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Methane electrolysis produces CO2-free H2 from liquified natural gas

On March 6 and 7 at International LNG Congress 2023, more than 350 companies will discuss key challenges of the LNG industry—from transportation and storage infrastructure to use as a fuel or by end users. Graforce will introduce methane electrolysis (plasmalysis)—a game changing technology, which converts LNG into H2. This allows large gas users to switch to clean-burning H2 without changing their energy supplier or method of transporting.

"We cannot do completely without fossil fuels yet. But the EU can still achieve its decarbonization targets if LNG, LPG or natural gas are no longer burned but converted into H2 and solid carbon with the help of green electricity and our H2 plants," said Dr. Jens Hanke, CTO of Graforce.

In the modular plasmalysis plants, a high-frequency plasma field, generated by renewable electricity, splits hydrocarbons such as methane into their molecular components: H2 and solid carbon. Compared to water electrolysis, plasmalysis requires only one-fifth the energy to produce the same amount of H2. A single 20-megawatt plant can convert about 70,000 metric tpy of LNG into H2 and save about 200,000 metric tons of CO2.

The H2 can be used for emission-free electricity and heat generation or in the chemical industry. Since the CO2 is sequestered in products over the long term, this technology is also the first market-ready alternative to carbon capture storage.

Cooperation for electricity-autonomous combined heat and power generation

In January 2023, Graforce entered a cooperation with Kawasaki Gas Turbine Europe. Within the plant solution, carbon-free H2 is produced from biomethane, natural gas, LNG or LPG. This is converted to electricity in Kawasaki's H2 gas turbine and reused in the plasmalysis to produce H2. Thus, CO2-free electricity and high-temperature heat is generated. Once started, the whole system requires no further electricity.

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