Transport Processes in Reacting Hydrothermal Flames with Applications to Military Waste Destruction in Supercritical Water and Geotechnical Rock Excavation
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Supercritical water oxidation of recalcitrant compounds under a hydrothermal flame
Supercritical water oxidation (SCWO) is able to completely mineralize every kind of waste in residence times lower than one minute. Supercritical water oxidation in presence of hydrothermal flames can reduce residence times to the order of milliseconds. The most recalcitrant compounds in terms of difficulty to oxidation for the supercritical water oxidation are acetic acid and ammonia. The obje...
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The use of reactors working with a hydrothermal flame as a heat source contributes to overcome many of the challenges presented by supercritical water oxidation (SCWO). Injection of the reagents over a hydrothermal flame can avoid the reagents preheating as the feed can be injected into the reactor at room temperatures, avoiding plugging and corrosion problems in a preheating system. Also the k...
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Results are reported from recent tests where hydrothermal flames spontaneously ignited in a Supercritical Water Oxidation (SCWO) Test Cell. Hydrothermal flames are generally categorized as flames that occur when appropriate concentrations of fuel and oxidizer are present in supercritical water (SCW); i.e., water at conditions above its critical point (218 atm and 374 °C). A co-flow injector was...
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