|Fluid bed dryer, basically fluidized bed works based on the basis of the drying process is boiling powder. Drying particularly applicable to certain sensitive materials (e.g., grinding line, polyacrylamide, etc.); Meanwhile, in the exhaust under the action container subtle to avoid any local overheating, due to the uniform temperature distribution in the fluidized bed, powder by the trap bag filter rear to the outside, its trapping process there are a large number of ultrafine powders generated, whether it is in the stream boiling or in the trapping of the running, boiling the whole process of drying are accompanied ultrafine powder movement.
The boiling dryer good heat transfer effect, the bed temperature is relatively uniform, with a high coefficient of thermal capacity (or volumetric heat transfer coefficient), the production capacity of the material in the process of boiling drier boiling dry due to the dry gas and the surface of the material particles generated intense friction between the dry solid particles also have a violent collision with friction, solid particles violent collision and friction with the cylinder wall, trapping bag and pipe wall, making the surface of the solid particles with a large number of Electrostatic; other hand, with the constant refinement of the solid particles, generated a lot of new surface, the original surface of the particles charge balance state is broken, the the newborn particle surface to bring large charge. Due to aggregation, adhesion wall and other reasons, once the poor machine grounded state, allows the accumulation of electrostatic charge forming a fairly high voltages, which under certain conditions can cause electrostatic discharge sparks. If dry material is flammable and explosive material, such a static spark can easily cause the sudden dry material fire or explosion.
The boiling dryer advantages epitomizes in the following points:
· In the same equipment can be a continuous operation, intermittent operation may be performed;
· The material in boiling the residence time in the dryer can be adjusted according to the needs of the product moisture content is stable;
· Boiling dryer independent electrical cabinet and PLC control of human-computer interaction, integration all drying parameters set, safe and convenient to operate;
· Drying device mechanical transmission parts boiling dryer investment cost, less maintenance workload.
· Boiling Drier no dead ends, lighter, faster loading and unloading, rinse, meet the GMP standard.