کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5476579 | 1521418 | 2017 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficient heat allocation in the two-step ethanol steam reforming and solid oxide fuel cell integrated process
ترجمه فارسی عنوان
تخصیص گرما کارآمد در دو مرحله اصلاح بخار اتانول و فرایند یکپارچه سلول سوختی اکسید جامد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
To avoid a carbon formation in the ethanol steam reforming process from the polymerization of ethylene, a two-step reforming of ethanol via a dehydrogenation reaction and a steam reforming reaction for hydrogen production is proposed in this work. The study of using a CaO sorbent for CO2 capture to enhance the hydrogen production for solid oxide fuel cells is also carried out. Modeling of the two-step ethanol steam reforming and solid oxide fuel cell integrated process based on a thermodynamic approach is performed using a flowsheet simulator. The results show that the presence of CaO in the two-step ethanol steam reforming process has several advantages, such as having higher hydrogen yield, gaining additional heat, and providing a higher power output at a relative low reforming temperature. However, the exergy analysis indicates that this process has a higher total exergy destruction compared to the process without CaO because of the high amount of heat needed in the regenerator. Therefore, a heat allocation technique based on the first and second laws of thermodynamics is used to identify the optimal operating condition. The results show that when the reformer is operated at a temperature of 800Â K and a steam-to-ethanol ratio of one, the minimum total exergy destruction to power ratio can be achieved and heat is also sufficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 133, 15 August 2017, Pages 545-556
Journal: Energy - Volume 133, 15 August 2017, Pages 545-556
نویسندگان
Phanicha Tippawan, Karittha Im-orb, Amornchai Arpornwichanop,