抄録
Solvent recovery by pressure swing adsorption (PSA) with resin adsorbent (EX20P) or high silica zeolite (PQ-USY) was tried and was related with characteristics of each adsorbent, i.e., the adsorption isotherms and the rates of adsorption and desorption. CH2Cl2 vapor was chosen as adsorbate. The performance by each adsorbent, shown in terms of the yield against purity of the product gas, was discussed. The high PQ-USY gave better performance than EX20P in a small-scale experiment, as expected from their isotherms. Computer calculations were carried out to simulate the experimental results using the Stop-Go method to show the calculated results coincide well with experimental results. The method is useful to predict the performance of a solvent recovery system operated by PSA. The performance of Dual Reflux PSA which is the new type of PSA method (Wakasugi et al., 2002) was also simulated by this method.
