Food Processing Industry

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Food Industry

Though you might not realise it, dry compressed air affects each and every manufacturing unit in food industry.

Use of Compressed Air Dryer in Food Industry

In food manufacturing units, generally following compressed air powered pneumatic machines are used:

Pneumatic control and actuators
Labeling machine
Packing machines
Pelleting machine
Weighing equipment
Conveying machine

Problems
A major problem in compressed air systems is the presence of water, dust particles, oil (oils particles are introduced by lubricated air compressors) and solid contaminants which can adversely affect air quality.

If the contaminated compressed air will be used through pneumatic tools and machines then there will be following problems:

Malfunctioning of pneumatic tools and machines
Sluggish and inconsistent operation of valves and cylinder
Corrosion in pipelines, cylinder and other components
Increase in downtime
Increase in maintenance cost of pneumatic machines/tools/controls
Freezing in exposed lines during cold weather

Moisture in compressed air also leads to problems like:

Containers requires reliable clean-out and evacuation to meet stringent quality standards.
Moisture and dust particles in air tight packs may spoil food.
Presence of moisture and dust particles during spraying leads to unhygienic food.
Presence of moisture and dust particles in baked food trays may spoil food.

The majority of food products are highly hygroscopic and tend to suffer physical, enzymatic, microbiological, and biochemical deterioration after coming in contact with moisture-laden compressed air.

Applications

Pneumatic machines

Spraying and coating

Conveying

Packing

Filling bottles

Solution

Remove water, dust particles, oil (lubricated air compressors introduce oil particles), and solid contaminants from compressed air.

The Delair Solution

Delair offers a wide range of refrigeration and absorption dryers that remove water/moisture from compressed air.

Delair Refrigeration Dryers

This dryer operates on the method of cooling the air to near freezing point to remove the moisture and reheating it to approximately 10°C below the incoming compressed air temperature at nominal conditions.

Delair Adsorption dryer

The dryer is based on the principle of heatless regeneration and the physical properties of the desiccant to adsorb and desorb water vapour. It uses the pressure swing principle/purge air to regenerate the desiccant bed.