Numerical study of flow maldistribution and depressurization strategies in a small-scale axial adsorber
文献类型：期刊论文
| 作者 | Liu, Yingshu1; Zheng, Xingang1,2; Dai, Ruifeng3 |
| 刊名 | ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 20期号:5-6页码:757-768 |
| 关键词 | Mathematical modeling Adsorption Packed bed Transport processes Flow maldistribution Distributor |
| ISSN号 | 0929-5607 |
| 其他题名 | Adsorpt.-J. Int. Adsorpt. Soc. |
| 中文摘要 | Flow maldistribution and local high velocity in an axial adsorber is numerically studied to investigate the potential occurrence of sorbent pulverization and uneven utility. A considerable maldistribution induced by the entrance effect and local high velocity caused by rapid gas discharge during depressurization is observed. Three types of gas distributors and different depressurization strategies are then proposed and studied to determine their capabilities to create uniform velocity profiles. Results show that locating the predistributor in the dead zone is critical to flow distribution. The maldistribution factor (Mf) can decrease to a minimum of 0.055 when a perforated inlet plenum is used with a conventional distributor. In addition, the internal ring can effectively reduce wall effects. Moreover, both gas expansion and desorption have a significant influence on the evolution of local velocity during depressurization. In this step, local high velocity can possibly exceed incipient fluidization velocity and cause attrition and pulverization of the sorbent. To a certain extent, employing methods to control the depressurization rate is necessary. Applying linear depressurization () or downward convex conic depressurization () can reduce local high velocity, and thus, improve flow conditions. |
| 英文摘要 | Flow maldistribution and local high velocity in an axial adsorber is numerically studied to investigate the potential occurrence of sorbent pulverization and uneven utility. A considerable maldistribution induced by the entrance effect and local high velocity caused by rapid gas discharge during depressurization is observed. Three types of gas distributors and different depressurization strategies are then proposed and studied to determine their capabilities to create uniform velocity profiles. Results show that locating the predistributor in the dead zone is critical to flow distribution. The maldistribution factor (Mf) can decrease to a minimum of 0.055 when a perforated inlet plenum is used with a conventional distributor. In addition, the internal ring can effectively reduce wall effects. Moreover, both gas expansion and desorption have a significant influence on the evolution of local velocity during depressurization. In this step, local high velocity can possibly exceed incipient fluidization velocity and cause attrition and pulverization of the sorbent. To a certain extent, employing methods to control the depressurization rate is necessary. Applying linear depressurization () or downward convex conic depressurization () can reduce local high velocity, and thus, improve flow conditions. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Engineering, Chemical |
| 研究领域[WOS] | Chemistry ; Engineering |
| 关键词[WOS] | PACKED-BED ; ADSORPTION ; COLUMNS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000339103300010 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/10944]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Univ Sci & Technol, Sch Mech Engn, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing, Peoples R China 3.China ENFI Engn Corp, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yingshu,Zheng, Xingang,Dai, Ruifeng. Numerical study of flow maldistribution and depressurization strategies in a small-scale axial adsorber[J]. ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY,2014,20(5-6):757-768. |
| APA | Liu, Yingshu,Zheng, Xingang,&Dai, Ruifeng.(2014).Numerical study of flow maldistribution and depressurization strategies in a small-scale axial adsorber.ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY,20(5-6),757-768. |
| MLA | Liu, Yingshu,et al."Numerical study of flow maldistribution and depressurization strategies in a small-scale axial adsorber".ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY 20.5-6(2014):757-768. |
入库方式： OAI收割
来源：过程工程研究所
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