Reviewing the dynamic modeling aspects of chemical looping hydrogen production
Priyam Kataria, Wan Sieng Yeo, Jobrun Nandong
Abstract
This article thoroughly assesses the Chemical Looping Hydrogen Production (CLHP) process, aiming to enhance understanding of detailed dynamic simulations. It includes a concise historical overview of chemical looping technology, emphasizing recent commercial applications like combustion engines. The article discusses several cases of pilot and sub-pilot scale investigations, along with critical insights to identify the issues surrounding the commercialization of this technology. Furthermore, the review is extended to analyze several aspects of the process to develop a dynamic simulation model, including reactants, operating modes, kinetic parameters, and the process models. Key process materials such as reduction fuel, oxygen carriers and solid supports are carefully chosen to achieve target conversions and net-zero carbon emissions. The three-reactor system is meticulously defined, focusing on closed-loop production's thermodynamic and economic benefits. Detailed information is provided on reactions within each unit and the required operating regimes for continuous solid circulation. The review also examines mathematical modeling methods for dynamic simulation implementation to determine gas-solid profiles at pellet and reactor scales. Simulations derived from this study's concepts can be refined through parameter modification for optimal process operation and control system analysis for real-world industrial applications. Ultimately, this review contributes significantly to the commercialization of CLHP, offering an economically viable solution for sustainable hydrogen production.