11.04.2013 • TopicsMANMAN Diesel & TurboAudi

Potential of Synthetic Methane on an Industrial Scale

While the change in energy policy is being discussed, MAN and Audi are creating facts. The vehicle manufacturer will produce and feed synthetic methane (Audi e-gas) into the public natural gas network starting summer 2013. The core component of the plant, which is being built in cooperation with equipment manufacturer SolarFuel, is a methanation reactor developed by MAN's Diesel & Turbo business.

Construction and production of the e-gas plant unit that is around 16 meters high done by MAN's specialists for chemical and physical reactors in Deggendorf, Germany. In December 2012, a heavy-duty transporter took the ready-for-use tower to the SolarFuel site in Werlte, which is 782 km away.
The ability to produce carbon neutral fuel from renewable electricity makes this facility special. Audi e-gas can be stored and transported with infrastructure currently available as it is nearly identical to fossil-based natural gas chemically speaking. As such, it can easily be distributed via the natural gas network as well as delivered to CNG stations.

"This order stresses once more our competence in building chemical apparatus with the aid of which synthetic fuel can be produced," said Dr. Josef Dachs, head of MAN Diesel & Turbo's site in Deggendorf. "Whether we are talking about the Pearl in Qatar, the largest gas-to-liquids plant in the world operated by Shell, or Audi's e-gas project in the Emsland: Our know-how is in demand worldwide when it comes to finding and providing solutions for the future's mobility."
At Audi's plant, electricity from wind or solar energy is converted into e-gas in two major steps. In the first, the electricity is used for electrolysis. This process splits water (H2O) molecules into oxygen (O2) and hydrogen (H2). The hydrogen then reacts with carbon dioxide (CO2), itself being a waste product from a nearby biogas plant, to become methane (CH4).

The dual electricity / gas principle of Audi's e-gas project is a practical example of how to make good use of the wind energy excess on stormy days when the existing German grid is insufficient to carry the load. The SolarFuel Werlte facility will generate enough CO2-neutral e-gas to power 1,500 CNG cars over 15,000 km every year.

 

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MAN Diesel & Turbo SE

Steinbrinkstr. 1
46145 Oberhausen
Germany

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