WHEN MOISTURE IS TORTURE !

In this column, we will share with you regularly our experience on major application areas where usage of dehumidification is both extensive and essential.

Dehumidification - An essential partner for
Spray Dryers / Fluid Bed Dryers

Spray Dryer

A spray dryer, is a device for drying, utilizing a spray. It mixes heated air with an atomized (sprayed) liquid stream within a vessel (drying chamber) to accomplish evaporation and produce a free-flowing dry powder with a controlled average particle size.

Fluid Bed Dryer

In a fluid bed dryer, air is passed through the product layer under controlled velocity conditions to create a fluidized state. Heat may also be used by heating surfaces immersed in the fluidized layer. These dryers are widely used in the:

Food & Dairy Industry

  • Beverages - Coffee, Tea and Cocoa.
  • Carbohydrates and Sugar.
  • Health foods and Herbal products.
  • Juice/ soft drink concentrates and Soup mixes.
  • Milk, Starch and Vitamins.
  • Ingredients and flavours.

Chemical Industry

  • Bulk and special/ fine chemicals.
  • Agrochemicals, Pesticides and Fertilizers.
  • Ceramics, Detergents, Dyestuff and Pigments.
  • Organic and inorganic Chemicals.

Pharmaceutical Industry

  • Analgesics, Antibiotics, Enzymes, Proteins and Vaccines.
  • Biotech Products, Tannins and Yeasts.
  • Powders for Inhalation.
  • Micro-Encapsulation, Sterile and Non-sterile Excipients

Dehumidification (Humidity Control) - A must

Spray / Fluid bed dryers require large quantities of hot air for drying. The quality of the final product is affected by the quality of air entering the dryer. It should be dry, free from contamination, foreign particles and odourless. With the growing emphasis on limiting production loses and downtime, which impacts final product quality and thus

profits, the importance of using dehumidifiers, in conjunction with Spray Dryer / Fluid Bed Dryer for quality drying, has become almost mandatory.
Since, the ambient is changing throughout 24 hrs, 365 days a year, the humidity present in the air, entering the spray/ fluid bed dryer is not constant.

Fluid Bed Dryer

In a fluid bed dryer, air is passed through the product layer under controlled velocity conditions to create a fluidized state. Heat may also be used by heating surfaces immersed in the fluidized layer. These dryers are widely used in the:

Food & Dairy Industry

  • Beverages - Coffee, Tea and Cocoa.
  • Carbohydrates and Sugar.
  • Health foods and Herbal products.
  • Juice/ soft drink concentrates and Soup mixes.
  • Milk, Starch and Vitamins.
  • Ingredients and flavours.

This requires close monitoring of the drying temperature and time inside the dryer, as varying level of humidity present in the air entering the dryers, results in different final moisture content in product being dried, thereby degrading the quality of the final product.

It also hinders the free flow of powders/ granules making many downstream operations (e.g. packaging, filtering, handling) difficult and expensive.

The Solution

The ideal solution is to install a Bry-Air Desiccant Dehumidifier

Chemical Industry

  • Bulk and special/ fine chemicals.
  • Agrochemicals, Pesticides and Fertilizers.
  • Ceramics, Detergents, Dyestuff and Pigments.
  • Organic and inorganic Chemicals.

Pharmaceutical Industry

  • Analgesics, Antibiotics, Enzymes, Proteins and Vaccines.
  • Biotech Products, Tannins and Yeasts.
  • Powders for Inhalation.
  • Micro-Encapsulation, Sterile and Non-sterile Excipients

Dehumidification (Humidity Control) - A must

Spray / Fluid bed dryers require large quantities of hot air for drying. The quality of the final product is affected by the quality of air entering the dryer. It should be dry, free from contamination, foreign particles and odourless. With the growing emphasis on limiting production loses and downtime, which impacts final product quality and thus

at the inlet (source of air) of the spray/ fluid bed dryer for a constant moisture content supply (dry) air inside the dryer. This helps in reducing the physical monitoring of the drying temperature and time thereby reducing costs and ensuring consistant quality year around.

The Bry-Air Desiccant Dehumidifier is also ideal for many temperature sensitive products, which cannot be spray dried easily at relatively high inlet temperatures. Use of dehumidifiers also reduces the drying time of the product inside the spray/ fluid bed dryer. Bry-Air Dehumidifiers have been installed by leading manufacturers like Hindustan Lever, Tata Tea Ltd., and Goodricke Group, for processing of coffee, instant tea and other powdery products.