Comparison of Iron and Tungsten Based Oxygen Carriers for Hydrogen Production Using Chemical Looping Reforming

2nd International Conference on Green Energy Technology

能源学;生态环境科学

Khan, M.N.^1 ; Shamim, T.^1

Institute Center for Energy (iEnergy), Department of Mechanical and Materials Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates^1

关键词: Base metals;    Chemical-looping reforming;    Electrical power;    Oxygen Carrier;    Production efficiency;    Thermodynamic model;    Tungsten (w);    Tungsten oxide;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/83/1/012013/pdf
DOI  :  10.1088/1755-1315/83/1/012013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Hydrogen production by using a three reactor chemical looping reforming (TRCLR) technology is an innovative and attractive process. Fossil fuels such as methane are the feedstocks used. This process is similar to a conventional steam-methane reforming but occurs in three steps utilizing an oxygen carrier. As the oxygen carrier plays an important role, its selection should be done carefully. In this study, two oxygen carrier materials of base metal iron (Fe) and tungsten (W) are analysed using a thermodynamic model of a three reactor chemical looping reforming plant in Aspen plus. The results indicate that iron oxide has moderate oxygen carrying capacity and is cheaper since it is abundantly available. In terms of hydrogen production efficiency, tungsten oxide gives 4% better efficiency than iron oxide. While in terms of electrical power efficiency, iron oxide gives 4.6% better results than tungsten oxide. Overall, a TRCLR system with iron oxide is 2.6% more efficient and is cost effective than the TRCLR system with tungsten oxide.