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標題: | 以水熱法進行不同性質生質物液化轉製液體燃料之研究 Conversion of Biomass to Manufacture Liquid Bio-fuel via Hydrothermal Liquefaction |
作者: | Chi-Pai Chen 陳麒百 |
指導教授: | 張慶源(Ching-Yuan Chang) |
關鍵字: | 竹筷,藻類,水熱,生物油,液態燃料, Hydrothermal liquefaction (HTL),bamboo chopsticks,algae powder,biomass,biofuel,liquid fuel, |
出版年 : | 2015 |
學位: | 碩士 |
摘要: | 為了達到永續發展的目的,永續能源的開發為現今研究的熱門議題,其中生質能源的開發頗受外界矚目。在本研究當中是著重在於利用熱轉換方法當中的水熱法將生質物轉換成液態生質能源,然而影響水熱法的因素有很多種,包含了反應溫度、反應時間、加熱速率、原物料組成與原料粒徑、反應槽填充的氣體以及催化劑的使用和使用催化劑的種類。在這個研究當中是著重於反應溫度、反應時間、原物料組成以及催化劑的使用四個影響因素來進行反應變因的改變,並且探討實驗所產生的生物油產物(BO)、液體產物(WSO)、固體產物(SP)以及氣體產物和反應變因之間的關聯。
在各產物當中BO為本研究的目標產物。研究顯示以藻類為原料可以有較高的BO產率和較高的BO熱值,在不加入催化劑的情況下就可以有22.31 wt.%的產率和9,184.17 kcal kg-1的熱值,加入催化劑之後BO產率更可以增加到24.61 wt.%而熱值提高到9,328.32 kcal kg-1。用竹筷為原料得到的BO產率和熱值皆偏低,不加催化劑頂多只有3.83 wt.%的產率以及7,393.35 kcal kg-1的熱值,然而催化劑的加入對於結果影響很大,可以將BO產率提升到21.24 wt.%,熱值升高到8088.18 kcal kg-1。可見催化劑對於結果的影響和使用的原料有很大的關聯,而相較於催化劑和原料對於結果的影響,反應溫度以及反應時間影響實驗結果較小。 然而在模擬蒸餾的結果表示,用藻類生產的BO其性質與我們日常所用的液態燃料(例如航空油、柴油、煤油)有比較大的差距,反而是用竹筷生產之BO性質與煤油和重油較為接近,而催化劑的加入更是可以使BO的性質與液態燃料更加接近。 Since the decrease of fossil fuel, the development of renewable energy is concerned around the world. In this research, we are going to talk about the method of transforming biomass into bioenergy. The way we use is hydrothermal liquefaction (HTL), one of thermochemical methods. And the impact factors of HTL include reaction time, reaction temperature, heating rate, type of materials, diameter of materials, initial gas in reactor and the type of catalysts. The products of HTL contain acetone soluble solids (BO), water soluble organics (WSO), solid product (SP) and gas product. In my experiments, I want to Fig. out how reaction time, reaction temperature, type of materials and type of catalysts affect the outcomes. The most important product of HTL is BO. And the results of BO show that the used of algae powder (AP) will lead to higher yield of BO and higher BO heating value. Without the adding of catalyst, the yield of BO can be 22.31 wt.% and the BO heating value is 9184.17 kcal kg-1 high. After adding the catalyst, yield can even reach 24.61 wt.% and the heating value can become 9328.32 kcal kg-1. If replacing AP with bamboo chopsticks (BC), the yield of BO is only 3.83 wt.% low and the BO heating value is only 7393.35 kcal kg-1. However, the adding of catalyst can lead to a big change of BO yield and heating value of BC HTL results. The BO yield can reach 21.24 wt.% and BO heating value can become 8088.18 kcal kg-1 after catalyst being added. Although the heating value of BO from AP is high, the simulated distillation (SDT) result shows that the property of it is not as good as BO from BC. SDT results indicate that the use of BC and adding of catalyst can improve the property of BO and make it more similar to the liquid fuels we used, like kerosene and heavy oil etc. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53829 |
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顯示於系所單位: | 環境工程學研究所 |
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