本文關鍵詞： 濕法煙氣脫硫 傳統(tǒng)板式除霧器 靜電除霧器 旋風除霧器 覆膜 涂層　出處：《華北電力大學》2014年碩士論文　論文類型：學位論文

【摘要】：燃煤電廠濕法脫硫后的煙氣中含有大量酸霧、石膏粒子以及少量其他的重金屬微粒，如果不能有效去除，其將對后續(xù)設備造成腐蝕，對周圍環(huán)境造成污染，對人體造成很大的危害，為了避免對濕法煙氣脫硫后續(xù)設備的腐蝕和環(huán)境的污染，火電廠在濕法脫硫塔中都安裝有脫硫除霧器。但是由于經濟的快速發(fā)展，電力的消耗劇增，依靠燃煤為主的火力發(fā)電廠產生的污染也日益加重，而傳統(tǒng)脫硫除霧器發(fā)展緩慢，除霧效率有限，尤其對微米級及亞微米級粒子幾乎不能捕集的諸多弊端也日漸顯現(xiàn)。因此，對脫硫塔高效除霧技術研究顯得尤為重要。 本文首先通過查閱文獻資料綜合介紹了傳統(tǒng)板式除霧器除霧機理，結構特點，性能參數(shù)，影響因素和常見問題及原因，以及簡要介紹了其他分離技術的原理，結構特性及現(xiàn)狀。 其次，在傳統(tǒng)板式除霧器和其他分離技術的理論啟示的基礎上，結合氣液的分離理論及濕法脫硫煙氣的工況，提出了脫硫塔高效除霧技術并進行了深入研究：①對傳統(tǒng)板式除霧器提出了改造內容并進行了模型構建和計算；②對板式除霧器進行了成垢機理、原因分析，，并提出了對板面覆膜或涂層防垢的思路；③受靜電除霧（塵）技術的啟發(fā)，提出靜電除霧技術應用于濕法煙氣除霧中，并對本體結構中重點影響高效的部分進行分析研究；④未來濕法脫硫大氣量，高氣速背景下使得旋風除霧技術有了廣闊的應用空間，文章根據(jù)旋風分離技術相關的理論基礎，對旋風除霧器的的本體重點部分進行了有關計算；⑤簡要分析了濕式除塵和膜極板應用于濕法脫硫后煙氣處理的優(yōu)越特性和應用的可行性。 最后，本文對高效除霧器和傳統(tǒng)板式除霧器進行了原理，除霧效率，結構特點，環(huán)保及經濟性方面的簡要評價，并對脫硫塔除霧器的選擇給出了相關建議，并展望了高效除霧技術在燃煤電廠應用中可為節(jié)能減排做出巨大貢獻。
[Abstract]:The flue gas of coal-fired power plant after wet desulfurization contains a large amount of acid fog, gypsum particles and a small amount of other heavy metal particles. If it cannot be removed effectively, it will cause corrosion to the follow-up equipment and pollute the surrounding environment. In order to avoid corrosion and environmental pollution of the follow-up equipment for wet flue gas desulfurization, thermal power plants have installed desulfurization and mist remover in the wet desulfurization tower. However, due to the rapid development of economy, the consumption of electric power has increased dramatically. The pollution produced by coal-fired thermal power plants is becoming more and more serious, while the traditional desulphurization defogger is developing slowly, and the efficiency of removing fog is limited, especially for micron and submicron particles which can hardly be captured. It is very important to study the high efficiency defogging technology of desulphurizer. In this paper, the mechanism, structure characteristics, performance parameters, influencing factors, common problems and causes of the traditional plate demister are introduced, and the principles of other separation techniques are briefly introduced. Structural characteristics and current situation. Secondly, on the basis of the theoretical enlightenment of the traditional plate demister and other separation technologies, combined with the gas-liquid separation theory and the working conditions of the wet desulfurization flue gas, The high efficiency defogging technology of desulphurizer is put forward and the retrofit content of traditional plate demister is put forward. The model construction and calculation are carried out, and the scaling mechanism of the plate type mist remover is calculated. The reasons are analyzed. The paper also puts forward the idea of anti-fouling on the plate surface, which is inspired by electrostatic fogging (dust) technology, and puts forward the application of electrostatic de-fogging technology in wet flue gas defog. This paper also analyzes and studies the important parts of the body structure that affect the high efficiency. In the future, the large amount of wet desulfurization in the future makes the cyclone defog technology have a broad application space under the background of high gas velocity. According to the theoretical basis of cyclone separation technology, Based on the calculation of the main parts of the cyclone precipitator, the advantages of wet dust removal and the application of membrane plate in flue gas treatment after wet desulphurization are briefly analyzed and the feasibility of the application is also discussed. Finally, this paper gives a brief evaluation of the high efficiency, structure, environmental protection and economy of the high efficiency demister and the traditional plate demister, and gives some suggestions on the choice of the demister for the desulfurization tower. The application of high efficiency defogging technology in coal-fired power plants is expected to make a great contribution to energy saving and emission reduction.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：X773

【參考文獻】

相關期刊論文 前2條

1 杭德森,高小玲;國外硫酸工業(yè)纖維除霧器簡介[J];硫酸工業(yè);1998年04期

2 胡慶保;;國產化電除霧器在生產中的改進[J];銅業(yè)工程;2011年04期

本文編號：1515467