根據實驗討論結果得知，甲醇進料率設定於10 cc/min、加熱溫度150 oC、冷起動空氣供應率40 L/min以及穩態模式切換溫度150 oC時，可於最短時間內快速起動。自冷起動開始，氫氣達穩定最大產率所需時間約只要120秒；當觸媒出口溫度約116 oC左右時，即開始產出氫氣，並約於370 oC時達氫氣最大產出濃度約36.86Vol %，氫氣產出流率約10.34 L/min。自發熱重組法穩態性能實驗結果得知，於甲醇進料率25cc/min、S/C比2.5以及O2/C比0.14時可得最大氫氣產出濃度，約 48.01 Vol %，氫氣產出流率17.78 L/min。 This study was to design a methanol reformer. The transition of partial oxidation reforming to autothermal reforming of a methanol reformer was investigated. The parameters are heating temperature, fuel supply rate, air supply rate, O2/C ratio and S/C ratio. The main aim of this project is to get the rapid hydrogen production in partial oxidation and autothermal reforming.
The methanol reformer is composed of fuel, air and water injectors, the catalyst, temperature controlling system and gas analysing system. Glow plugs were mounted at the inlet of the catalyst of the reformer to pre-heat and ignite the mixture, and the mixture temperature was well controlled. The produced gases were sampled at the exit of the catalyst.
The experiments in this thesis consist of two main parts. The first, the transient characteristics of a methanol reformer was investigated by partial oxidation reforming. The second, the characteristics of autothermal reforming for increasing hydrogen was investigated.
The results showed that the best response of cold start was at 10 cc/min methanol supply rate, 150oC heating temperature, 40L/min air supply rateand 150oC steady mode shifting temperature. Hydrogen was produced at 116oC of catalyst outlet temperature. Also, the stable H2 production was achieved at about 120 seconds since cold start. The stable consistency of 36.86Vol % H2 production and the flow rate of 10.34 L/min were achieved at the temperature of 370oC. It showed that the best result of autothermal reforming was with 25cc/min methanol supply rate, 2.5 S/C ratio and 0.14 steady mode O2/C ratio. The stable concentration of 48.01 Vol % H2 and 17.78 L/min H2 production rate were obtained.