本文選題：脈沖低溫等離子體 + 汞��； 參考：《華北電力大學(xué)》2017年碩士論文

【摘要】：本文通過研發(fā)設(shè)計脈沖低溫等離子體電源研發(fā)和反應(yīng)器設(shè)計,進(jìn)行低溫等離子體處理含汞廢氣的實驗研究,重點(diǎn)研究了電源參數(shù)(放電頻率、放電電壓)、煙氣在反應(yīng)器中的停留時間對單質(zhì)汞氧化率的影響,同時研究了模擬煙氣中O2含量、HCl添加量對脫汞效果的影響,并以此分析脈沖低溫等離子體脫汞技術(shù)的作用機(jī)理,并應(yīng)用于廢棄熒光燈管回收資源化處置工程應(yīng)用中。實驗研究結(jié)果表明:1)放電電壓高于8KV時,等離子體對單質(zhì)汞有明顯氧化效果,且電壓越高,處理效果越好,但高電壓下容易被擊穿;而隨著放電頻率的增加,單質(zhì)汞濃度迅速下降;峰值電壓9KV、放電頻率400Hz時氧化效果最經(jīng)濟(jì)。2)隨著單質(zhì)汞初始濃度增加,處理效率先增后減,Hg0初始濃度為253.4μg/m3時,Hg0氧化效率最高。3)停留時間越長,反應(yīng)越充分,停留時間高于7s時,氧化率達(dá)到91.65%。4)O2、HCl單組分對單質(zhì)汞氧化有促進(jìn)作用。O2的效果相比于HCl明顯。0%O2/0%Cl2氛圍的氧化率為0,20%O2/0ppm C l2氛圍的氧化率高達(dá)71.65%,而20%O2/100ppm C l2氛圍的氧化率僅提高至86.73%。本文對實際工程廢棄熒光燈管處理過程的含汞廢氣脫除進(jìn)行現(xiàn)場中試實驗,通過改變電源電壓及頻率,實現(xiàn)Hg0氧化率和HgT去除率分別達(dá)88.84%和92.9%,證明了脈沖低溫等離子體脫汞技術(shù)具有一定的經(jīng)濟(jì)效益、環(huán)境效益和社會效益,可以替代MRT工藝的尾氣處理系統(tǒng)。
[Abstract]:Through the research and development of pulsed low-temperature plasma power supply and reactor design, the experimental study on the treatment of mercury-containing waste gas by low-temperature plasma was carried out in this paper, and the power parameters (discharge frequency, discharge frequency) were studied emphatically. The effect of discharge voltage and residence time of flue gas in reactor on the oxidation rate of elemental mercury was studied. The effect of O _ 2 content and HCl addition on mercury removal efficiency was studied, and the mechanism of pulsed low-temperature plasma mercury removal technology was analyzed. It is applied to waste fluorescent lamp tube recycling and disposal engineering application. The experimental results show that when the discharge voltage is higher than that of 8KV, the plasma has obvious oxidation effect on elemental mercury, and the higher the voltage, the better the treatment effect, but the higher the voltage, the easier it is to be broken down, and with the increase of discharge frequency, The peak voltage of 9 KV and the most economical oxidation efficiency at discharge frequency of 400Hz increased with the increase of initial concentration of mercury, the treatment efficiency increased first and then decreased when the initial concentration of Hg _ 0 was 253.4 渭 g/m3. The maximum oxidation efficiency of Hg _ (0) increased with the increase of the initial concentration of Hg _ (0), and the maximum oxidation efficiency of Hg _ (0). 3) the residence time was longer when the initial concentration of Hg _ (0) was 253.4 渭 g/m3. The more sufficient the reaction, the longer the residence time is higher than 7 s, The oxidation rate reached 91.65%. 4% O2HCl promoted the oxidation of mercury. O 2 compared with HCl. 0O 2 / 0 Cl 2 oxidation rate was 71.65% in 020 O 2 / 0 ppm Cl 2 atmosphere, while the oxidation rate in 20%O2/100ppm CL 2 atmosphere only increased to 86.73%. In this paper, the field pilot-scale experiment is carried out on the removal of mercury containing waste gas from waste fluorescent lamp tubes in practical engineering. By changing the power supply voltage and frequency, The oxidation rate of Hg0 and the removal rate of HgT are 88.84% and 92.9% respectively. It is proved that the pulsed low-temperature plasma mercury removal technology has certain economic benefits, environmental benefits and social benefits, and can replace the tail gas treatment system of MRT process.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X701

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉元軍;趙曉明;;低溫等離子體技術(shù)在染整中的應(yīng)用及發(fā)展[J];染整技術(shù);2015年05期

2 張云明;劉慶明;宇燦;汪建平;;大能量電點(diǎn)火系統(tǒng)設(shè)計與火花放電特性實驗研究[J];高電壓技術(shù);2014年04期

3 馮鳳玲;趙利;;燃煤鍋爐煙氣活性炭吸附脫汞技術(shù)研究[J];華北電力技術(shù);2014年03期

4 阿熱依古麗;陳揚(yáng);賈保軍;劉俐媛;馮欽忠;;低溫等離子體協(xié)同處理Hg~0、NO_x、SO_2的機(jī)理研究[J];環(huán)境工程;2013年05期

5 周燁;宋紅兵;;適用于中國燃煤電廠的汞監(jiān)測及排放控制技術(shù)[J];環(huán)境工程;2013年05期

6 王相鳳;鄧雙;劉宇;張凡;張辰;曹晴;;燃煤煙氣安大略汞測試方法的實驗研究[J];環(huán)境工程;2013年02期

7 趙傳軍;;焚燒煙氣中汞的在線監(jiān)測方法[J];中國環(huán)保產(chǎn)業(yè);2013年01期

8 韓克華;任西;秦國圣;褚恩義;;高壓脈沖功率源輸出特性[J];探測與控制學(xué)報;2012年04期

9 龍慶華;胡偉;;原子熒光冷汞法測定地表水中的汞[J];環(huán)境工程;2012年02期

10 楊麗;尹衛(wèi)萍;;火電廠廢氣中汞監(jiān)測技術(shù)發(fā)展現(xiàn)狀與趨勢分析[J];北方環(huán)境;2011年10期

相關(guān)碩士學(xué)位論文 前4條

1 郝碩碩;低溫等離子體處理含汞廢氣的研究[D];華北電力大學(xué);2016年

2 朱海龍;高壓納秒脈沖等離子體放電特性研究[D];大連理工大學(xué);2010年

3 王勇;磁電等離子體技術(shù)用于汽車節(jié)能減排的實驗研究[D];重慶大學(xué);2010年

4 要杰;液相煙氣脫汞動力學(xué)研究[D];華北電力大學(xué)（河北）;2008年

，

本文編號：1988503