本論文主要為建立一套重組器產氫系統,針對甲醇蒸氣重組反應(SRM)與甲醇氧化性蒸氣重組反應(OSRM)兩者進行比較。由SRM實驗結果可得較好的穩定性及較多之產氫量,因而選擇SRM作為研究中重組器產氫系統的反應。 在重組器活性測試機台上,實驗選用商購觸媒,在觸媒量:0.5 g、水醇進料流速:4.715 ml/h、甲醇重量空間流速(WHSV)=5及水醇比:1.1時,且重組反應於255oC時,甲醇的轉化率可達95%;其出口產物包含:氫氣:70.7%、一氧化碳3%、二氧化碳22.5%、甲醇0.9%以及水2.9%。 最後由自組重組器產氫系統實驗可知,當重組反應溫度於攝氏260度時,甲醇擁有95%以上的轉化效率。透過系統末端流量計偵測,反應器出口端的氣體量介於0.75 ~ 0.94 L/min之間。
This paper mainly studies to build up a reformer system to produce hydrogen gas for a fuel cell system. The comparison of Steam Reforming of Methanol (SRM) and Oxidative Steam Reforming of Methanol (OSMR) are studied. The experiment results show that SRM has better stability and higher production rate of hydrogen gas, so the research will be focused on SRM system. On reformer activity test system, the commercial catalyst is used in the experiments. Under the conditions of 0.5g catalyst, 4.715 ml/h feed rate of the mixture of S/C, 5 WHSV and the S/C ratio of 1.1, the reformer can reach at the conversion rate of 95% when the temperature is at 255oC. The resultant of the reaction includes: 70.7% of H2, 3% of CO, 22.5% of CO2, 0.9% of CH3OH and 2.9% of H2O. On our self-made reformer system, when the temperature reaches 260oC, the conversion rate of the reformer system is around 95%. According to the flow meter at the outlet gate, the flow meter is between 0.75 to 0.94 L/min.