LHC Flare Systems

Safe combustion of low calorific value gases.

Key Features

The LHC (Low Heat Content) Range flare is designed specifically to address the problem of combusting gases with low calorific values, or heat contents. The optimisation of combustion control techniques ensures that heat loss is minimised, whilst air and gas mixing is maintained at a very high level.

In normal landfill gas flares, for example, the usual minimum methane concentration at which a flare will burn is around 15 to 20% methane. Codes of practice, indeed, suggest that combustion should be halted when methane drops below 20% to avoid the possibility of an explosion. The LHC Range flare is designed specifically to burn below 20%. It has inbuilt explosion protection measures and can operate down to as little as 5% methane in air.

Size range

The LHC Range flare is available as a standard in the size range 250 cubic metres per hour to 1,000 cubic metres per hour. Higher volume flow rates can be accommodated by installing multiple units.


The LHC Range flare is ideally suited to older landfill sites, where there remains a problem of methane in sufficient concentration to pose a problem but not sufficient to combust with conventional flaring techniques.

The LHC Range flare may also be applied to situations where off-gas from a process stream is of low calorific value but would benefit from combustion, rather than release to the atmosphere.


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