Experimental and theoretical investigation of mass transfer in a circulating fluidized bed

Hou, Baolin; Tang, Hailong; Zhang, Haiying; Shao, Guoqiang; Li, Hongzhong; Zhu, Qingshan

doi:10.1016/j.ces.2013.06.050

Cited by 19 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The simulated results of the ozone decomposition process showed a better agreement with experimental data. The MSMT model was further validated for the catalytic oxidation of carbon monoxide in a circulating fluidized bed [24]. The results also demonstrated that the clusters played an important role in the gas-solid mass transfer.…”

Section: Introductionmentioning

confidence: 95%

Multi-scale simulation of chemical looping combustion in dual circulating fluidized bed

et al. 2015

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 95%

Multi-scale simulation of chemical looping combustion in dual circulating fluidized bed

et al. 2015

View full text Add to dashboard Cite

“…The aggregation and fragmentation frequencies of clusters strengthen the gas–solid interactions and increase the interphase slip velocity; at the same time, the mutual shielding effect between particles was weakened to enhance the mass-transfer process. Hou et al , investigated the effect of particle agglomeration behavior on mass transfer within a gas–solid fluidized bed proposing the multiscale mass-transfer (MSMT) model. The study chose cluster diameter instead of particle diameter and also discussed the effect of cluster size and behavior on mass transfer in fast fluidized beds.…”

Section: Introductionmentioning

confidence: 99%

Multiscale Model of Gas–Liquid Interface Mass Transfer in Gas–Liquid–Solid Fluidized Beds

Lan,

Ma,

Areej

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The gas−liquid−solid fluidized bed (GLSFB) is one of the most important multiphase chemical and biochemical reactors in the process industry. Quantifying scientifically the process of gas/liquid mass transfer is the key routine to design and optimize such a reactor. However, until now, most of the masstransfer calculations in a fluidized bed are done by using empirical correlations, which have limited applications. This work develops a multiscale gas/liquid mass-transfer model for the first time together with consideration of the bimodal bubble size distribution in the GLSFB based on the principle of energy minimum multiscale. This new model is able to predict the gas−liquid mass-transfer parameters and the influence of the double-peak bubble size distribution on mass transfer and to reveal the mechanism of multiscale regulation and control of the gas/liquid mass-transfer process in GLSFB. The results of model calculations agree with literature data, the modeling predictions show that the small bubbles have greater impact on gas−liquid interfacial area; and the area can be adjusted by changing the microscale of small bubbles; the large bubbles have greater impact on mass-transfer coefficient, and the coefficient can be regulated by the mesoscale of large bubbles; when changing the superficial gas and liquid velocities, small bubbles have greater influence on volume mass-transfer coefficient and can be regulated by the microscale of small bubbles, and when changing the superficial particle velocity, large bubbles have greater influence and can be regulated by the mesoscale of large bubbles.

show abstract

“…Other than that, the heterogeneous or catalytic reactions over bed materials are of significance concerning their possible role in reducing (char/ash) [25][26][27] or increasing (lime) [14,28,29] NOx emission. In addition, for an accurate description of the heterogeneous reaction rate, the transport phenomena in both gas-solid two-phase flow and pore system of particles must be considered [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Prediction and minimization of NOx emission in a circulating fluidized bed combustor: A comprehensive mathematical model for CFB combustion

Engblom

Yang

et al. 2022

Fuel

View full text Add to dashboard Cite

Experimental and theoretical investigation of mass transfer in a circulating fluidized bed

Cited by 19 publications

References 16 publications

Multi-scale simulation of chemical looping combustion in dual circulating fluidized bed

Multi-scale simulation of chemical looping combustion in dual circulating fluidized bed

Multiscale Model of Gas–Liquid Interface Mass Transfer in Gas–Liquid–Solid Fluidized Beds

Prediction and minimization of NOx emission in a circulating fluidized bed combustor: A comprehensive mathematical model for CFB combustion

Contact Info

Product

Resources

About