Sieve regeneration process

Claim 1

A PROCESS FOR REGENERATING AN AMMONIA-CONTAING MOLECULAR SIEVE THE SAID SIEVE HAVING BEEN SUBJECTED REPEATED ADSORPTION AND DESORPTION CYCLES, SAID DESORPTION EMPOLYING AMMONIA WHICH BECOMES ADSORBED INTO SAID SIEVE AND WHEREBY A DEACTIVATING AMOUNT OF NONDESORBABLE CARBONACEOUS DEOSITS HAVE BEEN DEPOSITTED O SAID MOLECULAR SIEVE WHICH COMPRISES: (A) PASSING A HYDROCARBON FEED AT LEAST A PORTION O WHICH IS ADSORBABLE INTO SAID SIEVE OVER SAID SIEVE FOR A PERIOD OF 8 TO 48 HOURS WHEREBY SUBSTANTIALLYALL OF SAID AMMONIA IS REMOVED FROM SAID SIEVE, (B) PURGING SAID SIEVE BED WITH AN INERT GAS AT A TEMPERATURE OF 600*-900*F. IN ORDER TO REMOVED AT LEST A PORTION OF SAID ADSORBED HYDROCARBON, (C) PASSING A STREAM OF HIGH TEMPERATURE, OXYGEN-CONTAINING REGENERATION GAS AT A MAXIMUM TEMPERATURE OF 1100*F. THROUGH SAID SIEVE TO COMBUST AT LEAST A PORTION OF THE SAID CARBONACEOUS DEPOSITS THEREBY FORMING CO2 AND H2O AND REMOVING SUBSTANTIALLY ALL OF THE REMAINING PORTION OF SAID HYDROCARBON FROM THE SAID SIEVE, (D) PASSING A STREAM OF DRY AIR AT TEMPERATURE OF 800*-1100* F. FOR A PERIOD OF 3 TO 24 HOURS THROUGH SAID BED TO COMBUST THE REMAINING CARBONACEOUS DEPOSITS TO CO2 AND H2O, (E) COOLING THE SAID SIEVE BED TO A TEMPERATURE OF 500*-800*F. BY CIRCULATING DRY INERT GAS THROUGH SAID BED, (F) PASSING SUBSTANTIALLY DRY ADSORBABLEHYDROCARBON FEED THROUGH SAID SIEVE BED TO REMOVE SUBSTANTIALLY ALL OF SAID CO2 AND H2O FROM THE SAID BED, THE SAID DRY ADSORBABLE HYDROCARBON FEED BECOMING ADSORBED INTO THE SAID SIEVE.