Super Deliquescent Dryers - SD Series

Why Dry Air ?

All pneumatically operated equipment is designed to perform more efficiently and reliably with clean, dry and properly lubricated compressed air. Atmospheric air is loaded with moisture. At 100 PSIG/6.89 BarG, it takes 7.8 cft/0.22 m³ of free air to produce 1 cubic foot/28.2 liters of compressed air. What may have been acceptable levels of water vapor and contaminants in atmospheric air become intolerable in compressed air.

At 75⁰ F/23.9⁰C and 75 percent relative humidity a 500 SCFM/14.2 Sm³ per minute compressor takes in 90 gallons/340.6 liters of water in vapor form in a 24-hour period. An after cooler will condense only about half of it. The remaining moisture, if not removed, goes into the air lines and causes rust and scale in pipes, valves, instruments, air-operated tools and equipment.

Moisture washes away lubricants needed to run the air compressor. Due to the heat of compression, this oil decomposes to form a corrosive and sticky substance which causes slow and inconsistent equipment operation down stream.

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Why a Super Deliquescent Dryer?

PIONEER's Super Deliquescent Dryers are the only deliquescent dryers capable of suppressing, or reducing, compressed air dew points by up to 70 Deg. F/38.9 Deg. C (PDP). They are ideal for Construction, Painting, Lumber, Sand-blasting, Mining, and other remote area applications...No electricity required.

A Super Deliquescent Dryer requires minimum capital outlay. It is easy to install and requires little maintenance. It typically pays for itself in one year or less by reducing maintenance costs and down time.

Free  Initial desiccant charge

10-year vessel warranty (pro-rated)

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The Super Deliquescent Dryers -

typically have a four-step drying process for superior performance:

1. Separator section : Incoming air/gas enters the vessel near the base in liquid sump area. Due to sudden expansion, free liquid droplets and large particles settle at the bottom.
2. Liquid desiccant section : Holds desiccant in liquid phase. Saves desiccant consumption by pre-drying the air/gas with desiccant that is wasted in competitive dryers. Also, filters air/gas flowing up and condensate flowing down.
3. Semi-solid desiccant section : Prevents fusing, bridging and channeling of desiccant common in competitive dryers. Also lowers desiccant consumption and prevents drain clogging.
4. Solid desiccant section : The air reaches its final dryness by coming in contact with a deep bed of solid desiccant briquettes where the last traces of moisture are absorbed.

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Pioneer Advantages

1. Built-in Prefilter - The Desiccant Saver pre-filters the air/gas thus eliminating the need for an external prefilter.
2. Minimum Desiccant Consumption - Pioneer’s unique Desiccant Saver reduces desiccant consumption to a minimum. More than half of the moisture is removed in the first three steps of the drying process, none of which require additional desiccant. This reduces the desiccant usage, in relation to water removed, to less than half that of competitive systems.
3. Prevents Drain Clogging - The Desiccant Saver filters the condensate and prevents drain clogging.
4. Quicker Desiccant Fill - Models SD100 and larger have an oversized hand/man hole.
5. Minimum Maintenance - Inspect your Super Deliquescent Dryer about once a week to maintain desiccant at or above the desiccant sight glass level.
6. Exceptional Reliability - No moving parts.
7. Low Pressure Drop - Approximately 1.0 PSIG / .07 Bar G.
8. Energy Efficient - No electrical parts in the dryer.
9. Easy Inspection - Two sight glasses.

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Standard Features of Super Deliquescent Dryers

1. Initial Fill of Veri-Dri 40 Plus Desiccant - FREE.
2. Four-Step Drying - The air is dried four times to give the highest quality of clean dry air.
3. Superior Desiccant - Veri-Dri 40 Plus is the only deliquescent desiccant capable of achieving 70⁰F/38.9⁰C PDP suppression. It can absorb up to four times its weight in water. Click here to view the test results of the Veri-Dri and competitor's brand. And, even as a liquid mixture, it continues to absorb large amounts of moisture.
4. Desiccant Saver - Desiccant which is wasted in competitive dryers is used to increase drying capacity and reduce desiccant consumption. This feature also prevents drain clogging.
5. 10-Year Prorated Vessel Warranty.
6. Epoxy Coated Vessel Interior - For longevity.
7. ASME Vessels - All models are designed and built to meet or exceed the ASME unfired pressure vessel code. Models SD75 and larger dryer vessels are ASME inspected and stamped.
8. Drain - A manual drain is standard. Use a PIONEER Stainless Steel Motorized Drain for automatic operation.
9. Desiccant Sight Glass.
10. Condensate Sight Glass.
11. Stainless Steel Outlet Screen - For longevity and to minimize desiccant carry over.

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Optional Features

1. Pre-Filter.
2. After Filter.
3. Oil-Alert Filter.
4. Best-Aire.
5. Stainless Steel Motorized Drain.
6. High Pressure Dryers - Up to 3000 PSIG/206.8 BarG.
7. Low Pressure Dryers - to atmospheric pressure.
8. Natural Gas Dehydrators.
9. Trailer-Mount/Portable Systems.

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Application Examples

• Remote locations.
• Intermittent air usage.
• Explosive areas.
• Natural gas drying.
• Second stage drying.
• Lumber mills.
• Mines.
• Construction sites

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Desiccant Tests : Tests prove that Veri-Dri Plus is the better desiccant

As a practical way to demonstrate the properties which comprise Veri-Dri 40 Plus, Pioneer’s deliquescent desiccant, a performance test was conducted during the 1990 PIONEER Sales Meeting.

Two identical funnels were filled with equal amounts of desiccant-one with Veri-Dri 40 Plus and one with a leading competitor’s brand. The funnels were placed on top of two identical empty glass containers. These containers were allowed to stand for 24 hours, after which the results were examined by over 80 distributor representatives at the sales meeting.

The results -

Veri-Dri 40 Plus absorbed 10 times more moisture than the popular competing brand.

Advantages of Veri-Dri 40 Plus

• Only deliquescent desiccant capable of achieving 70⁰F/38.9⁰C PDP suppression.
• Absorbs four times its weight in water.
• Continues to absorb moisture in a liquid state.
• Briquetted with a binder for strength and to minimize dusting.
• Dries air/gas up to 3000 PSIG/206.8 BarG.
• Packaged in 425 pound/193 kilogram re-sealable drums or handy 50 pound/22.6 kilogram containers (shipping weights). 

Improve performance of other deliquescent dryers -

You can improve the performance of competitive dryers by using Veri-Dri 40 Plus and Desiccant Saver. Fill approximately one-third of the dryer with Desiccant Saver, and then top it with Veri-Dri 40 Plus.

PIONEER Veri-Dri 40 Plus is available in 50 lb./22.6 kg containers or 425 lb./193 kg resealable drums (shipping weights).

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Specifications and Dimensions

1. High pressure units, up to 3000 PSIG, are available.
2. Initial desiccant charge is included with the dryer.
3. Maximum recommended inlet temperatures is 120⁰F/48.9⁰C. However, oversize the dryer by 15% for every 10⁰F/5.6⁰C increase in inlet temperature over 100⁰F/37.8⁰C.
4. Natural gas dehydrators are available.
5. For nonstandard conditions, see Correction Factors table.
6. Larger sizes available.
7. Inlet/outlet sizes up to SD1250 are NPT connections. Larger sizes come with flange connections.
8. For shipping weight, add vessel and desiccant weights.

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Portable Air Systems

Customized portable air drying systems are available with air or electric motor driven after coolers with Skid-Aire, Lift-Aire and Trail-Aire.

Skid-Aire  Features

Lift-Aire - Features

 Trail-Aire - Features

Optional features for Skid-Aire, Lift-Aire and Trail-Aire systems

• 115V, 12V or 24V Dual Timer Drains.
• Coalescer Pre-Filter.
• Compressed air operated after cooler motors.

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Mr. Best Aire Systems

For systems installed right the first time-without cost over runs and on time, PIONEER recommends..............

Mr. Best Aire Silver

• 10-year prorated vessel warranty.
• Pre-filter with DP gauge and auto drain.
• After filter with DP gauge.
• Three-valve by-pass and filter mounting

Mr. Best Aire Gold
 

• 10-year prorated vessel warranty.
• Pre-filter with DP gauge and auto drain.
• After filter with DP gauge.
• Nine-valve by-pass and filter mounting.
• Stainless Steel Motorized Drain.

Mr. Best Aire Diamond

• 10-year prorated vessel warranty.
• Dual pre-filters with DP gauge and two auto drains.
• Dual after filters with DP gauges.
• Eleven-valve by-pass and filter mounting.
• Stainless Steel Motorized Drain.

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Recommended Specifications

The compressed air dryer shall dry air in a single vessel which utilizes a deliquescent desiccant. The operation shall be continuous and automatic, requiring no utilities. The dryer shall have self-cleaning Desiccant Saver to capture the larger desiccant particles. The Desiccant Saver shall pre-filter and pre-dry the air to minimize desiccant consumption. The Desiccant Saver shall filter the condensate to prevent drain clogging. The inside of the dryer vessel shall be epoxy coated. The dryer shall have a 10-year prorated warranty. The pressure drop through the dryer shall be less than 1% of the operating pressure.

The dryer shall be capable of drying ____SCFM (Sm³/min) of compressed air at ____PSIG/ BarG. The dryer shall be designed for a dew point suppression of ____⁰F/⁰C. The dryer shall be PIONEER model _____or approved equal.

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Combination Systems

PIONEER's Enhanced Drying Systems : -40⁰F/-40⁰C PDP with no purge loss

You can achieve -40⁰F/-40⁰C PDP with no purge loss by installing a PIONEER Super Deliquescent Dryer in combination with a refrigerant dryer or an air-cooled after cooler. A Super Deliquescent Dryer can be added to your existing after cooler or refrigerant dryer. Factory built combination packages are also available.

Air-Cooled After Cooler combination 

A Super Deliquescent Dryer can be installed outdoors with an Air-Cooled After Cooler to deliver -40⁰F/-40⁰C PDP in cold weather. A fan cycling control will prevent freeze up. Heat tracing may also be required to prevent freeze up.

The Super Deliquescent Dryer may also be used in combination with Water-Cooled After Cooler to reduce dew point down to 0⁰F/-17.8⁰C.

Refrigerant Dryer combination

A Super Deliquescent Dryer installed at the coldest point of a R or ADR Series Refrigerant Dryer can provide dew points down to -40⁰F/-40⁰C.

 Advantages of combination systems

1. Easy and economical installation.
2. Zero purge loss.
3. Minimum energy consumption.
4. Low initial cost.
5. Low operation cost-less than 2% the cost of compressed air.
6. High degree of reliability.
7. Absence of high temperature-which can - a. Reduce reliability and b. Affect process for which the air is intended.

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Recommended Installation

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