Naphtha reforming process

Claim 1

A METHOD FOR PRODUCING HIGH OCTANE NUMBER MOTOR FUELS WHICH COMPRISES FRACTIONATING THE NAPHTHA TO FORM A 200*F. END POINT LIGHT NAPHTHA FRACTION AND A 200* TO 350* OR 400*F. END POINTHEAVY NAPHTHA FRACTION, HYDROFORMING THE LIGHT NAPHTHA FRACTION IN CONTACT WITH A PLATIMUM-ALUMINA CATALYST AT TEMPERATURES OF FROM 800*-975* F. AND PRESSURES BELOW 125 P.S.I.G. AND IN THE PRESENCE OF FROM 500 TO 500 CU. FT. OF HYDROGEN-RICH GAS PER BARREL OF LIQUID FEED, TREATING THE LIGHT NAPHTHA HYDROFORMATE WITH MOLECULAR SIEVES HAVING PORES OF ABOUT 5 A. DIAMETER TO SEPERATE THE NORMAL PARAFFINS CONTAINED THEREIN, SEPARATING THE NORMAL PARAFFINS FROM THE SIEVES BY PASSING OLEFIN-CONTAINING GASES THERETHROUGH, TREATING THE SEPERATED NORMAL PARAFFINS UNDER ISOMERIZING CONDITIONS TO CONVERT NORMAL PARAFFINS TO BRANCH CHAIN ISOMERS, PASSING THE ISOMERIZATE TO THE MOLECULAR SIEVES FOR THE RECOVERY OF THE BRANCH CHAIN ISOMERS ALONG WITH THE NON-NORMAL PARAFFIN CONSTITUENTS OF THE LIGHT NAPHTHA HYDROFORMATE, SUBJECTING THE HEAVY NAPHTHA FRACTION TO CATALYTIC HYDROFORMING AT TEMPERATURES OF FROM 850*-1000*F. AND AT PRESSURES ABOVE ABOUT 200 P.S.I.G. IN THE PRESENCE OF FROM 2000 TO 8000 CU. FT. OF HYDROGEN-RICH GAS PER BARREL OF LIQUID FEED, TREATING THE HEAVY NAPHTHA HYDROFORMATE WITH MOLECULAR SIEVES HAVING PORES OF ABOUT 5 A. DIAMETER TO SEPARATE THE NORMAL PARAFFINS CONTAINED THEREIN, SEPARATING THE NORMAL PARAFFINS FROM THE MOLECULAR SIEVES BY PASSING OLEFIN-CONTAINING GASES THERETHROUGH, AROMATIZING THE NORMAL PARAFFINS SEPARATE FROM THE HEAVY NAPHTHA HYDROFORMATE AND RECYCLING THE RESULTANT AROMATIZATE TO THE MOLECULAR SIEVE TREATMENT FOR THE RECOVERY OF BRANCH CHAIN PARAFFINS IN THE AROMATICS THEREIN WITH THE NON-NORMAL PARAFFINS IN THE HEAVY NAPHTHA HYDROFORMATE, SEPARATING THE OLEFIN-CONTAINING DESORPTION GASES FROM THE MOLECULAR SIEVES, POLYMERIZING THE SEPARATED OLEFINS TO FORM ADDITIONAL GASOLINE BOILING RANGE PRODUCTS AND PASSING THE RESULTANT POLYMERIZATE, THE LIGHT NAPHTHA PRODUCTS AND HEAVY NAPHTHA PRODUCTS TO BLENDING AND STORAGE.

Claim 2

A METHOD FOR PRODUCING HIGH OCTANE NUMBER MOTOR FUELS WHICH COMPRISES FRACTIONATING THE NAPHTHA TO FORM A 200*F. END POINT LIGHT NAPHTHA FRACTION AND A 200* TO 350* OR 400*F. END POINTHEAVY NAPHTHA FRACTION, HYDROFORMING THE LIGHT NAPHTHA FRACTION IN CONTACT WITH A PLATIMUM-ALUMINA CATALYST AT TEMPERATURES OF FROM 800*-975* F. AND PRESSURES BELOW 125 P.S.I.G. AND IN THE PRESENCE OF FROM 500 TO 500 CU. FT. OF HYDROGEN-RICH GAS PER BARREL OF LIQUID FEED, TREATING THE LIGHT NAPHTHA HYDROFORMATE WITH MOLECULAR SIEVES HAVING PORES OF ABOUT 5 A. DIAMETER TO SEPERATE THE NORMAL PARAFFINS CONTAINED THEREIN, SEPARATING THE NORMAL PARAFFINS FROM THE SIEVES BY PASSING OLEFIN-CONTAINING GASES THERETHROUGH, TREATING THE SEPERATED NORMAL PARAFFINS UNDER ISOMERIZING CONDITIONS TO CONVERT NORMAL PARAFFINS TO BRANCH CHAIN ISOMERS, PASSING THE ISOMERIZATE TO THE MOLECULAR SIEVES FOR THE RECOVERY OF THE BRANCH CHAIN ISOMERS ALONG WITH THE NON-NORMAL PARAFFIN CONSTITUENTS OF THE LIGHT NAPHTHA HYDROFORMATE, SUBJECTING THE HEAVY NAPHTHA FRACTION TO CATALYTIC HYDROFORMING AT TEMPERATURES OF FROM 850*-1000*F. AND AT PRESSURES ABOVE ABOUT 200 P.S.I.G. IN THE PRESENCE OF FROM 2000 TO 8000 CU. FT. OF HYDROGEN-RICH GAS PER BARREL OF LIQUID FEED, TREATING THE HEAVY NAPHTHA HYDROFORMATE WITH MOLECULAR SIEVES HAVING PORES OF ABOUT 5 A. DIAMETER TO SEPARATE THE NORMAL PARAFFINS CONTAINED THEREIN, SEPARATING THE NORMAL PARAFFINS FROM THE MOLECULAR SIEVES BY PASSING OLEFIN-CONTAINING GASES THERETHROUGH, AROMATIZING THE NORMAL PARAFFINS SEPARATE FROM THE HEAVY NAPHTHA HYDROFORMATE AND RECYCLING THE RESULTANT AROMATIZATE TO THE MOLECULAR SIEVE TREATMENT FOR THE RECOVERY OF BRANCH CHAIN PARAFFINS IN THE AROMATICS THEREIN WITH THE NON-NORMAL PARAFFINS IN THE HEAVY NAPHTHA HYDROFORMATE, SEPARATING THE OLEFIN-CONTAINING DESORPTION GASES FROM THE MOLECULAR SIEVES, POLYMERIZING THE SEPARATED OLEFINS TO FORM ADDITIONAL GASOLINE BOILING RANGE PRODUCTS AND PASSING THE RESULTANT POLYMERIZATE, THE LIGHT NAPHTHA PRODUCTS AND HEAVY NAPHTHA PRODUCTS TO BLENDING AND STORAGE.