等离子体烟气脱硫技术现状与关键问题讨论

Discussions on Key Problems or plasma-Catalysis Flue Gas Desulfurization

介绍了ＳＯ２的３条去除路径，高能电子的解离还原路径；自由基的氧化路径；以及与氨的热化学反应路径。提出ＳＯ２浓度测试要先去氨及ＮＯｘ测试先去ＳＯ２的方案。分析了温度、氨量、烟气组分及供电情况对ＳＯ２去除的影响。认为ＮＯ及硫酸气溶胶的存在促进ＳＯ２去除的观点是错误的。本文还讨论了该技术工业应用中诸如降低能耗、余氨处理和产物收集等关键问题。讨论了放电对ＳＯ２去除的作用和脱硫与除尘结合问题。最后提出利用氨与等离子体的协同作用，以热化学反应为主路径，以等离子体活化反应为补充的脱硫思路。

hree approaches for so, removal were summarized: high energic electron bombardment induced direct dissociation,oxidation by free radicals generated in corona, and thermo-chemical reaction with ammonia. A new way put forward by the author is discussed here of removing ammonia for SO2 analysis. The performance of this method for flue gas is compared with that for simulated model gas. The differences resulted from gas comPOSition were stressed. Other factors such as temperature, dose of ammonia,puled energization conditions were also discussed which affect the Performance the most. Some incorrect conclutions in preciously published papers from different authors were examined. Some existing key problems which have to be solved for the commertial aPPlication also disscussed, including energy consumption, ammonia slip and production collection. Feasibility Of combination with ESP was also concerned too. It was concluded that the key problem of this method is how to oxidize ammonia sulfite effectively by utilization Of oxidizing environment generated by corona discharge with aims to solve simultaneously both problems of high energy consumption and ammonia slip.