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Moisture Control in Powder Food Powdered foods like juice concentrates, whey powder, protein supplements, soup powders, cocoa, gelatin, dehydrated soft drink concentrates, instant coffee powders and milk powders are gaining popularity in the growing world. The presence of moisture during processing of food powders and beverage powders causes: Stickiness, Lumping and caking, Cluster formation, Reduce shelf life Recommended RH for Powdered Foods Food Powder Temperature in ºC RH % Instant Coffee Processing 26ºC 20% RH Fruit Powder Handling 20°C – 22°C 35% RH Tomato Powder Production 19°C – 23°C 25% – 35% RH Dry Soup Packaging 21°C 20% RH Powdered Drink Mix Packaging 21°C 20% RH Cooling of Spray Dried Milk Powder 10°C 35%- 40% RH Milk Powder Packaging 22°C– 25°C 35% – 40% RH Whey Powder Manufacturing/Storage 21°C – 26°C 15% – 30% RH Hygro Tech Engineers has a complete turnkey solution in treating moisture problems for powdery products. for more details please contact www.hygrotechindia.com / 9886144100
Hygro Dehumidifiers are the best solution to maintain the low RH levels in the cold storages / seed storages. Hygro has supplied the hygro dehumidifier to M/s. GUBBA cold storage to maintain the low RH levels to preserve the seeds in the seed storage cold room.
Hygro Dehumidifiers are the best solution to maintain the low RH levels in the cold storages / seed storages. Hygro has supplied the hygro dehumidifier to M/s. GUBBA cold storage to maintain the low RH levels to preserve the seeds in the seed storage cold room.
Desiccant Dehumidifier for humidity control in chocolate storage rooms Installing a HYgro desiccant Dehumidifers can preserve the Chocolates by maintaining a conditions at 35±5% RH at 25°C (77°F) for it to retain its original flavour and aroma. For more details please visit www.hygrotechindia.com
I pharmaceutical Industries Vial Filling operations entail include conveying of powdered substances to packaging areas in a high velocity air-stream and filling minute quantities of the powder in the vials and capsules. High humidity may cause the powder to stick and cluster together in the conveyor thus hampering air conveying and filling operations. Hygro Tech Engineers has a complete solution to maintain the low RH levels in the desired areas in pharmaceutical industries For more details please visit www.hygrotechindia.com
Desiccant Dehumidifier for Moisture Control in Safety Glass manufacturing through Hygro Dehumidifiers. for more details please visit www.hygrotechindia.com Effects The hygroscopic film absorbs moisture and leads to Improper bonding of two layers of glass Reduces clarity of the glass Solution Install Desiccant Dehumidifier to control The RH level in the glass laminating area at 20-22% with 20°C (68°F).
moisture during PCB assembly can increase the number of failures during assembly, and decrease the circuit assemblies and its life. Exposure to high moisture during Printed Circuit Board (PCB) assembly and manufacturing, leads to Microscopic corrosion Adhesion failures Surface defects Decreased performance of the circuit board. Increase electrical resistance Decrease capacitance. Hygro Desiccant Dehumidifiers provide the ideal low humidity environment in the manufacturing, assembly and storage of these precision, high quality electronic Printed Circuit Boards since they are capable of maintaining RH as low as 1% or even lower at a constant level, regardless of ambient conditions. Ref: AT & S, Mysore
DESICCANT ROTOR The desiccant rotor is a high capacity desiccant media captivated in a circumference rim with radial spokes. The spokes attach to a central hub with integral sealed ball bearings. The sealed bearings ride on a solid center shaft. The rotor is held in place with a lock ring on each side the desiccant material, usually a silica gel impregnated into a support. This looks like a honeycomb, which is open on both ends. Air passes through the honeycomb passages, giving up moisture to the desiccant contained in the walls of the honeycomb cells. The desiccant structure is formed into the shape of a wheel. The wheel constantly rotates through two separate air streams. The first stream, called the process air. Is dries by the desiccant. The second air stream, called reactivation or regeneration air, is heated. It dries the desiccant. Technical Specifications Rotor material Desiccant: Solid silica gel Silica Gel Si02 - 82% Glass-fibre- 16% Acrylic surface coating - 2% Technical Data Density: 240kg/m3 Surface compression strength: >200kpa Water vapour absorption capacity :> 40% Max temp: 160Deg C PATENTED Desiccant Rotor Product NOT classified as harmful to the environment Properties No limitation of process air relative humidity. As long as no droplets are introduced in rotor during operation Dehumidification performance after continuous operation for: 5 years: approx. 90% 10 years: approx. 90% 15 years: approx. 90% Incombustible Washable in water or non alkaline detergent after saturation in humid air HYGRO DEHUMIDIFIER ADVANTAGES The Dehumidifier Manufactured by Hygro Tech is non cyclic, rotary type and removes the moisture by process of continues physical adsorption. The desiccant used by Hygro Tech is non toxic, non flammable with maximum moisture removal Capacity Hygro Dehumidifier can maintain Relative humidity (RH) as low as 1% regardless of ambient conditions.
Humidity Control for Pneumatic Powder Conveying Humidity / Moisture Control is a critical element for various forms of powders such as fine salt, detergents, flour, powdery foods, calcium phosphate, baking powder, wheat starch, plastics resin etc. Pneumatic conveying as a means of powder conveying system is widely used in many powder processing operations such as in handling transfer of food powders, flour in a mill, bakery or confectionery. Due to the stickiness nature of the hygroscopic powders, they get stuck into nozzles, conveying belts and mixing machines leading to increased maintenance time and bad hygiene. Stickiness – Powder gains properties of adhering or sticking to a surface and get stuck into conveying belts causing bad hygiene which ultimately leads to deteriorating of product quality. Cluster formation – Due to excess moisture similar particles of powder gather closely together forming buildups inside the mixing machine and causing blockages in free flow of powder. Lump formation – A large piece of powder sticks together without a definite shape causing obstruction in the nozzle passage and increasing the maintenance time. Caking – Moist environment forces powder to change into a solid mass which leads to increase in product wastage and slowing down of production process. Food powder processing In order to retain quality of powdery foods, they need to be dried at low temperatures. Applications Temperature (°C) Humidity (% RH) Instant Coffee Processing 26 25 Flour 24 10 Starch 24 20 Gelatin 24 10-30 Milk Powder Storage 21-36 15-30 Confectionary-Chocolate Covering 21-32 45 Coffee Packaging 18 40 Dry Spice Conveying <48 12-16 Gr/Lb Hygro Tech Engineers having a complete solution to treat the moisture problems with Hygro Dehumidifiers & drying chambers for all powder conveying, packing, storage
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