First, the design
 Process conditions
1, the name of the material: guanidine nitrate, guanidine hydrochloride
2, the beginning of water: 30% (wet basis)
3, the final moisture content: 0.2% (wet basis)
4, wet product quality: 1000 Kg / batch
5, dry product size: 40-60 mesh
6, the proportion of dry goods stacking: 1.6g / cm3
7, into the air temperature: 150 ℃
8, heating method: steam
9, horizontal boiling bed dryer
10, heat exchanger 304 built-in host bag, contact material 304

Horizontal boiling dryer in the air distribution plate has two roles, first, support material layer, the second is to make gas distribution. Distribution hole size, shape, distribution, opening rate and so on all play a crucial role in the distribution of fluids. Inhomogeneous gas distribution causes "circulation" in the bed, which tends to cause "ditch flow" in some parts of the bed at extreme extreme conditions, while the rest is the dead bed where most of the gas follows the bed Some of the channels in the form of "ditch" short-circuit through the bed to make the gas-solid contact greatly deteriorated, which should be avoided. Good distribution board design, should be able to inhibit the bed inhomogeneity, that is, when some parts of the bed due to pressure drop decreases, the air flow rate increases, the distribution plate resistance should be able to inhibit the air flow increases, thus inhibiting Fluidized deterioration.

At present, most of the boiling dryer used in the form of a single airflow distribution board, the use of more vertical perforated plate or sheet-shaped screen, the material in the fluidization process is prone to uneven flow or dead zone problems, can not ensure that particles Uniformity, while a single form of opening can not meet the requirements of different pharmaceutical production process. On the other hand, in order to reduce the material leakage loss, multi-layer mesh structure is widely used at present. Airflow distribution boards and ebullient beds are often bolted with large numbers of bolts, inconvenient for disassembly, and difficult to clean and generate residue to cause cross-contamination. Advice: Using the computer fluid dynamics model, the heat transfer and mass transfer model, the aerodynamic and thermodynamic simulation parameters such as the hole distance, the hole diameter and the hole opening rate were calculated and verified in the design of the airflow distribution plate to meet the requirements of different material production Process requirements. In the installation method, the connection made removable, to ensure quick and complete, complete and clean.

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  Guanidine hydrochloride, guanidine nitrate horizontal boiling dryer