臺灣能源期刊發行
- 創刊日期：
102年11月30日
- 發行所：
經濟部能源署
- 發行人：
游振偉
- 地址：
台北市復興北路2號13樓
- 電話：
02-2772-1370
- 執行單位：
財團法人工業技術研究院
- 地址：
新竹縣竹東鎮中興路四段195號26館
- 服務專線：
03-5916006
- 服務信箱：
- 總編輯：
王漢英胡均立
- 顧問：
王運銘童遷祥楊日昌
- 執行主編：
劉子衙陳志臣
- 編輯委員：
方良吉王錫福李堅明李叢禎林師模馬鴻文陳介力陳希立廖芳玲廖肇寧劉文獻蕭志同顧洋(依筆畫順序排列)
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臺灣能源期刊論文全文
臺灣能源期刊第4卷第2期內容
出刊日期：June,2017
- 題目
- 量產製備之Fe2O3/SiO2吸附劑應用於高溫固態脫硫研究
- Title
- Study on Solid Desulfurization at Elevated Temperature with Fe2O3/SiO2 Sorbents from Large-scale Production
- 作者
- 簡郁展、簡綉雲、邱耀平
- Authors
- Yu-Jhan Jian, Hsiu-Yun Chien, Yau-Pin Chyou
- 摘要
- 氣化技術使用氣化爐將固態燃料轉化為合成氣(syngas)，在轉化過程中產生的污染物則經由淨 化程序一併去除；而獲得之潔淨氣體產物可供作後續多元應用，如複循環發電、轉化成化工產品、 發展氫能源等。本文撰述重點為固態脫硫技術，希望能提升系統節能與程序優化。煤炭氣化後產生 的硫化物以硫化氫(H2S)與硫化羰(COS)為主要成分。目前中高溫脫硫技術採用具再生特性的金屬氧 化物作為吸附劑，進行硫化物的吸附與再生程序；相較於低溫洗滌方式，除了避免廢水二次污染問 題，可有較佳的系統熱效率，還具備再生的成本優勢。本研究團隊已成功以濕式含浸法製備Fe2O3/ SiO2吸附劑，並於實驗級反應器中反覆試驗展現良好效能，遂進行吸附劑大規模化生產。經團隊 研發量產機台所製備之吸附劑，其氧化物負載比例為20.14%，比表面積為192 m2/g，硫吸附容量為 6.81 g-S/100 g sorbent，其物性特徵與化學性能測試結果，皆與實驗室規模所合成之吸附劑特性相 似。另亦透過多次再生循環試驗，展現其良好吸附穩定性，十次循環穩定性皆能維持90%以上。透 過該大規模生產程序吸附劑除保有原優良脫硫品質，其具有穩定供貨量、縮短製備時間及降低製程 成本等優點，使團隊自行研發吸附劑的發展更具競爭優勢，未來亦可推廣至既有的發電廠、化工廠 或煉鋼廠等產業使用。
- 關鍵字
- 吸附劑、硫化氫、貫穿時間、吸附容量
- Abatract
- Gasification technology utilizes gasifiers to convert carbonaceous solid fuels into syngas that needs gas cleanup for subsequent applications, such as conversion for chemicals, power generation, hydrogen production, etc. This work is devoted to the study of solid desulfurization technology that can increase thermal efficiency, reduce power generation cost, and protect the environment. During gasification processes, most of the sulfur in coal is turned into hydrogen sulfide (H2S) and carbonyl sulfide (COS). Dry desulfurization technology at elevated temperature can be implemented with regenerable metal oxides as sorbents, undergoing desulfurization-regeneration cyclic processes; as compared to low-temperature options with solvents, it avoids waste water issues, while features better system thermal efficiency and cost advantage via regeneration. Preliminary studies on the performance of desulfurization sorbents, synthesized by incipient wetness impregnation method, have been successfully carried out at the Institute of Nuclear Energy Research (INER) for years. In response to the desulfurization tests for a large-scale reactor in the future, mass production of sorbents is required. In this paper, desulfurization performance of iron-based sorbents by the mass-production process will be discussed. In this study, the physical properties of massproduced sorbents were analyzed by various characterization apparatus; moreover, the chemical properties were tested by removing hydrogen sulfide from simulated syngas down to ppm levels in a fixed-bed reactor. The result showed that the iron-based sorbents exhibited good sulfur capture ability and could maintain the similar properties like those from lab-scale synthesis. The main components of mass-produced sorbents are Fe2O3 and silica, in which the content of effective metal oxides reached approximately 20% and the sorbent featured a high surface area around 192 m2/g; furthermore, the breakthrough time was about 39 minutes, corresponding to sulfur capacity of 6.81 g-S/100 g sorbent. Following the characterization studies, redox cycling tests were conducted and good stability was achieved, from which the 10-cycle stability maintained beyond 90%. Through large-scale production process, the synthesis time and process cost could be reduced, which provides competitive advantage for indigenously developed sorbents. The H2S removal properties of the mass-produced sorbent seem promising for application in clean coal technology fields.
- Keywords
- Sorbent, Hydrogen sulfide, Breakthrough time, Sulfur capacity