A bubbling fluidized bed is generally used as the fuel reactor in chemical looping processes. However, insufficient gas–solid contact remains a steadfast problem. As such, we propose the use of internal baffles to split bubbles at a high gas velocity and to restrict the movement of large-scale solids in the fluidized bed. We investigated the effect of baffle arrangement on the bubble size and energy, pressure gradient, particle distribution, and particle velocity in a fluidized bed using a computational particle fluid dynamics simulation based on our experimental results. We discuss the main influencing factors, which include presence of caps, number of baffles, and the baffle opening ratio. The baffle structure with caps efficiently broke the large bubbles without creating jet flow. Three baffles were deemed suitable in the bed owing to the small bubble size and uniform gas–solid distribution in each compartment. We selected a baffle opening ratio of 20.5%, which improved the flow pattern without causing a significant increase in the pressure gradient and particle velocity through the baffles. We also discussed the potential for scaling up this baffled fluidized bed for industrial applications.

鼓泡的流化床通常在化学循环过程中用作燃料反应器。但是，气固接触不足仍然是一个坚定的问题。因此，我们建议使用内部折流板以高气体速度分裂气泡并限制大型固体在流化床中的运动。我们根据实验结果，通过计算颗粒流体动力学模拟研究了挡板布置对流化床中气泡尺寸和能量，压力梯度，颗粒分布和颗粒速度的影响。我们讨论了主要的影响因素，包括瓶盖的存在，挡板的数量和挡板的开口率。带盖的挡板结构有效地打破了大气泡，而没有产生喷射流。由于气泡大小较小且每个隔室中的气固分布均匀，因此三个折流板被认为适合在床上使用。我们选择的折流板开口率为20.5％，这改善了流型，而不会导致通过折流板的压力梯度和颗粒速度显着增加。我们还讨论了将该折流板扩大用于工业应用的潜力。