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標題: 選擇性觸媒脫硝還原反應注氨量探討
Effect of ammonia injection on the NOx removal efficiency of selective catalytic reduction
作者: 吳淑媚
Wu, Shu-Mei
關鍵字: 選擇性觸媒脫硝還原反應;SCR;注氨量;ammonia injection
出版社: 環境工程學系所
引用: 張錦松、黃政賢,「環境工程概論」,高立圖書,2003 蕭木村,「空氣污染防治-氮氧化物篇」,台電工程月刊,第587期,1997 胡兵和、王牧野、吳勇民、何明中、鄭建華、郗海東,「氮氧化物的污染與治理方法」,環境保護科學期刊,第32卷,第4期,2006 吳碧君、方述剛、方志星、盛永校,「煙氣脫硝工藝及其化學反應原理分析」,熱力發電,2006 台灣電力公司公眾服務處,「台灣電力公司民國95年業務資料卡」,2007 台灣電力公司,「既有汽力機組因應電設施排放標準空氣污染改善工程計畫可行性研究及概念設計」期末報告,1995 李博仁,「煤與發電」,台電工程月刊,1993 台灣電力公司燃料處,「購煤煤源分類表」,2006 台灣電力公司大林模中,「汽力機組環保設備介紹班講義」,2006 張玉金、吳天化,「選擇性還原脫硝觸媒再生可行性研究」完成報告,台灣電力公司94年度研究專題,2005a 張玉金、吳天化,「台中電廠#1~#8機SCR觸媒檢測」,2005b 廖逸飛,「台中發電廠選擇性還原脫硝觸媒再生可行性評估」完成報告,台灣電力股份有限公司94年度研究計畫,2005 A. Miyamoto, K.Kobayashi, etal., “Air Pollution Control Technology Fact Sheet”, Phys. Chem, Vo1. 86, 1982 ABB Air Preheater, Inc.“Lijugstrom Air Preheater Designs for Application with SCR System”, 2001 American Society for Testing Methods,“Stand Classification of Coals by Rank, ASTM D388, 1995 Babcock & Wilcox,“STEAM its generation and use”,40th edition, 1992 B.C Kunkel, and C.U.I. Odenbrand, “Aspects of the Distribution of three Ammonium Salts in a SCR Catalysts”, Association of Finnish Chemical Societies, Catalyst Division, 1996 C. Senior, K.Davis, M.Bockelie and etc. “SCR Deactivation Mechanism Related to Alkali and Alkaline Earth Elements”, Conference on SCR and SNCR for NOx Control, 2003 D.Cobb,L.Glatch, J.Rund and S.SYNDER, Environmental Progress, Vol.10 No.1, 1994 H.Bosch and F. Janssen, Catalysis Today, Vo1.2, 1987 H.Gutberlet, “Deactivation of SCR Catalyst”, KWH Catalysts, Inc. ,1995 H.K Park, “Remanufacturing Process System for Deactivated SCR Catalysts”, RICA, Hanseo Unuversity, Korea, 2005 Mistsubishi Heavy Industries, LTD,“NOx Reduction System Technical Specification”CBD-96-741 Sep.1996 The U.S Department of Energy, “Environmental Benefits of Clean Coal Tenchnologies”, Clean Coal Technolgy Topical Report Number 18, April 2001
本研究利用現場即時資料蒐集系統所蒐集的小時平均值及各項統計數據結果,分別就負載、煙氣流量、煤炭性質、SCR 進出口NOx產生量等因素探討實場上影響注氨量的相關性,提供現場操作人員參考並計算最適注氨量,以降低因殘餘過多氨,而使得SCR下游空氣預熱器造成堵塞,增加操作困難及成本。
研究結果顯示以煤炭性質影響SCR 進出口NOx產生量,連帶影響注氨量多寡,在設備固定無改變與脫硝效率日益衰退情況下,要降低注氨量必需由燃料源頭管理做起才能達到減廢之效果。

Thermal Power is one of the main electric power generate way in Taiwan, but it also accompanied with a large amount of air pollutants emission, like particulate matter、sulfur oxides(SOx)and nitrogen oxides(NOx)Before the electricity generate from renewable energy or other alternatire energy is enough to substitute that from fossil fuel, thermal power is still the main stream of power generation in recent future.
Today, in the face rising environmental problems and increasing concerns about sustarnable develpment, electric utilites need to close look their pollutants emission. It is important to use BACT(Best Available Control Technology)and to keep APCD(Air Pollution Control Device)in good performance.
SCR(Slectire Cotalytic Reduction)is a effective way for NOx control, when ammonia passing through catalyst in SCR reactor, it will react with NOx in the flue gas, become nitrogen and moisture, reduce NOx emission eventually.
This research focuses on the long term optimum ammonia injection amounts of SCR, some data collect from plant operation real time data acquisition system, try to identify the dominant factor that affect this operation.
Since ammonia over dosing and too high ammonia slip will increase the difference pressure of air heater cause plant efficiency lost, so better process control may get less operation problems.
The suggestion of this research can offer plant operator optimize their ammonia inzection control more effectirely, reduce the operation and maintenance cost.
其他識別: U0005-0208200715350100
Appears in Collections:環境工程學系所

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