Flow behaviors in the downer of a large-scale triple-bed combined circulating fluidized bed system with high solids mass fluxes

2011 ◽  
Vol 66 (18) ◽  
pp. 4212-4220 ◽  
Author(s):  
Guoqing Guan ◽  
Chihiro Fushimi ◽  
Masanori Ishizuka ◽  
Yu Nakamura ◽  
Atsushi Tsutsumi ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Large Scale ◽  
Circulating Fluidized Bed ◽  
High Solids ◽  
Mass Fluxes

Experimental Study of Solids Motion in an 18 m Gas–Solids Circulating Fluidized Bed with High Solids Flux

2019 ◽  
Vol 58 (51) ◽  
pp. 23468-23480 ◽  
Author(s):  
Xin Su ◽  
Chengxiu Wang ◽  
Huajian Pei ◽  
Jingya Li ◽  
Xingying Lan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
High Solids

CFD modeling of gas–solids flow in a large scale circulating fluidized bed furnace

2015 ◽  
Vol 274 ◽  
pp. 239-249 ◽  
Author(s):  
Srujal Shah ◽  
Kari Myöhänen ◽  
Sirpa Kallio ◽  
Jouni Ritvanen ◽  
Timo Hyppänen
Keyword(s):  
Fluidized Bed ◽  
Large Scale ◽  
Circulating Fluidized Bed ◽  
Cfd Modeling

Status and Prospect of Large-Scale Circulating Fluidized Bed Boiler

2012 ◽  
Vol 516-517 ◽  
pp. 444-447
Author(s):  
Da Fu Ma ◽  
Xiao Hong Hao
Keyword(s):  
Fluidized Bed ◽  
Co2 Capture ◽  
Power Plants ◽  
Large Scale ◽  
Circulating Fluidized Bed ◽  
Present Situation ◽  
Supercritical Pressure ◽  
High Density ◽  
Cfb Boiler ◽  
Fluidized Bed Gasifier

The paper is focused on the present situation and the development of large-scale circulating fluidized bed (CFB) boilers. Several developed technology of CFB such as supercritical and ultra supercritical pressure CFB boilers for power plants, oxy-fuel CFB boiler for CO2 capture and high-density circulating fluidized bed gasifier for advanced IGCC/IGFC are introduced in this paper.

The near wall dense ring in a large-scale down-flow circulating fluidized bed

2003 ◽  
Vol 92 (1-3) ◽  
pp. 161-167 ◽  
Author(s):  
Minghui Zhang ◽  
Zhen Qian ◽  
Hao Yu ◽  
Fei Wei
Keyword(s):  
Fluidized Bed ◽  
Large Scale ◽  
Circulating Fluidized Bed ◽  
Dense Ring ◽  
Scale Down ◽  
Near Wall

Investigation on Complex Pressure Fluctuations in a Gas-Solids Circulating Fluidized Bed Rieser

2012 ◽  
Vol 538-541 ◽  
pp. 610-615
Author(s):  
Jun Xu ◽  
Xing Xing Chen ◽  
Gui Lei Wang ◽  
Yao Dong Wei
Keyword(s):  
Fluidized Bed ◽  
Pressure Fluctuation ◽  
Circulating Fluidized Bed ◽  
Pressure Fluctuations ◽  
Low Frequency ◽  
Axial Direction ◽  
High Amplitude ◽  
Solid Mass ◽  
Two Phase ◽  
Mass Fluxes

The experiment is carried out in a 13-meter-high circulating fluidized bed(CFB) to investigate gas-solid two-phase flow by pressure sensor. The axial pressure and pressure fluctuation are measured in different solid mass fluxes. With the solid mass flux increasing, pressure gradually increases, and pressure gradually decreases along the riser upwards. The characteristic of pressure fluctuation in the riser is analyzed, which indicates that pressure fluctuation in the riser originates from the inlet. The intensity of the pressure fluctuation decreases along the riser upwards. This pressure fluctuation is composed of two types: one is of low frequency and high amplitude, which is resulted from unstable feeding to the riser and keeps coherent along the axial direction. And the other is of high frequency and low amplitude, which is the result of a variety of factors, such as cluster movement, gas-solid interaction and gas velocity fluctuation.

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