排放管道中氯化氫等自動監測調查技術開發-傅立葉轉換紅外光光譜分析法（FTIR）
| 中文摘要 | 進行排放管道中氯化氫和氨氣自動監測有其重要性，國內尚未訂定相關標準方法，國外已有相關方法且應用多年。本計畫擬參考相關標準方法，以抽氣式 FTIR 為分析儀器，評估其可行性，並實際進行檢測以評估其效果。HCl 可配置高濃度檢量線 (10 ~ 200 ppmv, r2 = 0.9993) 和低濃度檢量線 (1 ~ 20 ppmv，r2 = 0.9992)。NH3 亦可配置高濃度檢量線 (10 ~ 200 ppmv, r2 = 0.9993) 及低濃度檢量線 (1 ~ 20 ppmv，r2 = 0.9982)。偵測極限方面，依據自動檢測方法原則，HCl 為 0.10 ppmv，NH3 為 0.17 ppmv；依環境檢驗方法原則，HCl 為 0.176 ppmv，NH3為 0.230 ppmv。進行系統穩定性測試，HCl 和 NH3 的回收率分別為 100.17% ~ 103.75% 和 99.96~102.63%，皆符合 95~105% 效能規格。HCl 準確度為 100.74 ± 3.13%，精密度為 1.56%。NH3 準確度為101.48 ± 1.88%，精密度為 0.95 %。本計畫共進行 5 場次現場自動監測調查，進行校驗氣體分析，各廠現場校驗 「分析儀零點及校正誤差」(< ±2%)、「採樣系統零點及校正偏差」(< ±5%)、「零點及校正偏移」 (< ± 3%) 等性能皆符合規格。檢查現場監測之紅外光圖譜，將零點氣體導入分析儀時，圖譜無吸收峰出現，導入目標校正氣體 (氯化氫及氨氣) 則出現各別吸收特徵。排放管道實際監測之圖譜可發現氯化氫的吸收峰。現場監測實作結果量測期間排放管道 HCl 平均濃度介於 11 ~ 19 ppmv 之間，NH3 濃度皆小於 1 ppm。本方法在排放管道氣體監測具有高度的應用價值，但是 HCl 及NH3 等目標氣體為容易凝結或化學吸附的反應性物質，在實際監排放氣體濃度時仍有其困難度。 | ||
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| 中文關鍵字 | 排放管道、傅立葉轉換紅外光光譜分析法、自動監測技術 | ||
基本資訊
| 專案計畫編號 | EPA154108009 | 經費年度 | 108 | 計畫經費 | 2800 千元 |
|---|---|---|---|---|---|
| 專案開始日期 | 2019/03/11 | 專案結束日期 | 2019/12/31 | 專案主持人 | 宋隆佑 |
| 主辦單位 | 環檢所 | 承辦人 | 林志鴻 | 執行單位 | 工業技術研究院綠能與環境研究所 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 排放管道中氯化氫等自動監測調查技術開發_期末報告_(公開版).pdf | 6MB |
Development of Automatic Monitoring Technology for Hydrogen Chloride and Other Components from Stack Emission – Fourier Transform Infrared Spectroscopy Method (FTIR)
| 英文摘要 | It is important to achieve automatic monitoring of target gases (hydrogen chloride and ammonia) in stacks. The relevant local standard methods were not established, but such standards have already been applied abroad for years. This project refer to the relevant standard methods, using a closed-cell FTIR as an analytical instrument to evaluate the application of the stack emission gas monitoring for hydrogen chloride and ammonia, and evaluate the practicality of the method by field tests. Calibration curves were completed in laboratory, including the high concentration HCl (10 ~ 200 ppmv, r2 = 0.9993), low concentration HCl (1 ~ 20 ppmv，r2 = 0.9992), high concentration NH3 (10 ~ 200 ppmv, r2 = 0.9993) and low concentration NH3 (1 ~ 20 ppmv, r2 = 0.9982). The detection limit of HCl was 1.82 ppmv and NH3 was 1.78 ppmv, based on the principle of automatic detection method. The detection limit was 0.176 ppmv for HCl and 0.230 ppmv for NH3, based on the principle of environmental test method. The results of reproducibility test in recovery were 100.17% ~ 103.75% for HCl and 99.96~102.63% for NH3; all met the performance specification of 95~105%. The accuracies (100.74 ± 3.13% for HCl and 101.48 ± 1.88% for NH3) and precisions (1.56% for HCl and 0.95% for NH3) were good while proceeding the test. There were in total 5 field tests and all the results met the checking test requirements, including analyzer calibration error check (<± 2%), sampling system bias (<±5%) and calibration drift test (<± 3%). Checking the spectra from field measurements, there were no target gas absorbance peaks while introducing the zeroing-gas into the analyzer, but the respective peaks appeared while calibration gas was introduced. The hydrogen chloride absorbance peaks also appeared in the spectra of some stack emission gas. The average hydrogen chloride concentrations were variant between 11 ~ 19 ppmv, and the average ammonia concentration were all less than 1 ppmv. The method might be valuable for emission gas monitoring, but the condensation or chemical deposition of reactive HCl and NH3 make it difficult to determine the concentration of the target gas. | ||
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| 英文關鍵字 | Stack, Fourier Transform Infrared Spectroscopy, FTIR, Automatic Monitoring Technology | ||