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  • 學位論文

濕式排煙脫硫最佳成本函數之探討

Cost Function for Wet Desulfurization of Flue Gas

指導教授 : 林正芳

摘要


在台灣,污染防治排煙脫硫是以濕式方法為主要處理流程,整體市場的占有率達到95%以上,其中又以四種處理系統,包括氫氧化鈉法、氧化鎂法、石灰石法、海水法最為常用,並各有其優缺點和最適使用條件。 一般而言,在選購時如何依自身污染源的煙氣條件,做出最有利的判定與選用,屬於相當困難之決策。如非有專業知識審慎評估,則僅能依市場使用率或是簡單成本評估方法做出決定,常造成資源浪費或不適用情況。 本研究以濕式排煙脫硫四種處理方法為研究對象,並界定研究範圍、排除不確定因素,希望在同一基準下,建立簡易成本函數做為選購時之評選依據。 本研究所建立的成本模式模擬測試結果顯示:在煙氣量小、且硫氧化物濃度不高情況下,以選擇氫氧化鈉法較為適合;中小型或中大型鍋爐所排放煙氣量較多,在運轉成本考量下,則建議選擇氧化鎂法;煙氣量大、且硫氧化物濃度較高時,應以石灰石法為處理流程;而海水法之使用有其地理條件及漁業政策問題限制,否則應是最優選擇。

並列摘要


Wet method is one of major treatment procedures for flue-gas desulphurization. In Taiwan, there are four kinds of treatment system are used frequently and the market share is over 95%. In order to assist users for better decision-making process, the purpose of this study is to build up a simple cost function and to compare four commonly used wet methods of flue-gas desulphurization as the subject of research. In additions, this study also defines the research scope and rules out the uncertain factors. Based on the simulation results of this cost model, this study shows that the sodium hydroxide method is the best choice of the condition with small gas volume and low concentration of sulfur oxides. For the condition of medium to big size, boilers with higher discharge gas volume and where the operating cost matters, the magnesium oxide method is a better choice. While the discharge gas volume is huge and the concentration of sulfur oxides is significantly high, the limestone method is the best fit. Finally, if there is no limitation of geographic condition and fishery policy, seawater method is the best of choices.

參考文獻


Babcock-Hitachi K.K. Flue Gas Desulfurization Systems. http://www.bhk.co.jp/english/2energy/03exhaust/eh2.html
Biondo, S.J., and Marten, J.C. (1977). A History of Flue Gas Desulfurization Systems Since 1850, Journal of The Air Pollution Control Association, Vol. 27(10), 948-961.
Fujikasui Engineering Co., Ltd. (2007). Flue Gas Desulfurization System for GPPC Cogeneration Plant Report.
Heckman, J.J. (1979). Sample Selection Bias as a Specification Error, Econometrica, Vol. 47(1), 153-161.
IEA, (2003). Air Pollution Control Costs for Coal-Fired Power Station (2 of 5) SO2 Control, IEA Coal Research- The Clean Coal Center.

被引用紀錄


吳欣儒(2014)。利用活性碳捕捉模擬脫硫廢水中之氧化態汞研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2014.00004

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