Influence of lignin on coal gangue pyrolysis and gas emission based on multi-lump parallel reaction model and principal component analysis

被引:20
作者
Bi, Haobo [1 ]
Ni, Zhanshi [1 ]
Tian, Junjian [1 ]
Jiang, Chunlong [1 ]
Sun, Hao [1 ]
Lin, Qizhao [1 ]
机构
[1] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Jinzhai Rd, Hefei 230026, Peoples R China
基金
中国国家自然科学基金;
关键词
Pyrolysis characteristics; Coal gangue; Gas emission; Multi -lump parallel reaction; TG-FTIR; LIGNOCELLULOSIC BIOMASS; INTERACTION MECHANISM; MICROALGAE BIOMASS; BITUMINOUS COAL; PY-GC/MS; PRODUCTS; CHAR; CELLULOSE; BEHAVIOR; WOOD;
D O I
10.1016/j.scitotenv.2022.153083
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The effects of lignin (LIG) on coal gangue (CG) pyrolysis characteristics, gas emissions, and multi-lump parallel reaction modeling are studied in this paper. The combined thermogravimetry and Fourier infrared spectrometer were used to obtain the weight loss and gas product functional group data of the co-pyrolysis of coal gangue and lignin. Gaussian peaks were used to analyze the reaction degree of different proportions of lignin added to coal gangue at different temperatures. Moreover, principal component analysis (PCA) is applied to further analyze pyrolysis reaction process. During the pyrolysis of C1L3 samples, a synergistic interaction was discovered. The optimal mixing ratio of coal gangue and lignin during pyrolysis was obtained. The influence mechanism of lignin on coal gangue pyrolysis is studied in this article, which can provide technical support for the reduction and resource utilization of coal gangue. There are six-lump parallel reactions in pyrolysis after CG and LIG are mixed. The addition of LIG changed the CO2 release law of CG pyrolysis. The strengthening of coal gangue disposal research is of positive significance for improving the environment and increasing the utilization rate of coal.
引用
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页数:12
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