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Biogas Dryers

Section 10Bulletin A-155

Since 1966 Pneumatech has been an industry leader in compressed air and gas treatment. Our customers are some of the largest companies in the world and our equipment is placed throughout the far reaches of the globe.

Pneumatech introduced a line of specialized Biogas drying systems in 1985 with the singular vision of designing top quality equipment that exceeded our customer’s expectations. As an illustration of our commitment to quality, our very fi rst gas dryer was put in service that same year, and is still in service today.

Through the years, Pneumatech has introduced several innovations in the fi eld such as infi nite unloading compressors which dynamically adjust to plant production to signifi cantly reduce parasitic load. Pneumatech also pioneered the industry through the use of no-gas loss condensate drains, creating a safer ambient environment; gas to gas heat exchangers to reheat the chilled gas to minimize volume loss; state of the art electronics that integrate into site management software and controls and safeties that ensure your equipment is protected in the most demanding of conditions.

Innovation, quality and commitment to service sets Pneumatech apart.

OUR LEGACY

HOW IT WORKS

GAS

GAS

GAS TO GAS

HEAT EXCHANGER

GAS TO REFRIGERANT

HEAT EXCHANGER

TO NO-GAS LOSS

CONDENSATE DRAIN

TO NO-GAS LOSS

CONDENSATE DRAIN

HOT COMPRESSED GAS

WARM COMPRESSED GAS

COOL COMPRESSED GAS

COLD COMPRESSED GAS

REFRIGERANT DISCHARGE

REFRIGERANT SUCTION

COLD REFRIGERANT LIQUID

DISCHARGE CONDENSATE

12

3

4

1. Gas enters the gas-to-gas heat exchanger where it is pre-cooled by the exiting chilled gas. Precooling the gas in this manner allows for a smaller and more effi cient refrigeration circuit.

2. Pre-cooled gas enters the gas-to-refrigerant heat exchanger where the gas is chilled to a temperature of 40 degrees Fahrenheit. When the temperature of the saturated gas drops, moisture condenses out of the gas stream.

3. Chilled gas exits the gas-to-refrigerant heat exchanger and enters the fi ve stage centrifugal separator where the velocity of the gas is reduced, and the condensate is separated from the gas stream. The separator design maintains high effi ciency over a wide range of fl ow conditions. Solids of 10 microns or larger are also removed to 99% or better effi ciency. Condensate empties into No-Gas Loss drains which expel condensate as the level rises in the reservoir.

4. Chilled, dry gas enters the gas-to-gas heat exchanger where the gas is reheated by the hot incoming gas to prevent pipe sweating downstream of the dryer.

Alternate design includes the use of food grade propylene glycol as a cooling media. This design allows for greater capacity correction and energy effi ciency in low load situations.

FEATURES

Long service life and durability

Suits all hazardous location classifi cations

Reduces parasitic load

Gas preservation and safety

Easy servicing

Minimal fouling factor, low pressure dropand increased durability

Better condensate elimination

0-100% load control without freeze-up

Corrosion-resistant materials

Various NEMA ratings available

Infi nite adjusting capacity control

Dual No-Gas Loss condensate drains

Modular gas system construction

Heat exchanger with smooth wall 304 SST tubing

Centrifugal moisture separator

Hot Gas Bypass system

BENEFITS

ENERGY CONSUMPTION CURVEPneumatech’s energy saving design results in far less parasitic load compared to competitors models. The use of chilled glycol as a cooling media, along with infi nite adjusting capacity controls on our state-of-the-art refrigeration screw compressors are unmatched for performance in the industry.

AVAILABLE OPTIONS

ANATOMY OF A DRYER

• Single or Split Skid Designs

• High or Low Pressure Applications

• NEMA 4, 4X, 7/9 or 12

• Air-Cooled or Water-Cooled

• Remote Electrical Panel

• Allen Bradley PLC Controls

• Heresite Coating

• Remote Start/Stop

• Indoor or Outdoor Designs

• Low Ambient Temperature Control (for outdoor installation)

• Compressor Crankcase Heater (for outdoor installation)

• Single Heat Exchanger, Chiller Design

• Dew Point Monitor with Display and 4-20 mA Output Signal

Gas-to-Gas Heat Exchanger

Glycol-to-Gas Heat Exchanger 5 Stage Centrifugal

Separators (2)

Glycol-to-Refrigerant Heat Exchanger

Glycol Circulating Pump

Semi-Hermetic Reciprocating

Compressors (2)

Aircooled Condenser

Analog Intrumentation

Hot Gas Bypass Valves (2)

Heavy Duty Steel Frame Construction

PARTIAL CUSTOMER LIST

SERVICE & AFTERMARKET SUPPORT

Customer Location Size (SCFM)

City of Cincinatti Cincinatti, OH 1000 & 1400Granger Energy Lansing, MI 520Sun Oil Company California 1000 (2)Pacifi c Lighting and Energy Systems Sun Valley, CA 5000Waste Management Wayne, MI 1800Granger Energy Lansing, MI 700Granger Energy Painesville, OH 900Granger Energy Lansing, MI 1800Landfi ll Energy Systems Lorton, VA 2500Summit Landfi ll Chattanooga, TN 400Cumberland Landfi ll Fayetteville, NC 1200Perennial Energy Pensacola, FL 2800Perennial Energy Greenville, NC 1200Perennial Energy Montgomery, AL 1500Brooks Landfi ll Wichita, KS 2800Oklahoma City Landfi ll Oklahoma City, OK 2000Ecogas Corporation San Antonio, TX 5700Southside Landfi ll Indianapolis, IN 4000Archer Daniels Midland Decatur, IL 1000Lanchester Landfi ll Honey Brook, PA 5000Anheiser Busch Merrimack, NH 500Grupo Modelo Breweries Mexico VariousGranger Energy Morgantown, PA 6000

Pneumatech products are backed by a worldwide service network. Technicians are available to travel to the most remote locations across the globe to support the world’s fi nest gas drying systems.

Available services include:• Start-up and commisioning• Contractual maintenance• Parts only service contracts• Emergency service• System check-ups and evaluations• Leak detection• Operator training

Pneumatech supplies a full range of coalescing, particulate and adsorber fi lters. Filters can be sized to meet a variety of micron ratings, grades and effi ciencies. Consult factory for replacement elements for competitive fi lter housings.

Oil Mist Removers

Pneumatech can size and supply stainless steel, aircooled aftercoolers in a variety of sizes. Aftercoolers can be skid mounted with dryers to maintain a clean design and a single point of gas treatment.

Pneumatech No-Gas Loss drains set the industry standard for performance and reliability. Explosion proof electrical, poly carbonate bowls, stainless steel hardware and valves, withstand the rigors of biogas applications. Also available are instrument air actuated drains with 1/2 inch, full opening ball valves for extreme applications.

ACCESSORIES

Filters

Condensate Drains

Aircooled Aftercoolers

In any lubricated gas compressor, sub-micron oil and water particles are present in the gas output stream. These mist particles are formed during the compression cycle and aftercooling process. The water, oil and particles, combine to form an acidic, corrosive mixture that can damage downstream equipment. Pneumatech oil mist removers use multiple collection mechanisms with suffi cient bed contact time to remove the particles from the compressed gas stream.

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Use of this Motor Challenge logo does not imply DOE endorsement.

Pneummatech reserves the

right too change or revise

specifi ccations and product

designn in connection

with any features of our

produccts. Such changes

do not entitle the buyer to

correspponding changes,

improvvements, additions or

replaceements for equipment

previously sold or shipped.

Pneumatech4909 70th AvenueKenosha, Wisconsin U.S.A. 53144(262) 658 - 4300 Fax: (262) 658 -1945

w w w. p n e u m a t e c h . c o m

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