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Saudi Aramco

Saudi Aramco (Arabic: أرامكو السعودية‎ ʾArāmkū s-Saʿūdiyyah), officially the Saudi Arabian Oil Company (formerly Arabian-American Oil Company), is a Saudi Arabian public petroleum and natural gas company based in Dhahran.[4][5]

As of 2020, it is one of the largest companies in the world by revenue.[6] Saudi Aramco has both the world’s second-largest proven crude oil reserves, at more than 270 billion barrels (43 billion cubic metres),[7] and largest daily oil production of all oil producing companies.[8][9]

Saudi Aramco operates the world’s largest single hydrocarbon network, the Master Gas System. Its 2013 crude oil production total was 3.4 billion barrels (540 million cubic metres), and it manages over one hundred oil and gas fields in Saudi Arabia, including 288.4 trillion standard cubic feet (scf) of natural gas reserves. Saudi Aramco operates the Ghawar Field, the world’s largest onshore oil field, and the Safaniya Field, the world’s largest offshore oil field.[10]

On 11 December 2019, the company’s shares commenced trading on the Tadawul stock exchange. The shares rose to 35.2 Saudi riyals, giving it a market capitalisation of about US$1.88 trillion,[11] and surpassed the US$2 trillion mark on the second day of trading.[12] In the 2020 Forbes Global 2000, Saudi Aramco was ranked as the 5th-largest public company in the world.[13] In March 2021, Saudi Aramco announced that earnings in 2020 fell by nearly 45% compared with 2019, as lockdowns around the world following the COVID-19 pandemic curbed demand for oil.[14]

Source: Saudi Aramco, (last visited Mar. 28, 2021).

Capturing carbon on the move

Transport technologies

We’re reducing the environmental impact of the internal combustion engine.

  • Our technology has the potential to provide lower carbon transport for everyone
  • We began working on mobile carbon capture in 2010
  • Capturing the CO2 at source so it never reaches the air
  • Successfully demonstrated in cars and pickups, being validated in trucks; our next focus will be marine transport

For over 140 years, the internal combustion engine has been the heartbeat of our planet, moving billions of people, goods, and materials across the world in cars, trucks, ships, planes and trains. And the future will be no different, as more countries globally move themselves out of poverty and consume more energy.

Current estimates predict that there will be 1.7 billion vehicles using internal combustion engines by 2040. This clearly poses huge challenges for both our natural resources and the environment – particularly in terms of carbon dioxide (CO2) emissions and impending targets on carbon neutrality.

So how do you develop practical solutions for reducing emissions, at a reasonable cost, and with only minimal impact on vehicle performance?

More efficient engines are just the start

There are several ways to increase the efficiency of a vehicle.

You can reduce its weight, improve the aerodynamics so there is less drag, decrease engine friction, and so on. Each of these can make a difference, but our ambition was to take a much larger leap forwards in terms of CO2 reduction.

An idea takes shape

The technology to capture CO2 at source has existed for a while in industrial settings such as power plants. However, capturing it on the move poses a range of complex challenges; from the physical confinements and relative lack of space on board a vehicle, through to dealing with external influences such as variable air flows as it moves.

An added complication is how to generate the additional energy needed to separate the CO2 from the other exhaust gases. Especially as burning extra fuel would cost the driver more money, and would in turn emit more CO2.

One solution lies in reusing existing “waste” energy

Engines typically convert between 25-40% of the energy in the fuel into propulsion. The rest is lost as heat through the radiator and exhaust. Our breakthrough was developing an energy recovery system that could take that wasted heat and convert it into energy to power both the CO2 capture and the compressor units.

Our carbon capture system works by taking the exhaust gases and bringing them into contact with a solvent to capture the CO2, emitting nitrogen, water vapour, and any remaining CO2. Then we compress the CO2 and store it safely in a tank on board the vehicle. 

The Four Rs

Removing CO2 from the atmosphere is one of the four “Rs” (alongside reducing, reusing and recycling), helping to restore the human-earth balance as part of the circular carbon economy.

Once the CO2 has been captured, it has to be safely unloaded and then moved by truck or pipeline. Depending on the local conditions, it can then be sequestered into the ground, or used in a variety of different commercial and industrial applications.

For instance, our innovative Converge® technology can convert CO2 into high-value polymers, such as adhesives, coatings, elastomers, and sealants. We have also developed innovative ways to convert CO2 back into fuels using renewable energies, and even using it to help cure cement.

Developing a feasibility prototype

We began in 2010, exploring different approaches to capturing CO2, including: liquid absorption, solid sorbents, cryogenic, membranes and oxy-combustion. For the feasibility prototype we decided to use a solid sorbent which came with some disadvantages in terms of its size and inflexibility. However, in 2011, after a year of development, we successfully integrated our carbon capture system into a Ford F-250 pickup truck, capturing 10% of the CO2 emissions.

Our instincts had been proven correct, and now the challenge was to make the system smaller and more efficient.

The next phase: passenger cars

Perhaps somewhat counter-intuitively, smaller engines are more inefficient than larger ones. They waste more heat, which means more energy is available to capture and compress the CO2.

In 2013, we switched to a liquid solvent (potassium carbonate solution), enabling us to shrink the whole system to just 1/8 of its original size, and integrate the majority of it underneath the chassis of a Toyota Camry. The result was an impressive tripling in performance – capturing 30% of the CO2 emissions while the car was being driven.

Heavy-duty applications

We also realised the potential our mobile carbon capture technology has for the freight industry, especially as trucks usually return to a depot at the end of their journey, which could make unloading the stored CO2 easier.

So in 2019 we began work on integrating it into a class 8 Volvo heavy-duty truck, using the same principles as our passenger car prototype, but with a much larger system integrated between the cab and trailer. We developed a novel solvent system based on amino acids, and used turbo-compounding to recover energy from the engine. The results were our best to date – capturing 40% of the CO2 emissions from the truck.

Reimagining the freight industry

Currently, over a third of all transport CO2 emissions come from road freight.

Imagine if every heavy-duty truck in the world had our mobile carbon capture technology on board. We could reduce CO2 emissions by up to 708 million tons per year – that’s about the same impact as planting 120 billion new trees.

The future – capturing carbon at sea

Marine transportation is estimated to be responsible for 2.1% of all global CO2 emissions. While ships consume thousands of tons more fuel than cars, the science behind the carbon capture technology is the same – it’s all about scale.

The goal of the International Maritime Organization (IMO) is to reduce greenhouse gas emissions by at least 50% by 2050, compared to 2008 levels. And we’ve just started working with our industry partners to explore ways to adapt the technology for deployment on large ships.

Source: loaded 28.03.2021

For detailed photos and illustration refer to the original website.

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