本文選題：燃煤鍋爐 + 低氮燃燒器�。� 參考：《華南理工大學(xué)》2014年碩士論文

【摘要】：由于新環(huán)保標(biāo)準(zhǔn)《火電廠大氣污染物排放標(biāo)準(zhǔn)》（GB13223-2011）的公布，國(guó)家對(duì)環(huán)保要求越來(lái)越嚴(yán)格，為更好地達(dá)到環(huán)保要求以及進(jìn)一步降低脫硝運(yùn)行成本，經(jīng)過(guò)調(diào)研及針對(duì)電廠目前燃煤情況，對(duì)某電廠300MW燃煤鍋爐進(jìn)行了低氮燃燒器改造的必要性與可行性的研究分析，決定采用某鍋爐廠新研發(fā)的多維深度分級(jí)燃燒系統(tǒng)，并實(shí)施了低氮燃燒器技術(shù)改造。 為了考察新型低氮燃燒系統(tǒng)改造后的運(yùn)行狀態(tài)，以及為電廠日常運(yùn)行尋找最佳工況，依據(jù)國(guó)家以及行業(yè)相關(guān)標(biāo)準(zhǔn)進(jìn)行多維深度分級(jí)燃燒系統(tǒng)（多維深度分級(jí)）的調(diào)試，進(jìn)行制粉系統(tǒng)試驗(yàn)和燃燒優(yōu)化調(diào)整試驗(yàn)，通過(guò)一系列的磨煤機(jī)出力特性試驗(yàn)、磨煤機(jī)分離器擋板特性試驗(yàn)、煤粉細(xì)度調(diào)整試驗(yàn)，，還有習(xí)慣工況下變氧量試驗(yàn)、變高位燃盡風(fēng)量試驗(yàn)、變高位燃盡風(fēng)擺角試驗(yàn)、變氧試驗(yàn)、磨煤機(jī)投運(yùn)組合試驗(yàn)、變低位燃盡風(fēng)量試驗(yàn)、變夾心風(fēng)量試驗(yàn)、二次風(fēng)配風(fēng)方式試驗(yàn)、負(fù)荷特性試驗(yàn)、空預(yù)器漏風(fēng)測(cè)試等一系列試驗(yàn)，優(yōu)化低氮燃燒器的燃燒調(diào)整，尋找較優(yōu)運(yùn)行工況，優(yōu)化鍋爐燃燒狀況，更好地實(shí)現(xiàn)脫硝反應(yīng)器前入口煙氣中NOx含量低于300mg/Nm3的排放要求，延長(zhǎng)昂貴的SCR反應(yīng)器中金屬催化劑的壽命，進(jìn)一步降低SCR脫硝裝置的運(yùn)行成本，實(shí)現(xiàn)節(jié)能降耗，令鍋爐燃燒更加地穩(wěn)定、可靠與經(jīng)濟(jì)，防止出現(xiàn)水冷壁嚴(yán)重結(jié)焦和大屏嚴(yán)重掛焦問(wèn)題，提高鍋爐效率，達(dá)到了改造目標(biāo)。
[Abstract]:As a result of the promulgation of the new environmental protection standard (Standard for Atmospheric Pollutant Emission from Thermal Power plants, GB13223-2011), the national environmental protection requirements are becoming more and more stringent. In order to better meet the environmental protection requirements and further reduce the operating cost of denitrification, Based on investigation and analysis of the necessity and feasibility of low nitrogen burner reconstruction for 300MW coal-fired boiler in a power plant, a new multi-dimensional depth staged combustion system developed by a boiler factory was adopted. The technical revamping of low nitrogen burner was carried out. In order to investigate the operation state of the new low nitrogen combustion system after revamping and to find the best working condition for the daily operation of the power plant, the multi-dimensional depth staged combustion system (multidimensional depth classification) was debugged according to the relevant national and industry standards. The experiments of pulverizing system and combustion optimization adjustment were carried out. Through a series of tests on the output characteristics of coal mills, on the baffle characteristics of the separator of coal mills, on adjusting the fineness of pulverized coal, and on the test of changing oxygen under customary working conditions, Variable high burnout air volume test, variable high position burnout wind swing angle test, variable oxygen test, coal mill operation combination test, variable low position burnout air volume test, variable sandwich air volume test, secondary air distribution test, load characteristic test, A series of tests, such as air leakage test of air preheater, optimize combustion adjustment of low nitrogen burner, search for better operation condition, optimize boiler combustion condition, and better realize that NOx content in flue gas in front of denitrification reactor is lower than 300mg/Nm3 emission requirement. Prolonging the life of the metal catalyst in the expensive SCR reactor, further reducing the running cost of the SCR denitration unit, realizing energy saving and reducing consumption, making the boiler combustion more stable, reliable and economical. To prevent the serious coking on the water wall and the serious coke hanging on the large screen, to improve the boiler efficiency and to achieve the revamping goal.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM621.2

【共引文獻(xiàn)】

相關(guān)博士學(xué)位論文 前10條

1 呂洪坤;選擇性非催化還原與先進(jìn)再燃技術(shù)的實(shí)驗(yàn)及機(jī)理研究[D];浙江大學(xué);2009年

2 郭天祥;新型復(fù)合吸收劑液相同時(shí)脫硫脫硝的實(shí)驗(yàn)研究[D];華北電力大學(xué)（北京）;2011年

3 周昊;大型電站鍋爐氮氧化物控制和燃燒優(yōu)化中若干關(guān)鍵性問(wèn)題的研究[D];浙江大學(xué);2004年

4 馮兆興;高揮發(fā)分煤種電站鍋爐高效低NOx排放系統(tǒng)研究[D];華北電力大學(xué)（河北）;2007年

5 王春林;大型電站鍋爐配煤及燃燒優(yōu)化的支持向量機(jī)建模與實(shí)驗(yàn)研究[D];浙江大學(xué);2007年

6 朱建國(guó);煤粉的高溫低氧空氣燃燒和氮氧化物生成特性研究[D];中國(guó)科學(xué)院研究生院（工程熱物理研究所）;2008年

7 斯東波;超細(xì)煤粉再燃和深度空氣分級(jí)技術(shù)的試驗(yàn)研究與數(shù)值模擬[D];浙江大學(xué);2008年

8 蘇勝;氣體燃料再燃降低氮氧化物排放的實(shí)驗(yàn)研究與數(shù)值模擬[D];華中科技大學(xué);2007年

9 王俊;無(wú)煙煤粉循環(huán)流化床預(yù)熱燃燒和NO_x生成試驗(yàn)研究[D];中國(guó)科學(xué)院研究生院（工程熱物理研究所）;2011年

10 梁紹華;基于在線優(yōu)化技術(shù)的分層燃燒試驗(yàn)研究及應(yīng)用[D];浙江大學(xué);2008年

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