Reactive particle-laden flow in industrial-scale supercritical water gasification reactor: Modeling and study on flow patterns
文献类型：期刊论文
| 作者 | Wang, Yingdong1; Ou, Zhisong2; Jin, Hui1; Shang, Fei1; Guo, Shenghui1 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 443页码:13 |
| 关键词 | Thermally integrated supercritical water gasification reactor Flow pattern Reactive particle-laden flow Porous media model |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2024.119946 |
| 英文摘要 | Coal gasification in supercritical water (SCW) is a highly complicated reactive particle-laden flow process, which couples multiphase flow hydrodynamics, conjugate heat transfers, and complex chemical reactions. A quantitative understanding is the key issue for reactor design and optimization. In this study, the Eulerian-Eulerian model is used to describe the particles-SCW flow in a novel industrial-scale thermally integrated supercritical water gasification (TISCWG) reactor with conjugate heat transfer boundary conditions and porous media model. The sophisticated chemical reactions are using a species transport model with a seven-step lumped kinetics. Four zones of the TISCWG reactor and four typical flow patterns in the gasification chamber are firstly revealed as 1) the bottom accumulation region with the nonhomogeneous solids distribution and back-mixing of particles, 2) the upper developed fluidization region with the SCW and coal particles moving in a plug-flow regime in the center and a downward annular gravity-driven flow near the wall, 3) the jet-affected region strongly affected by the vortexes near the nozzle and presented as a trans-critical jet regime and 4) the dilute region where dilute solids slow down and fall back into the gasification zone. Flow in the gasification chamber is strongly affected by the heat transfer with the preheat zone, as reflected by an annular gravity-driven flow film flowing downwards near the gasification wall. A funnel-shaped structure promotes a more uniform distribution of solids in the accumulation region rather than a cylindrical structure. The effect of flow patterns on coal gasification processes is also studied. Volatile pyrohydrolysis reactions depend on the time-varying solids distribution and the gaseous products at the system outlet with a typical H 2 mole fraction of 61.42% and CO 2 of 34.98%. |
| 资助项目 | National Key Research and Development Program of China[2020YFA0714400] ; Shaanxi Science & Technology Co-ordination & Innovation Project[2024GX-YBXM- 518] ; National Natural Science Foundation of China[52300183] ; National Funding Program for Postdoctoral Researchers ; Special Research Assistant Program of the Chinese Academy of Science |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001251423000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41761]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Jin, Hui |
| 作者单位 | 1.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn SKLMF, Xian 710049, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Xiaohongshan 2, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yingdong,Ou, Zhisong,Jin, Hui,et al. Reactive particle-laden flow in industrial-scale supercritical water gasification reactor: Modeling and study on flow patterns[J]. POWDER TECHNOLOGY,2024,443:13. |
| APA | Wang, Yingdong,Ou, Zhisong,Jin, Hui,Shang, Fei,&Guo, Shenghui.(2024).Reactive particle-laden flow in industrial-scale supercritical water gasification reactor: Modeling and study on flow patterns.POWDER TECHNOLOGY,443,13. |
| MLA | Wang, Yingdong,et al."Reactive particle-laden flow in industrial-scale supercritical water gasification reactor: Modeling and study on flow patterns".POWDER TECHNOLOGY 443(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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