Design and comparisons of three biomass based hydrogen generation systems with chemical looping process

• DOI: 10.1016/j.ijhydene.2014.08.115
• Publication Date: 2014-09-17T17:44:43Z
• Authors: Linbo Yan; Boshu He; Xiaohui Pei; Chaojun Wang; Zhipeng Duan; Jingge Song; Xuezheng Li
• Keywords: Chemical-Looping Combustion; Carbon fibers

The technology of hydrogen generation from biomass has attracted more and more attentions nowadays. In this work, three biomass-based chemical looping hydrogen generation systems, Systems A, B and C, are comprehensively studied. System A is mainly composed of biomass hydrogasification, methane reformation and the calcium-looping based CO2 absorption. System B is mainly composed of biomass steam gasification and Fe2O3/FeO-looping based hydrogen generation circulation. System C is mainly composed of biomass steam gasification and Fe3O4/FeO-looping based hydrogen generation circulation. The three systems are modeled and their characteristics are analyzed and compared thermodynamically. System A has the highest cold gas efficiency (CGE) which is 72%; System B has the lowest CGE of 54% but it can generate additional nitrogen as byproduct; System C has the highest hydrogen generation ratio and its CGE is moderate and is 60%. The carbon dioxide sequestration rates of the three systems are all above 90%.