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Effects of operating temperature on the performance of small scale rapid cycle pressure swing adsorption air separation process
Adsorption ( IF 3.3 ) Pub Date : 2020-11-06 , DOI: 10.1007/s10450-020-00266-9
Xianqiang Zhu , Yingshu Liu , Ralph T. Yang

The effects of operating temperature on the performance of small scale oxygen concentrator were experimentally investigated using a rotary valve multi-column rapid cycle pressure swing adsorption (PSA) unit which produced a continuous stream of ≥ 90% O2 from compressed air. Simple cooling fans and air cylinder were used for controlling the temperature of compressed air. The change of column midpoint gas temperature inside adsorption column was relatively small and approximately 3–5 K with a low pressure ratio of ~ 250:101 kPa during each cycle. The oxygen recovery could be improved by increasing the operating temperature and the bed size factor (BSF) could be reduced by decreasing the operating temperature. However, the adverse thermal effects on oxygen recovery and BSF became more dominant at very low and high operating temperatures. A similar trend between unit power and BSF at different operating temperature was emerged. There was an appropriate temperature range for achieving favorable performance.



中文翻译:

工作温度对小规模快速变压吸附空气分离工艺性能的影响

上的小规模氧浓缩性能的工作温度的影响使用旋转阀多列快速循环变压吸附(PSA)单元,其产生的≥90%氧气的连续流进行了实验研究2来自压缩空气。简单的冷却风扇和气缸用于控制压缩空气的温度。在每个循环中,吸附塔内塔中点气体温度的变化相对较小,约为3–5 K,低压比约为250:101 kPa。可以通过提高操作温度来提高氧气回收率,并可以通过降低操作温度来降低床尺寸因子(BSF)。然而,在极高和极低的工作温度下,对氧气回收率和BSF的不利热影响变得更加明显。在不同的工作温度下,单位功率和BSF之间也出现了类似的趋势。存在适当的温度范围以实现良好的性能。

更新日期:2020-11-06
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