Imperial College London

ProfessorGeoffreyMaitland

Faculty of EngineeringDepartment of Chemical Engineering

Professor of Energy Engineering
 
 
 
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Contact

 

+44 (0)20 7594 1830g.maitland Website

 
 
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Assistant

 

Mrs Sarah Payne +44 (0)20 7594 5567

 
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Location

 

401ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yao:2017:10.1021/acs.energyfuels.7b01384,
author = {Yao, JG and fennell, PS and Maitland, GC and zhang, Z and sceats, M},
doi = {10.1021/acs.energyfuels.7b01384},
journal = {Energy and Fuels},
pages = {11181--11193},
title = {Two-Phase Fluidized Bed Model for Pressurized Carbonation Kinetics of Calcium Oxide},
url = {http://dx.doi.org/10.1021/acs.energyfuels.7b01384},
volume = {31},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - A two-phase reactor model has been developed using a system of ordinary differential equations in MATLAB to model the carbonation reaction and therefore determine the kinetics of calcium oxide in a pressurised fluidised bed reactor as part of the calcium looping cycle. The model assumes that the particulate and bubble phases are modelled as a CSTR and a PFR respectively. The random pore model developed by Bhatia and Perlmutter1 is incorporated into the system of equations to predict the rate of carbonation for pressures up to 5 bara total, and CO2 partial pressures up to 150 kPa. The surface rate constant and product layer diffusivity in the random pore model expression were obtained by fitting the model to experimental data for a range of pressures, CO2 concentrations and temperatures by minimization of the resid-ual sum of squares. The surface rate constants were found to be between 3.05 and 12.9 x 10-10 m4 mol-1 s-1 for a temper-ature range of 550 to 750 °C. The product layer diffusivities were found to be between 0.06 and 23.6 x 10-13 m2 s-1 for the same temperature range. The surface rate constant and product layer diffusivity activation energy were calculated using the Arrhenius e
AU - Yao,JG
AU - fennell,PS
AU - Maitland,GC
AU - zhang,Z
AU - sceats,M
DO - 10.1021/acs.energyfuels.7b01384
EP - 11193
PY - 2017///
SN - 0887-0624
SP - 11181
TI - Two-Phase Fluidized Bed Model for Pressurized Carbonation Kinetics of Calcium Oxide
T2 - Energy and Fuels
UR - http://dx.doi.org/10.1021/acs.energyfuels.7b01384
UR - http://hdl.handle.net/10044/1/51047
VL - 31
ER -