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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 郭修伯(Hsiu-Po Kuo) | |
| dc.contributor.author | Wei-Jhih Liao | en |
| dc.contributor.author | 廖偉智 | zh_TW |
| dc.date.accessioned | 2022-11-25T03:04:06Z | - |
| dc.date.available | 2023-12-31 | |
| dc.date.copyright | 2021-11-09 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-08-04 | |
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In-depth investigation of biomass pyrolysis based on three major components: Hemicellulose, cellulose and lignin, Energy Fuels, 20: 388-93. 李致廷. 2019. 氣泡式流體化床中生質物快速熱裂解之反應流體力學數值模擬, 長庚大學. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/81810 | - |
| dc.description.abstract | "本論文以計算流體力學(Computational Fluid Dynamics, CFD) 歐拉多相流模擬(Eulerian multiphase simulation)氣泡式流體化床中的生質物快速熱裂解行為，並採用了顆粒動力學理論(Kinetic theory of granular flows, KTGF)考慮固體相、Miller and Bellan (1997)反應動力學模型考慮生質物三成分(纖維素、半纖維素、木質部)的二階段熱裂解反應。研究分別採用3相模型(混合氣相、床質相、生質物相)與4相模型(混合氣相、床質相、生質物相、焦炭相)進行多相流模擬。當氣體流速為0.36 m/s，3相模擬、4相模型、實驗(Xue et al. 2012)的生質油、合成氣和焦炭的質量產率分別為70.8%、16.1%、13.1%；70.7%、16.2%、13.1%；71.7±1.4%、20.5±1.3%、13.5±1.5%，產率模擬結果得到實驗的驗證。細部模擬結果分析，發現現有系統設計有尚未轉化的活化木質素離開反應器，且二次熱裂解於空床區持續發生將生成的生質油裂解為合成氣，導致生質油產率無法再提升。 本研究為了提高生質油產率，嘗試透過改變底部進氣流速改變滯留時間、反應器上半部溫度增加活化木質素一次裂解、或加入螺旋導板增加活化木質素滯留時間。結果顯示，加入螺旋導板、底部進氣流速為0.56 m/s時，生質油的產率提高至75.4%，可較原有操作時的生質油產率提升6.6%。 " | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-25T03:04:06Z (GMT). No. of bitstreams: 1 U0001-0308202111324000.pdf: 15018720 bytes, checksum: 1b0c274956d5c88e61b613665674c5d0 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 目錄 目錄 i 圖目錄 iii 表目錄 xvi 第一章 緒論 1 第二章 文獻回顧 3 2.1 替代能源-生質物 3 2.2生質物組成 3 2.3 熱處理 5 2.3.1 焙燒 (Torrefaction) 6 2.3.2 氣化 (Gasification) 6 2.3.3 熱裂解 (Pyrolysis) 6 2.4 流體化床 8 2.5 快速熱裂解在流化床的模擬 11 2.5.1 多相流計算模型 11 2.5.2 熱裂解反應動力學模型 13 2.6 文獻中的生質物快速熱裂解的CFD模擬 17 第三章 模擬方法 21 3.1 反應器結構和邊界條件 22 3.2 尤拉多相流運動模型 24 3.3 顆粒動力學模擬 29 3.4 反應動力學 35 3.5建模計算方法 39 3.6 後處理 40 3.6.1產率 40 3.6.2物質分布、運動行為、溫度分布與反應發生 41 第四章 結果與討論 42 4.1 二維模擬 42 4.2 三維模擬 (3相與4相) 48 4.3 流體化氣速的影響 61 4.4 反應器上半部壁溫的影響 95 4.5 加入螺旋導板 124 第五章 結論 156 參考文獻 159 | |
| dc.language.iso | zh-TW | |
| dc.subject | 氣泡式流體化床 | zh_TW |
| dc.subject | 計算流體力學 | zh_TW |
| dc.subject | 生質物快速熱裂解 | zh_TW |
| dc.subject | 歐拉多相模型 | zh_TW |
| dc.subject | Computational Fluid Dynamics (CFD) | en |
| dc.subject | Bubbling Fluidized Bed (BFB) | en |
| dc.subject | Eulerian multiphase modeling | en |
| dc.subject | Biomass fast pyrolysis | en |
| dc.title | 以CFD耦合反應動力學模擬生質物於氣泡式流化床反應器之快速熱裂解 | zh_TW |
| dc.title | Modeling of Biomass Fast Pyrolysis in a Bubbling Fluidized Bed Using CFD Coupling Reaction Kinetics | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林祥泰(Hsin-Tsai Liu),黃安婗(Chih-Yang Tseng) | |
| dc.subject.keyword | 計算流體力學,生質物快速熱裂解,歐拉多相模型,氣泡式流體化床, | zh_TW |
| dc.subject.keyword | Computational Fluid Dynamics (CFD),Biomass fast pyrolysis,Eulerian multiphase modeling,Bubbling Fluidized Bed (BFB), | en |
| dc.relation.page | 161 | |
| dc.identifier.doi | 10.6342/NTU202102030 | |
| dc.rights.note | 同意授權(全球公開) | |
| dc.date.accepted | 2021-08-05 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 化學工程學研究所 | zh_TW |
| dc.date.embargo-lift | 2023-12-31 | - |
| 顯示於系所單位： | 化學工程學系 | |
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| U0001-0308202111324000.pdf | 14.67 MB | Adobe PDF | 檢視/開啟 |
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