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Antibiotics production, for example, often involves spray drying processes. Many ingredients in industrial processes also must be spray dried. Ceramic materials, paint pigments, detergents, catalysts, salts and a wide variety of other materials can be prepared by spray dryers. Read More…

Spray Dryers Food processing operations like milk drying make extensive use of spray drying procedures. Cereals, many kinds of coffee, teas, spices, egg-based foods and flavorings are often subject to spray heating processes in advance of packaging and consumption. Spray drying is also used in the development of a wide variety of healthcare and pharmaceuticals-related products.
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Leading Manufacturers

Louisville, KY  |  502-969-3171

Carrier is a manufacturer of high quality dryers in addition to many other related products, including coolers, screens, air knife separators, spiral elevators, feeders & conveyors.

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Carrier Vibrating Equipment, Inc. $$$

De Pere, WI  |  920-336-5715

Dürr Megtec provides customized systems for: regulatory compliance; improvement in working environment and in neighbor relations by reducing odor from industrial processes and helping to reduce greenhouse gas emissions and process energy management.

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Dürr Systems, Inc. $$$

East Windsor, CT  |  860-627-5110

Dri-Air Industries' expertise is in plastic drying technology. The plastic drying systems we offer problem solve for drying plastic resins, mixing and blending. Our product line includes industrial dryers, desiccant air dryers and hot air dryers. Newly offered is our micro dryer for micro molding machines.

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DRI-AIR Industries, Inc. $$$

Xenia, OH  |  937-376-2927

W.A. Hammond DRIERITE Company manufactures DRIERITE desiccants in many sizes and consistencies and related materials and equipment. Our product line includes gas dryers, compressed air dryers, drying tubes, storage tank vent dryers and truck dryers. Our desiccants prevent mildew, rust and corrosion.

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W.A. Hammond Drierite Co. Ltd. $$$

De Pere, WI  |  920-336-9800

The CMM Group provides custom-designed industrial dryers and ovens for a wide range of applications in single or multi-zone configurations. The CMM Group designs and builds conveyorized curing, baking and drying ovens for automated production of small-to-medium sized products. Conveyorized roll support web dryers are available in horizontal or vertical tower design and can handle thin film to heavy gauge substrates, narrow to wide, slow or fast speeds.

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The CMM Group $$$

Broomfield, CO  |  800-521-5351

Altec AIR is a leading manufacturer and worldwide distributor of industrial compressed air dryers, laboratory gas generators, purifiers, complete systems and accessories. Altec AIR manufactures a full line of regenerative, desiccant compressed air dryers and absorbers to 50scfm.

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Altec AIR $$$
placeholder image Carrier Vibrating Equipment, Inc. Dürr Systems, Inc. DRI-AIR Industries, Inc. W.A. Hammond Drierite Co. Ltd. The CMM Group Altec AIR

Depending on the material being dried, spray dryers can use heated air or heated inert gasses; when combustible materials must be dried, gasses like nitrogen are used to minimize reaction risks.

Spray dryers are industrial drying systems that combine the processes of atomization and heating to dry a material. Atomization is the process by which a material is dispersed into extremely fine droplets. In spray drying, a material that is intended to be dried is mixed with a liquid and forced at high speeds into a chamber by a nozzle. Heat is then forced into the chamber, causing the liquid to evaporate and leaving behind fine solid particles.

The spray drying process begins with collections of materials to be dried and a solvent (which is often water). When the solute and solvent are mixed, the sludge or slurry created by this mixing are spun centrifugally and then forced through an atomizing nozzle at high speeds. While suspended in the drying chamber into which the material has been injected, it is exposed to a heated gas.

The solvent falls to the bottom of the chambers as the liquid solvent vaporizes. The dried materials are collected and prepared for the next phase of processing. The evaporation rate and the necessary size distribution of a product determine how much air is needed, which then affects the size and cost of most system components. As a result, these are the most important factors when designing a spray dryer.

Spray drying is often used when the product must meet exact requirements in terms of particle size distribution, particle shape, bulk density, and residual moisture content. Advantages of spray drying over other industrial drying processes include particle size control, enhancing flow properties of dry solids, evaporative cooling, corrosion reduction and short residence.

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