水热与热解交叉炭化生物质制备高品质高炉喷吹燃料：理化特性和气化动力学分析

党晗; 徐润生; 张建良; 王明涌; 李进华

doi:10.1007/s12613-023-2728-0

Volume 31 Issue 2

Feb. 2024

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文章导航 > 矿物冶金与材料学报（英文） > 2024 > 31(2): 268-281

Han Dang, Runsheng Xu, Jianliang Zhang, Mingyong Wang, and Jinhua Li, Cross-upgrading of biomass hydrothermal carbonization and pyrolysis for high quality blast furnace injection fuel production: Physicochemical characteristics and gasification kinetics analysis, Int. J. Miner. Metall. Mater., 31(2024), No. 2, pp. 268-281. https://doi.org/10.1007/s12613-023-2728-0

Cite this article as:

Han Dang, Runsheng Xu, Jianliang Zhang, Mingyong Wang, and Jinhua Li, Cross-upgrading of biomass hydrothermal carbonization and pyrolysis for high quality blast furnace injection fuel production: Physicochemical characteristics and gasification kinetics analysis, Int. J. Miner. Metall. Mater., 31(2024), No. 2, pp. 268-281. https://doi.org/10.1007/s12613-023-2728-0

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研究论文

水热与热解交叉炭化生物质制备高品质高炉喷吹燃料：理化特性和气化动力学分析

1)
北京科技大学绿色低碳钢铁冶金全国重点实验室, 北京 100083, 中国
2)
School of Chemical Engineering, The University of Queensland, Queensland 4072, Australia

通讯作者:
徐润生 E-mail: xu_runsheng@163.com

李进华 E-mail: 1304503396@qq.com

文章亮点

(1) 提出了热解和水热炭化交叉升级制备生物质炭的工艺。

(2) 处理后的生物质炭可以接近无烟煤的等级。

(3) 生物质炭的最佳制备路线是先水热炭化后热解。

(4) 提出了生物质炭制备和高炉喷吹的耦合工艺。

中文摘要

本文提出了一种生物质交叉升级工艺，将水热炭化和热解相结合，生产出高质量的高炉喷吹燃料。结果表明，升级后的生物炭挥发物含量在 16.19% 至 45.35% 之间，碱金属含量、灰分含量和比表面积显著降低。生物质炭生产的最佳途径是先水热炭化后热解，从而获得热值更高、芳香结构更合理、石墨化程度更高的生物质炭。样品的表观活化能（E）范围为 199.1 至 324.8 kJ/mol，其中水热–热解（P-HC）的 E 为 277.8 kJ/mol，低于原生物质、初级生物质炭和无烟煤。这使得 P-HC 更适合用作高炉喷吹燃料。此外，论文还提出了在高炉中喷吹 P-HC 的工艺路线，并计算了潜在的环境效益。当取代 40wt% 的喷煤时，P-HC 具有最大的碳减排潜力，可减少 96.04 kg/t 的排放量。

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Research Article

Cross-upgrading of biomass hydrothermal carbonization and pyrolysis for high quality blast furnace injection fuel production: Physicochemical characteristics and gasification kinetics analysis

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Abstract

Abstract

The paper proposes a biomass cross-upgrading process that combines hydrothermal carbonization and pyrolysis to produce high-quality blast furnace injection fuel. The results showed that after upgrading, the volatile content of biochar ranged from 16.19% to 45.35%, and the alkali metal content, ash content, and specific surface area were significantly reduced. The optimal route for biochar production is hydrothermal carbonization–pyrolysis (P-HC), resulting in biochar with a higher calorific value, C=C structure, and increased graphitization degree. The apparent activation energy (E) of the sample ranges from 199.1 to 324.8 kJ/mol, with P-HC having an E of 277.8 kJ/mol, lower than that of raw biomass, primary biochar, and anthracite. This makes P-HC more suitable for blast furnace injection fuel. Additionally, the paper proposes a path for P-HC injection in blast furnaces and calculates potential environmental benefits. P-HC offers the highest potential for carbon emission reduction, capable of reducing emissions by 96.04 kg/t when replacing 40wt% coal injection.
- blast furnace injection;
- biomass;
- cross-upgrading;
- hydrothermal carbonization;
- pyrolysis;
- physicochemical properties;
- gasification properties

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