Estimating radial voidage profiles for all fluidization regimes in circulating fluidized bed risers
文献类型：期刊论文
| 作者 | Xu, GW; Sun, GG; Gao, SQ |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2004-01-14 |
| 卷号 | 139期号:2页码:186-192 |
| ISSN号 | 0032-5910 |
| 关键词 | fluidization radial voidage profile hydrodynamics regime transition modeling |
| 其他题名 | Powder Technol. |
| 中文摘要 | In terms of variation characteristics of radial voidage profiles, we had identified that all fluidization regimes from minimum fluidization to pneumatic transport prevailing in circulating fluidized bed (CFB) risers can be grossly divided into two distinctive variational regions, the dense phase continuous bubbling flow region and the dilute phase continuous clustering flow region, at a cross-sectionally averaged voidage of 0.75 [Powder Technol. 101 (1999) 91]. Succeeding that work, this article is devoted to further estimating the radial voidage profiles in two such distinctive variational regions by concerning the case of circular circulating fluidized bed risers. A new correlation was proposed for the dense phase continuous bubbling flow region, while the equation of Zhang et al. [Chem. Eng. Sci. 46 (1991) 3045] was considered applicable to the dilute phase continuous clustering flow region. Further improving the equation of Zhang et al. according to the result obtained in our last report ensured the continuity between the two correlations. In addition, the article also highlighted the formation mechanics of the two distinctive variational regions for radial voidage profiles in terms of the different gas/particle hydrodynamic behaviors in bubbling and clustering flows. (C) 2004 Elsevier B.V. All rights reserved. |
| 英文摘要 | In terms of variation characteristics of radial voidage profiles, we had identified that all fluidization regimes from minimum fluidization to pneumatic transport prevailing in circulating fluidized bed (CFB) risers can be grossly divided into two distinctive variational regions, the dense phase continuous bubbling flow region and the dilute phase continuous clustering flow region, at a cross-sectionally averaged voidage of 0.75 [Powder Technol. 101 (1999) 91]. Succeeding that work, this article is devoted to further estimating the radial voidage profiles in two such distinctive variational regions by concerning the case of circular circulating fluidized bed risers. A new correlation was proposed for the dense phase continuous bubbling flow region, while the equation of Zhang et al. [Chem. Eng. Sci. 46 (1991) 3045] was considered applicable to the dilute phase continuous clustering flow region. Further improving the equation of Zhang et al. according to the result obtained in our last report ensured the continuity between the two correlations. In addition, the article also highlighted the formation mechanics of the two distinctive variational regions for radial voidage profiles in terms of the different gas/particle hydrodynamic behaviors in bubbling and clustering flows. (C) 2004 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000189093700013 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4930]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, GW,Sun, GG,Gao, SQ. Estimating radial voidage profiles for all fluidization regimes in circulating fluidized bed risers[J]. POWDER TECHNOLOGY,2004,139(2):186-192. |
| APA | Xu, GW,Sun, GG,&Gao, SQ.(2004).Estimating radial voidage profiles for all fluidization regimes in circulating fluidized bed risers.POWDER TECHNOLOGY,139(2),186-192. |
| MLA | Xu, GW,et al."Estimating radial voidage profiles for all fluidization regimes in circulating fluidized bed risers".POWDER TECHNOLOGY 139.2(2004):186-192. |
入库方式： OAI收割
来源：过程工程研究所
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