Progress in Anti-corrosion Investigation for the SCWO of Pollutants
Using supercritical water(SCW)as its reaction medium,supercritical water oxidation(SCWO)technology strongly oxidizes organic pollutants to small molecules such as CO2,H2O,N2,and inorganic salts,it is recognized as one of the most promising terminal routes for the pollutants due to its advantages of rapid oxidation,complete degradation,no secondary pollution,etc.However,complexity caused by the oxidation processes and intermediate products make the set-ups have harsh and widely-changed operational environments,as a result,they are prone to heavy corrosions as they long-termly operate.To improve the corrosion resistance of the SCWO system for its large scaled applications in the future,researchers deepen their knowledge of the corrosion occurrence and development in a SCWO system by the development of reactors,corrosion processes and mechanisms study of engineering materials(metal,alloy,ceramics,etc.),and effective optimization of techniques,resulting in great boosts of corrosion resistant techniques development and lots of novel research achievements.These results will not only accumulate basic data for the development of new anti-corrosive SCWO equipment,but also supply references for its treatment improvement and energy(cost)accounting in an industrial scale.
Supercritical water oxidation(SCWO)Supercritical water(SCW)corrosion
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