海勃灣電廠330MW燃煤機組SCR脫硝技術(shù)改造
[Abstract]:The combustion of fossil fuels provides a great impetus for social progress, but also results in the emission of large amounts of pollutants, including nitrogen oxides (NO_x). As a large coal producer, the coal consumption of electric power production in China accounts for about 50% of the total coal consumption in China, which makes the emission of nitrogen oxides increase proportionally with the increase of electricity generation. As a result, the emission of no _ x has brought an increasingly serious threat to the atmospheric environment. With the improvement of people's living conditions, the awareness of environmental protection is gradually raised. In order to improve the quality of atmospheric environment, it is necessary to control the emission of NO_x, so it is of great engineering and practical significance to study the denitrification system in power plant. There is one 330MW boiler for unit 5 and unit 6 in Haibo Bay Power Plant. According to the requirement of national environmental protection policy (GB13223-2011), the nitrogen oxide emission concentration of the two boilers must be reduced to less than 100mg/Nm~3. Therefore, SCR flue gas denitrification was adopted in two units of the plant, and the revamping works of the two units were completed by December 2013 and April 2014, respectively. As a state-owned power generation enterprise, it is necessary to carry out the corresponding flue gas denitrification project for the above two units in order to respond to the request of the superior, to fulfill the responsibility of the enterprise to the society, or to consider the sustainable development of the enterprise. However, there are many kinds of denitrification technology nowadays, which makes it necessary to choose a technical scheme suitable for boiler operation and meet the requirements of system transformation. Based on the research goal of reducing NO_x emission of Unit 5 boiler of Haibo Bay Power Plant, combined with the status quo of boiler operation, fuel index, equipment upgrade and so on, the project of flue gas denitrification is summarized, and the results of retrofit are analyzed. So it can be used for reference for similar projects in the future.
【學位授予單位】:華北電力大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM621
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