کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7717592 1497476 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling and optimal design of cyclic processes for hydrogen purification using hydride-forming metals
ترجمه فارسی عنوان
مدلسازی و طراحی بهینه فرایندهای چرخه ای برای تصفیه هیدروژن با استفاده از فلزات هیدرولیز تشکیل
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Hydrogen at high purity degrees can be obtained by using the well-known Pressure Swing Adsorption (PSA) process. In this paper, a Pressure Swing Absorption (PSAb) alternative operating batch wise is analyzed. An optimal design of cyclic processes for hydrogen purification using hydride-forming metals as absorption material is addressed. The selected case study is a thermo-chemical treatment process that consumes high purity hydrogen to reduce oxides and generates a waste stream that contains residual H2. PSAb process is fed with this hydrogen-poor stream; and high purity hydrogen recovery levels are obtained. A mathematical model based on an energy integrated scheme is presented to develop the optimal process design and to obtain optimal operating conditions. Various optimized solutions are compared by modifying key parameters or restriction equations. Thus, an interesting trade-off between H2 recovery and system size is analyzed. Large systems operate at large cycle times, obtaining up to 98% of H2 recovery in the order of hours, whereas small systems can recover up to 60% of H2 in short cycles of a few seconds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 18997-19008
نویسندگان
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