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在普通喷动床环形区底部引入“充气”可消除环形区底部颗粒“死区”的影响，并能改善环形区气固间的热、质传递．在内径９６ｍｍ的夹套式干燥器中，以绿豆为实验物料，空气为干燥介质，采用间歇操作方式，考虑了充气和喷动气速以及热通量的影响，对导向管充气喷动床的干燥性能进行了研究．研究表明随着充气速度的增加，干燥速率先增大后减小；随着喷动气速的增加干燥速率先增加很快后缓慢增加；随着热通量的增加，干燥速率呈直线增加趋势．对实验数据分析得到：在最大允许充气速度范围内，有充气的导向管喷动床干燥器比没有充气时的导向喷动床的干燥效果明显增加，说明导向充气喷动床更有使用价值．
The introduction of “inflating” at the bottom of annular zone of common spouted bed can eliminate the influence of “dead space” on the bottom of annular zone and improve the heat and mass transfer between gas and solid in annular zone. In the inner diameter of 96mm jacketed dryer, mung bean as the experimental material, the air as the drying medium, using intermittent operation, taking into account the inflatable and jet speed and heat flux impact on the pilot tube inflatable bed spray drying Performance has been studied. The results show that with the increase of aeration velocity, the drying rate first increases and then decreases. The drying rate increases first and then increases slowly with the increase of the gas velocity. With the increase of heat flux, the drying rate increases linearly. The experimental data show that: in the maximum allowable inflation rate range, there is a significant increase in the drying effect of the inflated pilot spout bed dryer compared to the pilot spout bed without aeration, indicating that the pilot aerated spouted bed is more valuable.