高濃度SO2含有ガス中における微量NH3の紫外吸収分光測定

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/07/01

タイトル(英語): Ultraviolet Absorption Spectroscopy Measurement of Trace NH3 in Gases Containing High Concentration of SO2

著者名: 福地　哲生（(財) 電力中央研究所 電力技術研究所），二宮　英樹（(株) 四国総合研究所 電子技術部）

著者名(英語): Tetsuo Fukuchi (Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry), Hideki Ninomiya (Electrotechnical Department, Shikoku Research Institute)

キーワード: 二酸化硫黄，アンモニア，紫外光，吸収分光法，排ガス　　sulfur dioxide，ammonia，ultraviolet light，absorption spectroscopy，flue gas

要約(英語): In heavy oil-burning thermal power plants, NH3 injection is frequently used to neutralize SOx in flue gas. In order to ascertain the neutralization effect the concentration of NH3 must be measured in the presence of high concentration of SO2. Ultraviolet absorption spectroscopy in the 200-225 nm wavelength region is the most sensitive method to measure SO2 and NH3. However, as the absorption bands of SO2 and NH3 overlap, accurate determination of the SO2 absorption is needed to detect the absorption due to trace NH3. The nonlinear dependence of the absorption coefficient on the concentration, which appeared for absorption coefficients of α>0.05 cm-1, is taken into account using a third order polynomial approximation in order to accurately determine the SO2 absorption. An analysis procedure based on this approximation was developed. Results showed that NH3 concentrations of about 4 ppm can be detected in the presence of SO2 concentrations of about 1000 ppm.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.7 （2011） 特集：高周波マイクロ磁気応用技術の最前線

本誌掲載ページ: 540-546 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/7/131_7_540/_article/-char/ja/