Analyses of the Start-up and Steady Reactions of Methanol Reforming Employing an Air-blast Atomizer
碩士 === 國立成功大學 === 航空太空工程學系專班 === 98 === The start-up process, methanol conversion and hydrogen production of the auto-thermal reformer (ATR) have been investigated by numerical simulation in the present study. The employed catalyst is Pt/CeO2-ZrO2. For the start-up process of the investigated ATR, t...
| Main Authors: | , |
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2010
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| Online Access: | http://ndltd.ncl.edu.tw/handle/30514842681952147908 |
| Summary: | 碩士 === 國立成功大學 === 航空太空工程學系專班 === 98 === The start-up process, methanol conversion and hydrogen production of the auto-thermal reformer (ATR) have been investigated by numerical simulation in the present study. The employed catalyst is Pt/CeO2-ZrO2. For the start-up process of the investigated ATR, the sparking plug is employed to ignite methanol, providing thermal energy and heating up the catalyst. As the catalyst meets the self-sustained condition, the sparking plug is shut down and the reforming reaction proceeds to the stable condition. The simulation results show that the start-up process of ATR takes less than 2 minutes when the methanol atomizer is employed. Under steady operation, increasing the air-inlet temperature has no effect on the conversion rate while it slightly reduces the hydrogen production. The results of simulation indicate that employing the atomizer leads to shorter start-up time than that of the case by gaseous feeding. The feasibility of heating the catalyst by spark ignition has been observed. The technique of spark ignition has significant benefit on the reduction of energy loss for the start-up process of the methanol reformer.
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