lfg | h2s siloxanes & dehumidification · biogas at the digester or lfg well out-let usually...

Gas Treatment Biogas Gas Treatment Biogas Gas Treatment Biogas --- LFG | HLFG | HLFG | H222S S S --- Siloxanes & DehumidificationSiloxanes & DehumidificationSiloxanes & Dehumidification

Biogas TreatmentBiogas TreatmentBiogas Treatment

HHH222S Removal S Removal S Removal --- Extraction of SiloxanesExtraction of SiloxanesExtraction of Siloxanes

DehumidificationDehumidificationDehumidification

CostCostCost---Effective and Intelligent Biogas Conditioning SolutionsEffective and Intelligent Biogas Conditioning SolutionsEffective and Intelligent Biogas Conditioning Solutions

Environmentally Friendly and Efficient

Our advanced 2G® CHP technology utilizes biogas from the fermentation

process (anaerobic digestion) in natural biodegradable material. The biogas,

which is both efficient and economically beneficial, is used to generate elec-

tricity and heat. 2G® biogas cogeneration modules are specifically developed

for biogas applications.

A strong Partner providing “Best-in-Class” Technology

Worldwide 2G® is the market leader for modular gaseous fuel CHP systems.

2G® biogas power generation plants have been tried and successfully oper-

ated for many years. Manufacturing biogas cogeneration systems and gas

treatment technologies requires more know how than just packaging a

standard engine generator. 2G® sets standards as technology leader. The

company continues to lead the way with an unparalleled team of gas engine

experts and significant research & development investments.

More than 4000 CHP & Gas Treatment Systems installed

Thousands of satisfied customers appreciate the reliability and high efficien-

cy of 2G® cogeneration modules. A combination of added value, cost-

effectiveness, and high system availability assure that customers enjoy the

highest level of operational and economical results. When it comes to biogas

and specialty gas power generation 2G® customers don’t take chances.

Your BenefitsYour BenefitsYour Benefits

Reduced Cost and higher ROIReduced Cost and higher ROIReduced Cost and higher ROI

Reliability and Top PerformanceReliability and Top PerformanceReliability and Top Performance

Less Risk, both Economically & TechnicallyLess Risk, both Economically & TechnicallyLess Risk, both Economically & Technically

Overall better Economy and Added ValueOverall better Economy and Added ValueOverall better Economy and Added Value

Time after time the worlds leading

biogas plant developers select 2G® to

safeguard their investment and suc-

cess. Why ? Because there is no

higher level of quality, efficiency, and

durability available. The number of

installed 2G® units say it all.

Best In Class TechnologiesBest In Class TechnologiesBest In Class Technologies

Biogas Treatment & ConditioningBiogas Treatment & ConditioningBiogas Treatment & Conditioning

especially designed for Biogas Plantsespecially designed for Biogas Plantsespecially designed for Biogas Plants

2G2G2G®®® CHPCHPCHP

Biogas & LFGBiogas & LFGBiogas & LFG

Power Generation SystemsPower Generation SystemsPower Generation Systems

with fully integrated Gas with fully integrated Gas with fully integrated Gas

Treatment TechnologyTreatment TechnologyTreatment Technology


Biogas Dehumidification SystemsBiogas Dehumidification SystemsBiogas Dehumidification Systems

Including ReIncluding ReIncluding Re---Heating TechnologyHeating TechnologyHeating Technology


777

111

2*2*2*

121212

333 111111

444

101010

555

666

888

141414

111 Incoming Gas Pipeline

222 Condensate Pit (Customer Scope, not provided by 2G®)

333 Gas Connection Point (Customer Interface), pre-flanged with Valve

444 Gas Cooling Section / Biogas Heat Exchanger

555 Gas Re-Heating Section / Biogas Heat Exchanger

666 Heat Circuits connected to CHP Mix Cooler Circuits

777 Exit Flange Connection (to H2S or Siloxane Filter, or to Gas Blower)

888 Chiller Unit for Gas Cooling

999 Condensate Return Exit

101010 Condensate Return Pipe (returning to Gas Inlet)

101010 Condensate Release (by Gravity)

121212 Condensate Drain (must be unobstructed)

121212 Alternative Condensate Drain (optional)

131313 Light Concrete Pad (Customer Scope, not provided by 2G®)

999

131313

*This is just an example of apossible Condensate Pit. Various different types and designs are available in the market.

Biogas Dehumidification - CHP Wall or Pad Mounted

.

Biogas Dehumidification SystemBiogas Dehumidification SystemBiogas Dehumidification System

Protect your CHP Investment & EfficiencyProtect your CHP Investment & EfficiencyProtect your CHP Investment & Efficiency

Reduce Service & Maintenance CostReduce Service & Maintenance CostReduce Service & Maintenance Cost


Why is Biogas Dehumidification important?

Gas drying optimizes the combustion process in the CHP engine, resulting in an increased engine efficiency and lower fuel gas consumption. Reducing the contamination of engine oil with condensate will reduce the number of oil changes required and save costs. In addition certain Methyl Cyclo Siloxane components, and Ammonia NH3 are also harmful substances that are naturally partially released along with the condensate. Given that Ammonia is soluble in water, NH3 contents are reduced during the water vapor removal / cooling & drying process.

Water (high moisture content) can be one of the most destructive contami-nants for engine lubricants. It accelerates oil oxidation and interferes with oil film production. High moisture content should also be removed from biogas to prevent the formation of “Carbonic Acid”. These acids cause a rapid drop in the oil's alkalinity (base number), resulting in an unprotected corrosive environ-ment and base oil oxidation. Presence of these acids, if unnoticed, will accel-erate wear and possibly even corrode critical engine parts that could result in major unplanned repairs and downtime.

Gas Washer / Dryer Option for very large Biogas Volumes

The 2G - SD gas washer/dryer GST-1000-S is designed for the dehumidifica-tion of bio and LFG gases. The main component of the 2G-SD gas washer/dryer is a packaged column inside a reactor vessel, and the biogas streams upwards. In the opposite direction (downwards) flows very cold water. Within the reactor vessel an intensive exchange of heat and mass takes place be-tween the cold water and the warm biogas. The gas cools down and the con-tained vaporous humidity condenses to fine fog droplets, which are captured by the cold water flow streaming downwards. The water is continuously recy-cled. No external water supply is required. Gas impurities like solid particles and certain harmful gas components are absorbed by the water according to their water solubility.

Biogas at the digester or LFG well out-let usually has a very high water vapor content (between 30 to 100g water per m³ Gas, equal to 1.06 to 3.53 ounce per 35 ft³), depending on the ambient temperature. That’s approx. 270,000 liter (72,000 gallon) water per year, equal to approx. two standard size swimming pools. During wintertime, at lower temperatures, the water vapor can easily condense inside the gas pipeline leading to the CHP. This con-densate in combination with H2S, NH3 ,CO, and H2, can cause accelerat-ed corrosion. Further, condensate in the intake section automatically reduc-es engine efficiency. It also significantly reduces the effectiveness of H2S car-bon filter systems.

Why is H2S and Siloxane Removal important?

Why is the Investment a very smart Idea? High Concentrations of Sulphur, es-pecially Hydrogen Sulfide H2S, and Volatile Methyl Siloxanes (VMS) often found in Biogas are harmful for any Engine or Turbine. VMS convert into Sili-con Dioxide as Combustion takes place. The Silicon Dioxide combines with other Elements in the Gas, as well as with the Lubrication Oil, forming a hard Matrix that accumulates Surfaces, especially within the Combustion Chamber. As the Deposits accumulate, the Engines Efficiency reduces and causes irreg-ular Detonation in the Combustion Chambers. The resultant unburned Fuel contaminates the Exhaust Gas increasing emissions. At this Point the Engine is at high Risk of significant Damage.

PLEASE NOTE: Certain Suppliers of Engines and Turbines state that up to 800ppmv H2S is acceptable and it would not affect your 1 Year Warranty. It is important to understand that most H2S and Siloxane Damages occur “after Warranty Expiration”. At that time every engine owner operating without gas cleaning will experience significant Problems. As a Result, Service & Mainte-nance Costs are increasing quite significantly. We are aware that other Suppli-ers make potential Buyers to believe that it is OK to operate without Gas Treat-ment and that no H2S Removal is required. Such misleading Statements are not representing the Truth and Facts. It is always more cost-effective and your long-term Service Cost will always be cheaper if H2S and Siloxanes are re-moved and the Gas is treated.

Your Benefits and Advantages:

Fully integrated H2S and Siloxane Treatment Systems

Most cost-effective Solution

Activated Carbon Filter Media specifically developed forH2S and Siloxane Removal

Maintenance Free Design

Process optimized Configuration

Proven Technology applied at Thousands of Biogas Plants


HHH222S & Siloxane Filter TechnologiesS & Siloxane Filter TechnologiesS & Siloxane Filter Technologies

Innovations from the Market LeaderInnovations from the Market LeaderInnovations from the Market Leader

High Sulphur (H2S) and Siloxane Content also damages the Exhaust Gas Heat Exchanger and the Exhaust System.

Severe Damage can occur to Valves, Pistons, Piston

Rings, Liners, Cylinder Heads, Spark Plugs and Tur-

bochargers, necessitating premature Servicing and

costly Repairs.

Advanced CHP TechnologiesAdvanced CHP TechnologiesAdvanced CHP Technologies

Innovations from the Market LeaderInnovations from the Market LeaderInnovations from the Market Leader

About 2G®

The 2G® group is a renowned manufacturer dedicated to the production of ad-

vanced CHP decentralized power generation systems, providing customers

with genuine “plug & play”, highly efficient and dependable cogeneration mod-

ules. The company maintains a “Best-in-Class” product portfolio. 2G is a solid

and financially strong corporation publically traded at the Frankfurt Stock Ex-

change. 2G® manufacturing plants are located in the USA and in Germany.

Additional subsidiaries are operating in many countries. 2G®’s U.S. and South

American distribution and service support headquarters 2G - CENERGY® is

located in Florida.

For more Information

Please visit our website at: http://www.2ghttp://www.2ghttp://www.2g---cenergy.comcenergy.comcenergy.com

2G - Cenergy Power Systems Technologies Inc. 205 Commercial Drive St. Augustine, FL 32092 - USA Tel.: +1-904-579-3217 Fax: +1-904-406-8727 E-mail: [email protected]

Contact the Cogen CHP ExpertContact the Cogen CHP ExpertContact the Cogen CHP Expert

No better Solutions anywhereNo better Solutions anywhereNo better Solutions anywhere


lfg | h2s siloxanes & dehumidification · biogas at the digester or lfg well out-let usually...

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