Mike_Stewart_-_Thesis_-_Oxy-fuel_Sulfation_-_Apr_2011

Mike_Stewart_-_Thesis_-_Oxy-fuel_Sulfation_-_Apr_2011 -...

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SULFATION PHENOMENA UNDER OXY-FUEL CIRCULATING FLUIDIZED BED CONDITIONS By MICHAEL C. STEWART B.A.Sc. Chemical Engineering, University of Ottawa, Canada, 2009. A THESIS SUBMITTED IN PARTIAL FUFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER’S OF APPLIED SCIENCE IN CHEMICAL ENGINEERING From THE FACTULY OF GRADUATE AND POSTDOCTORAL STUDIES DEPARTMENT OF CHEMICAL AND BIOLOGICAL ENGINEERING We accept this thesis as confirming to the required standard ______________________________ ______________________________ ______________________________ ______________________________ THE UNIVERSITY OF OTTAWA March 2011 © Mike Stewart, 2011 Statement of Contribution of Collaborators I, Michael Stewart, hereby declare that I am the sole author of each chapter in this thesis, unless otherwise indicated, as in the case of Chapters 2 – 5. In these chapters, I am the primary author, and performer of the work, with the exception of Chapter 3, wherein I was responsible for 50% of the authoring and experimentation work. My supervisors, Dr. Arturo Macchi of the Department of Chemical and Biological Engineering, University of Ottawa, and Dr. Edward John Anthony of CanmetENERGY, Natural Resrouces Canada, Ottawa, supervised my work during the M.A.Sc. program. Signature: _________________________________ Date: ____________________
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Acknowledgements First and foremost, I would like to thank my co-supervisors Dr. Edward John Anthony and Dr. Arturo Macchi for their guidance, support and kindness throughout my studies and research at the University of Ottawa and Natural Resources Canada. It is Arturo’s persuasiveness that I can credit for the challenging and rewarding experiences I have had in performing this work. And had it not been for Ben’s skill as a researcher, and for his trust in me, my research career would not likely have been nearly as successful and productive as it was. I would also like to acknowledge the contributions of my co-workers at CanmetENERGY, Robert Symmonds and Dennis Lu, for their guidance and assistance in operating the experimental apparatuses. Special thanks are given to Vasilije Manovic for his exceptional skills as a researcher and with the SEM, and for our meaningful discussions on sulfation phenomena. Acknowledgement is also giving to the funding support of this work by the Ontario Ministry of Training and Colleges and by the National Sciences and Engineering Research Council of Canada. Thanks are also due to Dr. David Granastein for his editorial work on my published works. Lastly, I would like to thank my friends, family and girlfriend, Melissa, for their unflinching support and encouragement throughout my studies.
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Abstract Oxy-fuel fired circulating fluidized bed combustion (CFBC) provides a means to generate electrical power while reducing anthropogenic CO 2 while at the same time reducing the acid-rain precursor, SO 2 by utilizing in-situ limestone addition. Although the technology has been around for 30 years, it has only recently been gaining considerable attention, with a handful of pilot-scale units worldwide. Oxy-fuel is largely similar to standard air-fired combustion but differs in a few key respects, one of which is in the elevated concentrations of CO 2 and H 2
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Mike_Stewart_-_Thesis_-_Oxy-fuel_Sulfation_-_Apr_2011 -...

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