کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8078100 | 1521478 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of heating rate on biomass liquefaction: Differences between subcritical water and supercritical ethanol
ترجمه فارسی عنوان
تأثیر میزان گرما در روانکاری زیست توده: تفاوت بین آب زیرکریتی و اتانول فوق بحرانی
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کلمات کلیدی
تبدیل به مایع، آب زیرکریتی، اتانول فوق بحرانی، نرخ گرمایش، مکانیسم روان سازی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
This study investigates the influence of heating and cooling rate on liquefaction of lignocellulosic biomass in subH2O (subcritical water) or in scEtOH (supercritical ethanol), in dependency of final reaction temperatures (250-350 °C) and residence times (1-40 min). The heating rate has been identified as a crucial parameter in the subH2O-based liquefaction, whereas it has marginal influence in the scEtOH-based liquefaction. Detailed characterization of gas, liquid and solid products enables to identify the individual reaction steps, which results in a new insight into the reaction mechanisms, depending on the liquefaction solvents and conditions. Similar to fast pyrolysis, hydrothermal liquefaction consists of beneficial primary reactions (pyrolytic & hydrolytic degradation) and non-beneficial secondary reactions i.e. recombination and secondary cracking. In scEtOH, biomass was decomposed by pyrolysis and alcoholysis at relatively high reaction temperatures while the recombination of reaction intermediates are retarded by the unique reactions of scEtOH such as hydrogen donation and hydroxylalkylation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 68, 15 April 2014, Pages 420-427
Journal: Energy - Volume 68, 15 April 2014, Pages 420-427
نویسندگان
Steffen Brand, Flabianus Hardi, Jaehoon Kim, Dong Jin Suh,