کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
153584 456532 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of heating rate on liquefaction of cellulose by hot compressed water
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of heating rate on liquefaction of cellulose by hot compressed water
چکیده انگلیسی

The effect of heating rate on the liquefaction of a microcrystalline cellulose particle was investigated by using a batch type reactor with a temperature controller. Experiments were carried out over the temperature range of 443–553 K. The temperature profile of the heating was controlled to obtain a proportional relationship with time. Heating rates ranged from 0.0167 to 0.167 K/s. The resulting concentration profiles of cellulose, oligosaccharides, monosaccharides and pyrolysis products were analyzed using a theoretical model which considered temperature variation during the reaction. The calculated results exhibit a reasonable fit to the experimental data. The predicted cellulose concentration profiles over a wide range of heating rates indicate that liquefaction of cellulose is affected when the heating rate is below 1 K/s. It is concluded that consideration of the heating process is necessary in the modeling of liquefaction when using reactors which cannot achieve fast heating.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 137, Issue 2, 1 April 2008, Pages 328–338
نویسندگان
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