Abstract：
To purify hydrogen gas from synthesis gas using a adsorption process, SAPO 34 adsorbent was used. Due to the strong adsorption of carbon dioxide in this adsorbent, it is not possible to recover the adsorbent by reducing the pressure alone, and it is necessary to use thermal operations for recovery. For this purpose, a temperature swing adsorption (TSA) process is used to increase the purity of hydrogen for use in fuel cells. To investigate the optimum operational conditions, various temperatures and different pressures of input gas were investigated to compare the purity and recovery of adsorption process. The TSA process was simulated for pressures of 11, 22 and 33 bars and the recovery percentage of each process was calculated. According to the results obtained, the recovery value at 33 bars is better than the other two pressures, but due to the fact that operational and initial costs increase at high pressures; 22 bar pressure was chosen to present the remaining results. In this work, the total amount of material and the molar rate are also reported. The average purity of the components in the product and waste outlet streams has also been presented. Accordingly, the average molar fraction of hydrogen in the product outlet stream is 99.96% in the temperature increase stage, 99.94% and in the stream used for temperature reduction is 99.96%.
摘要：
为了使用吸附工艺从合成气中纯化氢气，使用SAPO34吸附剂。由于这种吸附剂对二氧化碳的强烈吸附，不可能仅通过降低压力来回收吸附剂，并且有必要使用热操作进行回收。为此,变温吸附(TSA)工艺用于提高用于燃料电池的氢的纯度。为了研究最佳运行条件，研究了不同温度和不同压力的输入气体，以比较吸附过程的纯度和回收率。在11、22和33巴的压力下模拟TSA过程，并计算每个过程的回收率。根据获得的结果，在33巴的恢复值优于其他两个压力，但是由于操作和初始成本在高压下增加的事实;选择22巴压力来呈现剩余的结果。在这项工作中,还报告了材料的总量和摩尔比。还给出了产物和废物出口流中组分的平均纯度。因此，在温度升高阶段，产品出口流中氢气的平均摩尔分数为99.96％，99.94%,并且在用于温度降低的流中也是99.96%。
