烟气脱硫脱硝的方案

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2024/11/16,燃煤烟气同时脱硫脱硝技术,背景,由于大量排放含有,SO,2,、,NOx,的烟气引起的酸雨等环境问题日益严重，解决二氧化硫和氮氧化物污染刻不容缓。,需要低成本、适合我国国情的脱硫脱硝方法。,65-95%,C,2-7%,H,25%,O,90%,）,华东理工大学,肖文德,专利号：,01105698.3,乙二铵合钴,(),络合催化,NO,1.,NO(g),转化为,NO(aq),NO,与,Co(en),2,2+,反应,:,NO(g)+Co(en),2,2+,+OH,-,Co(en)(NO)OH,+,+en,2.,NO,被氧化,NO,2,Co(en)(NO)OH,+,+,O,Co(en)(NO,2,)OH,+,NO(g),NO(aq),NO,2,3.,在碱性溶液中，,OH,-,会取代络合物中的,NO,2,：,Co(en),(NO,2,)OH,+,+OH,-,Co(en),(OH),2,+NO,2,-,+NO,3,-,+H,2,O,2NO,2,+2OH,-,NO,2,-,+NO,3,-,+H,2,O,4.,催化剂再生,Co(en),(OH),2,+en,Co(en),2,2+,+2OH,-,5.,总反应方程式为：,2NO+O,2,+2OH,-,NO,2,-,+NO,3,-,+H,2,O,总之：,O,将,NO,氧化,NO,2,在碱性溶液中，,NO,2,NO,2,-,+NO,3,-,en,能保持,Co(en),2,2+,离子不断循环,SO,2,：石灰,/,石膏法脱除,SO,2,+Ca(,OH,),2,CaS,O,3,+,H,2,O,研究趋势,技术上：改进,FGD,和,SCR,组合工艺，降低操作费用。,学术上：除了化学催化的改进，采用物理的、生物的技术。,高能电子活化氧化技术,液膜法,生物法,山西煤化所刘振宇等人对于脱硫脱硝，选用的催化剂为：以,Al,2,O,3,、活性炭,(AC),为载体负载各种金属氧化物,CuO,，,V,2,O,5,，采用的是,SCR,法还原,NOx,路线。,华东理工大学肖文德等人，以,Al,2,O,3,为载体,负载各种金属氧化物,NiO,、,Co,3,O,4,的催化剂上，研究氧化,NO,为,NO,2,的规律；并考察,SO,2,对其的影响。,设想,多联产能源系统中分离,SO,2,、,NOx,；,用天然气中的,CH,4,、,H,2,等还原,SO,2,，从产物中得到,H,2,S,；,利用,H,2,S,来还原,NOx,希望实现：,H,2,S+NO,N,2,+S+,H,2,O,多联产能源系统,总结,工业上现行的脱硫脱硝工艺,乙二铵合钴,(),络合催化,NO,多联产中脱硫脱硝的设想,参考文献和资料,1,.,钟秦，燃煤烟气脱硫脱硝工程实例,北京,化学工业出版社,2002.,2,.,姚强，洁净煤技术,北京,化学工业出版社,2005.,Zhao Biying,Jiang De-en.Fuel.2002,81(11):1565,The NOXSO process.Applied Catalysis B:Environmental.1994,，,5,（,1,）,:N7,Snip O C,，,Woods M,，,Korbee R,，,et al.Regenerative removal of SO,2,and NO,x,for a 150 MWe power plant in an interconnected fluidized bed facility.Chemical Engineering Science.1996,，,51,（,10,）：,2021,Zhao Biying,，,Jiang De-en,，,Xie Youchang.Dispersion of Na,2,CO,3,on Al,2,O,3,and the threshold effect in flue-gas desulfurization.Fuel.2002,，,81,（,11,）：,1565,Blumrich S,，,Engler B.The DESONOX/REDOX-process for flue gas cleaning:A flue gas purification process for the simultaneous removal of NOx and SO,2,resp.CO and UHC.Catalysis Today.1993,，,17,（,1,）：,301,US Department of Energy.DOE/NETL-2000/1125.SNOX,TM,Flue Gas Cleaning Demonstration:Project:A DOE Assessment.2000.13,US Department of Energy.DOE/FE-0459-2.Clean Coal Technology Programs:Completed Projects 2003.Clean Coal Today Newsletter.2003,，,(2),：,72,Chang S G.Novel Catalytic Processes for Acid Gas Treatment in the Natural Gas Industry and Coal-fired Power Plants.Thirteenth U.S.-Korea Joint Workshop on Energy and Environment.Reno,Nevada.1999.20,谢谢！,