旋转闪蒸干燥机

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

热空气以适宜的喷动速度从干燥机下段部呈旋流状进入搅拌粉碎干燥室内，同时物料由加料器定量加入塔内，热空气螺旋状上升，对物料产生强烈的剪切、吹浮、旋转气动作用，于是物料受到离心、剪切、碰撞、摩擦而被微粒化，强化了传质传热。在干燥机底部，较大较湿的颗粒体或者团状物在搅拌器的作用下被机械分散、破碎；湿含量较低、颗粒度较小的物料被旋转气流夹带上升，在上升过程中进一步干燥。由于气固两相作旋转流动，固相惯性大于气相，气、固两相间的相对速度较大，强化两相间的传质传热，所以该机干燥强度相对比较高。

闪蒸干燥机是集干燥、粉碎于一体的干燥设备，是一种连续、高效、快速的固体流态化强制搅拌分散干燥方式。适用于滤饼状、膏糊状、稀泥、浆状物料、板框压滤或离心机脱水的物料的烘干。如以下物料：

1.无机类：硼酸、碳酸钙、氢氧化物、硫酸铜、氧化铁、碳酸钡、三氧化锑、各种金属氢氧化物、各种重金属盐、合成冰晶石等；

2.有机物：阿特拉津（农药杀虫剂）、月桂酸隔、苯甲酸、安息香酸、杀菌丹、草酸钠、醋酸纤维素等；

3.陶瓷：高岭土、三氧化硅、粘土等；

4.染料类：蒽醌、黑色氧化铁、靛蓝颜料、丁酸、氢氧化钛、硫化锌、各种偶氮染料中间体。

5.食品类：大豆蛋白、胶疑淀粉、酒糟、小麦糖、小麦淀粉等。

Hot air spirally enters the stirring and crushing chamber from the lower section of drier at appropriate velocity; in the mean time, material quantitatively enters the tower from the feeder. The hot air rises up spirally, which makes strong pneumatic cutting, blowing and rotating actions on the material, so the material is pelletized through centrifugation, cutting, collision and abrasion and the mass and heat transfer is intensified. At the bottom of drier, large wet particles or clusters are mechanically dispersed and crushed under the action of stirrer, while the material with low water content and small particle size rises up along with the rotating air flow and is further dried in the rising course. The gas and solid phases move spirally, the inertia of solid phase is larger than that of gas phase, the relative velocity between the gas and solid phases is large and the mass and heat transfer between both phases is intensified. Therefore this equipment’s drying intensity is relatively high.

The flash drier is a drying equipment incorporating drying and crushing. It is a continuous, efficient and fast solid fluidized forced stirring dispersion drying manner, applicable to drying such materials as filter cakes, pastes, mud and slurry, plate pressure filtration or centrifuge-dehydrated materials, as follows:

1.Inorganic: boric acid, calcium carbonate, hydroxide, copper sulfate, ferric oxide, barium carbonate, antimony trioxide, a variety of metal hydroxides, a variety of heavy metallic salts and synthetic cryolite etc;

2.Organics: atrazine (agricultural insecticide), lauric acid, benzoic acid, benzoic acids, sterilization pill, sodium oxalate and cellulose acetate etc;

3.Ceramics: kaolin, silicone trioxide and clay etc;

4.Dyes: anthraquinone, black iron oxide, indigo dye, butyrate, titanium hydroxide, zinc sulfide and a variety of azo dye intermediates.

5.Food: soybean protein, gelatinized starch, grain stillage, triticin and wheat starch etc.

二、特点   Characteristics

1. 多种加料装置供选择，加料连续稳定，加料过程不会产生架桥现象。

2.   干燥机底部可设置特殊的冷却装置，避免了物料在底部高温区产生变质现象。设有特殊的气压密封装置和轴承冷却装置，有效延长传动部分的使用寿命。

3.   特殊的旋流分风装置，有效强化干燥与热交换能力。

4.   干燥室装有分级环或旋流片，物料细度和终水份可因此而调节。

5.   相对其它干燥方法而言，可有效增加物料细度。

6.   干燥室内切向气速高，物料停留时间短，有效防止物料粘壁及热敏性物料变质现象，达到高效、快速、瞬间脱水、不间断生产。

1. There are kinds of feeding devices to be chosen. The feeding process is continuous and stable, without bridging.

2. Special cooling equipment can be set at the bottom of drier to avoid the material deteriorating at the bottom high temperature zone. The special air pressure seal equipment and bearing cooling equipment are provided to efficiently prolong the service life of drive part.

3. The special cyclone separating equipment is adopted to efficiently intensify the drying and heat exchange capability.

4. The drying chamber is provided with graded ring or spinning disk, so the fineness and final water content of the material are adjustable.

5. Compared with other drying methods, this drier can efficiently improve the fineness of material.

6. The tangential air velocity in the drying chamber is high and the material stays there for a short time, which efficiently prevents the material from sticking on the walls and prevents heat sensitive material from deteriorating and achieves efficient, fast and instant dehydration and uninterrupted production.

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)