Oxygen Transport Membranes: A Material Science and Process Engineering Approach

Wei Chen

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

65 Downloads (Pure)

Abstract

This thesis describes several fundamental aspects on the membrane-integrated oxy-fuel combustion process and can be divided in two parts: 1) The development and characterization of membrane materials; 2) The design, simulation and evaluation of a coal-fired power plant, coupled with a membrane module. A simple and easy method to measure the oxygen nonstoichiometry of a perovskite material is described in chapter 2. A Computing Fluid Dynamic (CFD) model is developed in chapter 3 to describe the oxygen gradient in a commonly used oxygen permeation set-up, as used to determine the oxygen ionic conductivity of a membrane. Chapter 4 provides the development of a CO2-stable membrane (Ta doped SrCo0.8Fe0.2O3-δ (SCF)) as can be used for the membrane-integrated oxy-fuel combustion process. In chapter 5 it is found that the CO2 tolerance of the SCF membrane is affected by the ambient oxygen partial pressure: mixing 5% oxygen to CO2 can prevent the membrane from degradation. In chapter 6 of this thesis a membrane-integrated oxy-fuel combustion process is designed, and this process is simulated in Unisim for evaluation. In this final chapter, some general conclusions are drawn from the previous chapters, and some recommendations are given for future work.
Original languageEnglish
Awarding Institution
  • University of Twente
Supervisors/Advisors
  • Nijmeijer, A., Supervisor
  • Winnubst, A.J.A., Supervisor
Award date16 May 2014
Place of PublicationEnschede
Publisher
Print ISBNs978-90-365-3660-8
DOIs
Publication statusPublished - 16 May 2014

Fingerprint

Process engineering
Materials science
Oxygen
Membranes
Coal
Ionic conductivity
Fluid dynamics
Permeation
Partial pressure
Dynamic models
Power plants
Degradation

Keywords

  • METIS-303547
  • IR-90658

Cite this

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title = "Oxygen Transport Membranes: A Material Science and Process Engineering Approach",
abstract = "This thesis describes several fundamental aspects on the membrane-integrated oxy-fuel combustion process and can be divided in two parts: 1) The development and characterization of membrane materials; 2) The design, simulation and evaluation of a coal-fired power plant, coupled with a membrane module. A simple and easy method to measure the oxygen nonstoichiometry of a perovskite material is described in chapter 2. A Computing Fluid Dynamic (CFD) model is developed in chapter 3 to describe the oxygen gradient in a commonly used oxygen permeation set-up, as used to determine the oxygen ionic conductivity of a membrane. Chapter 4 provides the development of a CO2-stable membrane (Ta doped SrCo0.8Fe0.2O3-δ (SCF)) as can be used for the membrane-integrated oxy-fuel combustion process. In chapter 5 it is found that the CO2 tolerance of the SCF membrane is affected by the ambient oxygen partial pressure: mixing 5{\%} oxygen to CO2 can prevent the membrane from degradation. In chapter 6 of this thesis a membrane-integrated oxy-fuel combustion process is designed, and this process is simulated in Unisim for evaluation. In this final chapter, some general conclusions are drawn from the previous chapters, and some recommendations are given for future work.",
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Oxygen Transport Membranes : A Material Science and Process Engineering Approach. / Chen, Wei.

Enschede : GildePrint, 2014. 147 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

TY - THES

T1 - Oxygen Transport Membranes

T2 - A Material Science and Process Engineering Approach

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AB - This thesis describes several fundamental aspects on the membrane-integrated oxy-fuel combustion process and can be divided in two parts: 1) The development and characterization of membrane materials; 2) The design, simulation and evaluation of a coal-fired power plant, coupled with a membrane module. A simple and easy method to measure the oxygen nonstoichiometry of a perovskite material is described in chapter 2. A Computing Fluid Dynamic (CFD) model is developed in chapter 3 to describe the oxygen gradient in a commonly used oxygen permeation set-up, as used to determine the oxygen ionic conductivity of a membrane. Chapter 4 provides the development of a CO2-stable membrane (Ta doped SrCo0.8Fe0.2O3-δ (SCF)) as can be used for the membrane-integrated oxy-fuel combustion process. In chapter 5 it is found that the CO2 tolerance of the SCF membrane is affected by the ambient oxygen partial pressure: mixing 5% oxygen to CO2 can prevent the membrane from degradation. In chapter 6 of this thesis a membrane-integrated oxy-fuel combustion process is designed, and this process is simulated in Unisim for evaluation. In this final chapter, some general conclusions are drawn from the previous chapters, and some recommendations are given for future work.

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