污染物超临界水氧化技术防腐蚀研究进展  

Progress in Anti-corrosion Investigation for the SCWO of Pollutants

作　　者：王光伟 陈鸿珍[2] Wang Guangwei;Chen Hongzhen(Zunyi Normal University,Zunyi 563006;Chongqing Institute of Green and Intelligent Technology(CIGIT),Chinese Academy of Sciences,Chongqing 400714,China)

机构地区：[1]遵义师范学院,贵州遵义563006 [2]中国科学院重庆绿色智能技术研究院,重庆400714

出　　处：《广东化工》2024年第1期80-82,97,共4页Guangdong Chemical Industry

基　　金：贵州省自然科学基金重点项目(黔科合基础[2019]1461号)。

摘　　要：超临界水氧化(SCWO)技术以超临界水(SCW)为介质,将有机污染物深度降解为CO_(2)、H_(2)O和N_(2)以及无机盐等小分子化合物,具有反应快、降解彻底,无二次污染等明显优势,被誉为最有前途的污染物末端处理技术之一。然而,由于有机污染物氧化过程及中间产物复杂,使得设备工况环境苛刻且变化范围大,长时间运行极易遭受严重的腐蚀。为了提升污染物超临界水氧化系统的防腐蚀性能,使其实现规模化应用,科学家们通过耐腐蚀反应器研发,工程材料(金属、合金、陶瓷等)腐蚀过程和机理研究,卓有成效的工艺过程优化,强化了超临界水氧化系统中腐蚀发生、发展的认识,对防腐蚀技术的研发具有显著的促进作用,并已取得不少创新性成果。这些成果为开发新型防腐蚀超临界水氧化设备积累了丰富的基础数据,对其处理效果和效率提升,能量及运行成本核算等工业化设计提供了线索。Using supercritical water(SCW)as its reaction medium,supercritical water oxidation(SCWO)technology strongly oxidizes organic pollutants to small molecules such as CO_(2),H_(2)O,N_(2),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.

关 键 词：超临界水氧化 超临界水 腐蚀 

分 类 号：X705[环境科学与工程—环境工程]