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Nigeria’s fight against gas flaring

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Flare stack at petroleum refinery in Port Arthur Texas

Nigeria’s fight against gas flaring

Nigeria is aiming to eliminate the need for routine flaring over the next few years. A key component in that challenge is accurate measurement.

Global company Fluenta, specialist in ultrasonic sensing technology for measurement of flare gas, has completed work on the Dangote Refinery in Nigeria (Africa’s biggest oil refinery) to install 18 ultrasonic flare gas meters on large pipelines around the plant.

The Dangote Refinery stands at the vanguard of Africa’s and Nigeria’s move towards energy self-sufficiency. The West African nation currently imports refined petroleum products for its own use, even though it is Africa’s biggest oil producer.

Dangote Refinery, the world’s largest single-train refinery, which began operating in May 2023, is capable of refining 650,000 barrels of oil per day, enough to meet Nigeria’s daily fuel supply requirements, with a daily surplus of 38m litres of refined products, already earmarked for export.

Reducing emissions and flaring (Nigeria’s fight against gas flaring)

Nigeria is positioning itself as a world-leader when it comes to reducing its emissions, and flaring. Flaring is the controlled burning or combustion of excess or waste gases that cannot be processed or captured for productive use, to prevent release of potentially harmful or combustible gases into the atmosphere.

Flare measurement in a refinery is essential, from a regulatory and environmental law compliance perspective, and for accurate emissions monitoring.

Fluenta spent more than four months working with its exclusive Nigerian representative, Daptem Engineering, and the Dangote project team to deliver a workable, accurate and reliable flare measurement solution.

Although it is not unusual to have high levels of customisation associated with such installations, the wide variety and sizes of pipelines, which ranged from 18” to 90” diameters presented a unique engineering challenge.

Larger pipelines make it difficult to measure accurately as the acoustic pulse has further travel which could weaken it and lead to less accurate readings. In addition, flared gas expelled through these pipelines is high in CO2, a particularly difficult gas to measure using ultrasonic technology.

The team implemented a multitude of innovative, bespoke solutions, each considered on a case-by-case basis, to ensure accuracy of the system.

Flare management important for reduce emissions (Nigeria’s fight against gas flaring)  

Under current Nigerian law, companies refining oil and gas must pay a ‘tax’ for flared gas, to encourage an overall reduction in flaring, underlining the importance of Fluenta’s accurate, trustworthy flare measurement and management.

According to Radek Kurkowski, director at Fluenta, flare gas measurement and control is vital to ensure compliance with environmental regulations and to help identify potential safety hazards. This is especially true at a plant on this never-before-seen scale and with the world’s largest flare pipe.

“Delivering this solution meant some close work with our local partner and the client project team, and we are delighted with the end result, which will support bringing energy security to Nigeria and the wider Africa region. Our team used a range of state-of-the-art technology, adapted meter software and special pipe gaskets and ball valves to deliver the pipe flare gas measurement solution,” says Kurkowski.

Fluenta has deep experience of working in Africa. In 2017, the company was approached by an International Oil Company (IOC) working in Nigeria, who were looking for a reliable flare measurement solution.

Fluenta developed bespoke solutions in response to the IOC’s requirements, which were installed in 2019. Since then, the IOC has ordered an additional 32 Fluenta flare measurement meters. Fluenta has now been awarded preferred supplier status and all flare gas flowmeters on the IOC’s assets have been replaced (or are in the replacement process) with the Fluenta solution.

Fluenta will be speaking further on the challenges of combustion efficiency and industry challenges to track methane emissions from flaring at NiHMEC (Nigeria Hydrocarbon Measurement Conference) (https://NiHMEC.com/) taking place 4-5 October in Lagos, Nigeria.

Nigeria’s fight against gas flaring

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Nigeria’s fight against gas flaring

 

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