本文選題：多環(huán)芳烴 + 煉焦煙氣��； 參考：《華北理工大學》2017年碩士論文

【摘要】：21世紀以來,隨著人類對環(huán)保認識不斷深入,由焦化帶來的環(huán)境問題也越來越引起人們的關注,特別是焦化煙氣中存在大量的美國EPA優(yōu)先推薦處理的16種多環(huán)芳烴:萘、苊、苊烯、芴、菲、蒽、熒蒽、芘、苯并[a]蒽、(?)、苯并[b]熒蒽、苯并[k]熒蒽、苯并[a]芘、茚[123-cd]并芘、二苯并[a,h]蒽、苯并[g,h,i]傒,極易對人體的呼吸道等器官造成嚴重的危害,導致肺癌、食道癌等疾病發(fā)生。微波作為一種清潔、節(jié)能環(huán)保的處理技術有利于在煉焦煙氣中多環(huán)芳烴的處理。首先通過FLUENT軟件模擬,對40kg實驗室焦爐的溫度場進行了模擬,并結合各階段多環(huán)芳烴產(chǎn)生規(guī)律,得到煉焦過程多環(huán)芳烴產(chǎn)生的溫度區(qū)間為700~1000℃。通過采用豎式電爐模擬制備煉焦煙氣,并對裂解煙氣通入微波管式爐進行微波處理,以二氯甲烷和玻璃纖維對多環(huán)芳烴進行采集,高效液相色譜法定性、定量分析,研究了不同處理溫度和吸波介質(zhì)條件對微波處理煉焦煙氣中多環(huán)芳烴效果的影響,為煉焦煙氣中多環(huán)芳烴的末端處理提供可靠的理論依據(jù)。通過不同微波溫度對多環(huán)芳烴的處理效果的影響研究得到,當微波溫度為400℃時,煙氣中多環(huán)芳烴的處理效率達37.30%,16種多環(huán)芳烴總體處理效果最佳。通過對多環(huán)芳烴環(huán)數(shù)的處理分析,四環(huán)和五環(huán)多環(huán)芳烴的處理效果較好。通過研究活性炭和碳化硅兩種吸波介質(zhì)粒徑和用量對多環(huán)芳烴處理的影響得出,當以活性炭為吸波介質(zhì)時,采用粒徑6mm,質(zhì)量5g活性炭,微波處理為溫度400℃時,對煉焦煙氣中多環(huán)芳烴的處理效果最好,處理效率為44.76%;而以碳化硅為吸波介質(zhì)時,當微波溫度400℃時,200目粉末狀碳化硅的用量為6g時,處理效率可達49.10%;采用微波降解聯(lián)合活性炭吸附耦合處理方法,當微波溫度400℃,吸波介質(zhì)活性炭粒徑4mm時,對煉焦煙氣中多環(huán)芳烴的處理效果最好,處理效率可達90%以上。
[Abstract]:Since the 21st century, with the deepening of human understanding of environmental protection, the environmental problems caused by coking have attracted more and more attention. In particular, there are a large number of 16 PAHs: naphthalene, acenaphthene, which are first recommended by American EPA in coking flue gas. Acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo [a] anthracene, benzo [b] fluoranthene, benzo [k] fluoranthene, benzo [a] pyrene, indene [123-cd] and pyrene, dibenzo [ahuh] anthracene, benzo [] anthracene, benzo [123-cd] anthracene, benzo [a] anthracene, etc. Diseases such as esophageal cancer occur. As a clean, energy saving and environmental protection technology, microwave is beneficial to the treatment of polycyclic aromatic hydrocarbons (PAHs) in coking flue gas. Firstly, the temperature field of coke oven in 40kg laboratory was simulated by fluent software, and the temperature range of polycyclic aromatic hydrocarbons (PAHs) in coking process was obtained by combining with the law of polycyclic aromatic hydrocarbons (PAHs) generation in different stages. The temperature range of PAHs in coking process was 700 鈩，

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