岱海电厂600MW机组脱硝系统改造及进度监理研究

发布时间：2018-06-17 23:21

本文选题：脱硝系统 + 改造　；参考：《华北电力大学(北京)》2016年硕士论文

【摘要】：酸雨和化学烟雾产生的一个主要原因是氮氧化物。[1]为适应新的环保政策的要求,国内已投产的燃煤发电厂进行脱硝系统改造是改善当地环境、积极承担社会责任的外部与自身发展双重需要。本文以岱海电厂一期600MW机组脱硝系统改造工程实际为依托,研究的是国内已投产且未配套设计脱硝系统的燃煤电厂,为适应新的环保政策要求进行脱硝系统改造时技术路线选择、技术方案的设计、脱硝系统改造进度与机组大修改造进度的协调控制。[2]做到脱硝改造完成后氮氧化物排放指标能充分满足国家及地方环保政策的要求并具有一定的领先性,同时脱硝改造进度又能与机组大修进度协调进行,脱硝系统在机组大修并网后同步投运。本论文由五个部分组成,第一部分介绍本论文的写作背景、研究内容以及国内外脱硝项目的技术特点、管理现状,给出了论文的研究目的和方向。第二部分通过对岱海电厂锅炉系统设备现状评估、摸底试验结果分析,同时结合国内外脱硝改造主要技术路线的对比分析,确定岱海电厂脱硝改造技术路线为采取LNB+SCR综合脱硝技术路线。第三部分通过对岱海电厂脱硝系统改造中工程总体布置、低氮燃烧器改造、SCR改造方案进行详细比对论证,最终确定各改造方案中的系统配置、系统参数、设备选型。第四部分首先简单介绍了设备工程进度控制基本原理、网络计划技术等,为后续的研究工作奠定了理论基础。利用双代号网络图对机组大修与脱硝系统改造进度进行比对分析,提出两者在进度控制中存在的问题。利用网络计划技术对脱硝系统改造进度进行优化,最终实现脱硝系统改造进度与机组大修进度的协调控制。第五部分给出了论文的结论和下一步的展望。通过科学的技术改造方案研究论证以及合理的施工进度的优化控制,岱海电厂脱硝改造工程得以和机组大修同步完成,改造效果良好。岱海电厂一期2*600MW燃煤机组可年减排氮氧化物约11444吨,具有良好的节能减排效果和社会效益,同时脱硝装置投产后每年可获得4800万元的上网电价补贴。
[Abstract]:One of the main reasons for the production of acid rain and chemical smog is that the nitrogen oxide.[1] is required to adapt to the new environmental protection policy. The transformation of the denitrification system in the coal-fired power plants, which has been put into production at home, is to improve the local environment and actively undertake the dual needs of the external and self development of the social responsibility. In order to adapt to the new environmental protection policy, the technical route selection, the design of technical scheme, the coordinated control of the revamping progress of the denitrification system and the large modification of the unit.[2] achieve the nitrogen removal after the transformation of nitrite. The oxide emission index can fully meet the requirements of the national and local environmental protection policies and has a certain lead. At the same time, the schedule of denitrification transformation can be coordinated with the unit repair schedule. The denitrification system is synchronized to the network after the unit overhaul and the network. This paper is composed of five parts. Part 1 introduces the writing background and research content of this paper. As well as the technical characteristics and management status of the denitrification project at home and abroad, the purpose and direction of the research are given. The second part, through the assessment of the current situation of the boiler system equipment in the DAI HAI power plant, the analysis of the experimental results, and the comparison and analysis of the main technical routes of the denitrification transformation at home and abroad, determines the technical route of the denitrification and transformation of the DAI HAI power plant. The LNB+SCR comprehensive denitrification technical route is adopted. The third part, through the detailed comparison and demonstration of the overall layout of the project in the transformation of the denitrification system in the DAI HAI power plant, the transformation of the low nitrogen burner and the SCR transformation scheme, finally determines the system configuration, system parameters and equipment selection in the reform schemes. The fourth part introduces the progress control of the equipment engineering in a simple way. The basic principle of the system and the network planning technology have laid a theoretical foundation for the follow-up research work. By comparing and analyzing the progress of the unit repair and denitrification system transformation with the double code network diagram, the problems existing in the progress control are put forward. The network planning technology is used to optimize the progress of the denitrification system and finally realize the denitrification. The fifth part gives the conclusion of the paper and the prospect of the next step. Through the scientific technical transformation scheme research and demonstration and the reasonable control of the construction progress, the denitrification transformation project of the DAI HAI power plant is completed synchronously with the unit overhaul, and the transformation effect is good. The 2*600MW coal-fired unit can reduce the annual emission of nitrogen oxides by about 11444 tons, which has a good effect on energy saving and emission reduction and social benefits. At the same time, the denitrification device can get 48 million yuan per year after the operation.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：X773

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