本文選題：靜電除塵器　切入點：高頻電源　出處：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：粉塵作為火力發(fā)電企業(yè)主要污染排放物之一,由于其基數(shù)較大,且不間斷產(chǎn)生,對環(huán)保造成了較大壓力。進行煙氣粉塵捕集處理成了火力發(fā)電企業(yè)一項必須進行的重要工作。目前,火力發(fā)電企業(yè)普遍采用靜電除塵器對排放的煙氣進行除塵、捕集。然而,受限于自身設(shè)計等多方原因,先前的除塵系統(tǒng)除塵能力效率較為低下、功耗相對較高,繼續(xù)進行一些系統(tǒng)性能優(yōu)化提升。為此,發(fā)電企業(yè)進行了系列的除塵優(yōu)化升級探索和改造。本課題以當(dāng)前最先進超超臨界百萬火力發(fā)電機組為研究載體,介紹了電除塵的發(fā)展歷程,調(diào)查了靜電除塵器除塵器原理,分析了靜電除塵器除塵效率影響因素,并以此為突破口找出了傳統(tǒng)靜電除塵系統(tǒng)的弊端所在,并引入高頻電源替代傳統(tǒng)工頻電源的改造方案。文章闡述了新型高頻電源改造在電除塵系統(tǒng)中的應(yīng)用原理,以及其相對于傳統(tǒng)電源在節(jié)能降耗、提高除塵效率和設(shè)備運行調(diào)整方面的優(yōu)勢所在。隨后,將理論與實際結(jié)合,介紹了電廠高頻電源改造實例并對改造后的設(shè)備進行系統(tǒng)的經(jīng)濟、環(huán)保性能以及改造后的電能質(zhì)量影響進行了采樣評估。綜合分析結(jié)果顯示其經(jīng)濟、環(huán)保效益明顯,值得大力推廣,存在一些細(xì)微的不足也能通過一定手段較好解決。最后,課題也展望了后續(xù)電除塵的前進方向。
[Abstract]:Dust, as one of the main pollutants in thermal power plants, has a great pressure on environmental protection because of its large base and uninterrupted production.Collecting flue gas dust has become an important task for thermal power generation enterprises.At present, electrostatic precipitator (ESP) is widely used in thermal power plants to collect and collect flue gas.However, limited by its own design and other reasons, the dust removal capacity of the previous dust collection system is relatively low efficiency, power consumption is relatively high, and continue to carry out some system performance optimization and improvement.To this end, power generation enterprises have carried out a series of dust removal optimization and upgrading exploration and transformation.Taking the most advanced ultra-supercritical thermal power generating set as the research carrier, this paper introduces the development course of electrostatic precipitator, investigates the principle of electrostatic precipitator, and analyzes the influencing factors of electrostatic precipitator's dust removal efficiency.The drawback of the traditional electrostatic dusting system is found out, and the scheme of replacing the traditional power frequency power supply with the high frequency power supply is introduced.This paper describes the application principle of the new high frequency power source in the electric dust collection system, and its advantages over the traditional power supply in saving energy and reducing the consumption, improving the dust removal efficiency and adjusting the operation of the equipment.Then, combining the theory with practice, the paper introduces the example of power plant high-frequency power supply transformation, and evaluates the system economy, environmental protection performance and power quality effect after retrofit.The results of comprehensive analysis show that its economic and environmental benefits are obvious, and it is worth popularizing. There are some minor shortcomings which can be solved by certain means.Finally, the subject also looks forward to the future direction of the follow-up electro-dedusting.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM621.73

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