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Clean your compressed air of unwanted substances

Unwanted substances in your compressed air can impair production results and increase costs. How can you clear your air of water, oil and dust?

5 สิงหาคม 2024

Estimated reading time: 2 minutes

Compressed air contamination doesn’t simply disappear during the air compression process – even if you’re using an

Compressed air contamination doesn’t simply disappear during the air compression process – even if you’re using an oil-free air compressor!

Atmospheric air is naturally contaminated; in addition, there are a variety of contaminants that are typically found within a compressed air system itself. These include water vapor, oil vapor, liquid oil, liquid water, pipe scale/rust, water aerosols, oil aerosols, microorganisms, and atmospheric dirt. The presence of these contaminants means that air purification equipment (also known as air treatment products or compressed air ancillary products) is required to reduce, or wholly remove, the contamination from the compressed air.

How can you clear your air of water, oil and dust?

The introduction of unwanted substances, such as water, oil and dust, into your compressed air system can impair production results and even increase costs. Not to mention, your end uses will be affected by the lower quality of air. Luckily, there are several air treatment options available for clearing your compressed air of unwanted substances.

Depending on your end-use, some (or all) of these items might be necessary for your compressed air installation.

To control contamination and condensate, you should treat your compressed air by following three basic steps:

  1. Dry,
  2. Filter,
  3. Separate.

The air treatment products associated with the above steps are:

After-cooler

after-cooler

Compressed air is very hot after it’s compressed. An after-cooler is used to lower this temperature, which in turn reduces the water content.

Compressed air is very hot after it’s compressed. An after-cooler is used to lower this temperature, which in turn reduces the water content.

Compressed air is very hot after it’s compressed. An after-cooler is used to lower this temperature, which in turn reduces the water content.

Compressed air is very hot after it’s compressed. An after-cooler is used to lower this temperature, which in turn reduces the water content.
After-coolers are frequently included as standard equipment for compressor installations and should be placed directly after the compressor.

The heat exchanger cools the hot air and then routes most of the condensation water away from the system as quickly as possible.

Drains

Electronic water drain - EWD

Available in different types such as automatic, manual, and no-air-loss, a water separator allows the condensate that is collected from the system to automatically drain away - thus preventing collected condensate from re-entering the compressed air system. 

With proper sizing and selection, 

Available in different types such as automatic, manual, and no-air-loss, a water separator allows the condensate that is collected from the system to automatically drain away - thus preventing collected condensate from re-entering the compressed air system. 

With proper sizing and selection, 

Available in different types such as automatic, manual, and no-air-loss, a water separator allows the condensate that is collected from the system to automatically drain away - thus preventing collected condensate from re-entering the compressed air system. 

With proper sizing and selection, 

Available in different types such as automatic, manual, and no-air-loss, a water separator allows the condensate that is collected from the system to automatically drain away - thus preventing collected condensate from re-entering the compressed air system. 

With proper sizing and selection, a water separator can achieve an 80-90 percent efficiency in separating condensation water from the compressed air. The remaining water flows with the compressed air as water vapor into the air receiver.

Filters

A correctly installed coalescing filter, together with a suitable pre-filter, can reduce the quantity of oil in compressed air to approximately 0.01 mg/m3. With an activated carbon filter, the quantity of oil can be reduced to 0.003 mg/m3.

QDT95 coalescing filter

Dryers

FD VSD 300 refrigerated air dryer

Many systems require a much higher degree of air drying than filters and water separators can provide. In that case, a dryer is used to reduce the moisture levels below the point where condensation can occur later in the system.
For most systems, this would mean

Many systems require a much higher degree of air drying than filters and water separators can provide. In that case, a dryer is used to reduce the moisture levels below the point where condensation can occur later in the system.
For most systems, this would mean a refrigerated dryer that removes the water by cooling the air to a temperature near freezing. When even dryer air is needed,

Many systems require a much higher degree of air drying than filters and water separators can provide. In that case, a dryer is used to reduce the moisture levels below the point where condensation can occur later in the system.
For most systems, this would mean a refrigerated dryer that removes the water by cooling the air to a temperature near freezing. When even dryer air is needed, a desiccant type dryer is required.
This type of dryer reduces the water content by adsorbing the water onto specially designed media.

Oil/water separator

OSC 355 oil-water separator

Oil/water separators are an easy and cost-effective solution for meeting new and more stringent laws with regards to handling environmentally hazardous oil waste in your condensate.
Absorption media traps oil to produce clean drainage water.

Understanding the quality of compressed air needed is the first step in determining an air filtration solution suited for your applications. Have you used filters, after-coolers or water separators in your system? Leave us a comment below and tell us how they’ve impacted your compressed air system.

Why is compressed air treatment important?

While each 

While each 

While each 

While each compressed air installation is unique, one thing remains consistent across all systems: the necessity of properly treating compressed air. By allowing moisture, dirt, and particle matter to stay in the system, you are risking a decrease in system efficiency, as well as increased downtime for extended repairs and maintenance of the equipment the air powers.

However, by ensuring that your compressor installation utilizes the correct air treatment products, you can simultaneously reduce the maintenance and energy costs of your application. And as an added bonus, you’ll have the peace of mind that you are setting up your compressor system for a longer, productive lifespan.

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คุณมีคำถามเฉพาะ หรือต้องการสอบถามว่าตัวกรองใดที่จะเป็นโซลูชันที่เหมาะสมกับธุรกิจของคุณหรือไม่ คลิกปุ่มด้านล่างเพื่อติดต่อผู้เชี่ยวชาญได้เลย

ไดรเออร์ (Air dryer) อาฟเตอร์คูลเลอร์ อุปกรณ์แยกน้ำมันออกจากน้ำ ตัวกรอง เครื่องแยกน้ำมันออกจากน้ำ ไดรเออร์สารทำความเย็น (Refrigerant dryers) ไดรเออร์ดูดความชื้น

Clean your compressed air of unwanted substances

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