Cyclic gas separation process and system

Claim 1

A PROCESS FOR SEPARATING AND PURIFYING A SUPPLY STREAM OF H2 AND N2 IN A RECYCLED STREAM FROM AN AMMONIA SYNTHESIS REACTION ZONE AND A RAW GAS STREAM TO REMOVE NH3, H2O AND CARBON OXIDES AS COMPONENTS MORE SOLUBLE IN WATER, WHICH COMPRISES HE STEPS: (A) REMOVING SAID COMPONENTS MORE SOLUBLE IN WATER FROM THE SUPPLY STREAM AT AN ELEVATED PRESSURE ABOVE 50 ATMS. BY ABSORPTION INTO AN AQUEOUS ABSORBING LIQUID IN AN ABSORPTION ZONE TO MAKE SAID SUPPLY STREAM OF GAS HAVE A LOWERED AMOUNT OF THE COMPONENTS MORE SOLUBLE IN WATER; (B) PASSING SAID SUPPLY STREAM OF GAS LOWERED IN AMOUNT OF THE COMPONENTS MORE SOLUBLE IN WATER FROM THE ABSORPTION ZONE INTO CONTACT WITH SOLID ADSORBENT WHICH REMOVES ALL BUT A SMALL TRACE AMOUNT OF ADSORBABLE COMPONENTS MORE SOLUBLE IN WATER AS WELL AS WATER ITSELF, WHILE SAID SUPPLY STREAM OF GAS PASSES THROUGH AN ADSORPTION ZONE CONTAINING SAID ADSORBENT AT SAID ELEVATED PRESSURE; (C) HEATING A PORTION OF THE SUPPLY STREAM OF GAS FREED OF WATER IN THE ADSORPTION ZONE AND PASSING THE RESULTING HOT DRIED GAS AS HOT PURGE GAS INTO A REGENERATION ZONE FOR CONTACT AT SAID ELEVATED PRESSURE WITH SOLID ADSORBENT THAT HAS ADSORBED THE COMPONENTS MORE SOLUBLE IN WATER AS WELL AS WATER ITSELF TO DESORB SAID COMPONENTS AS THE ADSORBENTS IS HEATED; (D) PASSING THROUGH SAID REGENERATION ZONE A PORTION OF THE SUPPLY STREAM OF GAS FREED OF ADSORBABLE COMPONENTS IN THE ADSORPTION ZONE AS A COLD DRY PURGE GAS FURTHER TO REMOVE ADSORBED COMPONENTS FROM AND COOL THE ADSORBENT BEING REGENERATED AT SAID ELEVATED PRESSURE; (E) PASSING PURGE GAS MIXED WITH DESORBED COMPONENTS FROM THE REGENERATION ZONE TO THE ABSORPTION ZONE; (F) PASSING A MAIN PORTION OF THE SUPPLY STREAM OF GAS PURIFIED IN THE ABSORPTION AND ADSORPTION ZONES TO THE AMMONIA SYNTHESIS REACTION ZONE; (G) ADDING RAW SYNTHESIS GAS REQUIRING PURIFICATION UNDER COMPRESSION TO SAID ELEVATED PRESSURE TO GAS PASSING FROM SAID REACTION ZONE TO THE ABSORPTION ZONE.