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URN etd-0827108-190919 Statistics This thesis had been viewed 2986 times. Download 1299 times. Author Sin-Li Sie Author's Email Address No Public. Department Chemical Engineering Year 2007 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 112 Title Study on Aluminum Plates Coated with Zirconia-sol and Catalyst Mixture for Methanol Steam-reforming Keyword Heat transfer Reaction kinetics Commercial catalyst CuO/ZnO/Al2O3 Rectangular reactor Methanol steam reforming Methanol steam reforming Rectangular reactor Commercial catalyst CuO/ZnO/Al2O3 Reaction kinetics Heat transfer Abstract Steam reforming of methanol reaction is a high endothermic reaction.
It’s very important to overcome practical heat-transfer limitations, and reduce heat losses. To improve the heat transfer characteristics in a reactor with a desired catalyst loading, a rectangular reactor equipped with aluminum plates is designed for methanol steam-reforming and its performance is investigated. The aluminum plates are coated with zirconia-sol and catalyst mixture. The reforming reactions were carried out in a rectangular reactor packed with the different weight of commercial MDC-3 catalysts to study the effects of different weight on the conversion of methanol and the selectivity of CO over CO2¬ at the same operating conditions(the ratio of water over methanol(S/C) is 1.5, the operating temperature equals to 250℃ ). The reactor performance was evaluated with different plate catalyst loadings and compared with compared with that predicted by the trademark kinetic model proposed by Pepply et al. (1999). The experimental results show that heat conduction of the rectangular reactor is effectual, heat transmits and has not hindered, make the internal and external difference in temperature not big, the heat energy that consumes is smaller than the packed-bed reactor. When increase the weight of MDC-3 catalyst, the conversion of methanol, the selectivity of CO over CO2, the yield of hydrogen are fit to simulation point gradually. Because that heat energy transmits to the catalyst directly, the selectivity of CO over CO2 is lower than that using the particle catalyst of MDC-3 simply.
Advisor Committee Jyh-Shyong Chang - advisor
none - co-chair
none - co-chair
Files Date of Defense 2008-07-28 Date of Submission 2008-08-28