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  本文關(guān)鍵詞：應(yīng)用于城市隧道的除塵脫硝技術(shù)及關(guān)鍵設(shè)備研究　出處：《浙江大學》2015年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 隧道 顆粒物 二氧化氮 靜電除塵 吸附脫硝 空氣凈化

【摘要】：當前,我國機動車保有量急劇增長,所排放的尾氣污染日益嚴重。隨著我國城市建設(shè)的發(fā)展和交通需求量的增大,城市隧道的數(shù)量及長度呈劇增態(tài)勢。作為相對封閉的人造空間,隧道因內(nèi)外空氣交換不易,導(dǎo)致機動車尾氣所排放的顆粒物(PM)和二氧化氮(NO2)等典型氣態(tài)污染物逐漸積累,嚴重影響了城市隧道內(nèi)的行車環(huán)境,對隧道內(nèi)駕乘人員和周邊居民的身體健康造成了嚴重威脅。本文針對如何將除塵脫硝技術(shù)及其關(guān)鍵設(shè)備有效應(yīng)用于城市隧道進行了設(shè)計研究,以期為我國城市隧道的典型空氣污染物治理提供理論設(shè)計依據(jù)。首先,本文綜合比較和分析了現(xiàn)有隧道的空氣凈化技術(shù),選擇具有凈化效率高、工程應(yīng)用成熟并且經(jīng)濟可行的“靜電除塵+吸附脫硝”作為城市隧道典型空氣污染物(PM和NO2)的治理技術(shù)。接著,選擇一條3000m長的典型城市隧道作為除塵脫硝技術(shù)及其關(guān)鍵設(shè)備的設(shè)計應(yīng)用對象。通過對稀釋CO和煙霧需風量進行比較,確定除塵脫硝設(shè)備運行的處理風量為250 m3/s。在距離隧道洞口1832 m處開通旁路通道,作為除塵脫硝設(shè)備的安裝機房位置。然后,根據(jù)250 m3/s的處理風量,對除塵效率為80%的靜電除塵設(shè)備和脫硝效率為90%的吸附脫硝設(shè)備進行選型,確定最佳運行條件和設(shè)計方案。根據(jù)每天14 h的運行時間,對城市隧道除塵脫銷設(shè)備的運行費用進行核算和經(jīng)濟性分析。最后,對現(xiàn)有的城市隧道除塵脫硝技術(shù)進行改進研究。初步設(shè)計了一種用于城市隧道典型空氣污染物中的顆粒物(PM)收集、二氧化氮(N02)吸附的結(jié)構(gòu)簡單、功能全面、操作方便、成本低的移動式城市隧道除塵脫硝車。
[Abstract]:At present, the number of motor vehicles in China is increasing rapidly, and the emission of exhaust gas is becoming more and more serious. With the development of urban construction and the increase of traffic demand in China. The number and length of urban tunnels increase dramatically. As a relatively closed artificial space, the tunnel is not easy to exchange air between inside and outside. The accumulation of typical gaseous pollutants such as particulate matter (PMPM) and nitrogen dioxide (no _ 2) from vehicle exhaust has seriously affected the driving environment in urban tunnels. It poses a serious threat to the health of drivers and residents around the tunnel. This paper studies how to effectively apply the dedusting and denitrification technology and its key equipment to the urban tunnel. In order to provide a theoretical basis for the treatment of typical air pollutants in urban tunnels in China. Firstly, this paper comprehensively compares and analyzes the existing tunnel air purification technology, the selection has high purification efficiency. Engineering application of mature and economic "electrostatic dust removal adsorption denitrification" as a typical urban tunnel air pollutants PM and no _ 2) treatment technology. A typical city tunnel with a length of 3000m is selected as the design and application object of dust removal and denitrification technology and its key equipment. It is determined that the handling air volume of the dust-removal and denitrification equipment is 250 m3 / s. A bypass passage is opened at 1832 m from the tunnel entrance as the installation room position of the dust-removal and denitrification equipment. Then. According to the treatment air volume of 250m3 / s, the electrostatic dedusting equipment with dust removal efficiency of 80% and the adsorption denitrification equipment with denitrification efficiency of 90% were selected. According to the operation time of 14 hours per day, the operating cost and economic analysis of the dedusting and unloading equipment in the city tunnel are carried out. The existing technology of dust removal and denitrification in urban tunnels was studied. A new method for collecting particulate matter (PMN) from typical air pollutants in urban tunnels was designed. The structure of nitrogen dioxide (N02) adsorption was simple. Mobile Dust removal and denitrification vehicle with full function, convenient operation and low cost.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X734

【共引文獻】

相關(guān)期刊論文 前1條

1 石明楊;任剛;崔興華;王松;楊洪海;;公路隧道靜電除塵技術(shù)應(yīng)用現(xiàn)狀[J];湖南交通科技;2013年04期

相關(guān)會議論文 前1條

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相關(guān)博士學位論文 前1條

1 張強華;南京市工業(yè)和商業(yè)區(qū)域可吸入顆粒物的污染特征及控制研究[D];南京理工大學;2012年

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本文編號：1390571