Line for drying solutions is an automated closed system for evaporation of the solvent (removal of water by evaporation) for separating the substance, increase its concentration in the solvent or complete removal of the solvent (water). The line is designed for use in the chemical and pharmaceutical industries. Climatic performance corresponds to macro-regions with a temperate climate with an ambient temperature from - 5 to + 35 ° C with a relative humidity of 80-100%, atmospheric pressure 84 to 107 kPa.

Line for drying solutions (glycerol) includes:

1) Heating system: heat exchangers.
2) Filtration system: primary filter and a final type of BFH (primary filter is not included in the line)
3) The vacuum spray dryers Normit SD-5000 with heat exchanger - condenser.
4) Condensate collector with level sensor, vacuum pump.
5) Carbon filters
6) Transportation systems/product discharge: centrifugal pump
7) Control Panel.

Technical parameters

The line is connected directly to the tank-container where the solution (glycerin) is pumped through the primary filter in the heat exchanger. The heat exchanger consists of a body with a casing (inner), with 14 heating element inside. The product, passing through the heat exchanger is heated to a temperature of 200 ° C and is pumped by a pump in the vacuum spray dryer, where drying process occurs. Vacuum spray dryer consists of a tank volume of 5,000 liters with the inner casing, the nozzle located in the upper part of the installation, window with lighting, air ducts, heat exchanger-condenser. The vacuum dryer is connected to a condensate collection tank and a vacuum pump.

For spraying the solution, it must be connected to a compressor for tightening of the air. The product is heated to a temperature of 200 °C in a pipe and mixed with air and fed into the upper part of the dryer where it is sprayed through a nozzle. The evaporation process occurs. Separating the solvent (water) from the compound - water molecules pass into the vapor state. Using a vacuum pump steam is drawn through the air heat exchanger to the condesate collector. After reaching the required level of evaporation, the product is discharged by a pump from the drying unit for further filtering. If the product temperature is below 70 ° C, it may be connected to a heat exchanger line after discharging from the vacuum spray dryer prior to filtration.

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