Optimal operation of the pressure swing adsorption (PSA) process for CO2 recovery
Optimal operation of the pressure swing adsorption (PSA) process for CO2 recovery
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DOI：
10.1007/bf02706897
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发表时间：
2003-07
影响因子：
2.7
通讯作者：
W. Choi;Tae-In Kwon;Y. Yeo;Hwaung Lee;H. Song;B. Na
中科院分区：
文献类型：
--
作者：
W. Choi;Tae-In Kwon;Y. Yeo;Hwaung Lee;H. Song;B. Na
变压吸附（PSA）过程的操作是一个高度非线性和具有挑战性的问题。我们提出了一个系统的程序来实现PSA工艺的最佳操作。首先建立了变压吸附分离回收CO2的模型，并在此基础上进行了优化，确定了最佳操作条件。数值模拟和实验结果表明，所开发的模型的有效性，使用CO2和N2气体和沸石13 X。利用该模型计算了床层的穿透曲线和温度变化，并与实验结果进行了比较。通过数值模拟确定了吸附时间和回流比对产品纯度和回收率的影响。最优化问题是制定从模拟获得的非线性方程组的基础上。确定的最佳操作条件应用于实验。结果表明，在最佳操作条件下，CO2回收率较高。
The operation of PSA (Pressure Swing Adsorption) processes is a highly nonlinear and challenging problem. We propose a systematic procedure to achieve the optimal operation of a PSA process. The model of the PSA process for CO2separation and recovery is developed first and optimization is performed to identify optimal operating conditions based on the model. The effectiveness of the model developed is demonstrated by numerical simulations and experiments using CO2and N2gases and zeolite 13X. Breakthrough curves and temperature changes in the bed are computed from the model and the results are compared with those of experiments. The effects of the adsorption time and reflux ratio on the product purity and the recovery are identified through numerical simulations. The optimization problem is formulated based on nonlinear equations obtained from simulations. The optimal operating conditions identified are applied to experiments. The results show higher recovery of CO2under optimal operating conditions.