Process for producing high concentration oxygen by a pressure-swing-adsorption method

摘要

In production of high concentration oxygen by a pressure-swing-adsorption method using air as a raw material, air is introduced into a first step adsorption apparatus packed with a zeolite molecular sieve and is subjected to a pressure-swing-adsorption operation to obtain a non-adsorbed gas comprising oxygen as the major component, argon and nitrogen; the non-adsorbed gas is introduced into a second step adsorption apparatus packed with a carbon molecular sieve and is subjected to a pressure-swing-adsorption operation to separate argon and nitrogen from oxygen as a non-adsorbed gas; and the desorbed oxygen is obtained as high concentration oxygen.