Advanced

Computational Analysis and Modeling Techniques for Monolithic Membrane Reactors Related to CO2 Free Power Processes

Selimovic, Faruk LU (2007)
Abstract
Funded by European Community and Swiss government research project AZEP (Advanced

Zero Emission Power Plant), the project was carried out at the Department of

Energy Sciences at Lund Faculty of Engineering (LTH). The project addressed the development

of a specific, zero emissions, gas turbine-based, power generation process to reduce

local and global emissions in a cost-effective way. In this project a unique monolith heat

and mass exchanger reactor with an oxygen permeable membrane was proposed by the

Norsk Hydro Oil and Energy Research Center in Norway. The aim of this thesis is to

describe a complete design of a monolithic reactor where both heat and oxygen... (More)
Funded by European Community and Swiss government research project AZEP (Advanced

Zero Emission Power Plant), the project was carried out at the Department of

Energy Sciences at Lund Faculty of Engineering (LTH). The project addressed the development

of a specific, zero emissions, gas turbine-based, power generation process to reduce

local and global emissions in a cost-effective way. In this project a unique monolith heat

and mass exchanger reactor with an oxygen permeable membrane was proposed by the

Norsk Hydro Oil and Energy Research Center in Norway. The aim of this thesis is to

describe a complete design of a monolithic reactor where both heat and oxygen transport

takes place. This led to the development of a mathematical model of an oxygen membrane

reactor which fulfils the boundary conditions set by the AZEP process. Further, an investigation

of the total pressure drop and pressure distribution of the manifolding system

using the Computational Fluid Dynamics (CFD) tool FLUENT was carried out. A further

goal was also to perform dynamic analysis of the AZEP reactor. In order to perform

such analysis, calculation tools were needed to describe the performance of CO2 capture.

The object-oriented programming languages Modelica and Dymola were used to describe

dynamic behavior of the oxygen transfer reactor.

Sensitivity studies performed with the membrane model showed that a high inlet

sweep temperature would raise the magnitude of the oxygen permeation flux through the

MCMmembrane. At the same time high inlet air temperatures would be necessary to keep

the driving potential through the length of the membrane at a higher level which would

be important for achieving the targeted industrial values of oxygen fluxes. The dynamic

simulations showed that disturbances on sweep flow had larger impact on the membranes

performance than disturbances introduced on the air side of the reactor. By introduction

of a new solution of flow manifolds (linear channel arrangement) a less complex header

system than the one in the AZEP solution was achieved.

Since the implementation of detailed membrane model in heat and mass balance calculations

for system studies would result in excessive calculation time, results from this

study were utilized for the generation of correlations describing the oxygen transfer as a

function of operating parameters such as temperature and partial pressure. This modeling

approach was expected to improve the accuracy of the system studies. (Less)
Please use this url to cite or link to this publication:
author
supervisor
opponent
  • Professor Yan, Jinyue, Energiprocesser, KTH, 10044 Stockholm
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Oxygen Transfer Membrane (OTM), High Temperature Heat Exchanger (HTHEX), Monolithic Heat Exchanger, Advanced Zero Emission Power Plant (AZEP), Mixed Ionic-Electronic Conducting Membranes (MIEC), Computational Fluid Dynamics (CFD)
publisher
Heat Transfer
defense location
Room M:B, M-building, Ole Römers väg 1, Lund University Faculty of Engineering
defense date
2007-12-12 13:00
ISBN
978-91-628-7345-5
project
Advanced Zero Emission Power Plant (AZEP)
language
English
LU publication?
yes
id
e04df0ea-9843-4b99-8f78-947c78676b30 (old id 602413)
date added to LUP
2007-11-20 08:44:44
date last changed
2016-09-19 08:45:12
@misc{e04df0ea-9843-4b99-8f78-947c78676b30,
  abstract     = {Funded by European Community and Swiss government research project AZEP (Advanced<br/><br>
Zero Emission Power Plant), the project was carried out at the Department of<br/><br>
Energy Sciences at Lund Faculty of Engineering (LTH). The project addressed the development<br/><br>
of a specific, zero emissions, gas turbine-based, power generation process to reduce<br/><br>
local and global emissions in a cost-effective way. In this project a unique monolith heat<br/><br>
and mass exchanger reactor with an oxygen permeable membrane was proposed by the<br/><br>
Norsk Hydro Oil and Energy Research Center in Norway. The aim of this thesis is to<br/><br>
describe a complete design of a monolithic reactor where both heat and oxygen transport<br/><br>
takes place. This led to the development of a mathematical model of an oxygen membrane<br/><br>
reactor which fulfils the boundary conditions set by the AZEP process. Further, an investigation<br/><br>
of the total pressure drop and pressure distribution of the manifolding system<br/><br>
using the Computational Fluid Dynamics (CFD) tool FLUENT was carried out. A further<br/><br>
goal was also to perform dynamic analysis of the AZEP reactor. In order to perform<br/><br>
such analysis, calculation tools were needed to describe the performance of CO2 capture.<br/><br>
The object-oriented programming languages Modelica and Dymola were used to describe<br/><br>
dynamic behavior of the oxygen transfer reactor.<br/><br>
Sensitivity studies performed with the membrane model showed that a high inlet<br/><br>
sweep temperature would raise the magnitude of the oxygen permeation flux through the<br/><br>
MCMmembrane. At the same time high inlet air temperatures would be necessary to keep<br/><br>
the driving potential through the length of the membrane at a higher level which would<br/><br>
be important for achieving the targeted industrial values of oxygen fluxes. The dynamic<br/><br>
simulations showed that disturbances on sweep flow had larger impact on the membranes<br/><br>
performance than disturbances introduced on the air side of the reactor. By introduction<br/><br>
of a new solution of flow manifolds (linear channel arrangement) a less complex header<br/><br>
system than the one in the AZEP solution was achieved.<br/><br>
Since the implementation of detailed membrane model in heat and mass balance calculations<br/><br>
for system studies would result in excessive calculation time, results from this<br/><br>
study were utilized for the generation of correlations describing the oxygen transfer as a<br/><br>
function of operating parameters such as temperature and partial pressure. This modeling<br/><br>
approach was expected to improve the accuracy of the system studies.},
  author       = {Selimovic, Faruk},
  isbn         = {978-91-628-7345-5},
  keyword      = {Oxygen Transfer Membrane (OTM),High Temperature Heat Exchanger (HTHEX),Monolithic Heat Exchanger,Advanced Zero Emission Power Plant (AZEP),Mixed Ionic-Electronic Conducting Membranes (MIEC),Computational Fluid Dynamics (CFD)},
  language     = {eng},
  publisher    = {ARRAY(0xae7a970)},
  title        = {Computational Analysis and Modeling Techniques for Monolithic Membrane Reactors Related to CO2 Free Power Processes},
  year         = {2007},
}