OPTIMUM ADSORBENTS FOR H2 RECOVERY BY PRESSURE AND VACUUM SWING ADSORPTION

摘要

An improved adsorption process is provided for purifying hydrogen from a feedgas mixture including hydrogen and at least one impurity selected from thegroupconsisting of carbon monoxide and nitrogen. The process includes providing anadsorption apparatus having a discharge end adsorption layer containing anadsorbentwith a Henry's law constant (K H) at 70°F for the impurity from about0.5 to about 2.4mmole/g/atm. The product gas collected from the adsorption apparatus is highpurity(99.99+%) hydrogen.