Biogas to Power Train
A gas train that scrubs, dries and boosts raw biogas so it reaches gas engines clean, dry and at the right pressure.
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Clean, dry gas at a steady pressure for your engines
CRA supplies the gas train that prepares raw biogas for gas engines and CHP: H₂S scrubbing, refrigerated drying and a booster, engineered as one package and sized to the engines it feeds. A flare connection can be included so that surplus gas has a safe route when the engines are offline.
Stages
Scrubbing, drying and boosting
End use
Gas engines and CHP
Flare
Connection available
Supply
Skid-mounted package
What is a biogas to power train?
A biogas to power train is the equipment between the digester and the gas engines. Engines need biogas that is low in H₂S, free of moisture and supplied at a steady pressure, and the train delivers the gas in that condition.
How it works
Raw biogas passes through scrubbing, drying and boosting before it reaches the engines.
A biological scrubber removes the H₂S, or a chemical scrubber with biological regeneration where the load is very high.
Refrigerated drying removes moisture and condensate.
The booster holds the supply pressure the engines need.
The conditioned gas goes to the gas engines or CHP.
A flare connection gives surplus gas a safe route when the engines are offline.
Key Benefits
Scrubbing removes H₂S before it can corrode engine parts and degrade the oil.
Refrigerated drying removes moisture and condensate ahead of the engine.
The booster holds the pressure the engine needs across the flow range.
The train is sized to the engines it feeds and their fuel gas specification.
A flare connection gives surplus gas a safe route when the engines are offline.
Projects That Push Boundaries
Complete gas conditioning train transforming raw digester gas into clean, usable fuel for a city utility.
The CRA Edge
CRA has more than 30 years of experience in gas handling and flare engineering.
Design, R&D and manufacturing are carried out under one roof.
ISO 9001 certified through TÜV NORD, with designs aligned with ASME, API and CE.
Designs are customised to the process needs and the regulations that apply at site.
Applications
Built to help you specify.
Sizing tools, decision guides, and technical references. Use them before, during, and after your evaluation.
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Frequently Asked Questions
What does the biogas to power train include?
It includes H₂S scrubbing, refrigerated drying and a booster, engineered as one package for gas engines.
Which scrubber does the train use?
For engine duty CRA usually supplies a biological scrubber. Where the H₂S load is very high, a chemical scrubber with biological regeneration is used.
Can the train feed an existing engine?
Yes. CRA sizes the train to the engine's fuel gas specification and supply pressure.
What data does CRA need for an offer?
CRA needs the biogas flow range, its composition including H₂S, the engine make and fuel gas specification, and the site conditions.
Does CRA supply the flare as well?
Yes. CRA supplies enclosed biogas flares and can include one with the train.