Adsorption process

Claim 1

A PROCESS FOR THE SEPARATIONOF A GASEOUS MIXTURE CONTAINING AT LEAST ONE EXTRACTABLE CONSTITUENT HAVING THE SAME DEGREE OF ADROBABILITY AS ONE OTHER CONSTITUENT OF SAID GASEOUS MIXTURE WHICH COMPRISES CONTACTING SAID MIXTURE WITH A FIRST MOVING BED OF LEAN SOLID GRANULAR ADSORBENT TO ADSORB CONSTITUENT OF GREATEST ADSORBABILITY FORMING A FIRST RICH ADSORBENT LEAVING CONSTITUENTS OF INTERMEDIATE AND LEAST ADSORBABILITY SUBSTANTIALLY UNADSORBED AS A SECONDARY FEED GAS, SUBSEQUENTLY CONTACTING SAID SECONDARY FEED WITH A SECOND MOVING BED OF SOLID GRANULAR ADSORBENT TO FORM A SECOND RICH ADSORBENT CONTAINING ADSORBED CONSTITUENTS OF INTERMEDIATE ADSORBABILITY LEAVING CONSTITUENTS OF LEAST ADSORBABILITY AS A SUBSTANTIALLY UNADSROBED FIRST PRODUCT, CONTACTING SAID SECOND RICH ADORBENT WITH A REFLUX GAS CONTAINING THE CONSTITUENT OF GREATEST ADSOEBABILITY THEREBY DESORBING A GAS CONTAINING THE CONSTITUENT OF INTERMEDIATE ADSORBABILITY AS A SECOND PRODUCT GAS, SUBSEQUENTLY DESORBING SAID CONSTITUENT OF GREATEST ADSORBABILITY FROM THE COMBINED FIRST AND SECOND MOVING BEDS OF SAID ADSORBENT TO FORM SAID REFLUX AND A THIRD PRODUCT GAS AND A LEAN ADSORBENT, AND EXTRACTING WITH AN EXTRACTION SOLVENT SAID EXTRACTABLE CONSTITUENT FROM AT LEAST ONE OF SAID PRODUCT GASES.