CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection
文献类型：期刊论文
| 作者 | Chen, Sheng1,2; Fan, Yiping1; Yan, Zihan1; Wang, Wei2; Lu, Chunxi1 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 287期号:JAN页码:29-42 |
| 关键词 | Fluid Catalytic Cracking (FCC) Feedstock injection scheme Nozzle EMMS Secondary flow Computational Fluid Dynamics (CFD) |
| ISSN号 | 0032-5910 |
| 英文摘要 | The feedstock injection zone is a key section for Fluid Catalytic Cracking riser reactor. A 3-D Computational Fluid Dynamics simulation is performed by coupling the two-fluid model and the energy-minimization multi-scale (EMMS) drag. The prediction agrees well with the available data and the secondary flow phenomenon is captured. The simulation reveals that the M-shape distributed feed sprays interact with the W-shape distributed solid particles and then cause the undesirable W-shape distribution of the matching ratio of catalysts to feed. The transformation of such uneven distribution to the finally core-annular distribution heavily depends on the secondary flow, whereas its mechanism can be explained by using the Kutta-joukowski lift theorem. The increase of the feed spray velocity facilitates the feed diffusion and reduces the transition region. However, excessively high jet velocity may intensify the back-mixing near the wall and causes intense attrition or breakage of catalysts and thereby an increase of costs. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CIRCULATING FLUIDIZED-BED ; SECONDARY AIR INJECTION ; FILTERED 2-FLUID MODELS ; KINETIC-THEORY ; EMMS MODEL ; CONSTITUTIVE RELATIONS ; NUMERICAL-SIMULATION ; PARTICLE FLOWS ; MULTISCALE CFD ; COKE FORMATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000365363900004 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/19864]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.China Univ Petr, State Key Lab Heavy Oil, Beijing 102249, Peoples R China 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 | Chen, Sheng,Fan, Yiping,Yan, Zihan,et al. CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection[J]. POWDER TECHNOLOGY,2016,287(JAN):29-42. |
| APA | Chen, Sheng,Fan, Yiping,Yan, Zihan,Wang, Wei,&Lu, Chunxi.(2016).CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection.POWDER TECHNOLOGY,287(JAN),29-42. |
| MLA | Chen, Sheng,et al."CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection".POWDER TECHNOLOGY 287.JAN(2016):29-42. |
入库方式： OAI收割
来源：过程工程研究所
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