本研究以數值模擬探討膜反應器中的水煤氣轉化反應之氫氣生產性能分析。主要以反應器之鈀膜擺放位置作為主要參數來探討，對於反應器氫氣滲透量之影響。反應操作壓力、溫度以及進料水氣/一氧化碳莫耳比例分別為15大氣壓、450℃以及 1，在數值模擬研究的基礎上，其進料為模擬煤碳氣化的合成氣，其組成成分中含有水氣、一氧化碳、氫氣、二氧化碳以及氮氣。利用可變密度納維－斯托克斯方程式、史蒂芬-馬克斯威爾方程式以及廣義熱傳方程式來進行數值模擬求解，在本研究中，主要對軸對稱之二維模型來做深入探討。
由數值模擬結果發現，當把催化劑段(8cm)固定在反應器入口處，反應器長度固定為20cm，並將鈀膜放置位置往反應器出口方向移動，其可提升約11% 之氫氣回收率。當水氣轉移反應溫度提升，氫氣回收率增高，而一氧化碳轉化率降低，鈀膜位移效應的影響增加。提高進料水氣/一氧化碳比例，一氧化碳轉化率提高，而氫氣回收率下降。增加鈀膜厚度，氫氣回收率及一氧化碳轉化率皆降低。反應端進料流速降低，氫氣回收率及一氧化碳轉化率皆增高，但鈀膜位移效應的影響減少。

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