本文選題：船舶柴油機(jī) + 廢氣處理��； 參考：《大連海事大學(xué)》2016年碩士論文

【摘要】：隨著經(jīng)濟(jì)全球化的發(fā)展,與世界貿(mào)易息息相關(guān)的航運(yùn)船舶數(shù)量急劇增加,由此造成的大氣污染問(wèn)題日益突出,嚴(yán)重影響了人們的身體健康。近年來(lái),相關(guān)船舶柴油機(jī)廢氣排放法規(guī)日趨嚴(yán)格,對(duì)船舶柴油機(jī)廢氣的處理成為當(dāng)前重要而緊迫的任務(wù)。本文在介紹國(guó)內(nèi)外主流的脫硝工藝,并對(duì)他們各自的優(yōu)缺點(diǎn)加以總結(jié)的基礎(chǔ)上,針對(duì)航運(yùn)船舶廢氣脫硝的問(wèn)題,提出了基于氯酸氧化的船舶柴油機(jī)廢氣脫硝的方法并且進(jìn)行了實(shí)驗(yàn)研究。首先通過(guò)自行設(shè)計(jì)的船舶模擬煙氣實(shí)驗(yàn)臺(tái)和鼓泡反應(yīng)裝置,改變模擬煙氣中NO、O2的濃度、吸收液初始濃度、pH值等參數(shù),研究了NaClO溶液的脫硝性能；其次改變模擬煙氣中NO、SO2、O2的濃度、吸收液初始濃度、pH值以及反應(yīng)溫度等參數(shù),研究了NaClO2溶液的脫硝性能。實(shí)驗(yàn)結(jié)果表明,在相同條件下,NaC102的脫硝效率明顯高于NaClO。在實(shí)驗(yàn)室條件下實(shí)驗(yàn)得到NaClO的NO最大脫除率為43.9%,而NaC102為96%。通過(guò)實(shí)驗(yàn)得出,NaClO吸收液脫硝效率較高的反應(yīng)條件是吸收液初始濃度為0.01mol/L,吸收液初始pH值為5-6之間,NO濃度控制為600ppm。NaC102吸收液脫硝效率較高的反應(yīng)條件是吸收液初始濃度為0.01mol/L、吸收液初始pH為6、NO濃度為400ppm、反應(yīng)溫度為50℃。本文還對(duì)NaC102吸收液在上述實(shí)驗(yàn)條件下進(jìn)行了平行實(shí)驗(yàn),NO的平均氧化率達(dá)到了87.6%,NOx的平均脫除率達(dá)到了74%,脫硝效率較高,且穩(wěn)定性較好。通過(guò)實(shí)驗(yàn)結(jié)果分析,NaClO吸收液的脫硝效率受吸收液初始pH值,吸收液濃度等因素影響較大。NaClO2吸收液的脫硝效率受吸收液初始pH值,吸收液濃度,進(jìn)口氣體NO濃度等因素影響較大。本文對(duì)NaClO和NaC102溶液的脫硝性能進(jìn)行了基礎(chǔ)的實(shí)驗(yàn)研究,為實(shí)船應(yīng)用提供了一定的理論和實(shí)驗(yàn)基礎(chǔ)。
[Abstract]:With the development of economic globalization, the number of shipping ships, which are closely related to world trade, has increased dramatically, resulting in an increasingly prominent problem of air pollution, which has seriously affected the health of people.In recent years, the emission regulations of marine diesel engine have become more and more strict, and the treatment of marine diesel engine exhaust gas has become an important and urgent task.On the basis of introducing the mainstream denitrification technology at home and abroad and summarizing their respective advantages and disadvantages, this paper aims at the problem of shipping ship exhaust gas denitrification.A method for denitrification of marine diesel engine exhaust gas based on chloric acid oxidation is proposed and an experimental study is carried out.Firstly, the denitrification performance of NaClO solution was studied by means of the self-designed ship simulated flue gas test bench and bubbling reaction device, which changed the concentration of NOO _ 2 in simulated flue gas and the initial concentration of absorbent and pH value, and then changed the concentration of no _ 2 so _ 2O _ 2 in simulated flue gas.The denitrification performance of NaClO2 solution was studied by pH and reaction temperature.The experimental results show that the denitrification efficiency of NaC102 is obviously higher than that of NaClO under the same conditions.The maximum removal rate of no was 43.9% for NaClO and 96% for NaC102 under laboratory conditions.The temperature is 50 鈩，

本文編號(hào)：1744566