MP-PIC simulation of the effects of spent catalyst distribution and horizontal baffle in an industrial FCC regenerator. Part I: Effects on hydrodynamics
文献类型：期刊论文
| 作者 | Yang, Zhijun1,3; Zhang, Yongmin1; Oloruntoba, Adefarati1; Yue, Junrong2 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2021-05-15 |
| 卷号 | 412页码:16 |
| 关键词 | FCC Regenerator Spent catalyst distribution Horizontal baffle MP-PIC simulation Hydrodynamics |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2021.128634 |
| 英文摘要 | Improving distribution uniformity of spent catalyst and adding horizontal baffles are two effective measures to improve the regeneration performance of a fluid catalytic cracking (FCC) unit. In this study, an industrial coaxial compact FCC regenerator is simulated using a Eulerian- Lagrangian multi-phase particle in cell (MP-PIC) method. By using the energy-minimization multi-scale (EMMS) drag model based on turbulent flow regime, the MP-PIC simulation predicts the typical solids fraction profile which is in good agreement with industrial data. The Crosser grid (a typical horizontal baffle) is successfully constructed with the help of ?virtual baffles? in simulation. The simulation results show that, after adding Crosser grid (a new horizontal fluidized bed baffle by our group), the bed height increases slightly, the lateral mal-distribution index of solids decreases and the descending flux of spent catalysts decreases significantly. The distribution uniformity of spent catalyst distribution along the bed cross section is more uniform when spent catalyst particles are distributed more uniformly. The presence of gas cushion beneath the Crosser grid allows it to act as a pseudo gas distributor, eliminating gas channeling and decreasing zones of low fluidization quality. The rising bubbles are absorbed by the gas cushion and new small bubbles are generated above the Crosser grid, thereby strengthening the gas?solid contact. The guiding vanes of Crosser grid accelerate the lateral movement of particles. The Crosser grid also proves its stronger suppression on the axial back-mixing of solids. |
| 资助项目 | National Natural Science Foundation of China[21276273] ; Science Foundation of China University of Petroleum, Beijing[2462015YQ0312] ; Science Foundation of China University of Petroleum, Beijing[C201606] ; National Key Research and Development Program[2018YFF01011400] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000637695900001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Science Foundation of China University of Petroleum, Beijing ; National Key Research and Development Program |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/48393]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhang, Yongmin |
| 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 3.SINOPEC, Dalian Res Inst Petr & Petrochem, Dalian 116045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Zhijun,Zhang, Yongmin,Oloruntoba, Adefarati,et al. MP-PIC simulation of the effects of spent catalyst distribution and horizontal baffle in an industrial FCC regenerator. Part I: Effects on hydrodynamics[J]. CHEMICAL ENGINEERING JOURNAL,2021,412:16. |
| APA | Yang, Zhijun,Zhang, Yongmin,Oloruntoba, Adefarati,&Yue, Junrong.(2021).MP-PIC simulation of the effects of spent catalyst distribution and horizontal baffle in an industrial FCC regenerator. Part I: Effects on hydrodynamics.CHEMICAL ENGINEERING JOURNAL,412,16. |
| MLA | Yang, Zhijun,et al."MP-PIC simulation of the effects of spent catalyst distribution and horizontal baffle in an industrial FCC regenerator. Part I: Effects on hydrodynamics".CHEMICAL ENGINEERING JOURNAL 412(2021):16. |
入库方式： OAI收割
来源：过程工程研究所
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