Dynamic characteristics of the large particles inside the fluidized bed with an inclined air distribution plate

2020 ◽  
Vol 367 ◽  
pp. 632-642 ◽  
Author(s):  
Liang Yan ◽  
Hanzhou Liu ◽  
Feng Li ◽  
Juanfang Liu
Keyword(s):  
Fluidized Bed ◽  
Dynamic Characteristics ◽  
Air Distribution ◽  
Large Particles ◽  
Distribution Plate

scholarly journals Commissioning Analysis and Improvement measures for Biomass Circulating Fluidized Bed Gasifier

2021 ◽  
Vol 329 ◽  
pp. 01040
Author(s):  
Shan Gu ◽  
Maosheng Liu ◽  
Chunxiao He ◽  
Jicheng Yang
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Feeding Tube ◽  
Air Distribution ◽  
Cyclone Separator ◽  
Large Fluctuation ◽  
Improvement Measures ◽  
Fluidized Bed Gasifier ◽  
Distribution Plate ◽  
Operation Characteristics

This paper presents the debugging test of biomass circulating fluidized bed gasifier in a rice mill factory of Jiangsu Province. The main debugging process of the gasifier system is reported. The typical problems of the gasifier system during the debugging period are analyzed, including the blockage of the primary cyclone separator, blockage of loop seal, bed inventory leakage of blast cap on air distribution plate, feeding tube coking, and large fluctuation of bed pressure. Reasonable improvement countermeasures and implementation plan is provided. The operation characteristics of the gasifier are preliminaries mastered through debugging, which provides reference for the operation and adjustment of the biomass circulating fluidized bed gasifier. These results provide certain guiding significance for the scale application of biomass circulating fluidized bed gasifier.

Bubble eruption diameter in a fluidized bed of large particles at elevated temperatures

1981 ◽  
Vol 36 (7) ◽  
pp. 1259-1260 ◽  
Author(s):  
Norkun Sitthiphong ◽  
Alan H. George ◽  
Dwight Bushnell
Keyword(s):  
Fluidized Bed ◽  
Elevated Temperatures ◽  
Large Particles

The Pressure Drop at Critical Fluidization of Large Particles in Vibrated Fluidization Bed

2012 ◽  
Vol 550-553 ◽  
pp. 2763-2766
Author(s):  
Xue Jun Zhu ◽  
Jun Deng
Keyword(s):  
Pressure Drop ◽  
Fluidized Bed ◽  
Large Particle ◽  
Particle Diameter ◽  
Future Design ◽  
Vibration Strength ◽  
Bed Height ◽  
Large Particles ◽  
Vibrated Fluidized Bed ◽  
Critical Fluidization

The pressure drop at critical fluidization for two-dimensional vibrated fluidized bed(240 mm×80 mm) was studied, with large particle glass beads of average diameters dp of 1.8mm, 2.5mm and 3.2mm.The effect of the vibration strength, the static bed height and the particle diameter on the pressure drop was analyzed. The results of the study show that the pressure drop decreases with the increase of the vibration strength. It plays an even more prominent part with decreases of the static bed height and the particle diameter. The empirical correlation equations to predict the pressure drop was established, and the results of the prediction was compared with the experimental data, the error is in range of ±10%. The results can provide references for future design and research on the vibrated fluidized bed.

The dynamics of large particles in a four-compartment interconnected fluidized bed

1999 ◽  
Vol 101 (3) ◽  
pp. 229-239 ◽  
Author(s):  
F.F. Snieders ◽  
A.C. Hoffmann ◽  
D. Cheesman ◽  
J.G. Yates ◽  
M. Stein ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Large Particles

Dynamic characteristics of binary mixtures in a two-jet fluidized bed

2011 ◽  
Vol 66 (8) ◽  
pp. 1702-1714 ◽  
Author(s):  
Pei Pei ◽  
Kai Zhang ◽  
Bangting Yu ◽  
Jing Gao ◽  
Guiying Wu ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Binary Mixtures ◽  
Dynamic Characteristics

Fusibility Characteristics of Slag from Fluidized-Bed Gasification of Jincheng Anthracite

2013 ◽  
Vol 805-806 ◽  
pp. 1317-1320
Author(s):  
Feng Hai Li ◽  
Zhen Zhu Li ◽  
Ming Jie Ma ◽  
Jie Jie Huang ◽  
Yi Tian Fang
Keyword(s):  
Fluidized Bed ◽  
Slag Formation ◽  
X Ray Diffraction ◽  
Fusion Temperature ◽  
X Ray ◽  
Base Content ◽  
Ash Fusion Temperature ◽  
Total Base ◽  
Mineral Compositions ◽  
Distribution Plate

To investigate fusibility characteristics of slag from Jincheng Anthracite (JC) pressurized ash agglomerate fluidized bed (AFB) gasification of Jincheng Anthracite (JC), the slag samples were examined by an ash fusion temperature (AFT) analyzer, scanning electron microscope (SEM), and X-ray diffraction (XRD). The results show that the AFTs of three kinds of slag are lower than that of JC greatly, and the AFTs of three kinds of slag decrease from the slag formed that on the central tube (SC) to distribution plate (SD) to inner face (SI), as a result of the increase of total base content and the differences in their mineral compositions accordingly. Not all slag during AFB gasification are composed of molten mineral matters. This can be explained that the phenomena that the slag formation during fluidized-bed gasification when the operating temperature is below the AFTs of coal.

scholarly journals Investigation of flow dynamic characteristics of inverse fluidized bed biofilm reactor for degrading pharmaceutical based biomedical wastewater

2020 ◽  
Author(s):  
Sabarunisha Begum S ◽  
Mohamed Yacin Sikkandar ◽  
Prakash NB ◽  
Mohsen Bakouri ◽  
Ahmed Bakhit Alanazi ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Dynamic Characteristics ◽  
Biofilm Reactor ◽  
Flow Dynamic ◽  
Inverse Fluidized Bed
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