影响沸腾干燥机干燥效果的四个因素及设备特点

沸腾干燥机在密闭负压操作，用PLC控制系统控制，温度可自动调控，工作温度始终保持在50~120℃之间。物料沸腾状况好、吸收热量均匀、烘干速度快、物料干燥质量好等优点，沸腾干燥机广泛吸收、消化国外技术，结合国情研发成功的新机型。结构合理，性能稳定，操作方便，整机无死角，无外露螺钉。

The boiling dryer is operated under closed negative pressure and controlled by PLC control system. The temperature can be adjusted automatically and the working temperature is always kept between 50 ℃ and 120 ℃. It has the advantages of good boiling condition, uniform absorption of heat, fast drying speed and good drying quality. It is a new type of fluidized bed dryer which has been successfully developed by absorbing and digesting foreign technology and combining with national conditions. Reasonable structure, stable performance, easy operation, no dead angle, no exposed screw.

沸腾干燥机由主机、空气处理系统、加热系统、控制系统等组成。工作时，物料加入干燥机的料斗，按工艺要求设定程序和参数，整机开始工作。空气经过空气处理系统过滤、经加热系统加热后进入主机，物料经热空气流化，水份迅速蒸发，物料被快速干燥。按设定的程序与参数完成操作后，将料仓推出与提升转料机扣合提升出料，有效地控制粉尘与交叉污染。设备处于密闭负压下工作，且整个设备内表面光洁，无死角，易于清洗，符合“GMP”要求。

   boiling dryer is composed of main machine, air handling system, heating system and control system. When working, the material is added into the hopper of the dryer, the program and parameters are set according to the process requirements, and the whole machine starts to work. The air is filtered by the air treatment system and heated by the heating system before entering the main engine. The material is fluidized by hot air, and the water evaporates rapidly, and the material is dried rapidly. After the operation is completed according to the set procedures and parameters, the silo is pushed out and connected with the lifting transfer machine to lift the discharge material, so as to effectively control the dust and cross pollution. The equipment works under closed negative pressure, and the inner surface of the whole equipment is smooth and clean without dead angle, which is easy to clean and meets the requirements of GMP.

沸腾干燥机能直接将液态物料干燥、具有快速干燥颗粒、粉状物料等多种功能。装物料的料斗是锥形，可增加物料的流速，便于流化，物料在料斗内不易形成死角，物料吸受热量均匀，烘干速度快。装物料的料斗内备有取样装置，可随时取样，以测试物料的干燥的干燥终点，保证产品质量。

    boiling dryer can directly dry liquid materials, and has many functions such as fast drying particles, powder materials and so on. The hopper for loading materials is conical, which can increase the flow rate of materials and facilitate fluidization. The materials are not easy to form a dead angle in the hopper. The materials absorb heat evenly and dry fast. A sampling device is equipped in the hopper for loading materials, which can sample at any time to test the drying end point of materials and ensure the quality of products.

沸腾干燥机有冷风后处理工艺，干燥后的物料可及时通冷风冷切。可防止物料因余热过度而变质，确保了物料烘干质量。采用特殊材料进行空气热过滤，以防散热器的异物及空气中的杂质进入物料，确保物料的干净纯洁。沸腾干燥机设计了特殊的气体分布板，使载热气流横向呈螺旋状进入，使沸腾起的物料流分接触载热气流，吸受热量均匀，物料干燥快。减少了蒸汽消耗，节约了能源。

   boiling dryer has cold air post-treatment process, and the dried materials can be cut by cold air in time. It can prevent materials from deteriorating due to excessive waste heat and ensure the drying quality of materials. Special materials are used for air thermal filtration to prevent foreign matters in the radiator and impurities in the air from entering the materials and ensure the cleanliness of the materials. A special gas distribution plate is designed in the boiling dryer to make the heat carrying gas flow enter into the dryer in a transverse spiral shape, so that the boiling material flow contacts the heat carrying gas flow separately, and the heat absorption is uniform, and the material drying is fast. The steam consumption is reduced and the energy is saved.

一般来说，影响干燥效果的四个因素，即干燥温度，露点，时间和气流。

   generally speaking, there are four factors affecting the drying effect, namely drying temperature, dew point, time and air flow.

所谓的露点是从沸腾的干燥器中除去湿空气，使其含有低的残留水分。然后，通过加热空气以减少其相对湿度。此时，干燥空气压力会降低。通过加热，可以使内部的水分离开与空气扩散周围的颗粒的结合力。露点读数可以帮助用户找到一些问题，所以要提高干燥空气的露点，可以监测露点的值。

   the so-called dew point is to remove the wet air from the boiling dryer so that it contains low residual moisture. The air is then heated to reduce its relative humidity. At this point, the dry air pressure will decrease. By heating, the internal moisture can leave the binding force with the particles around the air diffusion. Dew point reading can help users find some problems, so to improve the dew point of dry air, you can monitor the dew point value.

沸腾干燥机的干燥温度也是一个重要因素。热量是打开聚合物之间的水分和水分的关键。当高于一定温度时，水分子和聚合物链会大大降低重力，水蒸气会被干燥的空气吹走。因此，干燥温度对终干燥效果的影响也有重要的影响。

The drying temperature of     boiling dryer is also an important factor. Heat is the key to opening the water and moisture between polymers. Above a certain temperature, water molecules and polymer chains will greatly reduce the gravity, and water vapor will be blown away by dry air. Therefore, the drying temperature also has an important influence on the final drying effect.

干燥时间不能忽视。相关供应商应规定材料在适当的温度和露点下干燥所需的时间。由于吸收热量和水分子扩散到颗粒表面，在颗粒周围的空气中需要一些时间，干燥时间会在一定程度上影响材料的影响。

   drying time can not be ignored. The relevant supplier shall specify the time required for the material to dry at the appropriate temperature and dew point. Due to the absorption of heat and the diffusion of water molecules to the particle surface, it takes some time in the air around the particle, and the drying time will affect the material to a certain extent.

材料在干燥过程中，热空气将热量传递到干燥仓中的颗粒，从颗粒表面除去水分，并将水分送回烘干机。这一次，必须有足够的空气将树脂加热到干燥温度并保持一段时间的温度。

   during the drying process, the hot air transfers the heat to the particles in the drying bin, removes the moisture from the particle surface, and sends the moisture back to the dryer. This time, there must be enough air to heat the resin to the drying temperature and maintain the temperature for a period of time.