The high efficiency heated regenerative desiccant dryer is used exclusively for purifying compressed air in nonhazardous locations. Water vapor is adsorbed onto the desiccant and dry compressed air exits through valve b where, abrasive desiccant dust is captured by an afterfilter. One of the most significant drawbacks of twin tower desiccant dryers is their use of the purge air. One type of dryer seen frequently across the world is the regenerative desiccant dryer. Blower purge dryers use a combination of air from an external blower, heat and minimal compressed air. The hl series dryers are designed to be a complete air treatment solution sized for low pressure drop and performance, outfitted with standard equipment to include an oil removal 0. How this happens depends on the type of desiccant dryer.
Replacement instructions spin on desiccant cartridge part no. Desorption occurs as the desiccant releases all timing functions are controlled by the microprocessor controller. En description 2 description ingersoll rand desiccant dryers are designed to remove moisture vapour from compressed air. Desiccant dryer brochure delair the compressed air. No process air is used during this phase of the overall dryer. Skarstrom in 1956 at the esso refinery in bayway, new jersey 1.
Our precise engineering and designs provide reliable products that will protect your operations for years to come. Desiccant regenerative dryers desiccant modular desiccant heatless desiccant externally heated desiccant blower purge 310,000 scfm. Heatless dryers use only compressed air as a purge. When the desiccant reaches its level of saturation if using indicating desiccant the color will change from.
Parker finite fdd series, compressed air and gas desiccant. Designed for simple service with desiccant canisters. View and download sullair sd series user manual online. Dryer operation the dryer operation is designed to give smooth, uninterrupted delivery of compressed air to the designated specification. However, in cases where compressed air is exposed to freezing temperatures or where the product, process, or equipment is highly sensitive to moisture. Once vessel one reaches a set level of saturation, the air switches to pass through. Dont settle for less than the ability to satisfy all of your requirements for clean, dry compressed air. They combine reliable system design, high energy efficiency. It can be removed once the tank is full for more portability. Ahld eseries heatless dryer heatless desiccant dryer 70 8,000 scfm since 1994, aircel has been delivering quality, industry leading compressed air dryers and accessories for production lines and facilities all over the world.
Saturated, compressed air passes through vessel one where the desiccant adsorbs moisture lowering the dewpoint to expel dry compressed air 2. These have a large thermal mass and regeneration demands large amounts of energy. Kaeser can design a system that will efficiently deliver air quality suitable for your application. Compressed air dryer instruction manual gbsseries blower purge desiccant dryers contents introduction 2 desiccant loading procedure 5 general safety information 2 operation 67 proper use of dryer 3 dewpoint demand controller 8. It is capable of removing dirt, water, oil, and water vapor from compressed air.
Dry air from the drying tower outlet is expanded to atmospheric pressure and sent through the saturated desiccant, forcing the. The moisture is released and send with the air to the atmo sphere. Wet compressed air passes through a prefilter and enters the pressurized online desiccant filled drying tower a through valve xsv1a. Desiccant air dryer d series compressor desiccant dryer. Heatless dryers use part of the compressed air to regenerate the desiccant in the opposite tank. During the cycle of operation, the first pressure housing is fully pressurized and air flow is directed upwards through the desiccant cartridge, removing moisture from the air.
The simple technology of heatless dryers divert a portion of dried compressed air to an offline tower. Heated heated dryers use an external heat source such as a hot air blowerreducing or eliminating process air loss during the regeneration process. The regeneration process 2 the blower takes ambient air 3 and blows it over the external heater. Sullair desiccant dryers have a dual tower design in which both vessels are filled with desiccant material. Current compressed air dryer types include the following products.
Desiccant dryers 5 heatless desiccant dryers drying. Tailor hhl series dryers to take full advantage of air system efficiency improvements driven by air audit strategies. Eaps team of engineers and product developers designing. Dry air from the drying tower outlet is expanded to atmospheric pressure and sent through the saturated desiccant, forcing the adsorbed moisture out 2 and 4. It has lower lifecycle costs, due to its lower energy consumption and simplified maintenance. Service kits include a filter element, orings, and everything else you need to service. Where required, point of use filtration, refrigeration or desiccant air dryers can provide the correct air quality, without the need for drying the complete compressed. The dryer alternately cycles the compressed air flow through twin desiccant towers.
After desorption, the blowoff valve is closed and the vessel is repressurized. These dryers do not have the compressed purge air loss present in heatless dryers. Couple your dhp dryer with the appropriate fil filtration to achieve up to iso 8573. Engineered air products has been at the forefront of desiccant dryer development and manufacturing since 2008, establishing eap as the leader in low dew point dryer technology with focus on desiccant dryers capable of iso class 85731, class 3 for dew point or better. Simply remove the flange and bowl and replace with new desiccant or regenerate saturated desiccant by heating to 275f. Our products can be found in all corners of the world. Air dryers and air treatment products air services company. Drymec ltd is the uk agent for friulair dryers and water chillers.
Although the dryer is a free standing package, it may be secured by bolting the dryer base to the floor. Quincy desiccant air dryers purify compressed air by adsorbing water vapor. In regeneration mode, a sidestream of dried process air c with an affinity for moisture, leverages the heat of adsorption to desorb offline desiccant chamber 2. The activated alumina desiccant has a high surfacetovolume ratio and great affinity for water vapor. For a cfm heatless air dryer, the 15 to 20 percent purge air loss would be between 150 and 200 cfm. Drying wet compressed air flows upward through the adsorbent desiccant from bottom to top 1. Sullair sd series user manual pdf download manualslib.
The compact, inline design is ideally suited for point of use applications, such as paint spraying operations or pneumatic tools, which require clean, dry compressed air. Heatless desiccant air dryers hhs series, hhl series and hhe series 40 to 5400 scfm 68 to 9175 nm 3 h since 1948, compressed air users around the world have relied on hankison to provide innovative compressed air treatment. Removing moisture from compressed air with a pressure dewpoint pdp as low as. Dry system air flows back through the air dryer to regenerate the desiccant. Most of the times hot compressed air from the compressor is send through the saturated vessel, the moisture is released and transported with the compressed air to a cooler. Compressed air dryer instruction manual gehseries desiccant dryers external heated regenerative contents introduction 2 general safety information 2 proper use of dryer 3 receiving equipment 3 installation location 3 inlet conditions 3. Wet compressed air flows upward through the desiccant which adsorbs the moisture, from bottom to top 1. Desiccant dryer saturated air in dry air out vessel one vessel two. Heatless compressed air desiccant dryer calculation principles. Desiccant dryers, heatless regenerated kaeser compressors. Hr series heatless desiccant air dryers are the perfect companion to smaller horsepower compressed air systems for providing ultradry clean air. Open all drain cocks to ensure all air tanks have been depressurized to 0 psi.
Adsorption air drying is based on the molecular attraction of the water particles contained in the compressed air, when passing through an adsorbent or desiccant air dryer material. Dgh series heatless desiccant dryers open up a world of customizable performance opportunities with four standard iso quality class levels of pressure dew points to choose from. It consists of a separator and desiccant cartridge. Many aec desiccant dryer models are expandable to meet production demands. Receive optimum drying performance under the most demanding conditions with aec desiccant dryers. Regenerative desiccant dryers use a desiccant medium to adsorb water vapor present. Since 1994, aircel has been delivering quality, industry leading compressed air.
Consequently, the compressed air is generally at an elevated temperature and 100% relative humidity. F are attained by directing the flow of wet compressed air through a bed of highly adsorbent desiccant. The dst series single tower desiccant air dryer provides quality air to your application with minimal investment. It uses pressure swing principlepurge air to generate the desiccant bed. Filtered air passes through the desiccant dryer and into the tank. They are ready to operate after connecting to proper services. Moisture transfer is enabled by the difference in vapor pressures at the desiccant surface versus the air passing over it. Desiccant dryers ten lessons learned by ron marshall for the compressed air challenge the compressed air challenge training material for our fundamentals of compressed air systems seminar briefly covers a number of types of air dryers. The desiccant should be replaced every 3 to 5 years. As the desiccant in this tower adsorbs moisture from the air, the desiccant in the dryer s offline tower is purged of moisture and readied for use. The heat of compression desiccant dryer this type of dryer uses the heat generated during the compression process to heat the desiccant beads and to remove the moisture.
Heat of compression dryers use the heat of the compression. Removing moisture from compressed air with a pressure dewpoint pdp as low as 70c100f, atlas copco desiccant dryers eliminate system failures. Our desiccant air dryer system also includes one large desiccant bag specifically designed to absorb moisture and condensation from your compressed air system. Optimal desiccant utilization guarantees the lowest dew point. No effort has been spared to provide a comprehensive instruction manual for the use of the parker dryer. For models idw45n to idw365n the dryer will include a drain adaptor kit to. Location locate your desiccant air dryer on a level floor free from vibrations and in clean surroundings. Although operating costs run higher than the heated desiccant dryers. Desiccant air dryers ahld eseries airtec global llc. Desiccant dryers 4 1 2 dry air wet air 3 2 3 5 1 4 dry air wet air the drying process 1 wet compressed air flows upward through the desiccant which adsorbs the moisture, from bottom to top. A4 desiccant dryer rework version 3 ingersoll rand air. Desiccant air dryers the right dryer for you most compressed air applications can achieve the required air quality by using a refrigerated dryer in combination with proper filtration. Desiccant mini pd portable dryer the mini pd dryers are ideal for small press extruders with the dryer and hopper on a compact, castered floor frame.
Information is given not only for the user, but also for the technical. Valves xsv2a, xsv3a, xsv1b and xsv2b remain closed. The dry air then flows through and regenerates desiccant. Dha, cda series desiccant air dryer pneumatic products. Our patented elektronikon control and monitoring system takes continuous care of your desiccant air dryers to ensure. Heatless desiccant air dryers hhs series, hhl series and hhe series 40 to 5400 scfm 68 to 9175 nm 3h since 1948, compressed air users around the world have relied on hankison to provide innovative compressed air treatment solutions for critical applications. The process of compressing air raises its temperature and concentrates atmospheric contaminants, primarily water vapor.
Optional dac compressed air loaders provide easy, safe changeovers eliminating press mounted drying hoppers dri air industries, inc. The dhp series of blower purge desiccant air dryers ensures that your dry air requirements are met. The desiccant dryer is designed so that, as air enters the unit and passes through the desiccant, any moisture is absorbed into the pores of the desiccant reducing the moisture content dew point of the outlet air. Replacement instructions spin on desiccant cartridge. Conventional desiccant dryers use canisters packed with desiccant to dry the air. Once installed, the plant started experiencing pressure problems on a 10 minute cycle. Compressed air dryers are special types of filter systems that are specifically designed to remove the water that is inherent in compressed air. Arrow regenerative air dryers are shipped as completely assembly packages, filled with desiccant ready to install. Using a highly engineered inlet and purge manifold design, it is one of the lowest pressuredrop desiccant dryers in the industry. The heatless dryer process was born out of necessity by dr. Drytec mda heatless desiccant air dryers provide constant 40c 70c is optional pressure dew point. The cartridge has a housing material that acts like a coalescer and final filter.
Drymec compressed air dryers refrigeration type and. Desiccant air dryers are tested and operated before leaving the factory. The aircel hrehrsl heated blower purge desiccant compressed air dryers utilize atmospheric air for regeneration of the desiccant bed significantly reducing or eliminating the use of compressed purged air for regeneration, resulting in an overall reduction in the cost of operation. By cooling the compressed air with a closed refrigeration system a large amount of water condenses and can be separated. As the compressed air passes up through the desiccant bed, it is stripped of the moisture vapor giving you dew points as low as. The dryer can be used continuously without having to dry or replace the desiccant.
Made up of a molecular sieve, this is a very porous material that. Typically, a twin tower desiccant dryer uses some 15 to 20% of its capacity to regenerate the opposite tank, making these dryers inefficient and costly to operate. Desiccant dryers in the dc series can lower the pressure dew point of the compressed air to 70 c. Installation of filter on secondary side of dryer when using the desiccant air dryer, desiccant power is discharged to the secondary side of the dryer.
Desiccant air dryers kaeser compressors pdf catalogs. Skarstrom, who had worked on the manhattan project during world war ii, was developing an automatic gas analyzer for his laboratory when the plants desiccant air dryer. The standard controls for heatless twintower regenerative air dryers feature a fixed 10 minute time cycle which provides for 5 minutes drying on each tower, during which time, the other tower is regenerated through the purging of the desiccant using dry, expanded air from the outlet of the online tower. An auditor was called in to assess the situation and found pressure dips every time the air dryer purged on its left side. Sources of contamination found in a compressed air system.
Desiccant wheel dryers are based on a wheel which has desiccant crystals impregnated and grown on a fibreglass substrate. Desiccant dryer is based on the principle of heatless regeneration and the physical properties of desiccant to adsorb and desorb the water vapour. Hl heatless desiccant dryers use twin desiccant towers with strategically positioned valves to dry compressed air. In these dryers, a portion of the dried compressed air is ex. Heatless dryers offer the lowest capital investment. Highperformance features and ease of operation are key features in aec compact to large dehumidifying dryers. Our developments have set many new standards and new expectations industrywide. Quincy desiccant dryers are supplied with qsorb, an enhanced formula of activated alumina. Upflow drying enables the desiccant to strip the air stream of moisture. Using mineral spirits, clean the body of the air dryer and inspect for excess corrosion or pitting. Drymec was established in 1993 by graham bright to offer high quality compressed air treatment products to industry. When using the desiccant air dryer in an air line containing a lubricated air compressor, install an oil removing filter m fil ter on the primary side of the dryer. Spx flow hankison dh series instruction manual pdf download.
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