论文部分内容阅读
针对惰性粒子流化床干燥器,以洗衣粉悬浮液为对象,先后进行了气体分布板开直孔和开斜孔的流化干燥实验。通过测定干燥器的流体力学特性曲线,以及在相同进料量、进风温度、进风速度或惰性粒子直径条件下的体积传热系数曲线和热效率曲线,考察和分析了气体分布板两种不同的开孔结构对干燥器流体力学和传热性能的影响。结果表明,气体分布板开斜孔的床内气流阻力要高于开直孔的气流阻力,但其体积传热系数和热效率相对较高,即斜孔较直孔更加有利于床内传热。在此基础上,对惰性粒子流化床干燥器的生产调节措施进行了初步探讨。
For inert particle fluidized bed dryer, washing powder suspension as the object, has conducted a gas distribution plate open hole and open inclined hole fluidized drying experiments. By measuring the hydrodynamic characteristics of the dryer and the volumetric heat transfer coefficient curves and thermal efficiency curves under the same feed rate, inlet air temperature, inlet air velocity or inert particle diameter, two different gas distribution plates Influence of open cell structure on fluid mechanics and heat transfer performance of dryer. The results show that the air flow resistance in the inclined hole with gas distribution plate is higher than the airflow resistance in the open hole, but the volumetric heat transfer coefficient and thermal efficiency are relatively high, that is, the oblique hole is more conducive to heat transfer in the bed. On this basis, the production of inert particle fluidized bed dryer adjustment measures were discussed.