Oxyfuel Cofiring Characteristics of Biomass with Ultralow Volatile Carbon-Based Fuels
Publication: Journal of Energy Engineering
Volume 149, Issue 1
Abstract
Biomass from agricultural production is a renewable energy source with a high-volatile content. Semicoke (SC) and gasification residual carbon, which are ultralow volatile carbon-based fuels (LVFs), are by-products of the coal chemical industry, which are over capacity and urgently need to be cleanly and effectively consumed. Biomass and LVFs exhibit complementary fuel characteristics, particularly the volatile content, which can potentially be coprocessed efficiently. Furthermore, oxyfuel combustion technology can not only realize carbon dioxide () capture and benefit from carbon neutrality, but also effectively reduce emissions. The cocombustion of biomass and ultralow volatile fuel under oxyfuel conditions can both use individual benefits and effectively control pollutant emissions. However, the cofiring characteristics and interaction mechanisms of LVF with biomass in an oxyfuel atmosphere are yet to be fully understood. In this study, three ultralow volatile fuels and one typical biomass were selected to explore the oxyfuel cocombustion characteristics via thermogravimetric experiments. The experimental results indicated that blending with wheat straw (WS) improved the overall combustion performance, the ignition point was close to that of WS, and the burnout temperature was close to the average value of the two individual fuels. An increase in the oxygen content can effectively enhance the combustion feature of ultralow volatile fuels while it has little effect on the burnout performance of biomass. In the presence of high-content , the decomposition of carbonate in ultralow volatile fuel is impeded and the decomposition temperature is slightly increased. The present investigation can promote the efficient co-utilization of inferior LVFs and biomass, which also benefits capture, carbon neutrality, and even negative carbon emissions.
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Data Availability Statement
The data that support the present research are available from the corresponding author upon reasonable request.
Acknowledgments
The financial supports from the National Natural Science Foundation of China (No. 52176129) and the research project (SMDZ-2020ZD-1-03) of Shaanxi Provincial Coal Geology Group Co. Ltd. are greatly acknowledged.
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Journal of Energy Engineering
Volume 149 • Issue 1 • February 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: May 23, 2022
Accepted: Aug 18, 2022
Published online: Oct 29, 2022
Published in print: Feb 1, 2023
Discussion open until: Mar 29, 2023
ASCE Technical Topics:
- [Inorganic compounds]
- Air pollution
- Biomass
- Business management
- Carbon compounds
- Carbon dioxide
- Chemical processes
- Chemicals
- Chemistry
- Combustion
- Emissions
- Energy consumption
- Energy engineering
- Energy sources (by type)
- Environmental engineering
- Fuels
- Non-renewable energy
- Organic compounds
- Pollution
- Practice and Profession
- Renewable energy
- Sustainable development
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