Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/95759
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dc.contributor吳耿東zh_TW
dc.contributor.author簡子喻zh_TW
dc.contributor.authorTzu-Yu Chienen_US
dc.contributor.other森林學系所zh_TW
dc.date2018zh_TW
dc.date.accessioned2018-10-12T03:58:22Z-
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dc.identifier.urihttp://hdl.handle.net/11455/95759-
dc.description.abstract氣化係指在高溫下進行非催化性部分氧化反應,將含碳物質轉換為氣態燃料;而第五類廢棄物衍生燃料(RDF, Refuse derived fuel)是將原料經過破碎、選別、乾燥和成型,將原本較為複雜的原料製成性質均勻和含水率低的錠型燃料。本研究旨在以紙廠之廢紙排渣及其造粒作為原料,於30 kWth氣泡式流體化床反應器中進行氣化實驗,探討原料型式、反應溫度、流體化數和空氣等值比等操作條件對氣化合成氣組成及熱值等之影響。 實驗結果顯示,廢紙排渣由於其蓬鬆且質輕的特性,無法直接以單螺桿進料器投料,而經造粒製成第五類廢棄物衍生燃料則能解決此類問題。在氣化溫度為700oC和800oC時,氫氣、一氧化碳、甲烷含量皆隨空氣等值比上升而下降;當氣化溫度提高到900oC,操作氣速為3.5倍最小流體化速度時,氫氣和甲烷含量隨空氣等值比提高而提高,而二氧化碳含量則下降;當空氣等值比為0.4時,氫氣含量隨氣速提高而增加,當氣速從2倍最小流體化速度提高到3.5倍,氫氣產量會從29.95%提高到42.37%,同時甲烷產量會從18.94%上升到25.85%,C2至C5的碳氫化合物產量則從16.47%下降到接近於零。zh_TW
dc.description.abstractGasification can be defined as a conversation procedure of carbonaceous feedstock into the gaseous fuel by partial oxidation at the elevated temperature. Densified refuse derived fuel (RDF-5) is a pre-treatment technology to make a complex materials into more uniform, lower moisture pelletized fuels. In this study, gasification of the paper reject and its pelletized RDF-5 were conducted in a 30 kWth bubbling fluidized bed gasification system to investigate the effects of operating conditions, e.g., feedstock form, gasification temperature, fluidization velocity, and equivalent ratio (ER) on syngas composition, syngas heating value, etc. The results show that the single screw type feeding system can be not fed the paper reject without palletization directly into the gasification reactor. Converting the paper reject into RDF-5 can address the feeding problem. Hydrogen, carbon monoxide and methane contents decrease with increasing the equivalent ratio (ER) at 700oC and 800oC. Hydrogen and methane contents increase and carbon dioxide content decreases with increasing the ER when operation gas velocity at 3.5 times minimum fluidization velocity and gasification temperature at 900oC. When gas velocity rises from 2 to 3.5 times minimum fluidization velocity, and equivalent ratio is equal to 0.4 at 900oC, hydrogen concentration rises from 29.95% up to 42.37%; methane concentration rises from 18.94% up to 25.85%; and the production of C2 to C5 hydrocarbons drops from 16.47% to near 0.en_US
dc.description.tableofcontents目錄 摘要………………………………………..……………………..…...i Summary………………………………..……………....…………...ii 目錄….……………………………………......................iii 表目次………………………………………..………………………...vi 圖目次……………………………………………..…………………..vii 第一章 前言……………...………………………..………………….1 第二章 文獻回顧………………………………..……...…………….3 2.1 生質能…………………………………….…...................3 2.2 氣化技術………………………………….…...................5 2.2.1 氣化技術之歷史…………………………………..…5 2.2.2 氣化技術介紹……………………………….….…..5 2.2.3 氣化反應器………………………………..………..7 2.2.4 焦油……………………………………………..…..9 2.3廢棄物衍生燃料燃料…………………………………...10 2.3.1衍生燃料技術…………………………………..….10 2.3.2 第五類廢棄物衍生燃料…………………………..11 2.4 第五類廢棄物衍生燃料氣化…………………13 第三章 材料與方法…………………………………………..………22 3.1 實驗材料………………….……………………....……..22 3.1.1 原料………………………………………..……....22 3.1.2原料近似分析與元素分析……………….………..22 3.2氣化實驗設備…………………………………………....30 3.2.1 氣化反應器…………………………….………….32 3.2.2 床質……………………………………….……….32 3.2.3空氣供給系統……………………………….……..32 3.2.4焦油採集設備……………………………….……..32 3.2.5合成氣分析裝置…………………………….….….33 3.2.6 氣化實驗步驟……………………………….…….36 3.3 實驗操作條件…………………….……………………..36 3.3.1 氣化條件………………….…………………….....36 3.3.2空氣等值比……………………………………..….39 3.3.3 氣化溫度………………………..………………....39 3.3.4 氣速條件………………………………………..…39 3.3.5造粒………………………………………………...39 第四章 結果與討論…………………………………………………..41 4.1 原料分析………………………………………………...41 4.2 廢紙排渣直接氣化……………………………………...44 4.3 氣速條件設定…………………………………………...47 4.4 合成氣氣體組成………………………………………...50 4.4.1氣化溫度對合成氣組成之影響…………………...50 4.4.2 ER值對合成氣組成之影響……………………….54 4.4.3 氣速對合成氣組成之影響………………………..58 4.5氣化溫度對熱值之影響……………...………..…………62 4.6合成氣焦油含量………………………………….………65 第五章 結論與建議…………………………………………………..68 5.1 結論……………………………………………………...68 5.2 建議……………………………………………………...69 參考文獻………………………………………………………………70 作者自述………………………………………………………………74zh_TW
dc.language.isozh_TWzh_TW
dc.rights同意授權瀏覽/列印電子全文服務,2021-02-07起公開。zh_TW
dc.subject廢紙排渣zh_TW
dc.subject第五類廢棄物衍生燃料zh_TW
dc.subject流體化床zh_TW
dc.subject氣化zh_TW
dc.subject合成氣zh_TW
dc.subjectPaper rejecten_US
dc.subjectdensified refuse derived fuel (RDF-5)en_US
dc.subjectfluidized beden_US
dc.subjectgasificationen_US
dc.subjectsyngasen_US
dc.title廢紙排渣於流體化床進行氣化之研究zh_TW
dc.titleGasification of Paper Reject in a Fluidized Beden_US
dc.typethesis and dissertationen_US
dc.date.paperformatopenaccess2021-02-07zh_TW
dc.date.openaccess2021-02-07-
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item.openairetypethesis and dissertation-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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