skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effects of heat exchanger tubes on hydrodynamics and CO 2 capture of a sorbent-based fluidized bed reactor

Abstract

In virtual design and scale up of pilot-scale carbon capture systems, the coupled reactive multiphase flow problem must be solved to predict the adsorber’s performance and capture efficiency under various operation conditions. This paper focuses on the detailed computational fluid dynamics (CFD) modeling of a pilot-scale fluidized bed adsorber equipped with vertical cooling tubes. Multiphase Flow with Interphase eXchanges (MFiX), an open-source multiphase flow CFD solver, is used for the simulations with custom code to simulate the chemical reactions and filtered models to capture the effect of the unresolved details in the coarser mesh for simulations with reasonable simulations and manageable computational effort. Previously developed two filtered models for horizontal cylinder drag, heat transfer, and reaction kinetics have been modified to derive the 2D filtered models representing vertical cylinders in the coarse-grid CFD simulations. The effects of the heat exchanger configurations (i.e., horizontal or vertical) on the adsorber’s hydrodynamics and CO2 capture performance are then examined. The simulation result subsequently is compared and contrasted with another predicted by a one-dimensional three-region process model.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1416683
Report Number(s):
PNNL-SA-124598
Journal ID: ISSN 0032-5910; AA9010100
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Powder Technology; Journal Volume: 322; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
Computational fluid dynamics; bubbling bed; carbon capture; model validation; multiphase reactive flow; filtered models

Citation Formats

Lai, Canhai, Xu, Zhijie, Li, Tingwen, Lee, Andrew, Dietiker, Jean-François, Lane, William, and Sun, Xin. Effects of heat exchanger tubes on hydrodynamics and CO 2 capture of a sorbent-based fluidized bed reactor. United States: N. p., 2017. Web. doi:10.1016/j.powtec.2017.07.062.
Lai, Canhai, Xu, Zhijie, Li, Tingwen, Lee, Andrew, Dietiker, Jean-François, Lane, William, & Sun, Xin. Effects of heat exchanger tubes on hydrodynamics and CO 2 capture of a sorbent-based fluidized bed reactor. United States. doi:10.1016/j.powtec.2017.07.062.
Lai, Canhai, Xu, Zhijie, Li, Tingwen, Lee, Andrew, Dietiker, Jean-François, Lane, William, and Sun, Xin. Fri . "Effects of heat exchanger tubes on hydrodynamics and CO 2 capture of a sorbent-based fluidized bed reactor". United States. doi:10.1016/j.powtec.2017.07.062.
@article{osti_1416683,
title = {Effects of heat exchanger tubes on hydrodynamics and CO 2 capture of a sorbent-based fluidized bed reactor},
author = {Lai, Canhai and Xu, Zhijie and Li, Tingwen and Lee, Andrew and Dietiker, Jean-François and Lane, William and Sun, Xin},
abstractNote = {In virtual design and scale up of pilot-scale carbon capture systems, the coupled reactive multiphase flow problem must be solved to predict the adsorber’s performance and capture efficiency under various operation conditions. This paper focuses on the detailed computational fluid dynamics (CFD) modeling of a pilot-scale fluidized bed adsorber equipped with vertical cooling tubes. Multiphase Flow with Interphase eXchanges (MFiX), an open-source multiphase flow CFD solver, is used for the simulations with custom code to simulate the chemical reactions and filtered models to capture the effect of the unresolved details in the coarser mesh for simulations with reasonable simulations and manageable computational effort. Previously developed two filtered models for horizontal cylinder drag, heat transfer, and reaction kinetics have been modified to derive the 2D filtered models representing vertical cylinders in the coarse-grid CFD simulations. The effects of the heat exchanger configurations (i.e., horizontal or vertical) on the adsorber’s hydrodynamics and CO2 capture performance are then examined. The simulation result subsequently is compared and contrasted with another predicted by a one-dimensional three-region process model.},
doi = {10.1016/j.powtec.2017.07.062},
journal = {Powder Technology},
number = C,
volume = 322,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 2017},
month = {Fri Dec 01 00:00:00 EST 2017}
}