atta |
| 作者单位 | 1.Pakistan Inst Engn & Appl Sci PIEAS, Dept Chem Engn, PO Nilore, Islamabad 45650, Pakistan 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shahzad, Saqib,Nadeem, Muhammad,Hamid, Adnan,et al. CFD simulation of mesoscale structures in mono and bidispersed fluidized bed pyrolysis reactors[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2022,162:9. |
| APA | Shahzad, Saqib,Nadeem, Muhammad,Hamid, Adnan,Fei, Li,&Ullah, Atta.(2022).CFD simulation of mesoscale structures in mono and bidispersed fluidized bed pyrolysis reactors.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,162,9. |
| MLA | Shahzad, Saqib,et al."CFD simulation of mesoscale structures in mono and bidispersed fluidized bed pyrolysis reactors".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 162(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
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