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研究生： 關永豪
Kuan, Yong-Hao
論文名稱： 重油摻混生活污泥裂解油之加熱特性分析
Heating Characteristics of Sewage Sludge Pyrolysis Oil Mixed with Heavy Fuel Oil
指導教授： 林大惠
Lin, Ta-Hui
學位類別： 碩士
Master
系所名稱： 工學院 - 機械工程學系
Department of Mechanical Engineering
論文出版年： 2017
畢業學年度： 105
語文別： 英文
論文頁數： 117
中文關鍵詞： 下水污泥 、污泥熱解油 、重油 、燃燒特性 、熱重分析 、單顆懸掛液滴
外文關鍵詞： Sewage Sludge, Sludge Pyrolytic Oil, Heavy Fuel Oil, Combustion Characteristics, Thermogravimetric Analysis, Suspended Droplet
相關次數： 點閱：167  下載：11 
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    • 本研究主要探討乾燥下水污泥(DSS)、 污泥熱解油(SPO)、重油(HFO)及SPO/HFO混合燃料的燃燒特性。 首先，分析乾燥下水污泥和污泥熱解油的性質，並與澳洲煤及重油進行比較。再藉由熱重分析(TGA)結果計算不同燃料的燃燒特性參數，包括:點火溫度(Ti)，燃盡溫度(Te)，可燃性指數(C)以及綜合燃燒特性指數(S)。除此之外，本研究也透過單顆懸掛液滴實驗觀察各燃料之加熱特性，實驗之環境溫度為500°C、550°C及600°C。
    TGA實驗結果顯示DSS、SPO 以及SPO 與HFO 的混合物的燃 燒反應可分為三個階段： 脫水階段，揮發份釋出與燃燒階段，以及重質成份(HWC)燃燒階段。 此外，提高混合燃料中的SPO 比例可提高燃料於揮發份釋出與燃燒階段之C與S值，然而，對於HWC燃燒階段之反應則無明顯不同。單顆懸掛液滴實驗結果顯示混摻越多的SPO到SPO/HFO混合燃料當中可以提升燃料的燃燒速率。整體而言，將SPO加入HFO中有助於提高燃燒特性。

    An investigation was performed into the heating characteristics of dried sewage sludge (DSS), sewage sludge pyrolysis oil (SPO), heavy fuel oil (HFO), and fuel blends consisting of SPO mixed with HFO (SPO/HFO fuel blend). The properties of DSS and SPO were analyzed and compared with those of Australia coal and HFO. The ignition temperature (Ti), burnout temperature (Te), flammability index (C) and combustion characteristics index (S) of the various fuels were evaluated by means of thermogravimetric analysis (TGA). Furthermore, the heating behaviors of the SPO droplet, HFO droplet and SPO/HFO fuel blend droplets were observed at ambient temperatures of 500°C, 550°C and 600°C using a suspended droplet experimental method. The TGA results showed that the combustion process of the DSS, SPO and SPO/HFO fuel blends comprises three main stages, namely dewaterization stage, volatile decomposition and burning stage, and combustion stage. In the decomposition stage, the fuel blends with a higher SPO content exhibited greater C and S values due to the release and oxidation of the lightweight components (LWC). However, their C and S were quite similar for the highweight components (HWC) that burnout in the combustion stage. The suspended droplet experiments showed that the addition of a greater amount of SPO to the SPO/HFO fuel blend was beneficial in improving the combustion rate. In general, adding any quantity of SPO to the SPO/HFO fuel blend enhances the combustion efficiency.

    Contents I List of table IV List of figure V Nomenclature VIII 1. Introduction 1 1.1 Global Energy Problem 1 1.2 Global Sludge Problem 2 1.2.1 Sewage Sludge in Taiwan 3 1.2.2 Composition of the Sewage Sludge 4 1.2.3 Existing Regulations Pertaining to Sewage Sludge 4 1.2.3.1 Agricultural Use 5 1.2.3.2 Incineration 6 1.2.3.3 Landfill 8 1.3 Sewage Sludge Pyrolysis 8 1.4 Droplet Vaporization and Combustion 10 1.4.1 Fuel Droplet with Single Component 11 1.4.2 Fuel Droplet with Multi-components 12 1.5 Motivation and Objectives of the Study 12 2. Experimental Methods and Materials 14 2.1 Fuels 14 2.1.1 Heavy Fuel Oil 14 2.1.2 Sewage Sludge 14 2.1.3 Sludge Pyrolysis Oil 14 2.1.4 Fuel Blends 16 2.2 Elemental Analysis 16 2.3 Thermogravimetric Analysis 17 2.4 Ignition Temperature 18 2.5 Burnout Temperature 19 2.6 Proximate Analysis 20 2.7 Heating Value Analysis 21 2.8 Viscosity Measurement 22 2.9 Combustion Characteristics Parameters 22 2.10 Suspended Droplet Experiments 24 3. Results and Discussion 27 3.1 Fuel Properties 27 3.1.1 Dried Sewage Sludge 27 3.1.2 Heavy Fuel Oil and Sludge Pyrolysis Oil 28 3.2 Thermogravimetric Analysis 30 3.2.1 Dried Sewage Sludge 30 3.2.2 Heavy Fuel Oil 31 3.2.3 Sludge Pyrolysis Oil 33 3.2.4 20% SPO + 80% HFO 35 3.2.5 40% SPO + 60% HFO 37 3.2.6 50% SPO + 50% HFO 39 3.2.7 60% SPO + 40% HFO 42 3.2.8 80% SPO + 20% HFO 44 3.2.9 Comparison of TGA Results 46 3.2.9.1 TG Result 46 3.2.9.2 DTG Result 47 3.2.9.3 DSC Result 48 3.3 Combustion Characteristic Parameters 49 3.3.1 Dried Sewage Sludge 49 3.3.2 Heavy Fuel Oil and Sludge Pyrolysis Oil 50 3.3.3 Fuel Blend with Different SPO/HFO Ratio 51 3.4 Suspended Droplet Experiments 52 3.4.1 Fuel Droplet Heating Behavior 52 3.4.2 500°C Ambient Temperature 54 3.4.3 550°C Ambient Temperature 55 3.4.4 600°C Ambient Temperature 56 3.4.5 Comparison of Suspended Droplet Experiments Results 57 3.4.6 Vaporization Rate and Combustion Rate 58 4. Conclusions 60 4.1 Fuel Properties 60 4.2 Combustion Characteristics Parameters 61 4.3 Suspended Droplet Experiments 61 5. References 63

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