Operating characteristics of a transpiring-wall SCWO reactor with a hydrothermal flame as internal heat source

摘要: Abstract A novel supercritical water oxidation (SCWO) system with a transpiring-wall reactor (TWR) containing hydrothermal flame as internal heat source has been investigated. This configuration may overcome the problems of corrosion and plugging reaction vessels other components. In TWR, wall contact media is prevented by fluid dynamical means. Subcritical permanently flows through porous, non-load-bearing elements forms “film” on inner wall. Precipitated salt particles do not reach because they are either re-dissolved in this film or swept away transpiring water. The waste reaches temperature without any contact, i.e., mixing combustion products flame. present work, apparatus design, processing features, experimental results presented. Tests salt-free water–methanol mixtures have conducted at 250 bar. influence intensity (i.e., mass flux) transpiration performance examined. temperatures near remain subcritical which quantitative measure for protection from adherence. Methanol conversions higher than 99% were obtained even comparatively low (125–250  ° C). At typical operating conditions, flow ratio between total core around 65%. Further, it was found that natural convection effects negligible SCWO.