A vibrating fluidized bed drying device and drying method

Abstract

The invention relates to a vibration fluidized bed drying device and drying method. The device comprises a particle settling chamber, a vibration fluidized bed body and a material collection box. Theparticle settling chamber is provided with a material inlet and a gas outlet. The material collection box is provided with a discharging opening and a gas air supply opening. A settling area is arranged on the upper portion of the vibration fluidized bed body, and a pre-drying vibration distribution plate is arranged on the settling area. A fluidized bed layer is arranged on the lower portion of the vibration fluidized bed body, and an air distribution plate is arranged between the fluidized bed layer and the material collection box. Material holes and air holes are formed in the pre-drying vibration distribution plate and the air distribution plate. The fluidized bed layer is a dense-phase fluidized bed layer formed by inert particles located in the fluidized bed layer and to-be-dried powder entering from the material inlet. A heat exchanger is arranged in the fluidized bed layer. The material collection box, the vibration fluidized bed body and the pre-drying vibration distribution plate vibrate. By means of the device and method, materials hard to fluidize is fluidized well and dried fast, the heat utilization rate is high, the equipment size is small, and the cost is low.

Description

technical field [0001] The invention belongs to the field of drying powdery materials, and relates to a vibrating fluidized bed drying device and a drying method, which are used for drying solid powders, especially difficult-to-fluidize solid powders. Background technique [0002] The drying of solid powdery materials is the main link in the production process of mining, metallurgy, chemical, fertilizer, pharmaceutical, food and other enterprises. At present, there are various drying technologies and equipment to choose from. Among them, various fluidized bed dryers developed based on fluidization technology are widely used, such as vibrating fluidized bed dryers and fluidized bed dryers. The current various fluidized bed dryers show many characteristics when drying powdery materials, including simple structure, good heat transfer efficiency, large drying capacity, and stable product moisture content. But at the same time, it also has disadvantages: for difficult fluidized ...

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Problems solved by technology

[0003] The present invention provides a vibrating fluidized bed drying device and drying method to solve the problems of difficult fluidization of materials, high energy consumption in the drying process, low drying rate, complicated gas treatment equipment after drying, and high investment in environmental protection equipment.

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