SOLETAIR results published


The new research paper presents the main results of the SOLETAIR campaign and discusses on the future prospects of the SOLETAIR concept.

The most recent paper from our team summarizes the work on hydrocarbon production directly from carbon dioxide and water, by solar energy. The SOLETAIR-pilot plant included direct air capture (DAC) of carbon dioxide, hydrogen production by water electrolysis, and two-step synthesis bench-scale units that operated using grid-connected solar photovoltaic (PV) electricity. In addition, co-feeding of hydrogen and carbon monoxide from gas bundles were utilized to enable scaling between units. This pilot plant achieved a total operating time of approx. 300 h with a combined production of oil and wax of 6.2 kg per day. The mass and energy balances in integration of the units were studied. According to the experiments and studies, potential and bottlenecks to improve the individual units and their integration were found. Finally, a conceptual Power-to-X plant was presented, which can achieve energy and carbon efficiencies of 47% and 94%, respectively, considering liquid and solid hydrocarbons as products.

The article is collaboration work of VTT, LUT and INERATEC.

Authors: Vidal Vazquez, F., Koponen, J., Ruuskanen, V., Bajamundi, C., Kosonen, A., Simell, P., Ahola, J., Frilund, C., Elfving, J., Reinikainen, M., Heikkinen, N., Kauppinen, J., Piermartini, P.

Title: Power-to-X technology using renewable electricity and carbon dioxide from ambient air: SOLETAIR proof-of-concept and improved process concept

Journal: Journal of CO2 Utilization, Volume 28, December 2018, Pages 235 – 246


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