Study of synergistic behavior during bituminous coal-cow manure co-gasification: The role of intrinsic AAEM and organic matter

IF 6.9 1区工程技术 Q2 ENERGY & FUELS International Journal of Coal Science & Technology Pub Date : 2024-07-28 DOI:10.1007/s40789-024-00694-w

Hongqiao Lu, Meng Ma, Juntao Wei, Yonghui Bai, Peng Lv, Jiaofei Wang, Xudong Song, Guanghua Lu, Guangsuo Yu

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Abstract

Co-thermal chemical conversion of coal and biomass is one of the important ways to realize efficient and clean utilization of coal. In this study, a typical Ningdong coal-Yangchangwan bituminous coal and cow manure were used to study the synergistic effect of intrinsic alkali, alkaline earth metals (AAEM) and organic matter on the co-gasification of coal and biomass by thermogravimetry analyzer (TG). The results showed that AAEM had obvious synergistic promotion effect on the gasification of a bituminous coal-cow manure mixture in the isothermal gasification (1000 ℃), whereas the organic matter will show the opposite effect on the process. To further investigate the effect of organic matter on the gasification process, the influence of organic matter on non-isothermal (25-1000 ℃) gasification reaction was investigated with heating rate of 10 ℃ /min, the kinetic parameters of the gasification reaction were obtained by Coats-Redfern method. The increase of biomass mass fraction in the sample facilitates the migration of alkali metals from the material to the solid phase. The possible mechanism of the synergistic effect of intrinsic AAEM/organic matter on the co-gasification process was proposed.

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烟煤-牛粪联合气化过程中的协同行为研究：固有 AAEM 和有机物的作用

煤与生物质共热化学转化是实现煤炭高效清洁利用的重要途径之一。本研究以典型的宁东煤-羊场湾烟煤和牛粪为原料，利用热重分析仪（TG）研究了固有碱、碱土金属（AAEM）和有机质对煤与生物质共气化的协同效应。结果表明，在等温气化（1000 ℃）过程中，AAEM 对烟煤-牛粪混合物的气化有明显的协同促进作用，而有机物对该过程的影响则相反。为了进一步研究有机物对气化过程的影响，研究了有机物对非等温（25-1000 ℃）气化反应的影响，加热速率为 10 ℃/min，气化反应动力学参数由 Coats-Redfern 方法获得。样品中生物质质量分数的增加促进了碱金属从材料向固相的迁移。提出了固有 AAEM/有机物对协同气化过程产生协同效应的可能机制。

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来源期刊

International Journal of Coal Science & Technology Multiple-

CiteScore

11.40

自引率

8.40%

发文量

678

审稿时长

12 weeks

期刊介绍： The International Journal of Coal Science & Technology is a peer-reviewed open access journal that focuses on key topics of coal scientific research and mining development. It serves as a forum for scientists to present research findings and discuss challenging issues in the field. The journal covers a range of topics including coal geology, geochemistry, geophysics, mineralogy, and petrology. It also covers coal mining theory, technology, and engineering, as well as coal processing, utilization, and conversion. Additionally, the journal explores coal mining environment and reclamation, along with related aspects. The International Journal of Coal Science & Technology is published with China Coal Society, who also cover the publication costs. This means that authors do not need to pay an article-processing charge.