Optimal Thermal Regeneration of Cyclic Fixed-Bed Adsorption Systems

以最小化能源成本为目标，对热摇摆吸附系统的循环操作进行了研究。测量了正己烷和正辛烷模型体系的吸附平衡，并在计算机控制的实验室规模循环吸附装置上获得了过程数据。根据流动方向、流速、气体复合材料、吸附剂的初始负荷、柱压和进料温度的变化确定最佳再生条件。将吸附平衡数据进行了关联，并用于预测循环吸附实验结果。用于预测的数学模型考虑了床层的传热传质阻力和热损失。

The cyclic operation of a thermal swing adsorption system is being investigated with the goal of minimizing energy costs. The adsorption equilibrium for a model system of n-hexane and normal octane is measured, and process data on a computer-controlled laboratory scale cyclic adsorption apparatus are obtained. Optimal regeneration conditions are determined for variations of flow directions, flow rates, gas composites, initial loading of the adsorbates, column pressures, and feed temperatures. The adsorption equilibrium data are correlated and used to predict the results for cyclic adsorption experiments. The mathematical model used for the prediction accounts for heat and mass transfer resistances and heat losses from the bed.