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Pr. Tariq Shamim

Head of engineering program at the College of Arts and Sciences of the University of Michigan-Flint (UMF), USA

Queen Mary University of London, United Kingdom

 

Talk Title
Investigation of Hydrogen Production using Chemical Looping Reforming

Talk Abstract
 

Due to growing awareness of negative environmental impacts of fossil fuel usage, the interest in switching to decarbonized fuels such as hydrogen (H2) is growing. Since H2 is a secondary or intermediate energy carrier, it is mainly produced from the primary fossil fuels. Steam reforming of methane (CH4) is one of the most common H2 production methods. However, carbon dioxide (CO2) is also produced during the process which is separated and captured by using costly and energy-intensive technologies. Chemical looping reforming (CLR) is a relatively new method to produce hydrogen and is also used to convert solid, liquid or gaseous fuels to energy. There are various advantages of this method such as inherent CO2 capture, minimal NOx emissions and the hydrogen production. In this process, there is no direct contact between the fuel and oxidizer. This method utilizes oxygen from an oxygen carrier which may be a transition metal. The idea is to split the combustion process into three separate sub-processes by employing three separate reactors: air reactor where the oxygen carrier is oxidized by air, fuel reactor where natural gas is oxidized to produce a stream of CO2 and H2O and steam reactor where the steam is reduced to produce H2.

This talk describes our current research program on the investigation of H2 production using CLR. The talk will discuss the results of our recent study in which a system level thermodynamic model and a computational fluid dynamics (CFD) model for CLR reactors have been developed. The models employed conservation of mass and energy for all the components of the CLR system. CFD simulations were performed using an open source code MFiX, developed by National Energy Technology Lab (NETL), by employing the two-fluid model which considers solid and gas as the interpenetrating continua where the solid viscous stress tensor is calculated using the kinetic theory of granular flow. The developed models were employed to investigate the effect of various operating parameters such as mass flow rates of air, fuel, steam and oxygen carrier and fraction of inert material on hydrogen and CO2 production and key reactor temperatures. The results show that the H2 production increases with the increase in air, fuel and steam flow rates up to a certain limit and stays constant for higher flow rates. On the other hand, the increase in oxide flow rate and fraction of inert material increase the H2 production up to a particular value, followed by a decreasing effect on the H2 production. The talk will also discuss the effect of using different oxygen carriers on H2 production. By comparing with other H2 production technologies, the talk will discuss the salient features and research issues of the CLR technology. Details and challenges of the CFD and systems level modeling approaches for CLR systems will also be discussed.

Short Biography

 

Dr. Tariq Shamim is a professor and head of engineering program at the College of Arts and Sciences of the University of Michigan-Flint (UMF). He earned his doctorate in mechanical engineering and a master’s in aerospace engineering from the University of Michigan - Ann Arbor. He received a second master’s in mechanical engineering from the University of Windsor, Canada, and holds his bachelor’s degree in mechanical engineering from the N.E.D. University in Karachi, Pakistan. Prior to joining the UMF, he served as a faculty member at the University of Michigan-Dearborn and the Masdar Institute of Science and Technology, Abu Dhabi. He also held visiting faculty appointments at the Massachusetts Institute of Technology, National University of Singapore, American University of Sharjah, Oak Ridge National Laboratory and Ford Motor Company. He specializes in the broad area of sustainability with special focus on clean energy technologies. His research and consulting work has been supported by several grants from the NSF, US Department of Defense, US Department of Energy, automotive and aerospace companies, and the government of Abu Dhabi. He has been actively involved in many professional organizations including American Society of Mechanical Engineers (ASME), Society of Automotive Engineers (SAE) and Combustion Institute. He is a recipient of SAE International Ralph Teetor award (2004) for excellence in teaching. He is a fellow of the ASME and is currently serving as a Subject Editor of Applied Energy journal.

 
Talk Keywords
 Hydrogen Production, Chemical Looping Reforming, Oxygen Carrier, Computational Fluid Dynamics.
 
Target Audience
 Students, Post doctoral fellows, Industry professionals, Doctors and professors
 
Speaker-intro video
TBA 
 

The International Conference on Innovative Applied Energy (IAPE’18)