【摘要】 在一喷动流化床（直径５０ｍｍ）试验台上，采用０．６３～１．６０ｍｍ的原煤颗粒，进行了加料速率、流化气、喷动气以及压力等不同因素对颗粒在床内停留时间影响的实验研究，发现改变喷动床中气体流量，物料停留时间基本不变；改变流化气或喷动气，尤其后者，对停留时间影响明显；而一旦增加压力，会使停留时间延长．实验数据可为此类床型作为干燥器、气化裂解炉等的研究和应用提供有益参考．更多还原

【Abstract】 The effects of feeding rate, fluidizing gas flow rate, spout gas flow rate and pressure on the residence time of coal particles in the range of 0.63～1.60 mm were investigated in an experimental spout fluidized bed. The experimental results showed that the particle residence time was constant in the spout bed with different gas flow rate, but in the spout fluidized bed, the particle residence time changed obviously when fluidizing gas or spout gas flow rate was changed. The particle residence time also increased when pressure was increased.更多还原