脉冲气流干燥机Pulse Pneumatic Drier

成都气流干燥机

一、工作原理及应用范围介绍 Introduction of Working Principle and Scope of Application

脉冲气流干燥又称为瞬间干燥，它是利用高速热空气气流带动物料作瞬间加速运动后又瞬间降速运动，形成脉冲式运动。其目的是强化传热传质，从而达到高效、快速、瞬间脱除水分之目的。对于热敏性或低熔点物料不会造成过热或分解，是一种连续、高效、快速的固体流态化瞬间脱除水分的干燥方式，适用于粒径范围在5μm~5mm之间的粉粒状物料表面水的快速干燥。且所干燥的物料，不会产生变质现象。适用于制药、化工、食品、建材、塑料等行业的粉状、颗粒状物料的干燥脱水。如：

l  医药食品：、苯茶吡唑酮、茶粕、草酸催化剂、沉淀炭粉、对乙酰氮基苯磺酰氨、对氨基水杨酸、哆耳玛托、金霉素、焦硅酸钠、糠氯酸咖啡渣四环素、玉米蛋白。

l  化工行业：ABC中间体、ABS树脂、ASC、白炭黑、促进剂mdm、触媒、对苯二酸、二乙苯铵、二氧化钛、活性碳、氟硅酸钠、氟石矿、硅胶粉末、合成树脂、磷酸钙、聚丙烯树脂、三氧化铁、碳酸钙、氧化铁、石膏缓凝剂、木粉、木屑、米糠。

    Pulse pneumatic drying is also called instant drying, which forms pulse-type movement by using high-speed hot air flow to drive the material to make instant deceleration movement after instant acceleration movement. Its purpose is to intensify the heat and mass transfer so as to achieve efficient, fast and instant dehydration. It may not cause overheat or decomposition to the materials with heat sensitivity or low melting point. It is a continuous, efficient and fast drying method of fluidizing instant dehydration for solids and applicable to fast removing surface water from 5μm~5mm powdery and granular materials. This method may not deteriorate the materials dried and is applicable to drying and dehydrating powdery and granular materials in such industries as pharmaceuticals, chemical engineering, food, building materials and plastics, as follows:

l  Pharmaceuticals and food: methaqualone, benzene tea pyrazolone, tea seed cake, Oxalic acid catalyst, precipitated carbon powder, p- acetnitrilobenzene sulfonyl ammonia, p-aminosalicylic acid, Duoermatuo, aureomycin, coke sodium silicate, chaff chlorate coffee grounds tetracycline and corn protein.

l  Chemical engineering industry: ABC intermediate, ABS resin, ASC, white carbon black, accelerant mdm, contact agent, terephthalic acid, diethylaniline, titanium dioxide, active carbon, sodium fluosilicate, fluorspar, silica gel powder, synthetic resin, calcium phosphate, polypropylene, ferric oxide, calcium carbonate, iron oxide, calcium sulphate retarder, wood  powder, sawdust and rice bran.

二、特点Characteristics

1. 颗粒在气流中高速度分散呈悬浮状态，气固两项间传热传质的有效性增大。同时由于采用脉冲管道，使得气固两项间的相对速度相差比较大，体积传热系数也较高，整体热效率在流化干燥机中是较高的。

2. 脉冲气流干燥设备结构简单、紧凑、体积小，整套机组造价相对较低。

3. 干燥时间极短(只有0.5—2秒)，适用于热敏性物料。

4. 气流干燥物料全过程都在管道中完成，产品不与外界接触，污染小、质量好，操作方便自动化程度高、产品品相好。

1.Particles disperse at high speed in the air flow and is in the suspending state, with the efficiency of heat and mass transfer between gas and solid phases increasing. At the same time, the pulse tube adopted increases the difference between the relative velocities of gas and solid phases and increases the volumetric heat transfer coefficient. So the overall heat efficiency is the highest among the fluidized driers.

2.The pulse pneumatic drier is a simple and compact structure with small volume. The whole set of unit costs little relatively.

3.The drying time is very short (only 0.5-2 seconds). So the equipment is applicable to heat sensitive materials.

4.Pneumatic drying of materials is fully completed in the tube. The products don’t contact with the outside, so there is little pollution and the products are of good quality and good appearance. The equipment is convenient to operate and  has high degree of automation.

三、工艺流程图Process flow diagram

四、技术参数（下表中数值仅供选型时参考）

Technical parameters (the values in the table below are for reference in type selection only)