Landfill Gas Extraction and Flaring
Blowers, knockout drums and enclosed flares that draw landfill gas from the wells and destroy it.
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From the well field to the flare in one package
CRA supplies landfill gas extraction and flaring as one system: condensate knockout, blower, flame arrestor and an enclosed flare with turndown up to 100:1.
Scope
Knockout, blower, arrestor and flare
Turndown
Up to 100:1
Destruction efficiency
>98%
Standards
EPA NSPS/EG, API 537
How does landfill gas extraction and flaring work?
The blower draws gas from the wells through the collection pipework, with a knockout drum ahead of it to remove condensate. It then delivers the gas through a flame arrestor to the enclosed flare, which burns it at ground level and follows the flow as it changes over the life of the site.
How it works
The package sits between the site's collection header and the flare, with the blower and flare run as one system.
The blower holds the well field under suction.
A knockout drum removes liquid ahead of the blower.
A flame arrestor guards the line before the flare.
The enclosed flare destroys the gas at ground level.
The flare follows the gas flow as the site ages.
Key Benefits
The blower draws gas from the wells to the plant.
A knockout drum takes out liquid before it reaches the blower.
A flame arrestor stops a flame travelling back along the line.
The enclosed flare follows the gas flow as the site ages.
Blower and flare are engineered and controlled together.
Projects That Push Boundaries
CRA's first Sub-Saharan Africa landfill gas installation, delivered under a single contract from design through commissioning.
Enclosed flare tower and extraction system handling 600 Nm3/h of landfill gas at DRE at or above 98%, designed to CPCB stack limits.
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.
Frequently Asked Questions
What does a landfill gas extraction and flaring system include?
Beyond the wells and collection pipework, it includes a knockout drum for condensate, a blower that holds the field under suction, a flame arrestor and the flare. CRA supplies the equipment from the knockout drum to the flare.
Why does a landfill need suction on its wells?
Without suction, landfill gas builds up in the waste and escapes through the cap or migrates underground. A blower draws it to the flare for destruction.
Why remove condensate from landfill gas?
Landfill gas is wet, and the water condenses as it cools in the pipework. A knockout drum removes it before it can damage the blower or reach the flare.
Can the flare work alongside gas engines?
Yes. Where the gas feeds engines, the flare takes the surplus, and the full flow when the engines are down.
What data does CRA need to size an extraction and flaring package?
CRA needs the gas flow range and methane content, the suction the well field needs, the site layout and the site conditions.