1、 I 摘 要 本设计拟采用了压力喷雾干燥系统来生产处理量为 100T/d 的牛乳。设计中采用了 旋转型压力式喷嘴，以及并流喷嘴雾化式干燥装置。通过物料衡算和热量衡算确定了操 作参数和干燥器的结构参数以及通过通风量、喷嘴结构及进料量计算干燥塔的直径，塔 高的计算时采用干燥强度法估算然后应用高径比进行核算等基础性运算对干燥器进行 了全面设计，使干燥塔的结构更合理，效率更高并且尽可能的克服干燥器原有的不足， 发挥设备本身的最大效能，达到节能降耗的目的，以提高乳品的生产率。除尘装置方面 本文采用袋滤器和旋风分离器对粉尘进行回收，使其进行再造粒，能够使颗粒的溶解性 能更好，提高产品的质量。并且在适当的压
2、力降和操作弹性的前提下，对干燥塔附属装 置进行了合理的设计并严格按照国家标准选取标准件的规格，从而进一步达到提高喷雾 干燥系统的效率和产率，节能降耗的目的。通过设计算出了干燥塔的塔高为 19m，塔径 为 4.6m，下部锥体高度为 4.42m，锥角为 55，空气消耗量为 27779.65kg/h，实际的 进口空气量为 28071.34kg/h，体积消耗量为 23636.07m 3/h，干燥器的热效率为 56.5%。 随着喷雾干燥技术的发展，喷雾干燥已经成为工业生产中较为广泛的干燥方法。 关键词：喷雾干燥；节能；降耗；结构；除尘装置 II Abstract This design adopted
3、the press of spray drying system to produce that the milks productivity is 100T/d. This design adopts the rotating pressure nozzle and the concurrent flow atomizing nozzle drying equipment. Through the material balance and quantity of heat ensure operate parameter and structure parameter of drying t
4、ower, and through blowing rate structure of the nozzle and inlet amount to calculate the diameter of drying tower, using the method of drying strength to estimate tall of the tower, the apply aspect ratio to adjust accounts . So that make sure the reasonable of the structure, improve the effect and
5、express the maximum efficacy of the device achieve the aim of energy conservation. The dedusting device adopts the bag filter and cyclone to recover the dust, and the particles can be dissolved a better performance. Under the premise of drying tower subsidiary of the device structure, spray drying s
6、ystem to improve the efficiency and yield to achieve the purpose of energy saving. Through the design, it works out that the drying towers height is 19m, diameter is 4.6m, bottom cones height is 4.42m, cone angle is 55, air consumption is 27779.65kg/h, practical import air amount is 28071.34kg/h, volume consumption is 23636.07m3/h, the drying towers heat efficiency is 56.5%. Along with the development of the spray drying technology, it has been a more extensive drying method in the indust
