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  • Safe Spray Drying Processes

    SPX’s Anhydro brand spray dryers can be used for a wide range of applications, and more than 3,500 have been installed worldwide.

SPX Reviews Safety and Environmental Protection Issues for Spray Drying Plants

In a recently published editorial, SPX reviews several areas of safety and environmental regulations that apply to the construction and operation of spray drying plants. Based on many years of experience working with companies around the world, SPX offers an overview of the need to assess risks and design spray drying processes to ensure safety requirements are met to protect employees, equipment and the environment.

Spray drying is a highly cost-effective method of obtaining powders from liquids while retaining valuable nutrients, aromas and flavors in heat-sensitive products. It is a continuous process that can convert most liquids into a free-flowing powder. Examples of products made through this process include food additives, milk powders, plant extracts, pharmaceuticals and various chemicals.

Risks associated with spray drying include organic powder dust explosions, solvent vapor explosions and exposure to hazardous or toxic products. For example, an organic powder may explode if there is an ignition source (oxygen and a spark) within the plant.

SPX’s editorial presents several designs for spray drying plants that can be used to reduce these risks. Among these designs is one for producing synthetic flavors. The design includes a suppression system that has quick responding detectors and suppression bottles for inert powder injection. The system is designed to suppress an explosion before it can develop. Plants producing organic powders also typically have automatically controlled fire extinguishing nozzles for additional protection.

Click here to review SPX’s editorial about safety and environmental protection for modern spray drying plants.