催化烟气脱硫脱硝技术应用研究

发布时间：2018-06-05 09:32

本文选题：SNCR + WGS　；参考：《东北石油大学》2017年硕士论文

【摘要】：全球环境日益恶化,酸雨、雾霾已成为各国关注的焦点问题,随着工业的发展,污染物的排放如不得到妥善治理,环境污染将会加剧。其中二氧化硫、氮氧化物是污染大气的重要因素,为了减少二氧化硫、氮氧化物的排放量,各国皆制定相应标准控制污染物排放,中国环保部2012年12月5日正式发布中国第一部综合性大气污染防治规划——《重点区域大气污染防治“十二五”规划》,明确提出控制二氧化硫、氮氧化物等污染物的排放。国内外已陆续进行了装置的脱硫脱硝的改造,发达国家在上个世纪60年代已开始研究相关技术,国内在这方面的研究起步较晚,且大多数为引进国外技术。本文以催化装置研究对象,针对该装置烟气排放超标的问题进行研究,分析二氧化硫、氮氧化物的来源、生成机理,介绍国内外主流的脱硫脱硝工艺,对比可操作性、经济性、效率等因素,选择合适的脱硫脱硝工艺,即WGS+SNCR工艺,分析该工艺的技术特点和影响因素,发现并解决该技术应用是遇到的问题,对催化装置锅炉进行温度场模拟计算,确定了对催化装置锅炉进行改造的部位,对催化装置进行工艺设计、设备改造,投入运行后对比改造前后数据,二氧化硫、氮氧化物等污染物均可达标排放,提出合理的运行参数,并提出该方案的局限性。
[Abstract]:The global environment is deteriorating day by day, acid rain, haze has become the focus of attention of all countries. With the development of industry, the discharge of pollutants will be aggravated if the discharge of pollutants is not properly treated. Sulfur dioxide and nitrogen oxide are important factors to pollute the atmosphere. In order to reduce the emission of sulfur dioxide and nitrogen oxide, all countries have formulated corresponding standards to control the emission of pollutants. On December 5, 2012, the Ministry of Environmental Protection of China officially issued the first comprehensive plan for the prevention and control of air pollution in China-the 12th Five-Year Plan for the Prevention and Control of Air pollution in key regions, with a clear proposal to control the emission of pollutants such as sulphur dioxide and nitrogen oxides. The desulphurization and denitrification revamp has been carried out at home and abroad. The developed countries began to study the related technologies in the 1960s, and the domestic research on this aspect started late, and most of them were imported from abroad. In this paper, the research object of catalytic unit is studied, the source and mechanism of sulfur dioxide and nitrogen oxide are analyzed, and the mainstream desulfurization and denitrification technology at home and abroad are introduced. The suitable desulfurization and denitrification process, that is, WGS SNCR process, is selected, the technical characteristics and influencing factors of the process are analyzed, the problems encountered in the application of the technology are found out and solved, and the temperature field of the catalytic unit boiler is simulated and calculated. The position of reforming the boiler of the catalytic unit is determined. The process design, the equipment modification and the comparison of the data before and after the retrofit are carried out. The pollutants such as sulfur dioxide and nitrogen oxide can all be discharged up to the standard. The reasonable operation parameters are put forward, and the limitation of this scheme is put forward.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X701

【相似文献】