Vapor Combustion Units for Tank Farms
Vapour combustion units that destroy hydrocarbon vapours from tank farm storage and tanker loading.
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Vapours from storage and loading destroyed on site
CRA's vapour combustion units collect the hydrocarbon vapours displaced from tanks and tankers and burn them in an enclosed combustor, with destruction efficiency above 99%.
Destruction efficiency
>99%
Mount
Compact skid
Duty
Continuous or intermittent
Calorific range
Low to medium
What does a vapour combustion unit do at a tank farm?
Filling a tank or a tanker pushes out the vapour above the liquid. At a tank farm or loading terminal that vapour carries hydrocarbons and must be controlled. A vapour combustion unit collects it through a vapour header and burns it inside an enclosed combustor.
How it works
The unit sits at the end of the vapour collection header, with flame arrestors on the incoming line.
Tank filling or tanker loading pushes vapour into the collection header.
Flame arrestors on the vapour line guard against flame travelling back.
The vapour burns inside the enclosed combustor.
The unit follows the vapour flow from steady breathing to loading surges.
Between loading operations, the unit waits in standby.
Key Benefits
The combustor is designed to destroy more than 99% of the hydrocarbon vapours.
Vapours burn inside the unit, with no open flame at the terminal.
The unit copes with intermittent loading flows as well as steady breathing losses.
The packaged design keeps the footprint small and installation simple.
The unit burns vapour streams of low to medium heating value.
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
Frequently Asked Questions
When does a tank farm choose combustion over vapour recovery?
Combustion suits sites where the vapour has little value or the flow is small or intermittent. Recovery suits larger, steady flows of valuable vapour.
What destruction efficiency does the unit achieve?
CRA designs its vapour combustion units for destruction efficiency above 99%.
Can the unit handle loading surges?
Yes. CRA sizes the unit for the peak loading flow as well as the steady breathing losses.
What data does CRA need to size a vapour combustion unit?
CRA needs the tank filling and loading rates, the vapour composition, the vapour pressure available and the site conditions.
Does CRA supply flame arrestors for the vapour line?
Yes. CRA supplies flame arrestors and pressure vacuum relief valves for tank and vapour line safety.