Abstract
The corrosion of reactor and salt precipitation are two critical obstacles that inhibiting the development of supercritical water oxidation (SCWO) in to a viable industrial process. A new design of double wall reactor has been developed in which SCWO reaction take place inside an inner tube (alumina or titanium, micro porous). The high pressure air layer between inner surface of reactor and surface of tube could prevent non-soluble materials, corrosion ingredients and inorganic salt depositing and attaching to inner surface, thus critical problems have been overcome. The new reactor performance was evaluated by processing sewage sludge from BeiBei waste water treatment plant. There were no salt plugging or corrosion observed in reactor after one month operation.
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