Experiments were carried out in a circulating fluidized bed (CFB) system. The riser has a cross sectional area of 100 × 100mm², while the supply and recycle chambers of the loop-seal have the same cross-sectional areas. Sand having a Sauter mean diameter of $310\mu m$ was used as bed material. Throughout the experiment, the superficial air velocity of the riser and the height of the solid particles in the storage column were kept constant. Four types of loop-seal categorized by their aeration scheme were investigated: aeration at the bottoms of supply and recycle chambers with side aeration at the supply chamber wall (U_SRQ_S), aeration at the recycle chamber bottom with side aeration at the supply chamber wall (U_RQ_S), aeration at the supply chamber bottom with side aeration at the recycle chamber wall (U_SQ_R), and aeration at the bottoms of supply and recycle chambers with side aeration at the recycle chamber wall (U_SRQ_R). The relation between the solid circulating rate and the side aeration flow rate was modeled as a saturated function. The results show that the U_RQ_S and the U_SQ_R types provide the same initial solid circulation rate, which is higher than for the conventional U type loop-seal. For a certain fluidization number, the loop-seals with side aeration provide higher solid circulation rate and require lower total aeration flow rate. The loop-seal with side aeration at the supply chamber wall tends to provide higher solid circulation rate and sensitivity of the circulation rate. For a certain solid particles height in the storage column, the maximum solid circulation rate was restricted by the flow through the horizontal passage.

实验在循环流化床（CFB）系统中进行。冒口的横截面面积为100×100mm ²，而环形密封件的供给室和循环室的横截面面积相同。沙特平均直径为$310\mu 米$被用作床材料。在整个实验过程中，立管的表面空气速度和存储塔中固体颗粒的高度保持恒定。研究了按充气方案分类的四种类型的环封：供气室和循环室底部的通气，供给室壁上有侧通气（U _SR Q _S），循环室底部的通气，供给侧有通气室壁（U _R Q _S），供应室底部的通气，循环室壁的通气（U _S Q _R），供气室和再循环室底部的通气，循环室壁的通气（U _SR Q_R）。将固体循环速率和侧曝气流速之间的关系建模为饱和函数。结果表明，U _R Q _S和U _S Q _RC型提供了相同的初始固体循环速率，高于传统的U型环封。对于一定的流化数，带有侧曝气的环封可提供更高的固体循环速率，并且需要更低的总曝气流速。在供给室壁上带有侧充气的环形密封件倾向于提供更高的固体循环速率和循环速率的灵敏度。对于储存塔中一定的固体颗粒高度，最大固体循环速率受水平通道的流动限制。