Which drying equipment equipment do you need?
Traditional bulk dryers, like belt-, drum- or bed dryers are versatile s…
Traditional feed dryers, like belt-, drum- or bed dryers are versatile solut…
The drying process demands specific environmental condition…
Pharmaceutical laboratories need compact equipment to handle and produce small …
Pharmaceutical industries employ several processe…
Traditional dryers and heat transfer systems, like belt-, drum- or bed dryers ar…
Organic volatile compounds from fruits, vegetables and herbs a…
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Large-volume vegetable and field crop seeds manufacturers may prefer a fully automated coating and dr…
Seeds that are harvested are dried as part of their initial process of cleaning. Having huge quantities …
Fluid bed drying is a pharmaceutical process carried out to reduce th…
After crushing and drying mined bentonite, this clay mineral is usually processed through a …
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Use indirect drying systems for gentle heating
Industrial drying machines apply either direct or indirect heating. The former category transfers the temperature to the materials and includes processing equipment like drying cabinets or fluid bed dryers.
Indirect drying solutions heat a fluid that, in turn, heats the drying chamber. This technology is often engineered for batch processing and is designed to avoid atmospheric exposure. Infrared and microwave solutions are both indirect drying systems.
Industrial drying machines by convection are ideal for slurries and insoluble substances
Convection drying is essential for products that need to maintain texture, like milk powder or fruit powders. One of the primary methods for achieving convection is spray drying. The technique atomizes liquids into droplets and subjects them to evaporation, turning them into powdered solids.
Spray drying combines short residence with continuous processing, making it suitable for slurries, emulsions, and fluids.
Evaporate moisture from wet granules with fluidized bed dryers
Drying wet powders such as feed ingredients or ceramics present a unique challenge. The individual particles are coated by humidity, resulting in high moisture levels. But the materials cannot withstand aggressive heating methods.
Fluid bed dryers engineer a solution by blowing hot air through a perforated plate underneath the material. When the wet solids make contact with the airflow, the liquids are vaporized, leaving the particles in a dry state.
Dehumidification systems apply low temperatures to heat sensitive materials
Industrial dehumidifiers reduce the relative humidity in the stainless steel drum, gradually drying the materials inside. Solutions use a compressor or desiccant to lead humid air out of the chamber.
The low-temperature drying system is ideal for sensitive materials with a low tolerance for environmental changes like chemical powders. Dehumidifiers do not entirely eliminate the moisture from the drying objects, making them a safer choice for wet granulates for applications such as pharmaceutical tablets and seed pelleting.
Sorption dehumidifiers strip ambiance air of excess water molecules
Another type of industrial dehumidifier within the processing industry extracts environmental moisture at the production site. Humidity control is particularly important where powders are handled as moisture negatively affects the flowability of materials. But excess humidity can also impact the properties of sensitive materials like flower extracts or dough-based products or soft-gel capsules.
Sorption dehumidifiers lead the ambiance air through a rotor coated with a desiccant, for example silica gel. The coating adsorbs the water molecules, allowing the dry air to circulate back into the environment.
Skip the liquefaction of ice crystals with lyophilization techniques
Some materials, such as ingredients for biopharmaceuticals or primary bakery products, are delivered frozen. But treating them with heat risks altering their properties as ice crystals melt into liquid.
Freeze-dryers bypass that phase to keep the materials intact and dry. This technology is based on the sublimation principle, where a solid turns directly into vapor without first turning into a liquid. Lyophilization occurs when the material is placed under a deep vacuum and subjected to heat energy, transforming the ice into gas.
Free up trapped moisture with vacuum-chamber Industrial drying machines
Hygroscopic substances like glycerin or methanol used for biofuel products are difficult to dry with heat transfer. The molecules trap water that is difficult to release without compromising the material.
Vacuum drying equipment forces moisture out by dropping the pressure below the atmospheric pressure within the chamber. The outward flow of air leaving the system causes the water content to vaporize and escape the material.
Drying cabinets are best suited for batch processing
Industrial dryers using conductive heat such as drying cabinets are better suited to batch processing. Industrial drying cabinets apply low-temperature heating for more extended periods.
Typically, this drying method is used not only to remove moisture from materials but to alter their compounds, too. So the technique is ideal for drying fresh produce like herbs or meats to make dried oregano or biltong.
Radiation drying systems exploit long wavelengths to create an indirect heating
Radiation drying systems apply long wavelengths in the electromagnetic spectrum to heat and dehumidify material indirectly. In contrast, infrared heaters radiate absorbed water molecules to create a low-energy drying environment. The technique is optimal if you manufacture materials that require a short drying process, like water-based ink or active pharmaceutical ingredients. On the other hand, Microwave drying is an alternative radiation solution. The technology relies on the vibration of water molecules to generate energy, creating mild drying conditions for delicate products such as berries or flower extracts.
Reduce power consumption with energy-efficient industrial drying machines
One of the challenges of industrial drying equipment is power efficiency. The machine capacity and drying capability determine energy consumption, but other factors can improve effectiveness.
An electric heating element transfers a higher energy rate than burners or gas heaters. Efficiency is also impacted by the blower design. An open loop system uses a single blower for drying and air regeneration, causing losses in temperature. Closed loop drying equipment solves this inefficiency by adopting separate blowers for dry and moist air.