碩士 / 國立中央大學 / 化學工程與材料工程研究所 / 97 / This thesis studied two pressure swing adsorption (PSA) system including medical oxygen generation from air and production of anhydrous alcohol from bio-ethanol. Part I of the study was a two-bed six-step process of 2L oxygen concentrator with feed conditions provided by Merits Company to simulate oxygen product purity and average product flow rate. Simulation was performed for the bulk separation of N2/O2/Ar (78.3/20.762/0.938 vol. %) and the process utilized OXYSIV-5XPTM as adsorbent. The results showed that oxygen concentration achieved 92% or average product flow rate achieved 1.83L/min (STP) after varying valve value.
Part II of the study was simulation of pressure swing adsorption in anhydrous alcohol (99.5wt%) production process from a flow of ethanol feed vapor (92wt%). This work developed three kinds of PSA process, i.e. the two-bed four-step process (Skarstrom Vacuum), the two-bed six-step process (including purge step), and the two-bed eight-step process (including backfill step). The simulation showed that two-bed eight-step process achieved 99.5wt% ethanol and a 96.2% recovery. Therefore, the study discussed with performance difference of two-bed eight-step PSA process between general non-isotherm system and adiabatic system. Finally, the optimal operating condition was obtained by varying the operating variables, such as feed pressure, adsorber length, vacuum pressure and step time.
| Identifer | oai:union.ndltd.org:TW/097NCU05063006 |
| Date | January 2009 |
| Creators | Yin-Hsin Chen, 陳穎信 |
| Contributors | Cheng-tung Chou, 周正堂 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 140 |
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