School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China.
The Key Laboratory of Green Process and Engineering, Institute of Process Engineering, ChineseAcademy of Sciences, Zhongguancun, Haidian District, Beijing 100190, China.
Molecules. 2020 Jan 22;25(3):459. doi: 10.3390/molecules25030459.
This study aims at investigating the interaction and kinetics behavior of the co-gasification of digestate and lignite. The co-pyrolysis performances of digestate and lignite blended by dry process were better than that blended by wet process, while the wet-blending process could improve the performance in co-gasification stage because of the larger pore diameter and pore volume. When anaerobic digestion (AD) time was 40 days, the synergistic interaction between digestate and lignite were the most remarkable based on the results of thermogravimetric analysis (TG) and the experiments in the lab-scale downdraft fixed bed gasifier. Kinetics study showed that the increase of AD time and the addition of digestate in lignite decreased the activation energy of the co-gasification reaction.
本研究旨在探讨沼渣与褐煤共气化过程中的相互作用和动力学行为。干混工艺下沼渣与褐煤的共热解性能优于湿混工艺，而湿混工艺由于孔径和孔体积较大，可改善共气化阶段的性能。当厌氧消化（AD）时间为 40 天时，基于热重分析（TG）和实验室规模下吸式固定床气化炉的实验结果，沼渣与褐煤之间的协同作用最为显著。动力学研究表明，AD 时间的增加和褐煤中沼渣的添加都降低了共气化反应的活化能。
