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Air Dryers

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Water vapor from compressed air is eliminated using an air dryer. Numerous industrial and commercial establishments frequently contain compressed air dryers. Unfortunately, air compression collects pollutants from the atmosphere, such as water vapor and oils. Read More…

Air Dryers Air dryers are tools that use a stream of air to remove moisture from something. Drying is the process of moisture removal; it can be accomplished through heating, freezing, blowing, sucking and in all kinds of other ways.
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Leading Manufacturers

Louisville, KY  |  502-969-3171

Carrier is a manufacturer of high quality dryers in addition to many other related products, including coolers, screens, air knife separators, spiral elevators, feeders & conveyors.

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Carrier Vibrating Equipment, Inc. $$$

De Pere, WI  |  920-336-5715

Dürr is a leading global supplier of environmental solutions and engineered products tailored to meet customers' industrial process requirements. We offer a complete portfolio of air pollution control technologies and drying and curing systems, including industrial dryers and ovens for roll-to-roll processes, web forming processes and conveyor handling of webs, as well as specialized coating lines for lithium-ion battery electrode coating.

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Dürr Systems, Inc. $$$

Louisville, KY  |  877-316-6140

We are a company dedicated to quality design, supply, installation and repair and maintenance of industrial processing equipment. Our team has the knowledge and experience to get, and keep, your units running smoothly. Services include field services, inspections, and assessments. Kiln and dryer parts range from burners to gears to bearings. We are here to serve your present needs, as well as your future requirements.

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Industrial Kiln & Dryer Group $$$

E Longmeadow, MA  |  888-994-1014

For over 50 years, Excel Dryer has been manufacturing the finest American made hand dryers featuring the XLERATOR® Hand Dryer. Excel Dryer revolutionized the industry by inventing the patented XLERATOR® technology that created the high-speed, energy-efficient hand dryer category and set a new standard for performance, reliability and customer satisfaction. Excel Dryer’s expanded, enhanced product line — featuring XLERATOR, XLERATOReco® and ThinAir® hand dryers — come fully equipped with adjustable speed, sound and heat controls, multi-voltage options and an externally visible service LED. With the most options and accessories in the industry, including a HEPA filtration system and custom covers, you can design the best hand drying solution for any restroom environment. Excel Dryer prides itself on offering the ultimate customer service and making dependable products by employees committed to quality and dependability. For more information, visit exceldryer.com.

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Excel Dryer, Inc. $$$

De Pere, WI  |  920-336-9800

The CMM Group provides custom-designed industrial dryers and ovens for a wide range of applications in single or multi-zone configurations. The CMM Group designs and builds conveyorized curing, baking and drying ovens for automated production of small-to-medium sized products. Conveyorized roll support web dryers are available in horizontal or vertical tower design and can handle thin film to heavy gauge substrates, narrow to wide, slow or fast speeds.

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The CMM Group $$$

Lake City, PA  |  800-840-9906

Van Air, with 60+ years of experience, is a manufacturer of absorbent desiccant air dryers and gas dryers, filters and drain valves. We also supply the desiccant materials. If our standard gas dryers and air dryers won’t suite your application, we make custom dryers. Check out our industrial dryers.

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Van Air Systems $$$
placeholder image Carrier Vibrating Equipment, Inc. Dürr Systems, Inc. Industrial Kiln & Dryer Group Excel Dryer, Inc. The CMM Group Van Air Systems

Compressed air users may experience several operational issues due to excessive water in the gaseous or liquid state. These include fouling processes and products, freezing of exterior airlines, piping and equipment corrosion, malfunctioning pneumatic process control instruments, and more.

Working Principle of Air Dryers

Each air dryer uses a different process to remove the water vapor from the air they are meant to dry. The term "dew point" refers to measuring how dry the air is after processing. The water vapor in the air decreases as the dew point temperature rises.

Different Types of Air Dryers

There are several different styles of compressed air dryers. The dew point frequently identifies these styles’ performance characteristics.

  • Refrigerated Dryers
  • Deliquescent Dryers
  • Regenerative Desiccant Dryers
  • Membrane Dryers

Refrigerated Dryers

Two heat exchangers are used in refrigeration dryers, one for air-to-air and the other for air-to-refrigeration. The purpose of using two heat exchangers is to lower the size of the compressor needed by cooling the hot incoming air with the cold departing air. At the same time, the rising temperature of the outgoing air stops condensation from happening again.

A huge mass takes much longer to cool when the refrigeration compressor is running; therefore, the compressor runs longer and stays OFF longer. The average operating range for these machines' dew points is between 35 and 40 °F. These machines supply compressed air with lower dew points if the optional "cold coalescing filter" is chosen.

Refrigerant Air Dryers

Deliquescent Dryers

A deliquescent dryer consists of a pressure vessel filled with a hygroscopic material that collects water vapor. At the bottom of the pressure vessel, the media gradually dissolves or deliquesces to produce a solution. Regular media replacement and liquid draining from the vessel are required. Typically, the media comes in tablet or briquette form.

Deliquescent dryers operate without electricity and do not have any moving parts. Therefore, common applications frequently include hazardous, mobile, or remote work environments. In addition, deliquescent dryers are used to remove water vapor from waste gases like digester gas, landfill gas, natural gas, and compressed air. The performance of a deliquescent dryer is significantly influenced by the temperature of the air or gas being treated; lower temperatures produce higher performance, as shown by the exit dew point.

Deliquescent Air Dryer

Regenerative Desiccant Dryers

Regenerative dryers, twin tower dryers, and absorption dryers are some of the more popular names for desiccant dryers. A pressure vessel containing a porous media, such as activated alumina, silica gel, molecular sieve, or another desiccant substance, is used to transmit compressed air. The desiccant can lower the air's water vapor's dew point to or below 40 °C (104 °F) and indicates that unless the air is cooled to 40 °C (104 °F), water will not condense (deposit).

Regenerative Desiccant Dryers

Membrane Dryers

Membrane dryers are devices that dry compressed air using a dehumidification membrane by compressing filtered air to remove liquid water, oil, and particulates. The water vapor-filled air travels through the membrane bundle's hollow fiber center bore. A tiny quantity of the dry air product is also directed along the fibers' exterior surface to remove the water vapor that has pierced the membrane. Then, clean, dry air is delivered to the application while the moisture-filled sweep gas is vented to the atmosphere. Membrane air dryers operate without power and are silent and dependable.

Membrane air dryers decrease the incoming dew point. The majority of dryers contain specifications for challenging air dew points and pressure. Therefore, the output dew point is even lower than required if the inlet dew point is lower than the specified challenge air. Pressure also has an impact. The exit dew point will decrease if the pressure exceeds the rated standard. The extended residence time the air spends inside the membrane causes this decrease in the output dew point. The kind of membrane will determine how much it has improved.

Membrane Air Dryers

Applications of Air Dryers

Materials Manufacturing

To provide and maintain an optimal production environment, dried compressed air is frequently needed for material manufacturing procedures like lathe chucks, pressure cleaning of mechanical parts, and component cooling.

Oil and Gas Recovery

Applications of air dryers in oil and gas recovery include:

  • Operation of drill rig controls
  • Oil and gas transportation
  • Driving pneumatic systems
  • High-pressure enhanced oil recovery

Pharmaceutics

In the pharmaceutical sector, air dryers are utilized in various processes, such as tablet manufacture, fermentation, instrument air drying, drug drying, and packaging, which all need to dry compressed air.

Fabric Synthesis

High volumes of compressed air are needed in the textile production industries for air knives, air blow guns, lifting with pneumatic systems, and cooling equipment components.

Food and Beverage Production

High-quality food and drink are produced, packaged, and preserved using dried compressed air.

Advantages of Compressed Air Dryers

  • Lengthening of piping, equipment, and tool lifespans
  • Equipment maintenance cost savings
  • Prevention of equipment corrosion
  • Effective filtration of compressed air to remove particulates, water vapor, and other moisture content

Disadvantages of Air Dryers

  • Higher maintenance cost
  • Requires high initial investment
  • Air filtering is required to stop the degradation of desiccant caused by suspended oils.

Air Dryer Informational Video

 

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