CFD optimization of feedstock injection angle in a FCC riser
文献类型：期刊论文
| 作者 | Chen, Sheng1,2; Fan, Yiping1; Yan, Zihan1; Wang, Wei2; Liu, Xinhua2; Lu, Chunxi1 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2016-10-22 |
| 卷号 | 153期号:OCT页码:58-74 |
| 关键词 | Fluid Catalytic Cracking (FCC) Feedstock injection zone Energy-Minimization Multi-Scale (EMMS) Residence Time Distribution (RTD) Computational Fluid Dynamics (CFD) |
| ISSN号 | 0009-2509 |
| 英文摘要 | Feedstock injection zone is a key section for fluid catalytic cracking (FCC) riser reactor. In conventional design of commercial FCC risers, the injection angle of the feedstock is 30 degrees upward with the riser axis, which is found to easily cause nonuniform oil-catalyst contact and severe back-mixing in the feedstock injection zone. In this work, the effect of feedstock injection angle is investigated by performing 3-D simulations with seven injection configurations including three inclined upward, one horizontally and three inclined downward. The two-fluid model (TFM) and the energy-minimization multi-scale (EMMS) drag is combined in simulations. Comparison with experimental data is conducted in terms of the profiles of solids and feed volume fractions. Several variables including the backflow ratio, the radial nonuniformity index and the mean residence time of feed, are further introduced to quantify the hydrodynamic dependence of flow and mixing on the injection settings. It is found that the downward injection schemes are better to realize uniform mixing and matching between catalysts and feed than the upward injection schemes. A 30 degrees downward injection angle is desired to improve the distributions of catalysts and feed, reduce the catalyst-feed contacting time and eliminate the effect of secondary flow on severe back-mixing near the riser wall. (C) 2016 Elsevier Ltd. 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] | SOLID 2-PHASE FLOW ; CIRCULATING FLUIDIZED-BED ; FILTERED 2-FLUID MODELS ; GAS-PARTICLE FLOWS ; HEAVY OIL RISER ; NUMERICAL-SIMULATION ; EMMS MODEL ; CONSTITUTIVE RELATIONS ; CRACKING REACTION ; MULTIPHASE FLOW |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000381924900006 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21290]  |
| 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 Proc, 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 optimization of feedstock injection angle in a FCC riser[J]. CHEMICAL ENGINEERING SCIENCE,2016,153(OCT):58-74. |
| APA | Chen, Sheng,Fan, Yiping,Yan, Zihan,Wang, Wei,Liu, Xinhua,&Lu, Chunxi.(2016).CFD optimization of feedstock injection angle in a FCC riser.CHEMICAL ENGINEERING SCIENCE,153(OCT),58-74. |
| MLA | Chen, Sheng,et al."CFD optimization of feedstock injection angle in a FCC riser".CHEMICAL ENGINEERING SCIENCE 153.OCT(2016):58-74. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。