National Engineering Laboratory for Reducing Emissions From Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan, 250061, China.
Shandong Academy of Environmental Sciences Company Limited, Jinan, 250013, China.
Environ Sci Pollut Res Int. 2024 Mar;31(15):23011-23022. doi: 10.1007/s11356-024-32469-w. Epub 2024 Feb 28.
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 CH and H 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.
需要提高传统高温烟道气加热（HFH）热解的转换效率和稳定运行。在此，提出了一种新的辐射加热（RH）热解方法。在自制的辐射热解中试装置上进行了实验研究，考察了不同因素（热解终温、停留时间和载气体积）对产物分布的影响。结果表明，随着热解温度的升高，气相产率持续增加，在 700°C 时，热解气中 CH 和 H 的比例达到 62.31%。液相产率先增加后减少。在 600°C 时，热解油的收率达到 68.07%，主要组分为酮类和不饱和烃类化合物。固相产率持续下降。本工作中的 RH 在热解过程中产生了更多的热解气，并减轻了积垢层对设备连续运行的影响，对油泥的高效资源化利用具有指导意义。
