We propose a sulfur-resistant process in which a gaseous or liquid carbonaceous matter is converted into the Synthesis Gas in a presence of high-voltage cold-plasma (“GlidArc”) that assists the exothermal Partial Oxidation. This process is performed in our 0.6 to 2-Liter reactors using atmospheric air. The reactants are mixed at the reactor entry without use of vaporizers or nozzles. Our process is initiated in the discharges’ zone in presence of active electrons, ions, and radicals generated directly in the entering mixture. Then the partially reacted steam enters a post-plasma zone of the same reactor. This zone is filled with a metallic and/or mineral material. We found several solids that present some catalytic properties enhanced by high temperatures and active species generated in the cold plasma. Atmospheric pressure reforming is presently studied. This paper recalls our earlier tests with natural gas, propane, cyclohexane, heptane, toluene, various gasolines, diesel oils (including logistic ones), and the Rapeseed oil. New experiments are then presented on the reforming of heavy naphtha and an aviation fuel. The synthesis gas issued from the last one has been successfully converted into electric energy in an on-line inserted Solid Oxide fuel Cell. All tested feeds are totally reformed into Hydrogen, Carbon Monoxide and some Methane. Other components are Steam and Carbon Dioxide. All these products are diluted in Nitrogen coming from the air. No soot, coke or tars are produced even from highly aromatic liquids. The output Synthesis Gas power issued as the result of our tests can presently reach 11 kW (accounted as the Lower Heating Value of produced H2 + CO stream). Only 0.05–0.2 kW of electric power is necessary to drive such cold-plasma-assisted reformer. Up to 45 vol.% of H2 + CO mixture (dry basis) is produced in long runs. We obtain a better than 70% thermal efficiency of the process (defined as the output combustion enthalpy of H2 + CO at 25°C concerning the Lower Heating Value of the feed). However a large part of remaining percentage of the energy leaving the reformer (the sensitive heat and CH4 at 2–3 vol.% level) can be further reused in the high-temperature Fuel Cells.
- Nanotechnology Institute
Plasma-Catalytical Partial Oxidation of Various Carbonaceous Feeds Into Synthesis Gas
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Czernichowski, A, Czernichowski, P, & Wesolowska, K. "Plasma-Catalytical Partial Oxidation of Various Carbonaceous Feeds Into Synthesis Gas." Proceedings of the ASME 2004 2nd International Conference on Fuel Cell Science, Engineering and Technology. 2nd International Conference on Fuel Cell Science, Engineering and Technology. Rochester, New York, USA. June 14–16, 2004. pp. 669-676. ASME. https://doi.org/10.1115/FUELCELL2004-2537
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