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Desiccant Usage

Condensation Prevention

When cold surfaces are surrounded by moist air, water vapor will condense on the surface if the dew point of the surface is lower than the dew point of the surrounding air.

This phenomenon know as “sweating” often leads to corrosion such as in water treatment plants or during surface preparation and coating of storage tanks in the chemical industry.

Without moisture control, moisture condenses on ice rink surfaces and softens the ice. Injection molding machines often use chilled water to remove the heat from the plastic during forming.Condensation can form on the molds causing disruption in the molding process.

Desiccant dehumidifiers are used to blanket the surface with dry air resulting in condensation prevention and economic benefits to the end user.

Condensation Prevention in the Meat Industry
Unwanted moisture is a problem in nearly all meat processing plants throughout the world. Dangerous conditions, such as fogging, are the results of unwanted moisture forming on equipment, floors, ceiling, and walls. Condensation happens in meat and poultry processing plants when warm humid air comes in contact with cooler surfaces such as those found in cut rooms, chiller rooms and packaging rooms.

Increased scrutiny by the USDA has resulted in companies actively searching for cost-effective solutions for fogging, icing, dripping, and other moisture related problems in order to comply with the USDA zero tolerance guidelines, and avoid the dreaded non-compliance report.

Condensation is the problem, and desiccant dehumidification is the solution. Desiccant dehumidifiers precisely control the humidity and dew point in the plant so that condensation cannot occur. Contact our local representative in your area to assist you with your facility needs.

Corrosion Prevention

Corrosion can be defined as a change from one form to another through chemical reaction, often times, the presence of moisture in the air accelerates the reaction.

Most people are familiar with the term “rust” which is nothing more than ferrous metals corroding in the presence of water vapor. Crystals such as sodium iodide and lithium fluoride can also corrode due to the water in the air.

Desiccant dehumidification has been used effectively in electronics manufacturing, the storage of idle equipment such as in the military and industrial plants as well as in chemical plant pipe galleries just to name a few.

Moisture Regain Prevention

Hydroscopic materials have an affinity for water and are sensitive to high relative humidity. Moisture regain by some of these materials causes them to become sticky and to not flow freely causing catastrophic problems in candy making, materials conveying, pharmaceutical and vitamin tablet making and packaging.

In other cases, when moisture is introduced into the process product quality suffers such as in pharmaceutical and semiconductor clean rooms, laminated glass manufacturing and precision color printing.

Desiccant dehumidifiers are used to control the moisture content of the air in the manufacturing process thus ensuring reliable operation and product quality.

In many cases, the right equipment can facilitate the a large up scaling of the production process, resulting in higher manufacturing yields from production processes that are highly sensitive to humidity exposure, such as lithium batteries.

Both desiccant dehumidifiers and mechanical refrigeration systems can remove moisture from the air.

Mold, Mildew and Fungus Prevention

We are surrounded by mold and fungus. Without moisture they can lay dormant for years and remain harmless, but when moisture is added, fungi begin to grow.

Fungi feed on any carbon based material and when they become airborne, they are often harmful to humans. As they feed, fungi can destroy priceless art or historical objects as well as grains that are used in breweries, seeds in storage or food products being shipped via ocean freight.

Desiccant dehumidifiers are used to control the moisture content of the air which surrounds the material or object to be protected causing the micro-organisms to remain dormant.

Product Drying

In many industries, such as gelatin capsules, candy making, investment casting and sausage making, drying product at elevated temperatures causes catastrophic quality problems. The product will melt or the ingredients will deteriorate.

Desiccant dehumidifiers are used to remove moisture at lower temperatures resulting in quality products and efficient operation.

Hard candies often contain corn sugars and sorbitol, both of which are highly hygroscopic. When humidity is high, the product can absorb moisture and become sticky, which can cause it to stick to the packaging machinery and wrapping material, slowing the process and creating sanitary problems. Learn more about how Desiccant can be used in candy processing applications.

Plastic Resin Drying

In plastics manufacturing, material must be free of moisture before it is processed to ensure that the end product is defect free. Many of today’s plastic resins are hygroscopic.

If the moisture is not properly removed it will boil off when heated during the molding or extrusion process. This released vapor can cause both structural and cosmetic flaws in the finished product.

Desiccant offers large volume desiccant rotor-based dehumidifiers, loaders, and stainless steel hoppers for the purpose of drying plastic resins to ensure quality products and efficient operation.

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