A wide variety of products can be spray dried with the only restriction that the product must be liquid, pumpable and free of particles larger than 100-500 my. There are many different possibilities to make your product suitable for a spray dryer, this can be crushing, filtering, cooking or hydrolysis.
Application
Spray drying is a process that uses hot gas to rapidly dry liquids or slurries to prepare dry powders. This is ideal for drying many heat-sensitive materials such as food and pharmaceuticals.
Consistent particle size distribution is what is responsible for spray drying some industrial products such as catalysts. Air is a heated drying medium; however, nitrogen can be used if the liquid is a flammable solvent (such as ethanol) or if the product is oxygen sensitive.
In most cases, the air is blown in the same direction as the sprayed liquid (co-flow) and a fine powder is produced. Various techniques are used in the spray drying process: pressure nozzle atomization, two-fluid nozzle atomization and centrifugal atomization.
The performance of a spray dryer is largely determined by the spray drying nozzle. Partnering with a company with spray drying technology expertise, a proven track record and a broad product range ensures that your nozzles deliver the exact performance your product requires.
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