液相氧化吸收法同时脱硫脱硝技术的研究进展

Research Progress of Oxidation & Absorption Technology for Simultaneous Desulfurization and Denitrification in Aqueous Solution

煤燃烧过程中排放的SO2、NOx等是环境污染的主要因素。目前,湿法脱硫技术在我国已广泛应用,在此基础上开发的湿法脱硫协同脱硝技术具有重要意义。重点介绍了国内外几种典型的液相氧化吸收一体化脱硫脱硝技术,包括Na Cl O2法、H2O2法、KMn O4法、Na2S2O8法等。综述了各种方法的研究进展,评述了其各自的特点,并指出上述方法在能耗、污染、成本等方面的问题,有待工业试验的进一步验证。

The emissions of SO2 and NOx from the process of the combustion of the coal have seriously endangered both human health and the environment, so, the restriction emission including SO2 and NOx, which have been run by the government is becoming more strictly nowadays. From the basis of the technology of desulphurization in aqueous solution, which applies extensively in our country, there will be a great prospect and significance in developing the corresponding way of denitrification in wet process. The paper mainly describes several typical technologies of oxidation ＆ assimilation technology for simultaneous desulfurization and denitrification in wet process of the world, including NaC102 method, H202 method, KMnO4 method and Na2S2Os method. Also, the research status and characteristics of each method are summarized. And the prospects of the research and application of aqueous oxidation ＆ assimilation technology of simultaneous desulfurization and denitrification of the future are introduced. Finally, problems of these methods in aspects such as energy consumption, environmental pollution and costs are analyzed.