摘要
塔型连续式真空干燥设备是近年来发展起来的,其突出的特点是高效、节能和环保,主要用于颗粒性物料的真空干燥。这项技术已成功地应用于玉米和花生的干燥。目前正在开发以活性炭为载体的催化剂等化工材料的设备和技术。这种设备结构设计的主要难点是密封性能要好,在连续上下料时应保证干燥仓达到所要求的真空度;热效率要高,被干燥物料与加热表面应有尽可能大的接触表面;对被干燥物料的加热要均匀,应尽可能增加物料在干燥仓内交叉流动的机会。通过设计新型连续式旋转真空上、下料阀(关风器),采用菱形管表面加热和薄层交互式加热等措施解决了上述难题,效果良好。
The tower continuous vacuum dryer was a new kind of drying equipment that has been developed in recent years. Its prominent characteristics were high efficient production, saving energy and friendly environment. It could be used for drying of particle material that was required excellent quality. It has been applied to drying corn and peanut, and now was applying to catalyst of activated carbons. The main designing difficulty of the dryer structure was that the dryer must have excellent airtight performance in order to keep the required vacuum degree when continuous feeding and blowdown, the contact surface area between drying product and heater should be as big as they could in order to get high heat efficiency and must increase crossflowing factor of probability of drying product in drying room in order to uniformly supply heat for drying product. In this paper, the difficulty above-mentioned was well solved. The new continuous vacuum valve （rotary valve） was designed, heating surface of rhombus tube was adopted, and the product was crossflow in drying room, near drying room wall and center.
关键词
真空干燥
颗粒物料
关风器
谷物
催化剂
Vacuum drying
Particle material
Rotary valve
Corn
Catalyst
