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首页> 外文期刊>The Korean journal of chemical engineering >Biodiesel production from waste cooking palm oil using calcium oxide supported on activated carbon as catalyst in a fixed bed reactor
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Biodiesel production from waste cooking palm oil using calcium oxide supported on activated carbon as catalyst in a fixed bed reactor

机译：在固定床反应器中，使用负载在活性炭上的氧化钙作为催化剂，从烹饪用废棕榈油中生产生物柴油

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摘要

A reactor has been developed to produce high quality fatty acid methyl esters (FAME) from waste cooking palm oil (WCO). Continuous transesterification of free fatty acids (FFA) from acidified oil with methanol was carried out using a calcium oxide supported on activated carbon (CaO/AC) as a heterogeneous solid-base catalyst. CaO/AC was prepared according to the conventional incipient-wetness impregnation of aqueous solutions of calcium nitrate (Ca(NO_3)_2-4H_2O) precursors on an activated carbon support from palm shell in a fixed bed reactor with an external diameter of 60 mm and a height of 345 mm. Methanol/oil molar ratio, feed flow rate, catalyst bed height and reaction temperature were evaluated to obtain optimum reaction conditions. The results showed that the FFA conversion increased with increases in alcohol/oil molar ratio, catalyst bed height and temperature, whereas decreased with flow rate and initial water content in feedstock increase. The yield of FAME achieved 94% at the reaction temperature 60 ℃, methanol/oil molar ratio of 25 :1 and residence time of 8 h. The physical and chemical properties of the produced methyl ester were determined and compared with the standard specifications. The characteristics of the product under the optimum condition were within the ASTM standard. High quality waste cooking palm oil methyl ester was produced by combination of heterogeneous alkali transesterification and separation processes in a fixed bed reactor. In sum, activated carbon shows potential for transesterification of FFA.
机译：已经开发了一种反应器，用于从烹饪棕榈油的废料（WCO）生产高质量的脂肪酸甲酯（FAME）。使用负载在活性炭上的氧化钙（CaO / AC）作为非均相固体碱催化剂，将酸化油中的游离脂肪酸（FFA）进行连续酯交换反应。 CaO / AC是根据固定床反应器中棕榈壳上的活性炭载体上的活性炭载体上的硝酸钙（Ca（NO_3）_2-4H_2O）前体水溶液的常规初湿浸渍方法制备的，高度为345毫米。评价甲醇/油摩尔比，进料流速，催化剂床高度和反应温度以获得最佳反应条件。结果表明，FFA转化率随醇/油摩尔比，催化剂床层高度和温度的增加而增加，而随流速和原料中初始水含量的增加而降低。在60℃的反应温度，25：1的甲醇/油摩尔比和8h的停留时间下，FAME的收率达到94％。测定了所产生的甲酯的物理和化学性质，并与标准规格进行了比较。在最佳条件下的产品特性在ASTM标准之内。通过在固定床反应器中将异质碱的酯交换反应和分离过程相结合，可生产出高质量的废烹饪棕榈油甲酯。总而言之，活性炭显示出FFA酯交换的潜力。

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  • 来源
    《The Korean journal of chemical engineering》 |2012年第12期|1708-1712|共5页
  • 作者

    Achanai Buasri; Bussarin Ksapabutr; Manop Panapoy; Nattawut Chaiyut;

  • 作者单位

    Department of Materials Science and Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom 73000, Thailand,National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Bangkok 10330, Thailand;

    Department of Materials Science and Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom 73000, Thailand,National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Bangkok 10330, Thailand;

    Department of Materials Science and Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom 73000, Thailand,National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Bangkok 10330, Thailand;

    Department of Materials Science and Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom 73000, Thailand,National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Bangkok 10330, Thailand;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biodiesel; waste cooking palm oil; heterogeneous catalysis; fixed bed reactor;

    机译：生物柴油浪费烹饪用棕榈油;非均相催化固定床反应器;

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