DDPM simulation of the erosion of immersed tubes in a pulsating fluidized bed

被引：3

作者：

Xu, Liuyun ^{[1
,2
]}

Wu, Feng ^{[1
]}

Wang, Junwu ^{[3
]}

机构：

[1] Northwest Univ, Sch Chem Engn, Xian 710069, Peoples R China

[2] Yanan Univ, Sch Chem & Chem Engn, Yanan 716000, Peoples R China

[3] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2023年 / 269卷

基金：

中国国家自然科学基金;

关键词：

Pulsating flow; Immersed tube erosion; Pressure drop stability; Power spectral density (PSD); SOLID PARTICLE IMPACT; HEAT-TRANSFER; PULSED FLOW; PRESSURE FLUCTUATION; PRACTICAL ESTIMATION; 2-FLUID MODEL; AIR-FLOW; GAS; BEHAVIOR; DAMAGE;

D O I：

10.1016/j.ces.2023.118475

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, the effects of the type of pulsating inlet waveform, pulsation frequency, and pulsation amplitude on the stability of fluidized beds and the erosion of immersed tubes were investigated by numerical simulation. Compared with rectangular and triangular inlet flows, sinusoidal flow induced the lowest immersed-tube erosion rate and pressure-drop fluctuation in the fluidized bed. Furthermore, under sinusoidal flow with a pulsation frequency of 1 Hz and pulsation amplitude of 0.25um, the immersed-tube erosion rate was lower by 1.8 %, standard deviation of pressure drop by 14.16 %, and energy generated from bubble rupture by 47.83 % than those under uniform flow. A dimen-sionless parameter vp that can represent immersed-tube erosion during pulsating flow was proposed, which reflects the effect of particle flow characteristics, particle fluidization degree, and pulsation fre-quency on immersed-tube erosion.CO 2023 Elsevier Ltd. All rights reserved.

引用

页数：13

共 50 条

[21] HEAT-TRANSFER TO HORIZONTAL TUBES IMMERSED IN A FLUIDIZED-BED COMBUSTOR
GREWAL, NS
MENART, J
HAJICEK, DR
ZOBECK, BJ
[J]. POWDER TECHNOLOGY, 1987, 52 (02) : 149 - 159
[22] Numerical study of solids behavior in fluidized bed with multi-immersed tubes
Key Laboratory for Biomass Gasification Technology of Shandong Province, Energy Research Institute of Shandong Academy of Sciences, Jinan 250014, Shandong, China
不详
[J]. Huagong Xuebao, 2013, 8 (2788-2793):
[23] Numerical modeling and uncertainty quantification of a bubbling fluidized bed with immersed horizontal tubes
Lane, William A.
Storlie, Curtis B.
Montgomery, Christopher J.
Ryan, Emily M.
[J]. POWDER TECHNOLOGY, 2014, 253 : 733 - 743
[24] Erosion behaviors of membrane tubes in a fluidized bed reactor with hydrogen separation
Yang, Xuesong
Wang, Shuai
Liu, Siyu
He, Yurong
[J]. POWDER TECHNOLOGY, 2021, 381 : 17 - 24
[25] Heat transfer characteristics of horizontal immersed tubes in hot pressurized fluidized bed with ilmenite as bed materials
Bao, Xu
Huang, Yu
Huang, Zhijun
Duan, Yuanqiang
Duan, Lunbo
[J]. Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology), 2022, 53 (12): : 4648 - 4656
[26] Drying Model of Paste Materials in Fluidized Bed with Inert Particles and Immersed Heating Tubes
Yao, Bi-Qiang
Zhu, Xue-Jun
[J]. CHINESE CERAMICS COMMUNICATIONS II, 2012, 412 : 463 - 468
[27] Bubbling behavior of cohesive particles in a two-dimensional fluidized bed with immersed tubes
Ma, Jiliang
Liu, Daoyin
Chen, Xiaoping
[J]. PARTICUOLOGY, 2017, 31 : 152 - 160
[28] PRESSURE-FLUCTUATIONS IN FLUIDIZED-BED COAL COMBUSTORS - EFFECT OF IMMERSED TUBES
BOBOVNICKY, A
[J]. STROJARSTVO, 1991, 33 (04): : 203 - 208
[29] A system for measuring bubble voidage and frequency around tubes immersed in a fluidized bed of particles
Whitty, Kevin J.
Siddoway, Michael
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2010, 81 (07):
[30] A system for measuring bubble voidage and frequency around tubes immersed in a fluidized bed of particles
Department of Chemical Engineering, University of Utah, Salt Lake City, UT 84112, United States
[J]. Rev. Sci. Instrum., 7

← 1 2 3 4 5 →