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題 名 | Concentration and Recovery of SO₂from Flue Gas by Pressure Swing Adsorption=利用變壓吸附濃縮及回收煙道氣中二氧化硫 |
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作 者 | 黃文建; 陳朝鈺; 周正堂; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 37:2 民95.03 |
頁 次 | 頁149-157 |
分類號 | 445.63 |
關鍵詞 | 變壓吸附; 二氧化硫; 煙道氣; SO₂; Pressure swing adsorption; Numerical experiment of statistical design; |
語 文 | 英文(English) |
中文摘要 | 危害環境的酸雨主要來自於空氣中的污染物,如S□ N□等。而大部分的S□都 是由發電廠所排放出來,只要能控制S□的排放就能減少酸雨所造成的污染。變壓吸附(PSA)是一種能有效地由煙道氣中濃縮及回收S□的技術。本研究係利用模擬設計三塔PSA 程序來回收煙道氣中S□。在研究中所使用的吸附劑為NO-treated XAD-16。由於煙道氣中的N□少於0.5%,所以我們把進料成分設定由17% C□、0.5% S□和82.5% N□所構成。本研究利用統計學上的實驗設計方法來尋找最適化操作條件。此實驗中使用的正交表法是建立在研究五種不同因素上,而每一種因素有三個等級。這五種因素包括進料壓力、三步驟時間(T1、T2、T3)和P/F比。根據統計分析的結果顯示,其最適化的操作條件是操作壓力為1.8atm,P/F比為0.03,T1、T2、T3分別為32秒、35秒、50秒。在上述的最適化操作條件下,所獲得的出料S□濃度為15.84%,而S□回收率則達99.79%。 |
英文摘要 | Acid rain is harmful to the environment. The cause of acid rain is mainly from air pollutants, such as S□, N□ etc. Due to the fact that most S□ is emitted from power plants, the control of S□ emissions from power plants can reduce acid rain pollution. Pressure swing adsorption (PSA) is an efficient technology for the concentration and recovery of S□ from flue gas. This simulation study employs a threee0bed PSA process designed to concentrated and recover S□ from flue gas. The adsorbent utilized in this study is NO-treated XAD-16. There is less than 0.5% N□ in flue gas, so we used feed that is assumed to consist of 17%C□, 0.5% S□ and 82.5%□. Statistical design is utilized to find the optimum cooperating condition for the study. Numerical experiments using the method of orthogonal table are set up to study the effects of five factors, with three levels for each factor. The five factors are: the feed pressure, three step times (including T1 time, T2 time, and T3 time), and the P/F ration, which is defined as the ratio of the amount of the purge gas stream to that of the feed gas stream. According to the results of the statistical analysis, following optimal operating conditions are obtained: the feed pressure is 1.8 atm; the P/F ratio is 0.03; and the three step times, T1, T2, and %3 are 32 s, 35 s, and 50 s, respectively. The concentration of S□ in the product stream is 15.84% at optimum operating conditions, and the S□ recovery is 99.79%. |
本系統中英文摘要資訊取自各篇刊載內容。