Landfill Gas Flares for Active Landfills
Enclosed landfill gas flares for active and closed landfill sites, built for gas whose flow and methane content change over the site's life.
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Enclosed flares for landfill gas over the life of the site
CRA's enclosed landfill gas flares destroy the gas collected from active and closed cells and hold the combustion temperature as the flow and methane content change over the years. They start, prove the flame and shut down on their own, which suits sites with little staffing. CRA supplies fixed flares for permanent sites and trailer-mounted units for temporary works.
Destruction efficiency
>98%
Turndown
Up to 100:1
Operation
Unattended
Supply
Fixed or trailer-mounted
What does a landfill gas flare do?
A landfill gas flare destroys the methane and odorous compounds in the gas collected from a landfill. An enclosed flare burns the gas at ground level inside a chamber, with the flame out of sight, and the exhaust can be sampled to show that the site is meeting its permit.
How it works
The flare is connected to the site's gas collection system and runs whenever there is gas to destroy.
The collection system draws gas from the wells and sends it to the flare.
The flare starts and proves its flame on its own.
The gas burns inside the enclosure, with the flame hidden from view.
The flare holds its combustion temperature as the gas flow and methane content fall over the life of the site.
The flare runs without operators on site and shuts down safely on a fault.
Key Benefits
The flame burns inside the chamber, out of sight, with the exhaust leaving through the stack.
The flare is designed for the flow range of the site over its life, including low methane gas.
Automatic start-up, flame supervision and shutdown suit sites with little staffing.
The flare holds its combustion temperature as the gas flow and methane content change.
CRA supplies fixed flares for permanent sites and trailer-mounted flares for temporary works.
Projects That Push Boundaries
CRA's first Sub-Saharan Africa landfill gas installation, delivered under a single contract from design through commissioning.
Enclosed ground flare system for MCGM's Gorai dumpsite closure, commissioned and in continuous operation since.
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
Why use an enclosed flare on a landfill?
An enclosed flare hides the flame, holds a controlled combustion temperature and allows the exhaust to be sampled, which most landfill permits now require.
Can the flare handle low methane gas later in the site's life?
CRA designs the flare for the methane range the site is expected to produce. Where methane falls very low, the design can include a burner for low calorific gas or a support fuel.
Can the flare run without operators on site?
Yes. CRA's landfill flares start, prove the flame and shut down automatically, and can report faults remotely.
What does CRA need to size a landfill gas flare?
CRA needs the expected gas flow over the site's life, the methane and oxygen content, the supply pressure and the site conditions.
Does CRA supply mobile flares for landfill work?
Yes. CRA supplies trailer-mounted enclosed flares that can move with the works on biomining and remediation projects.