Deliquescent dryers are a perfect solution for portable compressed air applications and point of use fuel gas applications. They are the ideal compressed air and gas treatment choice when low initial cost, ease of use, rugged handling and no electrical power is available on site.  These features offer a unique advantage over other dryer types.
What about filtration? Unlike other types of air and gas dryers, the desiccant media in deliquescent dryers is not fouled by oil being condensed or absorbed. The deliquescent desiccant does not adsorb oil vapor and it isn’t harmed by oil or hydrocarbon aerosols. Since there will be some cooling through the deliquescent desiccant bed, small amounts of oil aerosols can form just downstream of the dryer. For this reason, the use of a coalescing pre filter when treating compressed air with a deliquescent type dryer is often omitted. Instead, a coalescing filter with drain is highly recommended and used as an after filter.
Some customers like to minimize the risk of oil carryover by installing a coalescing pre filter and after filter. In this case, a 5 micron coarse coalescing filter is installed downstream of the compressed air after cooler / separator to make up for separator inefficiencies and a 1 micron general purpose coalescing filter is installed after the deliquescent dryer to assure removal of all oil aerosols. The added benefit of this installation is increased filter life and added protection for your application.
When drying fuel gas coming from a scrubber or separator the higher cost deliquescent desiccant used in gas applications is protected from liquids by a general purpose coalescing pre filter. After the gas passes through the dryer, coalescing filtering of hydrocarbon or oil aerosols may or may not be desired. A general purpose particulate filter should be installed after the dryer to protect downstream equipment from particulate damage in applications where a coalescing after filter is not elected.

Fuel Gas dryer with coalescing filters installed downstream.
Correct selection and placement of filters is important for any air or gas drying application.  For more information on filter selection, we recommend that you download our F200 series catalog


Is your fuel gas fired engine struggling to burn a wet fuel gas supply?

PROBLEM: It is very common to hear customers complain about their gas fired engines struggling to burn a wet fuel gas supply.  Although this problem occurs more frequently in the winter months where the engine, fuel line or fuel pod freezes almost daily, high fuel gas water content can also affect performance in the summer months.

INDUSTRIES AFFECTED: Natural Gas Power Generation, Natural Gas Engines, Valve and Instrument Protection.

SOLUTION:  A deliquescent desiccant type system is an ideal solution to this problem. Using Van Gas PLD Series Natural Gas Pipeline Dryers and one of the four available deliquescent desiccants, can reduce the water content of the gas to a 13% RH.  This type of system is also well suited for low pressure applications with higher inlet gas temperatures.  Van Gas PLD Series Natural Gas Pipeline Dryers can be installed outdoors in remote locations. Deliquescent desiccants are a simple, effective way to meet natural gas engine and generator moisture specifications. For more information on our PLD Series Natural Gas Dryers click here.

Van Gas Technologies is here to help with any Natural Gas questions you may have. Please feel free to call us at 1-800-840-9906. We are here to help find solutions to your applications!

For more information on our Deliquescent Desiccants please feel free to download our Deliquescent Desiccant Brochure.



Natural Gas Dehydration, Fuel Gas Conditioning, Instrument Gas Drying

April 24, 2017

Natural gas emerges from the ground with little resemblance to the clean dry fuel used in our homes and power plants. Many contaminants are present in raw natural gas including water vapor, which can cause a range of problems. These problems include the freezing of regulators and pipes, hydrate formation, liquid accumulation in pipeline low […]

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How to Avoid Air Line Freeze-ups By Using Ambient Outside Air and Installing a Deliquescent Dryer Outdoors.

February 20, 2017

In the compressed air and natural gas industry, there are many uses for dryers and dehydration applications that are unique. Very rarely are there two applications with the exact same conditions or specifications, unless there is a design for such a use and it is to be repeated. Recently I came across a customer that was […]

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Heater Treater Burner – Freezing Up

December 11, 2012

Many of the people we work with operatate in western Canada and the northern parts of the U.S.  Always around this time of year,  below freezing temperatures settle in with little relief.  Cold temperatures expose long festering problems associated with the use of wet gas for fuel and pneumatics.  Equipment starts to freeze-up. This morning I got […]

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Desiccant Dehydration Systems Antrim Shale Michigan

November 12, 2012

Last week we signed up and trained a new Van Gas Technologies distributor in the Traverse City, Michigan region, Hague Equipment.  Hague has served the natural gas industry for many years, and we’re eager to be working with a new partner. Hague has extensive experience packaging gas compression and servicing production equipment.  In particular, Hague has […]

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Water Dew Point vs. Hydrocarbon Dew Point

September 28, 2012

Bill Ulrich has a new post on our sister Blog at Van Air Systems, discussing the differences between water and hydrocarbon dew point. The industry practice of referring to rich, high BTU natural gas as “wet” gas is sometimes confusing to the degree that this use of the word wet does not mean water saturated.  Conversely, the term […]

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Wyoming Gas Fair – GasDry Desiccants

September 14, 2012

  We’re at the Wyoming Gas Fair this week in beautiful Jackson.  The mountain air is quite dry.  Here are pictures showing a GasDry Pime tablet and a GasDry Max tablet after sitting out for about 24 hours.  The GasDry Prime tablet has not formed any liquid, meaning the relative humidity of the ambient air must […]

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Colorado Oil & Gas Association Trade Show

August 14, 2012

I’m working a booth this week at the COGA show in Denver.  First thing this morning, I set out a fresh (i.e. dry) GasDry Max tablet in a plastic dish.  That was three hours ago.  Already the desiccant tablet has started to absorb humidity from the ambient air and is deliquescing.  Passersby are always astonished, even incredulous, that the […]

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CO2 Dehydration

August 3, 2012

I’ve had some discussions this week with an engineer from one of the big EPC firms who’sdoing work for a midstream client in the Rocky Mountains.  We’re looking at drying a stream of high pressure (1200 PSIG), wet CO2.  The required moisture spec is not terribly stringent; our basic desiccant GasDry Prime will very likely […]

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