Investigation of particle flow behaviors in a simplified downcomer of multistage fluidized bed

被引：3

作者：

Chen, Cheng ^{[1
]}

Yang, Yao ^{[1
]}

Huang, Zhengliang ^{[1
]}

Sun, Jingyuan ^{[1
]}

Wang, Jingdai ^{[2
]}

Yang, Yongrong ^{[2
]}

机构：

[1] Zhejiang Univ, Coll Chem & Biol Engn, Zhejiang Prov Key Lab Adv Chem Engn Manufacture T, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Coll Chem & Biol Engn, State Key Lab Chem Engn, Hangzhou 310027, Peoples R China

来源：

POWDER TECHNOLOGY | 2020年 / 375卷

基金：

中国国家自然科学基金;

关键词：

Downcomer; Orifice; Particle flow; Multistage fluidized bed; CONTINUOUS CO2 CAPTURE; ADSORPTION; STANDPIPE; RANGE;

D O I：

10.1016/j.powtec.2020.07.075

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This work investigated the particle flow behaviors in the orifice downcomer of the multistage fluidized bed based on a simplified experimental device, in which the flow behavior can be observed conveniently and directly. Three flow patterns were observed, which were the stable moving bed, the bubbling moving bed, and the slugging bed. Furthermore, significant differences were found in the pressure pulsation signals of different flow patterns, thus a flow pattern identification method using pressure pulsation spectrum was proposed and the corresponding flow pattern maps were established for the orifice downcomer with different diameters. Finally, the difference between the stable moving bed and the bubbling moving bed was further studied. Results showed that the solid flow rate in the sable moving bed state was related to the superficial gas velocity in the downcomer, while it was only related to the cavity appearing near the orifice in the bubbling moving bed state. (C) 2020 Elsevier B.V. All rights reserved.

引用

页码：292 / 301

页数：10

共 16 条

[1] DESIGN OF DOWNCOMERS JOINING GAS-FLUIDIZED BEDS IN MULTISTAGE SYSTEMS [J].