【作者】 吕涛；

【导师】 栾涛；

【作者基本信息】 山东大学 ， 工程热物理， 2012， 硕士

【摘要】 SCR脱硝技术是目前用于固定源脱氮的首选工艺,这一趋势在今后很长一段时间后仍将保持下去。目前我国燃煤电厂所使用的催化剂大都需要进口或者引用国外技术,而SCR催化剂的初装成本和更换费用都很高,这就加重了我国燃煤电厂的经济负担,制约了我国经济的发展,因此,研究和开发拥有自主知识产权的SCR催化剂对我国显得尤为重要,本文对课题组所研发的V-W-Mo/TiO2系催化剂进行了以下研究工作：首先,在课题组已经制得的工业纯SCR催化剂基础上,进一步改良配方,并分析了W元素、TiO2载体、水质、焙烧温度等因素对催化剂脱硝活性的影响,完善了工业纯配方。其次,重点研究了课题组制得的工业纯催化剂抵抗SO2中毒能力,分析了W元素、TiO2载体、水质、焙烧温度、不同SO2浓度等因素对制得的催化剂样品抵抗SO2活性抑制作用的影响,并对SO2活性抑制后的催化剂样品进行了热再生处理,初步探讨了了催化剂再生问题。再次,依托黄台电厂的中试实验平台,分析了在该平台中使用了半年和一年的催化剂样品的脱硝效率及SO2氧化率变化,探讨了在催化剂使用中应注意的堵灰问题。最后,借助XRD、 SEM、热重等表征分析,从催化剂的微观结构及物质构成角度解释了实验过程中出现的诸多现象。更多还原

【Abstract】 SCR-DeNOx technology is currently the preferred method used for statio-nary sources denitrification, and this trend will remain down for a long time in the future. The catalyst used in coal-fired power plants mostly need to import or in-troduce to foreign technology.But the high initial installation costs of the SCR catalyst and replacement costs add the huge economic burden to our coal-fired power plants.All of these have limited China’s economic development. Therefore, research and development of the independent intellectual property rights in SCR catalyst is particularly important to our country, This article do the main work in V-W-Mo/TiO2catalysts as follows:First of all, on the basis of technical grade SCR catalyst which our group has been obtained, do more analysis of the impact of W elements, TiO2, water quality, calcination temperature and other factors on the catalytic denitration activity.Try to improve the technical grade SCR catalyst formula.Secondly, the focus of this article is mainly on the catalyst’s resistance to SO2poisoning.Analyze the effert of W elements, TiO2, water quality, the calcina-tion temperature, different concentration of SO2for the resistance SO2poisoning. Try to slove problem the catalyst regeneration by heat.Third, relying on test platform in Huang Tai plant, analyze the chang of the denitration efficiency and the SO2oxidation rate of the catalyst samples, which have used for six months and one year.And note the ash fouling problems in use.Finally, with the help of XRD, SEM, TGA to explain phenomena in the ex-perimental process from the view of the microscopic structure and material of the catalyst.更多还原