發(fā)布時間：2018-10-14 18:41

【摘要】：減少火電機組的粉塵排放量是目前國家的重要國策,煤炭燃燒是我國粉塵污染的主要來源之一,選擇什么型式的除塵器是燃煤電廠滿足環(huán)保要求的重要問題。 靜電除塵器一直在電力行業(yè)占據主導地位,隨著濾袋技術的不斷進步,布袋除塵器和電袋除塵器也成為很多電廠的選擇方案。 近幾年,環(huán)保要求不斷提高,新標準《火電廠大氣污染物排放標準》已經于2012年1月1日開始執(zhí)行,按原標準設計的除塵器已不能滿足新標準的要求,需要確定除塵器改造方案；同時,新建火電廠需要根據實際情況選擇滿足新標準的除塵器型式。 本論文對靜電除塵器、布袋除塵器和電袋除塵器的結構型式、工作原理、技術特點等方面進行了調研和比較分析,了解了各型式除塵器的特點；通過現場調研實際運行效果,對各煙氣除塵新技術在大型火電機組中的應用前景及適應范圍進行了比較、分析、論證,提出了新技術應用的建議；通過對各種濾料性能的分析,提出了針對不同煙氣情況,選用濾袋的推薦方案；通過對各種觀點和實驗結果的分析,對臭氧可能會對電袋除塵器濾袋產生不利影響的情況,提出了解決問題的推薦方案。 本論文分別以新建和改造電廠為研究對象,從技術特點、設備初投資、運行費用、安全可靠性、占地面積等方面對除塵器進行了綜合效益的比較。通過比較,針對不同情況和燃用不同煤質的電廠,提出了除塵器選型的推薦方案。
[Abstract]:Reducing dust emission from thermal power units is an important national policy at present. Coal combustion is one of the main sources of dust pollution in China. What type of dust remover is an important problem for coal-fired power plants to meet the requirements of environmental protection. Electrostatic precipitator (ESP) has been playing a leading role in power industry. With the development of bag filter technology, bag filter and bag filter have become the choice of many power plants. In recent years, the requirements of environmental protection have been continuously raised. The new standard, the Standard for Atmospheric Pollutant Emission from Thermal Power plants, has been implemented since January 1, 2012, and the dust collector designed according to the original standard can no longer meet the requirements of the new standard. At the same time, the new thermal power plant needs to select the type of dust collector that meets the new standard according to the actual situation. This paper has carried on the investigation and the comparative analysis to the electrostatic precipitator, the cloth bag dust collector and the electric bag dust collector's structure type, the working principle, the technical characteristic and so on, has understood each type of dust collector's characteristic, through the field investigation actual operation effect, The application prospect and application range of the new flue gas dust removal technology in large thermal power units are compared, analyzed, demonstrated, and suggestions for the application of the new technology are put forward. Through the analysis of various viewpoints and experimental results, the paper puts forward a proposal to solve the problem by analyzing the adverse effect of ozone on the filter bag of the ESP. In this paper, the new power plant and the reconstruction of the power plant as the research object, from the technical characteristics, equipment initial investment, operating costs, safety and reliability, occupation area and other aspects of the comprehensive benefits of the dust collector comparison. Through comparison, the recommended scheme of type selection of dust collector is put forward for power plants with different conditions and different coal quality.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM621.73

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本文編號：2271299