【摘要】：近年來,國(guó)家、地方相繼出臺(tái)標(biāo)準(zhǔn)對(duì)燃煤電廠的NOx排放量、排放濃度做出了明確的規(guī)定,并制定相關(guān)法規(guī)以規(guī)范電廠的排放行為并加大了懲治力度。與此同時(shí),各級(jí)政府在電量計(jì)劃分配、脫銷電價(jià)補(bǔ)償、電力市場(chǎng)交易資格、政府資金補(bǔ)償?shù)确矫孀龀隽朔e極的引導(dǎo),基于以上原因,本電廠決定對(duì)現(xiàn)有機(jī)組進(jìn)行脫硝改造。 目前,針對(duì)NOx生產(chǎn)機(jī)理,國(guó)內(nèi)燃煤電廠在減少NOx排放方面通常采用兩種措施,一是在燃燒過程中通過低NOx燃燒技術(shù)減少NOx生成,二是對(duì)煙氣進(jìn)行NOx脫除處理。參考改造后的案例不難發(fā)現(xiàn),低NOx燃燒技術(shù)脫硝效率較低,只能將NOx排放量降到400mg/Nm3,而煙氣脫硝技術(shù)NOx脫除效果顯著但投資大,綜合考慮后本電廠選擇較為常見的低NOx燃燒器及SCR聯(lián)合脫硝改造。 本文結(jié)合本廠機(jī)組實(shí)際情況,依托現(xiàn)有設(shè)備、場(chǎng)地、人力資源條件,通過對(duì)國(guó)內(nèi)外脫硝技術(shù)的研究,借鑒成熟的改造經(jīng)驗(yàn),在技術(shù)工藝、環(huán)境效益、經(jīng)濟(jì)分析等方面進(jìn)行了可行性研究,并針對(duì)脫硝改造工程制定監(jiān)理規(guī)劃方案,為改造工程順利開工并達(dá)到技改要求奠定基礎(chǔ)。
[Abstract]:In recent years, the national and local standards have made clear regulations on the NOx emissions and emission concentration of coal-fired power plants, and related laws and regulations have been formulated to standardize the emission behavior of power plants and to increase the punishment. At the same time, the governments at all levels have made positive guidance in the aspects of electricity quantity plan distribution, electricity price compensation, electricity market trading qualification, government fund compensation and so on. Based on the above reasons, the power plant has decided to carry on the denitrification transformation to the existing units. At present, according to the mechanism of NOx production, domestic coal-fired power plants usually adopt two measures to reduce NOx emissions, one is to reduce NOx generation through low NOx combustion technology in the combustion process, the other is to remove NOx from flue gas. It is not difficult to find that the denitrification efficiency of low NOx combustion technology is low, and the NOx emission can only be reduced to 400 mg / Nm3, while the flue gas denitrification technology NOx has a remarkable effect but a large investment. After comprehensive consideration, the low NOx burner and SCR combined denitrification revamp were selected. This paper combines the actual situation of the unit, relying on the existing equipment, site, human resource conditions, through the domestic and foreign denitrification technology research, learn from the mature experience of transformation, in the technical process, environmental benefits, The feasibility study was carried out in the aspects of economic analysis, and the supervision planning scheme was formulated for the denitrification project, which laid the foundation for the smooth start of the reconstruction project and the meeting of the technical innovation requirements.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：X773

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