Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China.
Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China.
Bioresour Technol. 2021 Jun;330:125011. doi: 10.1016/j.biortech.2021.125011. Epub 2021 Mar 19.
Biomass chemical looping gasification (CLG) technology is an important utilization form of renewable energy. In order to obtain high-quality syngas, CaO/FeO was used as a composite oxygen carrier for biomass CLG in this study. The CLG experiment of corn straw and the study of oxygen carrier recycling were carried out, simultaneously, the reaction mechanism was further discussed. Results shown adding CaO to oxygen carrier could significantly improve the quality of syngas through increasing the H and reduce Greenhouse gas (CO and CH, about 14% reduction). Besides, the ratio of FeO to CaO, steam to biomass, and oxygen carrier to biomass all affected the syngas composition (the H/CO variation from 1.82 to 2.19), while the temperature had obvious influence on the gas yield of CLG. The most possible reaction mechanism shown that the variation of Ca might be the main factor of gas composition fluctuation.
生物质化学链气化（CLG）技术是可再生能源的一种重要利用形式。为了获得高质量的合成气，本研究采用 CaO/FeO 作为生物质 CLG 的复合氧载体。进行了玉米秸秆的 CLG 实验和氧载体回收研究，同时进一步探讨了反应机理。结果表明，通过添加 CaO 到氧载体中可以显著提高合成气的质量，同时减少温室气体（CO 和 CH，约减少 14%）。此外，FeO 与 CaO 的比例、蒸汽与生物质的比例以及氧载体与生物质的比例都影响合成气的组成（H/CO 从 1.82 变化到 2.19），而温度对 CLG 的气体产率有明显影响。最可能的反应机理表明，Ca 的变化可能是气体成分波动的主要因素。
