To clear the swirling flow pneumatic conveying performance for blocky fuel particles, particularly for lump coal particles, a side inlet guide vane swirling generator was developed and employed to study the efficiency and stability of lump coal particles in swirling flow pneumatic conveying. In total, 32 pilot scale tests for different conditions, including different airflow rates, solid mass flow rates, and swirling intensities, were conducted in this paper. The efficiency and stability of lump coal particles in swirling flow pneumatic conveying are thoroughly discussed by considering the static pressure loss and pressure fluctuation standard deviation. The pressure characteristics for different conveying stages and frequency spectrum constituents of the static pressure are also discussed. The results show that the swirling flow has better energy preservation characteristics and conveying performance in proper conditions. Four main factors contribute to the static pressure fluctuation in three different frequency bands. The results also show that a low mean gas velocity with a medium swirling intensity and a high mean gas velocity with a weak swirling intensity can improve the conveying stability. The swirling flow is more stable at the front of the pipeline; meanwhile, the axial flow is better in the second half.

为了消除块状燃料颗粒，特别是块煤颗粒的旋流气动输送性能，开发了侧进气导叶旋流发生器，并采用其研究了块煤颗粒在旋流气动输送中的效率和稳定性。本文总共进行了32种针对不同条件的中试规模测试，包括不同的空气流量，固体质量流量和涡旋强度。在考虑静压损失和压力波动标准偏差的基础上，全面讨论了块煤颗粒在旋流气力输送中的效率和稳定性。还讨论了不同输送阶段的压力特性以及静压力的频谱组成。结果表明，在适当的条件下，旋流具有较好的节能特性和输送性能。四个主要因素导致了三个不同频段的静压波动。结果还表明，具有中等旋流强度的低平均气体速度和具有较弱旋流强度的高平均气体速度可以改善输送稳定性。管道前端的旋流更稳定；同时，下半年轴向流动更好。结果还表明，具有中等旋流强度的低平均气体速度和具有较弱旋流强度的高平均气体速度可以改善输送稳定性。管道前端的旋流更稳定；同时，下半年轴向流动更好。结果还表明，具有中等旋流强度的低平均气体速度和具有较弱旋流强度的高平均气体速度可以改善输送稳定性。管道前端的旋流更稳定；同时，下半年轴向流动更好。