Q Q: 506615608
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.
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.
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.
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.
generally speaking, there are four factors affecting the drying effect, namely drying temperature, dew point, time and air flow.
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.
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.
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.
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.