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題名 | 生質煤/鐵礦複合球團之碳熱還原反應效率評估=Evaluation of the Carbothermic Reduction Efficiency of Bio-coal / Iron Ore Pellets |
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作者姓名(中文) | 盧科妙; 劉世賢; 蕭嘉賢; | 書刊名 | 鑛冶 |
卷期 | 59:2=230 2015.06[民104.06] |
頁次 | 頁59-64 |
分類號 | 454.81 |
關鍵詞 | 碳熱還原; 生質煤; 焙燒; Carbothermic reduction; Biomass; Torrefaction; |
語文 | 中文(Chinese) |
中文摘要 | 本研究以焙燒油棕生質煤取代傳統煤 炭作為碳熱還原之還原劑及部分熱量來源, 結合新能源材料及新煉鐵製程技術,以輕度 (250℃ )、中度 (350℃ ) 及重度 (450℃ ) 焙燒 生質物 30 分鐘來產製生質煤,再以不同生 質煤與鐵礦配製為煤鐵複合球團,進行碳熱 還原反應特性評估。本研究結果指出,使用 生質物經焙燒後產製之生質煤,進行鐵礦碳 熱還原反應所獲得之鐵金屬化率,與使用商 用煤做為還原劑者接近 (95.9±0.8%);其中 以中度焙燒生質煤表現最佳,其在本研究試 驗基礎下,可節省 23.6 g/100g Fe 之最初生 質物原料量;並較使用商用煤煉鐵,可縮短 2.2 min/100g Fe 之反應時間。本研究證實焙 燒生質煤應用於鐵礦碳熱還原煉鐵技術確實 可行,此法將可大幅降低傳統煉鐵製程 CO2 之排放。 |
英文摘要 | In this study, the torrefied bio-coal was used to replace the commercial coal as a reduction agent and to provide part of heat source for carbothermic reduction. Biomass was torrefied at 250, 350 and 450℃ for 30 min to produce torrefied bio-coals. Then, coal/ iron ore pellets were prepared from biomass, various torrefied bio-coals, commercial coals and iron ore powder to evaluate the carbothermic reduction efficiency. Experimental results showed that the iron metallization degrees (95.9±0.8%) of the bio-coal cases were comparable with that of commercial coal cases. The best performance case was torrefied bio-coal/ iron ore pellet made at 350℃. The best case saved 23.6 g/100g Fe of raw biomass and 2.2 min/100g Fe over that with commercial coal. The experimental results also showed that the innovative technology significantly reduced CO2 emissions. |
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