Turbulent mass transfer model for simulating protein desorption in liquid–solid circulating fluidized bed risers--颗粒学报PARTICUOLOGY

Ren, P., Zhang, Y., Li, W., & Yu, K. (2021). Turbulent mass transfer model for simulating protein desorption in liquid–solid circulating fluidized bed risers. Particuology, 57, 167-175. https://doi.org/10.1016/j.partic.2020.12.007

Turbulent mass transfer model for simulating protein desorption in liquid–solid circulating fluidized bed risers

Panfeng Ren ^a, Yawen Zhang ^a, Wenbin Li^a *, Kuotsung Yu ^b

a Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
b State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

10.1016/j.partic.2020.12.007

Volume 57, August 2021, Pages 167-175

Received 7 July 2020, Revised 3 December 2020, Accepted 7 December 2020, Available online 20 January 2021, Version of Record 26 February 2021.

E-mail: richard@tju.edu.cn

Highlights

• Protein desorption in a liquid–solid circulating fluidized bed riser is simulated.

• Protein distribution is obtained without the empirical turbulent mass diffusivity.

• Simulated results agree well with published experimental data.

• The turbulent Schmidt number is found not to be constant in the LSCFB riser.

Abstract

An integrated model, namely the two-equation turbulent model, is introduced to simulate mass transfer in a liquid–solid circulating fluidized bed (LSCFB) riser. Protein desorption is simulated and the proposed model is validated. The protein concentration profiles simulated with this model agree well with published experimental results. This model enables direct determination of turbulent mass diffusivity, removing the need to empirically guess a constant turbulent Schmidt number for simulating mass transfer in a turbulent flow. This model is useful when the turbulent mass diffusivity is not available for simulating mass transfer in an LSCFB riser.

Graphical abstract

Keywords

Liquid–solid circulating fluidized bed; Simulation; Turbulent mass diffusivity; Ion exchange; Protein recovery

文章导读