Interpretation of the Rationale for Feed Modification in SCWO Systems

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Abstract
Supercritical water oxidation (SCWO) is a technology which can effectively destroy civilian and military wastes by oxidation in water at high temperature and pressure (T ≈ 550 − 650°C, 250 bar). Surmounting the problems of severe degradation of the materials of construction is, however, a pivotal issue in the development of scaled‐up systems. High‐nickel alloys are important for severe service; however, results indicate they will not survive certain SCWO environments. Although exotic liners such as platinum are currently promoted as a solution to aggressive conditions, this paper provides evidence suggesting it may ultimately be possible to use more conventional materials.

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