Preparation of Biomass Hydrochar and Application Analysis of Blast Furnace Injection

Guangwei Wang, Renguo Li, Jiayun Dan, Xiang Yuan, Jiugang Shao, Jiawen Liu, Kun Xu, Tao Li, Xiaojun Ning () and Chuan Wang
Additional contact information
Guangwei Wang: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Renguo Li: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Jiayun Dan: Hunan Valin Xiangtan Iron and Steel Co, Ltd., Xiangtan 411101, China
Xiang Yuan: Hunan Valin Xiangtan Iron and Steel Co, Ltd., Xiangtan 411101, China
Jiugang Shao: Research Institute of Iron and Steel of Jiangsu Shasteel, Zhangjiagang 215625, China
Jiawen Liu: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Kun Xu: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Tao Li: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Xiaojun Ning: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Chuan Wang: Swerim AB, SE-971 25 Luleå, Sweden

Energies, 2023, vol. 16, issue 3, 1-16

Abstract: Hydrothermal carbonization (HTC) technology was used to carbonize and improve biomass raw material to obtain hydrochar. The effects of HTC temperature and holding time on the yield, composition, structure, combustion behavior, and safety of hydrochar were studied systematically. In addition, the results show that with the increase in HTC temperature and the prolongation of holding time, the yield of hydrochar gradually reduces, the fixed carbon content of hydrochar increases, the volatile content decreases, and a large number of ash and alkali metals enter the liquid phase and are removed. Further, the analysis of the combustion properties and the structure of hydrochar can be observed in that, as the HTC process promotes the occurrence of polymerization reactions, the specific surface area gradually reduces, the degree of carbon ordering increases, and the combustion curve moves toward the high-temperature zone and gradually approaches bituminous coal. Since biomass hydrochar has the characteristic of being carbon neutral, blast furnace injection hydrochar can reduce CO 2 emissions, and every 1 kg/tHM of biomass hydrochar can reduce CO 2 emissions by 1.95 kg/tHM.

Keywords: biomass; hydrothermal carbonization; hydrochar; blast furnace injection; CO 2 emission reduction (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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