Knowledge Management System Of Institute of process engineering,CAS
| Experimental study on gas-solid mass transfer in circulating fluidized beds | |
| Alternative Title | Chin. J. Chem. Eng. |
| Wang, LN; Zhang, L; Jin, DJ; Li, JH | |
| 2002-02-01 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 10Issue:1Pages:70-76 |
| Abstract | This study is devoted to gas-solid mass transfer behavior in heterogeneous two-phase flow. Experiments were carried out in a cold circulating fluidized bed of 3.0m in height and 72mm in diameter with naphthalene particles. Axial and radial distributions of sublimated naphthalene concentration in air were measured with an on line concentration monitoring system HP GC-MS. Mass transfer coefficients were obtained under various operating conditions, showing that heterogeneous flow structure strongly influences the axial and radial profiles of mass transfer coefficients. In the bottom dense region, mass transfer rate is high due to intensive dynamic behavior and higher relative slip velocity between gas and clusters. In the middle transition region and the upper dilute region, as a result of low mass transfer driving force and the influence of flow structure, mass transfer rate distribution becomes non-uniform. In conclusion, among the operating parameters influencing mass transfer coefficients, the superficial gas velocity is the most important factor and the solid circulation rate should be also taken into account.; This study is devoted to gas-solid mass transfer behavior in heterogeneous two-phase flow. Experiments were carried out in a cold circulating fluidized bed of 3.0m in height and 72mm in diameter with naphthalene particles. Axial and radial distributions of sublimated naphthalene concentration in air were measured with an on line concentration monitoring system HP GC-MS. Mass transfer coefficients were obtained under various operating conditions, showing that heterogeneous flow structure strongly influences the axial and radial profiles of mass transfer coefficients. In the bottom dense region, mass transfer rate is high due to intensive dynamic behavior and higher relative slip velocity between gas and clusters. In the middle transition region and the upper dilute region, as a result of low mass transfer driving force and the influence of flow structure, mass transfer rate distribution becomes non-uniform. In conclusion, among the operating parameters influencing mass transfer coefficients, the superficial gas velocity is the most important factor and the solid circulation rate should be also taken into account. |
| Keyword | Mass Transfer Circulating Fluidized Bed Gas-solid Heterogeneous Flow |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MULTI-PARTICLE SYSTEMS ; TRANSPORT PHENOMENA ; MODEL |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000174602500010 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/5650 |
| Collection | 研究所（批量导入） |
| Affiliation | Chinese Acad Sci, Inst Proc Engn, Multiphase React Lab, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, LN,Zhang, L,Jin, DJ,et al. Experimental study on gas-solid mass transfer in circulating fluidized beds[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2002,10(1):70-76. |
| APA | Wang, LN,Zhang, L,Jin, DJ,&Li, JH.(2002).Experimental study on gas-solid mass transfer in circulating fluidized beds.CHINESE JOURNAL OF CHEMICAL ENGINEERING,10(1),70-76. |
| MLA | Wang, LN,et al."Experimental study on gas-solid mass transfer in circulating fluidized beds".CHINESE JOURNAL OF CHEMICAL ENGINEERING 10.1(2002):70-76. |
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| File Name/Size | DocType | Version | Access | License | ||
| ExperimentalStud_省略_（401KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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