SCR装置对锅炉烟风参数影响研究
发布时间：2018-10-08 17:12
【摘要】：随着氮氧化物排放污染越来越严重,国家已加大对其控制力度,并由此修改了环保标准,通过分析目前电厂氮氧化物排放控制的现状及面临的严峻形势,可见对烟气的脱硝非常有必要。而增设SCR装置将会对锅炉烟风参数带来一系列影响,故研究SCR装置对锅炉烟风参数的影响将对完成减排污染物的责任目标,改善环境,建设环保创新型的企业具有重要且深远的意义。本文通过查阅文献资料,先简要介绍了SCR法、SNCR法及组合SNCR+SCR法三种工艺的工作原理、脱硝效率、投资及运行成本,并进行优缺点比较及技术经济性分析。然后着重介绍了SCR脱硝技术,从系统布置、设计要点、主要设备、影响其性能的因素等几个方面进行了详细的论述。接着,探讨了加设SCR脱硝系统后对锅炉烟风参数产生的影响,对于主体设计基本完成后再补建SCR脱硝系统的改造,必须考虑新增装置的影响。最后,结合工程实践,以哈锅设计制造的扬子石化分公司热电厂的220t/h的高温高压燃煤锅炉SCR改造为例,通过详细的案例介绍将前述改造理论充分地运用到实际项目中,可见SCR改造非常具备实际操作意义。
[Abstract]:With the more and more serious nitrogen oxide emission pollution, the state has increased its control, and has revised the environmental protection standard, through the analysis of the current situation of power plant nitrogen oxide emission control and the grim situation. It can be seen that the denitrification of flue gas is very necessary. The addition of SCR device will bring a series of effects on the parameters of boiler flue gas, so the study of the influence of SCR device on the parameters of boiler flue gas will achieve the goal of reducing the emission of pollutants and improve the environment. It is of great significance to build an innovative enterprise for environmental protection. In this paper, the working principle, denitrification efficiency, investment and operation cost of SCR method and combined SNCR SCR process are briefly introduced, and the advantages and disadvantages are compared and analyzed. Then the technology of SCR denitrification is introduced in detail, including system layout, design essentials, main equipment, factors affecting its performance and so on. Then, the influence of adding SCR denitrification system on boiler flue gas parameters is discussed. The influence of new equipment must be considered for the reconstruction of SCR denitrification system after the main design is basically completed. Finally, combined with the engineering practice, taking the SCR transformation of the high-temperature and high-pressure coal-fired boiler of 220t/h of the Yangzi Petrochemical Branch Thermal Power Plant designed and manufactured by the Harbin Pot as an example, the above modification theory is fully applied to the actual project through the detailed case introduction. It can be seen that SCR transformation has practical significance.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：X773
本文编号：2257594
[Abstract]:With the more and more serious nitrogen oxide emission pollution, the state has increased its control, and has revised the environmental protection standard, through the analysis of the current situation of power plant nitrogen oxide emission control and the grim situation. It can be seen that the denitrification of flue gas is very necessary. The addition of SCR device will bring a series of effects on the parameters of boiler flue gas, so the study of the influence of SCR device on the parameters of boiler flue gas will achieve the goal of reducing the emission of pollutants and improve the environment. It is of great significance to build an innovative enterprise for environmental protection. In this paper, the working principle, denitrification efficiency, investment and operation cost of SCR method and combined SNCR SCR process are briefly introduced, and the advantages and disadvantages are compared and analyzed. Then the technology of SCR denitrification is introduced in detail, including system layout, design essentials, main equipment, factors affecting its performance and so on. Then, the influence of adding SCR denitrification system on boiler flue gas parameters is discussed. The influence of new equipment must be considered for the reconstruction of SCR denitrification system after the main design is basically completed. Finally, combined with the engineering practice, taking the SCR transformation of the high-temperature and high-pressure coal-fired boiler of 220t/h of the Yangzi Petrochemical Branch Thermal Power Plant designed and manufactured by the Harbin Pot as an example, the above modification theory is fully applied to the actual project through the detailed case introduction. It can be seen that SCR transformation has practical significance.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：X773
【参考文献】
相关期刊论文 前3条
1 介立勋;赵振宁;;利用SCR法控制燃煤电站NO_X的排放[J];华北电力技术;2007年01期
2 肖志均;刘慷;周建锋;谭效德;;阳城电厂选择性催化还原系统及工艺特点介绍[J];热力发电;2009年04期
3 魏宇;代伟伟;;选择性催化还原(SCR)技术在电站锅炉烟气脱硝改造工程中的应用[J];装备机械;2011年01期
，本文编号：2257594
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