Direct numerical simulations of polypropylene gasification in supercritical water
文献类型：期刊论文
| 作者 | Chi, Cheng1; Guan, Wei1,2; Ou, Zhisong3,4; Sundmacher, Kai5,6; Thevenin, Dominique1 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 35期号:6页码:- |
| ISSN号 | 1070-6631 |
| 英文摘要 | In order to reduce environmental pollution by plastic wastes, supercritical water gasification (SCWG) appears as a promising technology. The present study investigates the SCWG process of polypropylene (PP) plastic waste using particle-resolved direct numerical simulations (PR-DNS). A directional ghost-cell immersed boundary method has been used to solve the reacting boundary condition, including detailed molecular diffusion models. To validate the procedure, SCWG of a coal particle has been first investigated as a benchmark, analyzing in detail interphase momentum and heat and mass transfer, and chemical reactions are analyzed. Surface reactions and the resulting Stefan flow expand the boundary layer around the particle, impacting the efficiency of heat and mass transfer. Adding then a suitable reaction mechanism, SCWG of PP plastic wastes leading to combustible gases is analyzed by PR-DNS and found to be very efficient. The gasification temperature is an important parameter to control SCWG efficiency. To the authors' knowledge, this is the first PR-DNS study investigating the SCWG process for plastic wastes, and it provides interesting information regarding transfer processes and their limitations. |
| 学科主题 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001007920400022 |
| 出版者 | AIP Publishing |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35480]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Laboratory of Fluid Dynamics and Technical Flows, University of Magdeburg “Otto von Guericke”, D-39106 Magdeburg, Germany 2.Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 4.State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China 5.Laboratory of Process Systems Engineering, University of Magdeburg “Otto von Guericke”, D-39106 Magdeburg, Germany 6.Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, D-39106 Magdeburg, Germany |
| 推荐引用方式 GB/T 7714 | Chi, Cheng,Guan, Wei,Ou, Zhisong,et al. Direct numerical simulations of polypropylene gasification in supercritical water[J]. PHYSICS OF FLUIDS,2023,35(6):-. |
| APA | Chi, Cheng,Guan, Wei,Ou, Zhisong,Sundmacher, Kai,&Thevenin, Dominique.(2023).Direct numerical simulations of polypropylene gasification in supercritical water.PHYSICS OF FLUIDS,35(6),-. |
| MLA | Chi, Cheng,et al."Direct numerical simulations of polypropylene gasification in supercritical water".PHYSICS OF FLUIDS 35.6(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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