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Comment Sustainability

Trio of Belgian firms to develop “e-methane” project

By Mary Page Bailey |

Mining company Carmeuse (Louvain-la-Neuve, Belgium), ENGIE (Brussels, Belgium) and John Cockerill (Seraing, Belgium) have signed a Joint Development Agreement for an innovative Carbon Capture and Utilization (CCU) project in the Wallonia region of Belgium. This project will concentrate CO2 from an innovative type of lime kiln, combine it with green hydrogen and produce “e-methane,” a renewable gas that can be injected in the gas grid or used in transport or in the industry.

The green hydrogen will be produced by a 75-MW electrolyzer plant powered by green electricity. This project is the largest of its kind in the world. It opens new routes for significant carbon emission reductions in Europe and the world.

The project targets carbon emission reductions by using the CO2 generated during the lime production process into e-methane (methanation). The project will demonstrate at industrial scale a first-of-a-kind integrated process by up-scaling and combining available and prototype technologies, such as a new type of lime kiln, one of the world’s largest electrolyzers (75 MW) and green hydrogen.

The produced e-methane will be high-quality, suitable for injection into the national natural gas grid. This renewable e-methane can be used by industrial users or as an alternative fuel in the transport sector, thus allowing these sectors to decarbonize.

To achieve this, three large industrial players have joined forces to further develop the project:

  • Carmeuse will be responsible for the construction, commissioning and operation thenew type of lime kiln, which allows for a concentrated CO2 stream.
  • John Cockerill will be responsible for the design, engineering, construction and commissioning of a large electrolyzer plant (75 MW) at an ENGIE site in the region of Charleroi, with key elements manufactured by John Cockerill. •ENGIE will own and operate the electrolyser plant that will produce the green hydrogen. Storengy, ENGIE’s affiliate, will be in charge of the construction and operation of the methanation process.

The implementation of this project would make it possible to avoid more than 900,000 tons of CO2 emissions during the first 10 years. Moreover, it could enable future projects at larger scale in the lime-sector and replication in other CO2intensive industrial sectors. It could turn Wallonia and Belgium into a world leader in CCU-based renewable energy carrier technologies. The total investment cost for the project is over 150 million Euro. An application file for funding within the framework of the EU Innovation Fund and IPCEI (Important Project of Common European Interest) has been submitted and, subject to a successful outcome, the project implementation would start in 2022 to be operational in 2025.

Lime is a widely used material in the production of common building materials such as bricks and mortar, as well as a chemical feedstock for a variety of other processes including steel production and sugar refining. The chemical process of lime production generates CO2emissions which cannot be avoided by the use of renewable energies.

Carmeuse is developing an innovative process that will allow the production of lime with a concentrated CO2stream, combining both thecombustion related CO2and the process CO2that is released during the transformation of limestone into lime.

ENGIE will use renewable energy production capacity to feed a 75 MW electrolyzer built by John Cockerill to produce green hydrogen. Storengy will operate the biomethanation plant which will combine the green hydrogen with the concentrated CO

2to produce e-methane. This biological methanation will be implemented thanks to Electrochaea’s technology. As the e-methane will be considered as a renewable fuel, the project contributes to the transition towards carbon neutrality of the final user of the e-methane.

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