کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
771740 1462859 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Continuous production of biofuel from refined and used palm olein oil with supercritical methanol at a low molar ratio
ترجمه فارسی عنوان
تولید پیوسته سوخت های زیستی از روغن پالم الیین پالین و استفاده شده با متانول فوق بحرانی با نسبت مولی کم
کلمات کلیدی
سوخت های زیستی، روند جریان مداوم، روغن نخل، روغن نخل استفاده شده متانول فوق بحرانی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


• Continuous production of biofuel in SCM at low molar ratio was studied.
• The actual density of mixture was applied to calculate residence times.
• The maximum FAME of 80–90% was observed for refined and used palm oils.
• The glycerol–methanol reaction showed a positive effect in fuel yield.

The high energy consumption and high environmental impact in the supercritical methanol (SCM) process primarily originates from the preheating of reactants and the recovery of excess alcohols. This work demonstrated the synthesis of biofuel using a lowered methanol to oil molar ratio of 12:1, instead of the 40:1–42:1 ratios that are commonly employed in conventional SCM. The apparent density of the reacting mixture was measured and applied to accurately calculate residence times in a continuous reactor. The effects of residence time were considered from 10 to 25 min. The results revealed that excessive residence times reduced the ester content, especially for unsaturated esters, in the resulting biofuel. A residence time of 20 min was recommended to simultaneously achieve a maximum ester content of 90% and a triglyceride conversion of up to 99%. Used palm olein oil with high free fatty acid (4.56 wt.%) can be employed as a feedstock and give a maximum ester content of 80%. In addition, the side reaction between glycerol and methanol at 400 °C and 15 MPa showed a positive effect in increasing fuel yield by 2%–7%.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 103, October 2015, Pages 934–942
نویسندگان
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