| CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection | |
| Chen, Sheng1,2; Fan, Yiping1; Yan, Zihan1; Wang, Wei2; Lu, Chunxi1 | |
| 2016 | |
| Source Publication | POWDER TECHNOLOGY
 |
| ISSN | 0032-5910 |
| Volume | 287Issue:JANPages:29-42 |
| Abstract | 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. |
| Keyword | Fluid Catalytic Cracking (Fcc) Feedstock Injection Scheme Nozzle Emms Secondary Flow Computational Fluid Dynamics (Cfd) |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.powtec.2015.09.005 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | CIRCULATING FLUIDIZED-BED ; SECONDARY AIR INJECTION ; FILTERED 2-FLUID MODELS ; KINETIC-THEORY ; EMMS MODEL ; CONSTITUTIVE RELATIONS ; NUMERICAL-SIMULATION ; PARTICLE FLOWS ; MULTISCALE CFD ; COKE FORMATION |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Key Basic Research Development Program of China (973 Program)(2012CB215000) ; National Natural Science Foundation of China(91334204) |
| WOS ID | WOS:000365363900004 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/19864 |
| Collection | 多相复杂系统国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| CFD simulation of ga（3794KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment