Changzhou Kai work an important part of the efficient boiling dryer - air distribution plate Time:2015-08-24
Changzhou City, Kay Engineering Drying Equipment Co., efficient boiling dryer material tabulate holes to form a high-speed air flow, and let the material into boiling in the gas-solid two large-area contact process, the rapid evaporation of water in the material, which to dry, the air distribution plate is an important part of high-boiling machine. Efficient boiling dryer air distribution plate has two roles, supporting material layer, the second is the gas evenly distributed. Distribution plate hole size, shape, distribution trend, opening rate and so plays a crucial impact on the distribution of the fluid. Uneven distribution of gas, and causes the bed to appear in the circulation, its "channeling" tends to be extremely easy to make certain parts of the bed, while the remaining portion is dead bed, when most of the gas along
Some channels in the bed short-circuit in the form of "channeling" to leave through the bed, the gas-solid contact much worse, it should strive to avoid. Good distribution plate design should be able to suppress uneven bed, i.e. when the bed is in some parts due to the reduced pressure drop, when the airflow speed is increased, the resistance generated by the distribution plate should be able to inhibit the increase in airflow, thereby inhibiting The fluidized deterioration.
Most of the boiling dryer air distribution plate form a single, multi-vertical perforated plate or seat-shaped stencil material flow process is prone to flow imbalance or dead ends can not ensure that the particles drugs evenness, while the form of a single hole also can not meet the type of drug production process requirements. On the other hand, in order to reduce drug leakage loss of material, commonly used in multi-layer network structure, the air distribution plate and the fluidized bed is the use of a large number of bolted without disassembly, easy to clean clean residue caused by cross-contamination and other issues. Recommendations: the use of computational fluid dynamics model, heat and mass transfer model, the design of the air distribution plate on the pitch, aperture opening rate of aerodynamics, thermodynamics simulation and verification, in order to meet the production of different materials process requirements. On the installation, connection made removable in order to ensure quick and thorough cleaning.
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