Abstract
It needs to be improved the conversion efficiency and stable operation of conventional pyrolysis with high-temperature flue gas heating (HFH). Herein, a new radiative heating (RH) pyrolysis method is proposed. Experimental studies are carried out on a self-made radiation pyrolysis pilot plant to investigate the effects of different factors (pyrolysis final temperature, residence time, and carrier gas volume) on product distribution. The results show that with the increase of pyrolysis temperature, the yield of the gas phase consistently increases, and the proportion of CH4 and H2 in the pyrolysis gas reaches 62.31% at 700 °C. The yield of the liquid phase increases and then decreases. The recovery rate of pyrolysis oil achieves 68.07% when the pyrolysis temperature is 600 °C with main components of ketones and unsaturated hydrocarbon compounds. The yield of the solid phase consistently decreases. The RH in this work generates more pyrolysis gas in the pyrolysis process and alleviates the effects of fouling layers on the continuous operation of the equipment which has guiding significance for the efficient resource utilization of oil sludge.
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Funding
This work was supported by the National Key R&D Program of China (No. 2020YFC1910000) and Key Technology Research and Development Program of Shandong Province (No. 2019JZZY020310).
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Zhanlong Song: funding acquisition, methodology, supervision, writing—review and editing. Tao Tang: data curation, writing—original draft, writing—review and editing, conceptualization, investigation. Baolin Xu: validation, material preparation, data collection, and analysis. Jun Yu: conceptualization. Ying Su: conceptualization. Yingping Pang: funding acquisition, Supervision, visualization, writing—review and editing. Xiqiang Zhao: conceptualization. Jing Sun: conceptualization. Yanpeng Mao: conceptualization. Wenlong Wang: supervision.
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Song, Z., Tang, T., Xu, B. et al. Pyrolysis characteristics and product distribution of oil sludge based on radiant heating. Environ Sci Pollut Res 31, 23011–23022 (2024). https://doi.org/10.1007/s11356-024-32469-w
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DOI: https://doi.org/10.1007/s11356-024-32469-w