Simulation of the deoxygenated and decarburized biomass cascade utilization system for comprehensive upgrading of green hydrogen generation

被引:3
|
作者
Sun, Zhao [1 ]
Hu, Chenfeng [1 ]
Zhang, Rongjun [2 ]
Li, Hongwei [2 ]
Wu, Yu [2 ]
Sun, Zhiqiang [1 ]
机构
[1] Cent South Univ, Sch Energy Sci & Engn, Changsha 410083, Peoples R China
[2] SINOPEC, Res Inst Petr Proc, State Key Lab Catalyt Mat & React Engn, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
Biomass gasification; Chemical looping; Hydrogen production; Synergistic deoxygenation and decarburization; Thermodynamic simulation; RESPONSE-SURFACE METHODOLOGY; STEAM GASIFICATION; GAS-PRODUCTION; CATALYSTS; SORPTION; DESIGN; CARBON; WATER; WOOD;
D O I
10.1016/j.renene.2023.119504
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Steam gasification of biomass is of great significance for achieving efficient hydrogen-rich syngas production. However, the yield and the quality of H-2 in the product require further improvements. In this study, a strengthened biomass cascade utilization system via synergistic deoxygenation and decarburization is investigated. The system is composed of a deoxygenated and decarburized gasification reactor and a deoxidizer and decarburizer material regenerator. In the gasification reactor, a series of deoxidizer and decarburizer materials, CaO-Fe (Ca: Fe > 1.0), are applied for accomplishing high-quality hydrogen production; In the regenerator, the deoxidizer and decarburizer material is regenerated (CaCO3+ Ca2Fe2O5 -> CaO-Fe) with released gas utilization. The effects of gasification temperatures, Ca/Fe, H2O/C, and (CaO + Fe)/B mole ratios are evaluated by Aspen Plus, achieving comprehensive optimization of the parameters. The H-2 yield reaches 68.16 mol s(- 1) kg(-1) biomass and the H-2 concentration is up to 93.58 vol%, which increases by 254.45 % and 109.87 % compared with the results without deoxygenation and decarburization. Additionally, the deoxidizer and decarburizer material can be completely regenerated via released gas reduction, thereby ensuring the consistent looping of the entire system. This paper sheds light on the synergistic deoxygenation and decarburization methodology for biomassto-hydrogen generation, which provides a robust guidance for further experiments in the future.
引用
收藏
页数:14
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