English  |  正體中文  |  简体中文  |  Items with full text/Total items : 65275/65275 (100%)
Visitors : 20971491      Online Users : 291
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65977


    Title: ANALYSIS OF FAST PYROLYSIS PHENOMENA IN FLUIDIZED BED REACTOR OF PALM KERNEL SHELL (PKS) BIOMASS;ANALYSIS OF FAST PYROLYSIS PHENOMENA IN FLUIDIZED BED REACTOR OF PALM KERNEL SHELL (PKS) BIOMASS
    Authors: 安普納;SUARSANA,PURNA ANUGRAHA
    Contributors: 機械工程學系
    Keywords: 生質油;生質能 棕梠殼;Fast pyrolysis;PKS biomass
    Date: 2014-08-04
    Issue Date: 2014-10-15 17:19:41 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本研究為快速熱解棕櫚殼製成的生質燃料,並藉由改變通入氣體的溫度、速度,以及生質燃料的質傳速率,討論快速熱解所生成的結果,而研究的分析方法採用尤拉近似法。參數設定:氣體溫度分別為723, 743, 763 K,速度為0.059, 0.088, 0.117 m/s;生質燃料質傳速率則為2.42, 3.63, 4.84 g/s。
    藉由CFD模擬結果討論通入氣體的溫度與速度及質量流率對於快速裂解的產物影響分析。當增加通入氣體的溫度時,焦油所占之質量比例會上升,而碳灰及氣體之質量比例則減少;在氣體溫度為763 K時,焦油的質量比為49.26 %,碳灰與氣體分別為27.78 %及22.96 %。隨著通入氣體速度提升,焦油質量比例上升,而碳灰及氣體之質量比減少;當速度大於0.088 m/s時,所得到的結果則相反,其中在速度為0.088 m/s時,焦油、碳灰與氣體的質量比分別為50.09 %、27.06 %與22.86 %。當生質燃料質傳速率提升,焦油的質量比例增加,而碳灰與氣體則減少,當質傳速率為4.84 g/s時,焦油、碳灰與氣體的質量比例分別為50.36 %、26.89 % 與22.77 %。;The fast pyrolysis phenomena in fluidized bed reactor of Palm Kernel Shell such as the effect of temperature fluidization gas, velocity fluidization gas and mass flow rate of biomass on product yield of fast pyrolysis PKS biomass were investigated based on the Euler-Euler approach in this work. The temperature of fluidization is varied of 723, 743 and 763K. The velocity of fluidization gas is varied of 0.059, 0.088 and 0.117 m/s. The mass flow rate is varied of 2.42, 3.63 and 4.84 g/s.
    Result of CFD simulation studies is: the temperature of fluidization gas, velocity of fluidization gas and mass flow rate of biomass is effect on product yield of fast pyrolysis PKS Biomass. The increasing temperature of fluidization gas is lead to increasing of mass fraction tar and decreasing of mass fraction char and gas. At temperature 763K, the mass fraction of tar is 49.26%, mass fraction of char and gas are 27.78% and 22.96%. The increasing velocity of fluidization gas is lead to increasing tar and decreasing mass fraction of char and gas until velocity of 0.088m/s, after that the trend of product yield fast pyrolysis is vice versa. At velocity 0.088m/s, the mass fraction of tar, char and gas are 50.09%, 27.06% and 22.86%. The increasing mass flow rate of biomass is lead to increasing the mass fraction of tar and decreasing mass fraction of char and gas. At the mass flow rate 4.84 g/s, the mass fraction of tar, char and gas are 50.36%, 26.89% and 22.77%.
    Keywords: Fast pyrolysis, PKS biomass, fluidized bed, product yield
    Appears in Collections:[機械工程研究所] 博碩士論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML319View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明