کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
235729 465645 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development and evaluation of calcium oxide absorbent immobilized on fibrous ceramic fabrics for high temperature carbon dioxide capture
ترجمه فارسی عنوان
توسعه و ارزیابی جذب اکسید کلسیم بر روی پارچه های سرامیکی فیبر برای جذب دی اکسید کربن با درجه حرارت بالا
کلمات کلیدی
دی اکسید کربن، گرفتن، اکسید کلسیم، جاذب جامد، پارچه سرامیکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• An immobilization technique of the CaO on ceramic-based fibers was developed.
• The cyclic CO2 absorption of the samples is superior to pure CaO powder.
• The reactivity of the sample using yttria is maintained through the 12 cycles.
• The yttria is a superior substrate compared to the alumina for the CaO absorbent.

Calcium oxide is an effective carbon dioxide absorbent, but the cyclic lifetime and durability of the absorbent are key issues for its practicability. When used as pellets, pore plugging and sintering of particles have been found to be the major causes of the degradation of the absorption capacity in cyclic operation. In order to minimize these adverse effects, a simple and effective immobilization technique of the calcium oxide on fibrous ceramic-based fabrics (alumina and yttria) was developed. The prepared samples were characterized and evaluated by various analytical and experimental tools comprehensively. For a sample with 23 wt.% calcium oxide on the alumina fabric, continuous cyclic carbonation conversions of about 75% were achieved over 13 carbonation–calcination cycles under mild calcination condition at 750 °C and no CO2 in N2. Under more severe calcination condition at 850 °C and 20 wt.% CO2 in N2, the yttria fabric proved superior to alumina as a substrate of calcium oxide for carbon dioxide capture and the reactivity of the calcium oxide absorbent using the yttria fabric was maintained at the same level for 12 cycles.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 274, April 2015, Pages 313–318
نویسندگان
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