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Recovery of side streams in biodiesel production process

机译：在生物柴油生产过程中回收侧流

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摘要

Biodiesel is a cleaner burning diesel alternate fuel produced from lipid feedstocks through the transeste-rification process with alcohol and catalyst. In this study, high free fatty acid Jatropha curcas oil was pretreated using sulfuric acid and methanol. The pretreated oil was transesterifled with methanol (6:1) and sodium hydroxide solution at 60 ℃ for 2 h. The yield of biodiesel was 96%. The recoverable methanol from biodiesel and glycerol was measured as 2.61% and 21.5%, respectively. The permissible limit of methanol in biodiesel is 0.2 wt%. A reactor was developed for the methanol recovery from biodiesel and glycerol. The recovered methanol was 2.3% and 27.38% in biodiesel and glycerol, respectively. After the recovery the biodiesel had 0.154 wt% methanol, which is less than the limit prescribed by ASTM standards. The methanol recovered glycerol was purified at vacuum conditions to produce pure glycerol. Thus the recovery of methanol from biodiesel and glycerol improved the quality of fuel, reduced the production cost through Recycling of methanol and value addition to glycerol.
机译：生物柴油是一种清洁燃烧的柴油替代燃料，它是由脂质原料经过酒精和催化剂的酯交换过程制得的。在这项研究中，使用硫酸和甲醇对高游离脂肪酸麻风树麻疯树油进行了预处理。将预处理过的油在60℃下与甲醇（6：1）和氢氧化钠溶液酯交换2小时。生物柴油的产率为96％。从生物柴油和甘油中回收的甲醇分别测得为2.61％和21.5％。生物柴油中甲醇的允许限量为0.2 wt％。开发了用于从生物柴油和甘油中回收甲醇的反应器。在生物柴油和甘油中回收的甲醇分别为2.3％和27.38％。回收后，生物柴油中甲醇的含量为0.154 wt％，小于ASTM标准规定的限值。在真空条件下纯化回收的甲醇的甘油，以产生纯甘油。因此，从生物柴油和甘油中回收甲醇可改善燃料质量，通过回收甲醇和增值甘油来降低生产成本。

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  • 来源
    《Fuel》 |2014年第ptaa期|103-108|共6页
  • 作者

    R. Mythili; P. Venkatachalam; P. Subramanian; D. Uma;

  • 作者单位

    Department of Bioenergy, TamilNadu Agricultural University, Coimbatore, India;

    Department of Bioenergy, TamilNadu Agricultural University, Coimbatore, India;

    Department of Bioenergy, TamilNadu Agricultural University, Coimbatore, India;

    Department of Bioenergy, TamilNadu Agricultural University, Coimbatore, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Free fatty acid; Biodiesel; Glycerol; Methanol recovery;

    机译：游离脂肪酸;生物柴油甘油;甲醇回收;

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