Abstract

A model of steam propane reforming in a catalytic reactor was developed. The main reactor elements were two cylindrical chambers separated by a thin partition (highly hydrogen-selective palladium foil or impermeable steel plate). The upper chamber was evacuated, and the lower chamber was filled with a nickel catalyst and was maintained under constant pressure. The feed (C₃H₈ and H₂O) was uniformly introduced through the perimeter of the lower chamber; in this case, the problem reduced to the determination of the average fluxes of C₃H₈, CH₄, H₂O, CO, CO₂, and H₂ via the solution of six first-order, nonlinear, ordinary differential equations. The study was carried out in a temperature range of 673 K < T < 823 K at a steam : propane inlet flux ratio of 5 and a feed flow rate of 1800–3600 1/h. A comparison between the calculated and experimental data confirmed the assumption that there are two steam reforming ranges (a short initial range and the main range). It was proven that the optimal conditions of steam propane reforming are a feed flow rate of ∼2000 1/h and a temperature of ∼800 K.

中文翻译：

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高温催化膜反应器中蒸汽丙烷重整的建模

摘要

开发了催化反应器中蒸汽丙烷重整的模型。主要的反应器元件是两个由薄隔板（高氢选择性钯箔或不渗透钢板）隔开的圆柱形腔室。上室被抽真空，下室充满镍催化剂并保持在恒定压力下。进料（C ₃ H ₈和 H ₂ O）通过下室的周边均匀引入；在这种情况下，问题归结为确定 C ₃ H ₈、CH ₄、H ₂ O、CO、CO ₂和 H _{2的平均通量}通过六个一阶非线性常微分方程的解。该研究在 673 K < T < 823 K 的温度范围内进行，蒸汽：丙烷入口通量比为 5，进料流速为 1800–3600 1/h。计算数据和实验数据之间的比较证实了存在两个蒸汽重整范围（短初始范围和主要范围）的假设。证明蒸汽丙烷重整的最佳条件是进料流速为～2000 1/h，温度为～800 K。