1、 I 摘摘 要要 振动流化床是一种成功的改型流化床， 是在近几十年里发展起来的一种新型 干燥装置。 但是现在从设计到工艺还没有一套成熟、 系统的理论和经验可以借鉴， 它在干燥技术的发展中是一个非常有创造性的领域， 在工业应用领域也具有非常 大的潜力。 振动流化床克服了传统流化床的许多缺点， 其应用领域正在不断开拓， 应用的行业也由开始时的制药、乳品等行业发展到轻工、化工、饮料、食品、矿 冶、饲料、化肥、种籽等行业。本设计是一套用于牛乳干燥的装置，它在普通流 化床基础上施加振动，由激振电机提供动力。振动流化床在强化传热传质方面优 于普通流化床，在干燥过程中由机械振动帮助物料流化，有利于边界层湍流
2、，强 化了传热传质，其干燥效果明显优于普通的流化床。 关键词关键词：干燥； 流化床； 振动 II ABSTRACT Vibrating fluidized bed is a new type of drying device and a successful version of fluidized bed which is developed in recent decades. However, there is not a mature system of theory and experience can draw from design to process. It is a ver
3、y creative field in the development of drying technology, and it has large development space in Industrial application. The vibrating bed has many advantages comparing to the conventional fluidized bed. And its applications are continually opening up. The applications of the device are not only phar
4、maceutical and dairy products, but also some other field, such as light industry, chemical industry, beverage, food, mining, forage, fertilizer, seeds and so on. The design of the device is used for drying milk. The vibration is imposed on ordinary fluidized bed, powered by the vibration motor. The vibrating fluidized is superior to the ordinary fluidized bed in heat and mass transfer. The mechanical vibration helps the fluidization of materials in the drying process, contributing to the bounda
